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Overclocking Questions II

post #1 of 14
Thread Starter 
Original thread: http://www.overclock.net/intel-cpus/573620-overclocking-questions.html

For summary and specs, continue reading this OP. Otherwise skip to Post #8.

Summary:
The difference between this thread and the previous thread is that instead of 4GB total RAM I have 8GB. Instead of DDR2-1000 I have DDR2-1066. Instead of 2 sticks of 2GB I have 4 sticks of 2GB. The reasons for this change is (1) my DDR2-1000 bottlenecked me from going past 3.6GHz, (2) my DDR2-1000 was poor at overclocking, hitting the limit at 1080MHz, and (3) I needed more RAM, 4GB wasn't cutting it.

I'm trying to hit 4GHz stable.

Picture_10.jpg
Picture_11.jpg
Picture_12.jpg
Picture_13.jpg
Picture_14.jpg
Picture_15.jpg
Picture_16.jpg

[Motherboard] GIGABYTE GA-EP45-DS3R Intel P45 Core 2 Quad/Core 2 Extreme/Core 2 Duo/Pentium/Pentium Extreme Socket 775 1600 MHz PC2-9600 (DDR2-1200) ATX w/ Latest Stable BIOS Flash
[RAM] G.SKILL 4GB (2 x 2GB) 240-Pin DDR2-1066 (PC2-8500) Dual Channel Kit x 2
[CPU] Intel Core 2 Quad Q9450 Yorkfield 2.66GHz 12MB L2 Cache LGA 775 95W Quad-Core
[CPU Cooler] Prolimatech Megahalems Rev.B
[Chassis] Cooler Master RC-690-KKN1-GP Cooler Master 690 No P/S
[PSU] Corsair Memory CMPSU-750TX 750W TX750W ATX12V
[VGA] NVIDIA Quadro FX1400 128MB PCI-E
[Thermal Compound] Arctic MX-4
[HDD1] Seagate Barracuda 7200.10 ST3500630AS 500GB 7200 RPM SATA 3.0Gb/s 3.5"
[HDD2] Western Digital Caviar Green WD10EADS 1TB 32MB Cache SATA 3.0Gb/s 3.5"
[HDD3] Western Digital Caviar Green WD20EARS 2TB 64MB Cache SATA 3.0Gb/s 3.5"

[Fan Configuration]
1x 120mm fan on bottom middle pushing air from outside below into the chassis
1x 120mm fan in front bottom pushing air from outside into the chassis
1x 120mm fans on side pushing air from outside straight into the heart of the chassis
2x 120mm fans on the top pushing air from inside the chassis to the outside
1x 120mm Delta fan zip-tied to Prolimatech Megahalems pushing air through the heatsink to the exhaust fan
2x 60mm fans mounted on both bridge chipsets pushing air straight into their heatsinks

(Coming soon: two 120mm Delta PFB1212UHE-F00 fans)
Edited by BlueToast - 9/7/11 at 5:00pm
post #2 of 14
Thread Starter 
Initial starting settings
Quote:
[MB Intelligent Tweaker(M.I.T.)]
Robust Graphics Booster Auto
CPU Clock Ratio 8 X
x Fine CPU Clock Ratio +0.0
CPU Frequency 3.20GHz( 400x8)

* Clock Chip Control *
> Standard Clock Control
CPU Host Clock Control Enabled
CPU Host Frequency(Mhz) 400 Previously 458 for 3.2GHz on DDR2-1000 RAM
PCI Express Frequency(Mhz) 100
C.I.A.2 Disabled
> Advanced Clock Control
|> Advanced Clock Control Press Enter
Code:
CPU Clock Drive [b]800mV[/b] [color=red](BIOS default is 700mV)[/color]
PCI Express Clock Drive [b]900mV[/b] [color=red](BIOS default is 700mV)[/color]
CPU Clock Skew [b]0ps[/b]
MCH Clock Skew [b]0ps[/b]

