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Windows 7: Gfx slow and then BSOD.

26 Mar 2011   #31
aggixx

Windows 7 Ultimate x64 SP1
 
 

Installing SP1 for general performance and security increase.

Dave76:

Just realized my specs on my profile are outdated and are from my previous rig. I will update my system specs and post the requested information ASAP. I have already run multiple MemTests on both sticks of RAM using all 4 motherboard slots, with no errors.

Edit: Specs updated. CPU-Z snips added. SpeedFan temps added (note idle means chrome, ventrilo, explorer, skype etc). Note that I am currently running stock CPU fan because I temporarily can't use my Cooler Master 212+


My System SpecsSystem Spec
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26 Mar 2011   #32
Dave76

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
 
 

Do you get memtest86+ errors with both 2GB RAM cards installed?

Everything looks good, in BIOS what is your VDDNB voltage set at?
Should be default 1.10v unless you have changed it.
This is the North Bridge memory controller, bumping the voltage a little will help with RAM stability.
Don't go too high you can cause serious damage.

If your VDDNB is set at 1.10v then increase the VDDNB to 1.20v.
Install both RAM cards and try to re-create the BSoD scenario or run memtest86+ if it has not passed memtest86+ with both RAM cards installed previously.

Let us know the results.
My System SpecsSystem Spec
26 Mar 2011   #33
aggixx

Windows 7 Ultimate x64 SP1
 
 

My RAM has passed 10+ passes with both sticks installed, and 5+ with the two sticks individually.

All voltages in the BIOS are set to Auto (and I'm starting to realized Auto is the devil).
My System SpecsSystem Spec
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26 Mar 2011   #34
Dave76

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
 
 

Are your RAM timings set to auto as well?

You will get better stability if you manually set the first four timings as per your SPD tab, leave the rest on Auto.
Which is 9-9-9-25.
You will also get better stability by setting the 'Command Rate' to 2T from the current 1T.
These changes will not noticeable affect performance, but will help with stability.

The RAM frequency is currently at 666.7 MHz, this is fine, no need to change it.

Are you going to change the VDDNB voltage to 1.20v?

Memtest86+ runs different tests with each pass, it is best to let it complete 8 passes.

Disclaimer:
Although memtest86+ is probably one of the best RAM testing software available, there is no software that is 100% accurate in finding RAM errors/faults.
Just because RAM passes multiple tests doesn't mean the RAM is not causing BSoDs.

Adjusting timings and voltages does improve stability. Auto settings are known to be the cause of hard to find errors and BSoDs.

Let us know which adjustments you are changing, it is your choice. The previously suggested changes are widely given on many sites and can improve stability.
My System SpecsSystem Spec
26 Mar 2011   #35
aggixx

Windows 7 Ultimate x64 SP1
 
 

The RAM is designed to run at 800 MHz, but needs to be overclocked to reach that speed.

I plan on changing the timings and command rates tonight.
My System SpecsSystem Spec
27 Mar 2011   #36
Dave76

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
 
 

I would strongly recommend not to change the RAM frequency to 800MHz (RAM speed 1600MHz), there are known issues with this speed on AMD CPUs.
If you want to try the RAM at 1600MHz, get everything else adjusted so your system is running 100% stable.
When you try the 1600MHz for RAM, then you will know the cause of BSoDs.


There is a known issue with AMD CPUs integrated memory controllers having problems running RAM at 1600 MHz and above.

VERY IMPORTANT INFORMATION REGARDING AMD AM3 CPU's and RAM SPEEDS
My System SpecsSystem Spec
27 Mar 2011   #37
mgorman87

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64bit
 
 

I was working on a friends computer who had an AM3 and his RAM was also 1600mhz but the BIOS would default to 1333mhz. When I bumped up the BIOS to 1600mhz I would run into a lot of memory errors. I don't think you would see that much of a difference between 1600 and 1333.
My System SpecsSystem Spec
27 Mar 2011   #38
Dave76

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
 
 

Read the above link, it explains the issue.

Strange but, a lot of people are experiencing it.
My System SpecsSystem Spec
27 Mar 2011   #39
aggixx

Windows 7 Ultimate x64 SP1
 
 

Thanks for that info, something I definitely didn't know. I changed the timings and command rate like you suggested, and I'm going to throw some stress onto this thing to see if it holds.

Edit: BSOD'd with those settings, after some trouble getting it to boot again, I changed the VDDNB voltage to 1.2000. I then had some trouble with "Overclocking Failed!" errors during post, so I changed the RAM to ganged as suggested in that link you posted. It turns out after looking at the link again, it was talking about ganged causing OC fails and not unganged, so . Either way, I'm booted now and I'll see if the voltage change helps. The Overclocking Failed! error seems to just be in the way and not really mean much.

Quote:
AMD recommend running RAM in Unganged mode.
From my own testing, RAM above 1333 Mhz can be extremely fussy if you insist on trying to run in Ganged Mode and will often return an Overclock warning at start-up and revert to 1333 Mhz., by default. In most modern mult-threaded applications there is actually no loss in performance when running in Unganged Mode and, in some instances, Unganged mode is actually superior.
Edit #2: Another BSOD, changed it back to unganged mode. Removed 1 of the sticks so I can run stable until I can get more suggestions. This time I'm running on the new stick of RAM, and the old one is sitting in an anti-static bag.
My System SpecsSystem Spec
27 Mar 2011   #40
Dave76

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
 
 

Did you run with the RAM timings set in manual, unganged, Command Rate 2T, VDDNB voltage 1.200v, and both RAM cards installed?
The 'ganged' mode may have caused the crash.

What is the DRAM voltage in BIOS?
The voltage numbers in CPUZ are recommended and not actual.

If you are running as mentioned above and have a crash, let me know the DRAM voltage, bump the VDDNB to 1.240v and test for stability.
My System SpecsSystem Spec
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 Gfx slow and then BSOD.




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