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Setting up and voltage terms for EP45-UD3* - Page 25

post #241 of 282
Ok, so because inquiring minds wanted to know, I took the time to write down my M.I.T. for my Q9550 running 4.2GHz. The overclock is 100% stable, I've put it through the ringer to make sure of that. I still think it could use a little fine tuning (I might be able to move a few of the voltages around to make it run a bit leaner) but it's certainly doing the job now with real world temperatures never breaking 47C. My Q9550 has a VID of 1.25 volts, which to the best of my knowledge is actually kinda high. Ironically enough, my E8400 I believe has the same VID. and I can get that at 4.5GHz with little to no effort.

Without further ado:


CPU = Q9550 E0
Motherboard = UD3P Rev 1.6
BIOS Version = FB (I believe?... whatever came stock on Rev 1.6 board)
Ram = 2x2 1066mhz G.Skill F1 PC8500 2.1v 5-5-5-15

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster .............: Auto
CPU Clock Ratio .....................: 8
Fine CPU Clock Ratio.................: .5
CPU Frequency .......................: 4.20GHz (495x8.5)


Clock Chip Control
Standard Clock Control
CPU Host Clock Control...............: Enabled
CPU Host Frequency (Mhz) ............: 495
PCI Express Frequency (Mhz) .........: 100

Advanced Clock Control
CPU Clock Drive..........................: 800mV
PCI Express Clock Drive...............: 900mV
CPU Clock Skew........................: 50ps
MCH Clock Skew...........................: 100ps

DRAM Performance Control
Performance Enhance..................: Standard
Extreme Memory Profile (X.M.P.)......: Auto
(G)MCH Frequency Latch...............: 333mhz
System Memory Multiplier ............: 2.00B
Memory Frequency (Mhz) ..............: 990
DRAM Timing Selectable ..............: Manual

Standard Timing Control
CAS Latency Time.....................: 5
tRCD ................................: 5
tRP..................................: 5
tRAS.................................: 15


Advanced Timing Control
tRRD.................................: auto
tWTR.................................: auto
tWR..................................: auto
tRFC.................................: auto
tRTP.................................: auto
Command Rate (CMD) ..................: auto


Channel A
Static tRead Value...................: 10
Channel B
Static tRead Value...................: Auto


Motherboard Voltage Control
CPU
Load Line Calibration (LLC) .........: Enabled
CPU Vcore............................: 1.33125
CPU Termination.....1.200V*..........: 1.36
CPU PLL.............1.500V*..........: 1.57
CPU Referen.........0.755V*..........: .815 @ 1.2 VTT

MCH/ICH
MCH Core............1.100V...........: 1.40
MCH Reference.......0.800V...........: .760 @ 1.2 VTT
MCH/DRAM Ref........0.900V...........: auto
ICH I/O.............1.500V...........: auto
ICH Core............1.100V...........: auto

DRAM
DRAM Voltage .........1.800V.........: 2.100
DRAM Termination .....0.900V.........: auto
Channel A Reference ..0.900V.........: auto
Channel B Reference ..0.900V.........: auto

As I said, nothing too fancy. It still needs a bit of tweaking as going anything above the 495 FSB gets rather sketchy. Essentially, I need to start manipulating more of the settings off of Automatic Voltages to manual, and stress to make sure its stable that way, so when I start getting up into the higher FSBs the Autos don't send my components packing.

What do you guys think?
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post #242 of 282
Thread Starter 
Looks good Dan. It would take a lot more tweaking and get frustrating but you "could" take her a bit higher if you wanted, but Quads get really picky at this point.

I am a little surprised at the ref's, I think my cpu and mch are complete backwards of yours but I guess that is how it go's sometimes.
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post #243 of 282
Yep, thats how it goes sometimes... I want to get more out of it, and I certainly think its possible. Temps are in line, so I can throw some power at her smile.gif

Soon, first... I have a 128gb C300 SSD coming wink.gif
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post #244 of 282
reference voltages will need to change as you move FSBv... just like setting GTL ratio's on older boards..if you up FSB.. try to lower refV's.
post #245 of 282
Quote:
Originally Posted by CL3P20;13642637 
reference voltages will need to change as you move FSBv... just like setting GTL ratio's on older boards..if you up FSB.. try to lower refV's.

I don't think so..

People are mistaking GTL multipliers (on ASUS,DFI etc mobos) and CPU Reference voltage on Gigabyte..

CPU Reference voltage on Gigabyte is the actual value for GTL voltage and not GTL multiplier..

Intel states that default GTL reference voltage for 45nm CPU is 0.737V and VTT is 1.10V..

Now on Asus,DFI etc mobos in order to have that default value for actual CPU GTL reference voltage you need to use VTT=1.10V and CPU GTL = 0.67x [ 0.67x 1.1 = 0.737V)

But on Gigabyte motherboards you can directly input actual CPU GTL voltage regardless on VTT..

On Gigabyte mobos CPU Reference voltage (GTL) is not tied to VTT like it's on Asus,DFI with those GTL multipliers..

As on Gigabyte you can have VTT= 1.5V and CPU GTL reference voltage still on default value 0.737V.. (think of it as if mobo is automatically setting GTL multi to 0.49x)

The way I see it CPU Reference voltage is not GTL multiplier but actual value of GTL voltage..

In my opinion that was the key for success for Gigabyte EP45 mobos to achieve such high stable FSB on C2Q as you can tune CPU Reference voltage much more precisely (in mV) than on mobos using GTL multipliers..


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post #246 of 282
Quote:
Advanced Timing Control
tRRD.................................: auto
tWTR.................................: auto
tWR..................................: auto
tRFC.................................: auto
tRTP.................................: auto
Command Rate (CMD) ..................: auto


Channel A
Static tRead Value...................: 10
Channel B
Static tRead Value...................: Auto

Tweak these now! Here is a good read for that.

My understanding of the Refs is not what you just posted King. According to Lsdmeasap, the MCH Ref and CPU Ref are multipliers and not actual voltages. The proof is that when adjusted these directly impact the CPU Term (VTT). Or did I misread it?
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post #247 of 282
Quote:
Originally Posted by grishkathefool;13646766 
Tweak these now! Here is a good read for that.

My understanding of the Refs is not what you just posted King. According to Lsdmeasap, the MCH Ref and CPU Ref are multipliers and not actual voltages. The proof is that when adjusted these directly impact the CPU Term (VTT). Or did I misread it?

that was my understanding too..

with Gigabyte and some other brands you choose the actual reference multi.. with Asus and some others.. you choose only an offset to the original value..the multi stays the same
post #248 of 282
I've noticed that most CPU's refs tend to lower as the FSB scales higher. Doesn't really seem to matter if its an offset or multi, it generally lowers the higher you go.
    
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post #249 of 282
I have some free time later tonight and I will jot down my 2 main mit profiles and post them for you. 24/7 is only 3.6ghz but it will run that with my fans only just spinning and when I need more power I have a 4.4ghz profile that's prime stable too but it gets warm and noisey when the air temps get over '25.
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post #250 of 282
Quote:
Originally Posted by marsey99;13664993 
I have some free time later tonight and I will jot down my 2 main mit profiles and post them for you. 24/7 is only 3.6ghz but it will run that with my fans only just spinning and when I need more power I have a 4.4ghz profile that's prime stable too but it gets warm and noisey when the air temps get over '25.

I'd be curious to see your 4.4 Prime stable settings. I haven't got around to pushing this beyond 4.2 stable yet.
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Cool story, bro!
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