* DRAM Performance Control *
Performance Enhance Standard
Extreme Memory Profile(X.M.P.) Disabled
(G)MCH Frequency Latch 400MHz Previously 333MHz with DDR2-1000 RAM
System Memory Multiplier (SPD) 2.66D Previously 2.44B with DDR2-1000 RAM
Memory Frequency(Mhz) 1066 1066 Previously 800 1099 with DDR2-1000 RAM
DRAM Timing Selectable (SPD) Manual
> Standard Timing Control
CAS Latency Time 5 5
tRCD Previously 5 7 5
tRP Previously 5 7 5
tRAS Previously 15 20 15
> Advanced Timing Control
|> Advanced Timing Control Press Enter
Quote:
[Advanced Timing Control]
tRRD Previously 3 4 Auto
tWTR Previously 3 4 Auto
tWR Previously 6 8 Auto
tRFC Previously 52 68 56
tRTP Previously 3 4 Auto
Command Rate(CMD) 0 2

> Channel A
|> Channel A Timing Settings Press Enter
Quote:
Static tRead Value Previously 11 10 11 (Maximum value allowed is 15)
tRD Phase0 Adjustment 0 Auto
tRD Phase1 Adjustment 0 Auto
tRD Phase2 Adjustment 0 Auto
tRD Phase3 Adjustment 0 Auto

Trd2rd(Different Rank) Previously 6 8 Auto
Twr2wr(Different Rank) Previously 6 8 Auto
Twr2rd(Different Rank) Previously 5 7 Auto
Trd2wr(Same/Diff Rank) Previously 8 9 Auto

DIMM1 Clock Skew Control Auto
DIMM2 Clock Skew Control Auto
DDR Write Training Auto
|> Channel A Driving Settings Press Enter
Quote:
Driving Strength Profile 1066MHz

Data Driving Pull-Up Level Auto
Cmd Driving Pull-Up Level Auto
Ctrl Driving Pull-Up Level Auto
Clk Driving Pull-Up Level Auto

Data Driving Pull-Down Level Auto
Cmd Driving Pull-Down Level Auto
Ctrl Driving Pull-Down Level Auto
Clk Driving Pull-Down Level Auto

> Channel B
|> Channel B Timing Settings Press Enter
Quote:
Static tRead Value Previously 11 10 11
tRD Phase0 Adjustment 0 Auto
tRD Phase1 Adjustment 0 Auto
tRD Phase2 Adjustment 0 Auto
tRD Phase3 Adjustment 0 Auto

Trd2rd(Different Rank) Previously 6 8 Auto
Twr2wr(Different Rank) Previously 6 8 Auto
Twr2rd(Different Rank) Previously 5 7 Auto
Trd2wr(Same/Diff Rank) Previously 8 9 Auto

DIMM1 Clock Skew Control Auto
DIMM2 Clock Skew Control Auto
DDR Write Training Auto
|> Channel B Driving Settings Press Enter
Quote:
Driving Strength Profile 1066MHz

Data Driving Pull-Up Level Auto
Cmd Driving Pull-Up Level Auto
Ctrl Driving Pull-Up Level Auto
Clk Driving Pull-Up Level Auto

Data Driving Pull-Down Level Auto
Cmd Driving Pull-Down Level Auto
Ctrl Driving Pull-Down Level Auto
Clk Driving Pull-Down Level Auto

* Mother Board Voltage Control *
Voltage Types, Normal, Current

> CPU
CPU Vcore 1.25000V 1.36250V Previously 1.46250V to sustain 3.6GHz on DDR2-1000 RAM
CPU Termination 1.200V 1.280V
CPU PLL 1.500V 1.570V
CPU Reference 0.760V Auto
> MCH/ICH
MCH Core 1.100V 1.300V
MCH Reference 0.760V Auto
MCH/DRAM Reference 0.900V Auto
ICH I/O 1.500V Auto
> DRAM
DRAM Voltage 1.800V 2.120V
DRAM Termination 0.900V Auto
Channel A Reference 0.900V Auto
Channel B Reference 0.900V Auto



[Advanced BIOS Features]
HDD S.M.A.R.T. Capability Enabled
Limit CPUID Max. to 3 Disabled
No-Execute Memory Protect Enabled
CPU Enhanced Halt (C1E) Disabled
CPU Thermal Monitor 2(TM2) Enabled
CPU EIST Function Disabled
Virtualization Technology Disabled
Full Screen LOGO Show Disabled
Dual BIOS Recovery Source HPA
Init Display First PEG



