GA-X58A-UD7 rev.2 12Gb memory / uncore stability problem - Overclock.net

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post #1 of 7 Old 11-16-2012, 03:43 AM - Thread Starter
 
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Hi guys!
I'm new to the forums so don't beat me hard smile.gif

Got a problem, with memory i guess...
Please take a look at my rig in signature, i've listed there everything include memory timings / voltages default values specified by devs.

This is pretty hard rig i guess, but i'm kinda puzzled that i can launch fully stable only 1862 mHz memory 8 9 8 24 2T at default 133mHz BLCK without a single problem.

But when i go for let's say 138 BLCK (which is certanly ain't too overkill for this exact rig and cooler), and memory of something like 1932 mHz 8 9 8 24 2T, than i got errors in CPU OCCT test (using OCCT 4.3.2), and also i have BSOD 0x124 after 5-10 minutes of playing GTA IV on highest graphics (which says to raise QPI/VTT or CPU vcore, but i'm afraid to go further).

I got pretty nice cooler on CPU, stock fan cooler by G-Skill on memory and also have Hybrid silent pipe 2 by Gigabyte installed on North bridge.
So i don't think it's high temperature issue. On load CPU is 41-42 C, NB maximum i've seen 61 C, videocard maximum 58 C.

DRAM rated for 1.65 V, but mb got only 1.64 V and 1.68 V options, i use 1.68 V since it's only stable, and motherboard sensors shows 1.65 V in this way, so it's ok i guess?
QPI/VTT is set on 1.475V, which is enough hard already i think. But maybe i need to raise it more? How far can i push it to be safe?
When i set CPU vcore to 1.34375 V (with Load Line Calibration - Level 2), then motherboard sensors shows it's ~1.312 V. Do i need to push it further? Btw, which is last safe voltage for my CPU?
I've also heard that raising QPI PLL and IOH Core to ~1.2 V helps to improve stability, is this true? Or maybe i need to raise them more? and how hard can i go on them to be safe?

I use FD14, latest beta bios.
My current BIOS settings (Click to show)
Advanced CPU Features:
CPU Clock Ratio ................................... [24] (3.31 GHz)
Intel(R) Turbo Boost Tech ................... [disabled]
CPU Cores Enabled ............................ [All]
CPU Multi Threading .............................[enabled]
CPU Enhanced Halt (C1E) ................. [enabled]
C3/C6/C7 State Support ...................... [disabled]
CPU Thermal Monitor .......................... [disabled]
CPU EIST Function .............................. [enabled]
Virtualization Technology ..................... [enabled]
Bi-Directional PROCHOT .................... [enabled]

QPI Clock Ratio ..................................... [x36] (4.96 GHz)
Uncore Clock Ratio ...............................[x26] (3588 MHz)
Isonchronous Support .........................[enabled]
Virtualization Technology .....................[enabled]

Standard Clock Control:
Base Clock (BCLK) Control ................ [138 MHz]
PCI Express Frequency (MHz) ............ [auto]

Advanced Clock Control:
CPU Clock Drive ....................................[800mV]
PCI Express Clock Drive ..................... [900mV]
CPU Clock Skew ...................................[0ps]
IOH Clock Skew .....................................[0ps]

Advanced DRAM Features:
Extreme Memory Profile (X.M.P) ......... [disabled]
Performance Enhance ......................... [standard]
System Memory Multiplier (SPD) ........ [14] (1932 MHz)
DRAM Timing Selectable (SPD) ......... [quick]

Channel A Timing Settings:
CAS Latency Time .................................[8]
tRCD ........................................................[9]
tRP ...........................................................[8]
tRAS .........................................................[24]
CR.............................................................[2]

Advanced Voltage Control:
Load Line Calibration ......................... [level 2]
CPU Vcore .............................................[1.34375]
QPI/VTT Voltage 1.150v .......................[1.475]
CPU PLL 1.800v ...................................[normal]
PCIE 1.500v ...........................................[normal]
QPI PLL 1.100v .....................................[1.220]
IOH Core 1.100v ...................................[1.200]
ICH I/O 1.500v .......................................[normal]
ICH Core 1.1v ........................................[normal]

DRAM
DRAM Voltage 1.500v .......................... [1.680]
DRAM Termination 0.750v................... [auto]
Ch-A Data VRef. 0.750v .......................[auto]
Ch-B Data VRef. 0.750v .......................[auto]
Ch-C Data VRef. 0.750v .......................[auto]
Ch-A Address VRef. 0.750v .................[auto]
Ch-B Address VRef. 0.750v .................[auto]
Ch-C Address VRef. 0.750v .................[auto]

P.S. I'm also a having a bit of worry about 3.3V
BIOS sensors, ET6 and HWMonitor by CPU ID all shows such info:
+12 V = 12.112 V
+5 V = 4.99 V
+3.3 V = 3.168 V (is such a difference ok, or it can be consider as huge drop and i need to raise something in bios to let it feed normally?)

