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I'm not sure if this is an issue with the graphics card or the CPU, but it's occurring while I'm trying to get a little more speed out of my GPU, so I'm posting here. Allow me to explain...

I've always tried to keep my graphics card at about 80*C or lower, but I'm starting to get more comfortable with letting it get a little higher, so I'm trying to increase my clock speeds a little more and keep it around 86*C or lower.

I'm using MSI Afterburner to perform the voltage changes and the clock changes, and I'm using a variety of software to test temps and stability. I use MSI Kombuster 2.3 for quick temp checks while making adjustments, I use Furmark, and I use EVGA OC Scanner to check for artifacts.

My CPU is at a stable overclock of 4.4GHz at about 1.168V. My gpu has been at a stable overclock of 900MHz at 0.975V.

I upped my voltage to 1.000V and upped the clock to 915MHz to see what the deal was. I got temps maxing up to 87*C and decided to check for artifacts. I opened EVGA OC Scanner and about 20 seconds in, my entire screen froze. It didn't go black, it just froze. I waited a bit thinking it was a video card driver crash, but it never came back, so I rebooted. Before entering into windows, I went ahead and bumped up my offest voltage for the CPU by an additional +0.05V incase for whatever reason it was a weird CPU crash issue (but mind you, I'm at a stable clock already which has been verified by a lot of hours in Prime95 and an hour or so of Intel Burn Test).

So I went back and bumped my GPU clock all the way down to 900MHz and just left the voltage a 1.0V. Went into OC Scanner again and about 20 seconds or so in, it froze again!

So I rebooted, dropped the GPU voltage down to 0.987V and started a combination of Intel Burn Test and Furmark to make sure it's not an issue with simultaneous CPU and GPU loads. I ran IBT at high with 3 threads to allow a little CPU power to allow the GPU to run at a high load. I then ran Furmark in windowed mode at 1920x1080. This combination ran for about 40 minutes without crashing.

I shutdown the tests and closed all the software except MSI Afterburner and opened EVGA OC Scanner again, 6 seconds in, it all freezes again.

Any ideas as to what is causing this?
Black Betty
(20 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 3570K @ 4.4GHz (1.168V) ASUS P8Z77-V LK EVGA GeForce GTX 560 DS SSC  Corsair Vengence 8GB 
Hard DriveHard DriveHard DriveOptical Drive
OCZ-Agility3 90GB SSD OCZ-Agility4 64GB SSD Western Digital Blue 500GB HDD ASUS 24x DVD Burner 
Optical DriveCoolingCoolingOS
Vantec 58-in-1 Internal Card Reader/Writer COOLER MASTER Hyper 212 EVO 4 Antec Case Fans Windows 7 Ultimate 
OSMonitorKeyboardPower
Linux OS Ubuntu ASUS VE228 Logitech K120 CORSAIR HX750 
CaseMouseMouse PadAudio
Antec Gaming Series One Illusion Logitech M500 Allsop Memory Foam Mouse Pad Creative Stereo 2.1 A120 
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Black Betty
(20 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 3570K @ 4.4GHz (1.168V) ASUS P8Z77-V LK EVGA GeForce GTX 560 DS SSC  Corsair Vengence 8GB 
Hard DriveHard DriveHard DriveOptical Drive
OCZ-Agility3 90GB SSD OCZ-Agility4 64GB SSD Western Digital Blue 500GB HDD ASUS 24x DVD Burner 
Optical DriveCoolingCoolingOS
Vantec 58-in-1 Internal Card Reader/Writer COOLER MASTER Hyper 212 EVO 4 Antec Case Fans Windows 7 Ultimate 
OSMonitorKeyboardPower
Linux OS Ubuntu ASUS VE228 Logitech K120 CORSAIR HX750 
CaseMouseMouse PadAudio
Antec Gaming Series One Illusion Logitech M500 Allsop Memory Foam Mouse Pad Creative Stereo 2.1 A120 
  hide details  
Reply