[Integrated Peripherals]
SATA RAID/AHCI Mode Disabled
SATA Port0-3 Native Mode Disabled
USB Controller Enabled
USB 2.0 Controller Enabled
USB Keyboard Support Enabled
USB Mouse Support Disabled
Legacy USB storage detect Disabled
Azalia Codec Auto
Onboard H/W 1394 Disabled
Onboard H/W LAN1 Enabled
Onboard H/W LAN2 Enabled
Green LAN Enabled
Onboard LAN1 Boot ROM Disabled
Onboard LAN2 Boot ROM Disabled
Onboard IDE Controller Disabled
Onboard Serial Port 1 Disabled
Onboard Parallel Port Disabled



[Power Management Setup]
ACPI Suspend Type S3(STR)
Soft-Off by PWR-BTTN Delay 4 Sec.
PME Event Wake Up Disabled
Power On by Ring Disabled
Resume by Alarm Disabled
HPET Support Enabled
HPET Mode 32-bit mode
Power On By Mouse Disabled
Power On By Keyboard Disabled
AC Back Function Soft-Off



[PC Health Status]
CPU Warning Temperature 80*C/176*F
Everything else set to Disabled



Other Notes
Quote:
Q9450 Club Standards

CPU-Z
* Screenshot
* Validation

IntelBurnTest
* 20 Pass, Maximum Stress
* 50 Pass, Maximum Stress

Prime95
* 12 Hours Blend
* 6 Hours Small FFT
* 6 Hours Large FFT

Memtest86+
* 12 Hours Standard
* 24 Hours Standard

Other
* Batch Number
* Voltages & BIOS Settings
At the above settings I get an average of 43.9 GFlops for two passes in IBT using Maximum memory (approximately 7GB).

At the above settings but using 1.260V, 1.280V, and 2.100V for CPU Termination, MCH Core, and DRAM Voltage respectively I get an average of 44.7 GFlops for two passes in IBT using Maximum memory (approximately 7GB).






Quote:
Memory Frequency(Mhz) 1066 1066 Previously 800 1099 with DDR2-1000 RAM
Why did it show 800 1099 with my old RAM, and showing 1066 1066 (same ratio) now?
Quote:
tRCD Previously 5 7 5
tRP Previously 5 7 5
tRAS Previously 15 20 15
Why does BIOS suggest 5-7-7-20 instead of 5-5-5-15 (which is what my new RAM is rated for)?
Quote:
tRRD Previously 3 4 Auto
tWTR Previously 3 4 Auto
tWR Previously 6 8 Auto
tRFC Previously 52 68 56
tRTP Previously 3 4 Auto
Command Rate(CMD) 0 2
Why are these values different with my new RAM? The tRFC -- should the BIOS value match or exceed 68? I have not yet adjusted the tRFC and is still the old value that I used for my DDR2-1000 RAM.
Quote:
Trd2rd(Different Rank) Previously 6 8 Auto
Twr2wr(Different Rank) Previously 6 8 Auto
Twr2rd(Different Rank) Previously 5 7 Auto
Trd2wr(Same/Diff Rank) Previously 8 9 Auto
Why did these values change, and what do they mean? :?
Quote:
Driving Strength Profile 1066MHz
If I want to make it to 4GHz stable, I should be changing this yes? The next values up are "OC-1200" and "OC-1333".
Edited by BlueToast - 8/29/11 at 8:07pm
post #3 of 14
Thread Starter 
Quote:
Originally Posted by BlueToast;14756651 
Quote:
tRRD Previously 3 4 Auto
tWTR Previously 3 4 Auto
tWR Previously 6 8 Auto
tRFC Previously 52 68 56
tRTP Previously 3 4 Auto
Command Rate(CMD) 0 2
Why are these values different with my new RAM? The tRFC -- should the BIOS value match or exceed 68? I have not yet adjusted the tRFC and is still the old value that I used for my DDR2-1000 RAM.
According to http://www.tomshardware.com/forum/218497-30-mysterious-timings-trfc-trrd , higher tRFC values allow for better and higher overclocks.