And also, what exactly 3.3 V feeds?

Thx in advance for any help guys, i really need it!

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post #2 of 7 Old 11-16-2012, 03:59 AM
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You are using all six DIMMs?

You will almost certainly need to manually adjust the tRFC timing to get full stability. Find out what it's being set to now and add 20-30 to that number. tRAS, tRC, and tFAW may also need to be loosened slightly.
Quote:
Originally Posted by failure13 View Post

QPI/VTT is set on 1.475V, which is enough hard already i think. But maybe i need to raise it more? How far can i push it to be safe?

This is already way too high for long term use on an air/close loop cooled Gulftown.

If you reduce the uncore clock, as I mention below, you should not need more than 1.25-1.3v at the most.
Quote:
Originally Posted by failure13 View Post

I've also heard that raising QPI PLL and IOH Core to ~1.2 V helps to improve stability, is this true?

Not at the BCLKs you are looking for, no.

Leave them at 1.1v
Quote:
Originally Posted by failure13 View Post

Uncore Clock Ratio ...............................[x26] (3588 MHz)

This is too high.

Most i7 970s do not like uncore being pushed too far, and unlike Bloomfield chips, you don't need double the DDR rating of the memory, only 1.5x or so.

I would drop this down to 21x or 22x for your current DRAM multiplier.
Quote:
Originally Posted by failure13 View Post

+3.3 V = 3.168 V (is such a difference ok, or it can be consider as huge drop and i need to raise something in bios to let it feed normally?)

I would double check your power connections and test the rails with a multimeter.

~3.17v, if accurate, is too low.
Quote:
Originally Posted by failure13 View Post

And also, what exactly 3.3 V feeds?

Parts of the chipset, probably some integrated I/O stuff, and possibly the memory.

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post #3 of 7 Old 11-16-2012, 04:57 AM - Thread Starter
 
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Hi, thanks for your reply! smile.gif
Quote:
You are using all six DIMMs?
Yes, i use 6 DIMMs 2Gb each.
Quote:
You will almost certainly need to manually adjust the tRFC timing to get full stability. Find out what it's being set to now and add 20-30 to that number. tRAS, tRC, and tFAW may also need to be loosened slightly.
Please tell me how can i find current tRFC? Now it's set on auto, and there are no info about that in CPU-Z. But loose rest of the timings - is last thing i would like to do, coz this would decrease perfomance dramatically, besides it works stable on 1862mHz which is not insane difference i think.
Quote:
This is already way too high for long term use on an air/close loop cooled Gulftown.
If you reduce the uncore clock, as I mention below, you should not need more than 1.25-1.3v at the most.
1.355 is minimum that i can get this memory to work on 1900mHz+ stable to detect all the DIMMS. So it's clearly that with more uncore i will need also more QPI/VTT to get stable?
Quote:
Quote:
I've also heard that raising QPI PLL and IOH Core to ~1.2 V helps to improve stability, is this true?
Not at the BCLKs you are looking for, no.
Sometimes when i used 143 BCLK x26 uncore and memory was at 2004MHz, it was must to at least load Windows with errors, so i think it should improve stability just a little bit somehow, well to test i reduced them both for default 1.1V as you said.
Quote:
Most i7 970s do not like uncore being pushed too far, and unlike Bloomfield chips, you don't need double the DDR rating of the memory, only 1.5x or so.
Truth you said, but at the same time, i've found that difference between x22 and x26 is so huge, that i would like to use at least x24. For the test purpose i've lowered it to x21 now.
Quote:
I would double check your power connections and test the rails with a multimeter.
~3.17v, if accurate, is too low.
Can you please say or show how 3,3 V connector look physically? i'm not familiar with each power connector, so i don't know what to search for.
I've tried it like this, but without tRFC (Click to show)
Advanced CPU Features:
CPU Clock Ratio ................................... [24] (3.31 GHz)
Intel(R) Turbo Boost Tech ................... [disabled]
CPU Cores Enabled ............................ [All]
CPU Multi Threading .............................[enabled]
CPU Enhanced Halt (C1E) ................. [enabled]
C3/C6/C7 State Support ...................... [disabled]
CPU Thermal Monitor .......................... [disabled]
CPU EIST Function .............................. [enabled]
Virtualization Technology ..................... [enabled]
Bi-Directional PROCHOT .................... [enabled]

QPI Clock Ratio ..................................... [x36] (4.96 GHz)
Uncore Clock Ratio ...............................[x21] (3036 MHz)
Isonchronous Support .........................[enabled]
Virtualization Technology .....................[enabled]