Not sure if I should adjust the value from 56 to something else though.
Quote:
Originally Posted by BlueToast;14756651 
Quote:
Driving Strength Profile 1066MHz
If I want to make it to 4GHz stable, I should be changing this yes? The next values up are "OC-1200" and "OC-1333".
According to Post#4 at http://forums.tweaktown.com/gigabyte/30337-dram-driving-strength-profile-wottizzit.html the Driving Strength Profile is used to increase signal strength to the DRAM for better overclocks. I have a feeling I may need to set mine to OC-1200 (but not any higher).

EDIT: If I set Driving Strength to OC-1200 (both channels), set tRFC to 72 (both channels), set DRAM Voltage to 2.100V, set MCH Core to 1.280V, and set CPU Termination to 1.260V -- it will fail the POST test.

EDIT2: Ok, well I reverted back to initial configuration and attempted to run IBT. Windows froze in the middle of it. I'm also unable to boot into Memtest86. Please give me a moment to lessen some settings. (EDIT4: Actually, I was booting off the wrong device for Memtest LOL)

EDIT5 (was 3): Going to run her overnight in Memtest
Quote:
[MB Intelligent Tweaker(M.I.T.)]
Robust Graphics Booster Auto
CPU Clock Ratio 8 X
x Fine CPU Clock Ratio +0.0
CPU Frequency 3.20GHz( 400x8)

* Clock Chip Control *
> Standard Clock Control
CPU Host Clock Control Enabled
CPU Host Frequency(Mhz) 400
PCI Express Frequency(Mhz) 100
C.I.A.2 Disabled
> Advanced Clock Control
|> Advanced Clock Control Press Enter
Code:
CPU Clock Drive [b]800mV[/b] [color=red](BIOS default is 700mV)[/color]
PCI Express Clock Drive [b]900mV[/b] [color=red](BIOS default is 700mV)[/color]
CPU Clock Skew [b]0ps[/b]
MCH Clock Skew [b]0ps[/b]

* DRAM Performance Control *
Performance Enhance Standard
Extreme Memory Profile(X.M.P.) Disabled
(G)MCH Frequency Latch 400MHz
System Memory Multiplier (SPD) 2.66D
Memory Frequency(Mhz) 1066 1066
DRAM Timing Selectable (SPD) Manual
> Standard Timing Control
CAS Latency Time 5 5
tRCD 7 5
tRP 7 5
tRAS 20 15
> Advanced Timing Control
|> Advanced Timing Control Press Enter
Quote:
[Advanced Timing Control]
tRRD 4 Auto
tWTR 4 Auto
tWR 8 Auto
tRFC 68 68
tRTP 4 Auto
Command Rate(CMD) 0 2

> Channel A
|> Channel A Timing Settings Press Enter
Quote:
Static tRead Value 10 11 (Maximum value allowed is 15)
tRD Phase0 Adjustment 0 Auto
tRD Phase1 Adjustment 0 Auto
tRD Phase2 Adjustment 0 Auto
tRD Phase3 Adjustment 0 Auto

Trd2rd(Different Rank) 8 Auto
Twr2wr(Different Rank) 8 Auto
Twr2rd(Different Rank) 7 Auto
Trd2wr(Same/Diff Rank) 9 Auto

DIMM1 Clock Skew Control Auto
DIMM2 Clock Skew Control Auto
DDR Write Training Auto
|> Channel A Driving Settings Press Enter
Quote:
Driving Strength Profile 1066MHz

Data Driving Pull-Up Level Auto
Cmd Driving Pull-Up Level Auto
Ctrl Driving Pull-Up Level Auto
Clk Driving Pull-Up Level Auto

Data Driving Pull-Down Level Auto
Cmd Driving Pull-Down Level Auto
Ctrl Driving Pull-Down Level Auto
Clk Driving Pull-Down Level Auto

> Channel B
|> Channel B Timing Settings Press Enter
Quote:
Static tRead Value 10 11
tRD Phase0 Adjustment 0 Auto
tRD Phase1 Adjustment 0 Auto
tRD Phase2 Adjustment 0 Auto
tRD Phase3 Adjustment 0 Auto

Trd2rd(Different Rank) 8 Auto
Twr2wr(Different Rank) 8 Auto
Twr2rd(Different Rank) 7 Auto
Trd2wr(Same/Diff Rank) 9 Auto

DIMM1 Clock Skew Control Auto
DIMM2 Clock Skew Control Auto
DDR Write Training Auto
|> Channel B Driving Settings Press Enter
Quote:
Driving Strength Profile 1066MHz

Data Driving Pull-Up Level Auto
Cmd Driving Pull-Up Level Auto
Ctrl Driving Pull-Up Level Auto
Clk Driving Pull-Up Level Auto

Data Driving Pull-Down Level Auto
Cmd Driving Pull-Down Level Auto
Ctrl Driving Pull-Down Level Auto
Clk Driving Pull-Down Level Auto

* Mother Board Voltage Control *
Voltage Types, Normal, Current

> CPU
CPU Vcore 1.25000V 1.36250V
CPU Termination 1.200V 1.280V
CPU PLL 1.500V 1.570V
CPU Reference 0.760V Auto
> MCH/ICH
MCH Core 1.100V 1.300V
MCH Reference 0.760V Auto
MCH/DRAM Reference 0.900V Auto
ICH I/O 1.500V Auto
> DRAM
DRAM Voltage 1.800V 2.100V
DRAM Termination 0.900V Auto
Channel A Reference 0.900V Auto
Channel B Reference 0.900V Auto

EDIT: It's 7:53am and I started the tests at like 11pm-12am last night. It has completed 5 passes with 0 errors, 71% through the 6th test. I'm going to leave Memtest86+ running while I'm at school. Will be home at around 8:35pm this evening.
Edited by BlueToast - 8/30/11 at 5:54am
post #4 of 14
The 1000mhz DDR2 should have allowed you to hit 4.0Ghz. That is, if you chose the lowest speed possible. Example: 500 FSB x 8 CPU multi = 4.0Ghz. Now at 500 FSB you have the option to run the memory at 1000mhz if you choose the 2.00 memory multiplier. You should try this with your new modules too.

Now since you are running 4 modules, it's harder to reach beyond 3.6Ghz. Overclocking with just 2 modules is easier as you will need less NB (MCH) voltage. If you want to stick to 4 modules try 1.32 or 1.34v MCH (near 500 FSB). And is your Q9450 a C0 or C1? Because that will make a big difference as well. Also it will not clock as well as an E0, so maybe not 4.0Ghz.

As I rarely post on this forum lately, it might be better to drop me another PM.
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Hard DriveCoolingOSMonitor
Crucial MX300 525GB SSD, Seagate 3TB, Samsung 1TB Noctua NH-U14S Windows 10 Pro 64-bit Samsung U24E590D UHD 
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post #5 of 14
Thread Starter 
Picture from previous thread:
cpuz-cpu0-8x400.png

Is indeed a C1.

So basically, you can set the Memory Multiplier to the smallest multiplier available and then essentially just be overclocking the CPU raw (with the memory clocks way back behind -- but should still work)? How does different CPU:RAM clock ratios affect the performance of RAM and CPU? Is it that if the ratio is 1:1 then they are "equally" performing their best vs 2:1 the other is potentially that much free'er to perform than the other?

Now the MCH Core and CPU Termination -- am I supposed to be adjusting them together +/- 0.020V within each other? From the previous thread that was one thing I got some a responder (was that I should be keeping CPU Termination and MCH Core relatively close to each other).

I will experiment when I get home today. If Memtest86+ comes out fine passing all tests, but Windows freezes during IBT -- does this mean the northbridge is choking and needs more voltage (theoretically)?

Thank you Acoma_Andy!!



EDIT: It is 11:09PM and I finally have time to deal with Savanna again. She has completed 15 passes with 0 errors in Memtest86+. I believe that is more than sufficient enough. rolleyes.gif Proceeding with increasing MCH Core and CPU Termination by 0.040V.

EDIT2: Set CPU Termination to 1.320V from 1.280V. Set MCH Core to 1.340V from 1.300V. Set DRAM Voltage to 2.120V from 2.100V. Going straight to IBT... did only one pass, but I got 40.2 GFlops. :\ Disappointing for 3.2GHz.

EDIT3: If the above does not work, I will undo those three settings to their previous values. I will then set the multiplier to 2.40 from 2.66 and (note: this is probably what I will do because it doesn't make sense to try and keep my RAM on the edge with this set to 2.66. I would have more gain and benefit setting this to 2.00 or 2.40 I think ;\ )

EDIT4: Not undoing values, but changing 2.66D to 2.40B. First I set (G)MCH Frequency Latch to 333MHz, then set System Memory Multiplier (SPD) to 2.40B. Memory Frequency(Mhz) now reports 1066 960. Now to IBT! Sweet, 45.3 GFlops!