Standard Clock Control:
Base Clock (BCLK) Control ................ [138 MHz]
PCI Express Frequency (MHz) ............ [auto]

Advanced Clock Control:
CPU Clock Drive ....................................[800mV]
PCI Express Clock Drive ..................... [900mV]
CPU Clock Skew ...................................[0ps]
IOH Clock Skew .....................................[0ps]

Advanced DRAM Features:
Extreme Memory Profile (X.M.P) ......... [disabled]
Performance Enhance ......................... [standard]
System Memory Multiplier (SPD) ........ [14] (1932 MHz)
DRAM Timing Selectable (SPD) ......... [quick]

Channel A Timing Settings:
CAS Latency Time .................................[8]
tRCD ........................................................[9]
tRP ...........................................................[8]
tRAS .........................................................[24]
CR.............................................................[2]

Advanced Voltage Control:
Load Line Calibration ......................... [level 2]
CPU Vcore .............................................[1.35625]
QPI/VTT Voltage 1.150v .......................[1.455]
CPU PLL 1.800v ...................................[normal]
PCIE 1.500v ...........................................[normal]
QPI PLL 1.100v .....................................[1.220]
IOH Core 1.100v ...................................[1.200]
ICH I/O 1.500v .......................................[normal]
ICH Core 1.1v ........................................[normal]

DRAM
DRAM Voltage 1.500v .......................... [1.680]
DRAM Termination 0.750v................... [auto]
Ch-A Data VRef. 0.750v .......................[auto]
Ch-B Data VRef. 0.750v .......................[auto]
Ch-C Data VRef. 0.750v .......................[auto]
Ch-A Address VRef. 0.750v .................[auto]
Ch-B Address VRef. 0.750v .................[auto]
Ch-C Address VRef. 0.750v .................[auto]
Even with low Uncore x21 - after 5 minutes of OCCT with low data rate i got error on core #1, with high data rate i got no errors in 5 minutes though, will check GTA later.

So it's not really stable it seems even like this, and it should be stable, coz settings are not insane, what else can i try?

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post #4 of 7 Old 11-17-2012, 01:59 AM - Thread Starter
 
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Yeah, GTA cause x124...maybe i need more vcore than 1.35625 V with such memory and uncore?

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post #5 of 7 Old 11-18-2012, 03:51 AM - Thread Starter
 
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Ok guys, i've managed to pass OCCT with low data rate for 10 hours without errors or bsod, so this can be considered as stable i believe...
But GTA IV still produce x124 BSOD.
Maybe something like videocard vdrop have happened due such a stress on northbridge?
Any adivce of how to fix this situation?

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post #6 of 7 Old 11-18-2012, 11:17 AM
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Really, loosen tRFC.

More vcore may also be needed, but 124 errors strongly imply memory or uncore, especially if OCCT doesn't have problems.

3.3v is the orange wire on the motherboard or SATA connector.

...rightful liberty is unobstructed action according to our will within limits drawn around us by the equal rights of others. I do not add 'within the limits of the law,' because law is often but the tyrant's will, and always so when it violates the right of an individual. -- Thomas Jefferson
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post #7 of 7 Old 11-19-2012, 02:48 PM - Thread Starter
 
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Ok, i've found that my default tRFC for 2133mHz is 110, so i've tried to up it on 10, until 140, this haven't helped at all with those BSOD, but lost the speed, so i turned it back frown.gif

How much more vcore you suggest?
I was trying already almost every value until 1.4V, nothing seem to be chaged, except CPU heat...

Yet only one improvment i could find - is disabling CPU Multi Threading, which have lowered temps of cores like on 8 degrees, and also now i don't got errors on OCCT at all, with such memory frequencies...

Kinda lost in here frown.gif
There must be something to improve stability...

I was able to run OCCT fully stable with low data rate on 10 hours, with:
BLCK 134mHz (only 1mHz more than stock lol),
CPU multiplier x24,
memory x14 (1876mHz),
uncore x26 (3484mHz, that gives an incredible perfomance comapred to everything that from x21 - x25!)
CPU vcore: 1.35625 V,
QPI/VTT 1.475 V,
QPI PLL 1.180 (i found this voltage really increase stability in GTA IV case at least)

So, this is most stable i could run GTA for at least hour, but then i also got 0x124.

My guess, is GTA IV on highest graphical settings is much more hardcore system stress than anything else, because it use simultaniosly very high CPU load, very high GPU load, pretty high memory load and therfore also very high pressure for northbridge.

So there is a lot things that could possibly go wrong, i'm lost, and don't know where to start from frown.gif

P.S. God, sorry, just noticed that i forgot to enable my rig in signature, now you can see my whole specs.

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