EDIT5: Increasing CPU host Frequency(Mhz) to 450 from 400 for 3.60GHz overclock. Setting CPU Vcore to 1.38750V from 1.36250V because I feel like it. Going to do 10 tests (will last roughly an hour long) in IBT. I expect it to fail; miracle if it works. biggrin.gifInstant reboot in the middle of the first IBT run. --> Increased CPU Vcore to 1.4000V from 1.38750V. Now going to run Memtest86+ over night.

EDIT6: 12:45PM *just* woke up. It has completed 9 passes with 0 errors. Going to reboot and try IBT. Instant restart during first IBT pass.

Setting (G)MCH Frequency Latch to 400MHz, setting System Memory Multiplier (SPD) to 2.00D, and setting CPU Vcore to 1.41250V from 1.40000V. Going to IBT. Instant restart during first IBT pass. Also, as logically expected, increasing CPU Vcore begins to dramatically increase CPU stress temperatures. tongue.gif


Question #1
Here is a thought though.. in CPU-Z it says that my motherboard's FSB is at 1800MHz. I know that the board is rated to 1600MHz. Could this be my bottleneck? If Memtest86+ passes fine, then how would loosening RAM help? (It wouldn't??)

Question #2
Quote:
Memory Frequency(Mhz) 1066 1066 Previously 800 1099 with DDR2-1000 RAM
Why did it show 800 1099 with my old RAM, and showing 1066 1066 (same ratio) now?

Question #3
Quote:
tRCD Previously 5 7 5
tRP Previously 5 7 5
tRAS Previously 15 20 15
Why does BIOS suggest 5-7-7-20 instead of 5-5-5-15 (which is what my new RAM is rated for)?

Question #4
Quote:
tRRD Previously 3 4 Auto
tWTR Previously 3 4 Auto
tWR Previously 6 8 Auto
tRFC Previously 52 68 56
tRTP Previously 3 4 Auto
Command Rate(CMD) 0 2
Why are these values different with my new RAM? The tRFC -- should the BIOS value match or exceed 68? I have not yet adjusted the tRFC and is still the old value that I used for my DDR2-1000 RAM.

Question #5
Quote:
Trd2rd(Different Rank) Previously 6 8 Auto
Twr2wr(Different Rank) Previously 6 8 Auto
Twr2rd(Different Rank) Previously 5 7 Auto
Trd2wr(Same/Diff Rank) Previously 8 9 Auto
Why did these values change, and what do they mean? :?

Question #6
So let us try to sacrifice RAM for CPU overclocks. Would decreasing or increasing the (G)MCH be recommended?
Edited by BlueToast - 8/31/11 at 11:33am
post #6 of 14
Quote:
Originally Posted by BlueToast;14763339 
Question #1
Here is a thought though.. in CPU-Z it says that my motherboard's FSB is at 1800MHz. I know that the board is rated to 1600MHz. Could this be my bottleneck? If Memtest86+ passes fine, then how would loosening RAM help? (It wouldn't??)

Question #2

Why did it show 800 1099 with my old RAM, and showing 1066 1066 (same ratio) now?

Question #3
Why does BIOS suggest 5-7-7-20 instead of 5-5-5-15 (which is what my new RAM is rated for)?

Question #4
Why are these values different with my new RAM? The tRFC -- should the BIOS value match or exceed 68? I have not yet adjusted the tRFC and is still the old value that I used for my DDR2-1000 RAM.

Question #5
Why did these values change, and what do they mean? :?

Question #6
So let us try to sacrifice RAM for CPU overclocks. Would decreasing or increasing the (G)MCH be recommended?

1) The board is rated for 1600 FSB so it can support the QX9770. However, the board can easily run 2200 FSB with the right settings.

2) Because the board probably used the default SPD table for 800mhz. With your new memory, it will show the 1066 SPD table. 1000mhz is not officially supported so it wasn't shown.

3) It depends on the compatibility of the memory. But as with all memory modules, you can set these settings yourself. You could check your SPD profile in Cpu-Z and compare it to the bios setting.

4) 56 tRFC is just fine for 1066mhz most of the time. If you would run the memory at a lower speed, you could go below 56 and if you would run the memory beyond 1066mhz you might need to increase it.

5) Looks like advanced memory settings to me. You better not change these values if you don't want instability. The board will raise these timings if your memory speed increases.

6) Because you are running 4 memory modules you will need a slightly higher MCH voltage. Around 450 FSB 1.28v MCH should be ok, if you head towards 500 FSB then you will need around 1.32v. A quad core CPU also requires a slightly higher MCH compared to a dual core.
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post #7 of 14
Thread Starter 
Again, I thank you *very* much for your time and help Acoma_Andy. It's people like you who deserve opportunities to great things.
Quote:
Originally Posted by Acoma_Andy;14786660 
6) Because you are running 4 memory modules you will need a slightly higher MCH voltage. Around 450 FSB 1.28v MCH should be ok, if you head towards 500 FSB then you will need around 1.32v. A quad core CPU also requires a slightly higher MCH compared to a dual core.
I need a reference point here ... what would be too much voltage on CPU Termination and MCH Core? *trying to get a grasp of levels* :? (EDIT: Answered in Post #8)

Thank you so much!

(EDIT: Additionally, I received my two 120mm Delta PFB1212UHE-F00 fans. Tried one out in open air at the office, and boy, these things are absolute beasts. Since I have an overkill CPU heatsink, I gotta figure out a way to test for the best fan configuration possible...)
Edited by BlueToast - 9/6/11 at 11:53pm
post #8 of 14
Thread Starter 
Greetings,

I have been doing some research. Just some notes to myself:
  • Do not exceed 1.45V for CPU Vcore on a 45nm Core 2; good idea not to match 1.45V for some padding smile.gif
  • This guy with a Q9450 C1 used a CPU Termination of 1.28V, CPU PLL of 1.5V, CPU Vcore of 1.32V, MCH Core of 1.28V, DRAM Voltage of 2.1V to attain a 3.8GHz overclock. He had a CPU GTL 0/2 of .635 and GTL 1/3 of .67, but I don't think my Gigabyte EP45-DS3R supports or has an option like that
  • According to this examination of the EP45-DS3R, I should ensure VTT (aka CPU Termination) does not exceed 1.4V-1.9V (the latter being a new manufacturer standard apparently)
  • Posters of the original thread to this thread suggest:
    • keeping MCH Core and CPU Termination voltages close to each other
    • quadcore will require a "tad higher" voltages than dualcores
    • DRAM Termination should be set to half of DRAM Voltage (though later in the thread it was set back to Auto)
    • DRAM Termination, Channel A Reference, Channel B Reference, and "MCH/DRAM Reference" should be the same value
    • MCH Core and CPU Termination should be ok at 1.3V, good at 1.34V with 1.38V being on the high side
    • CPU PLL should not exceed 1.6V ("according to Intel") and should be comfy at 1.56V-1.57V
    • MCH Core needs a minimum of 1.16V to be stable
    • "at a higher FSB, the memory might also need a higher Static tRead setting"
    • "You could try continue clocking with the 2.00 memory multiplier, and see what you can get out of it. But from my experience with the Gigabyte EP45 boards, the 2.4 and 2.66 memory multipliers allow for best overclocks somehow (don't ask me why)" but try and stick to 2.00B and 2.40B multipliers

Answers to a handful of questions:
Plan for when I get some time with my girl (computer):
  • Set multiplier to 2.00B
  • Set (G)MCH Frequency Latch to 333MHz (required for above)
  • Set CPU PLL at 1.56-1.57V (future adjustments unnecessary)
  • Set MCH Core and CPU Termination to 1.34V (future adjustments unnecessary)
  • (DRAM Termination = 1/2 DRAM Voltage) = "MCH/DRAM Reference" | Channel A Reference | Channel B Reference
  • Set DRAM Voltage to 2.12V (future adjustments unnecessary)
  • Set CPU Vcore at 1.4V (good starting point)
  • Set CPU Host Frequency(Mhz) to 400 (for 3.2GHz starting point)
  • Set Driving Strength Profile to 1066MHz (we can do OC-1200 later)
  • Strip out the 120mm fans in the chassis (except for bottom front) and place one [ame=http://www.youtube.com/watch?v=4m3XusgQ9No]120mm Delta PFB1212UHE-F00 (video)[/ame] at the bottom center (to push air from bottom exterior straight into the interior core)
(Where "future adjustments unnecessary" is written, it means that when a desired overclock is reached these values can then be tested for lower voltages)

[ame=http://www.youtube.com/watch?v=v81Omc8mt4U]Initial BIOS Settings (20110907-1853)[/ame]
Edited by BlueToast - 9/7/11 at 4:59pm
post #9 of 14
Thread Starter 
Alright. So I have the CPU Host Frequency set to 475 for 3.8GHz, CPU Vcore set to 1.5V (idle is 1.44V and 1.36V stress as reported by CPU-Z), 2.00B multiplier, 5-7-7-20 timings, tRFC of 72, static tRead of 10, and driving strength profile of OC-1200. RAM clock is 950MHz.

I can POST and get into Windows. However, after a couple dozen seconds after starting the IBT test she freezes and momentarily reboots.

What do I do?

EDIT: Tried 400MHz MCH Latch + 2.00D. Still the same symptom (freeze+reboot during IBT test). She was stressing at 1.392V-1.408V this time though.

EDIT2: Increased CPU Termination and MCH Core to 1.36V from 1.34V. Not going to go higher than 1.36V unless I am reassured its ok. Still the same symptom (freeze+reboot during IBT test); reducing both back to 1.34V until I hear from Acoma_Andy or someone else.

EDIT3: Trying 463x8 (3.70GHz). Stressing at 1.328V - 1.36V. Max temps of 72, 72, 72, 69 to Core#0, 1, 2, 3 respectively. Definitely working. I have a side question: I remember when it took about 3000s to complete 5 rounds in IBT. At 3.55GHz it took probably around 2400-2600s (if I remember correctly which I probably don't) and I got 50GFlops on average. At 3.7GHz here I am getting 51GHz, but it is only taking about 305s which means it'd take roughly 1600s to complete all 5. How does IBT work and why am I getting different numbers (GFlops vs Time)?

Ok, it failed on the second run after 305s. Got wrong results.

One core failing Prime95 in just 1m 5s.

EDIT4: Trying 458x8 (3.66GHz). Still failed second test in IBT.

EDIT5: Trying 450x8 (3.60GHz), CPU Vcore to 1.45V in BIOS. Failed second test in IBT. Temperatures were about 4-5*C less than when I had Vcore in BIOS set to 1.5V.

EDIT6: Trying 450x8 (3.60GHz), CPU Vcore to 1.5V in BIOS. I really need to get those two 252cfm Delta fans installed. Failed second test in IBT.

EDIT7: Trying 425x8 (3.40GHz). Reboot during Windows 7 startup, running repair.
Edited by BlueToast - 9/10/11 at 12:50am
post #10 of 14
A few things I noticed. You should not use the driving strength profile at all, unless you are actually going to try to hit 1200mhz on the memory.

When your computer freezes or locks up, run memtest and see if it passes. If it passes that means one of your other voltages is not set correctly. Usually not enough vcore.

You should lower the memory voltage to the stock voltage of 2.1v unless you pass 1066mhz.

You also need to adjust the CPU reference voltage (below CPU PLL) to stabilize your overclock. As of now I don't recall what setting I am using, but this is probably what you need to stabilize the overclock.
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Intel i7 7700k 4.8Ghz @ 1.28v Asrock Z170 Extreme4 Sapphire R9 Nano @ Fury X clocks Crucial Ballistix 16GB 2666mhz CL15 
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Money dump
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 7700k 4.8Ghz @ 1.28v Asrock Z170 Extreme4 Sapphire R9 Nano @ Fury X clocks Crucial Ballistix 16GB 2666mhz CL15 
Hard DriveCoolingOSMonitor
Crucial MX300 525GB SSD, Seagate 3TB, Samsung 1TB Noctua NH-U14S Windows 10 Pro 64-bit Samsung U24E590D UHD 
KeyboardPowerCaseMouse
Saitek Eclipse II Seasonic Prime 850w Titanium Corsair Carbide Air 540 Steelseries Xai 
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