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GTO2 fan stops with artifact testing

Joined
Mar 13, 2006
Messages
48 (0.01/day)
Processor i5 2500K @ 4.5GHz
Motherboard ASRock Extreme4 Gen3
Cooling Swiftech Apogee XT
Memory 2x4GB 1600MHz 8-8-8-24-1T
Video Card(s) 2x Sapphire 7950 100352-3L
Storage 1 Samsung 830 256G, 1 Samsung 1TB
Display(s) Dell 2209WA
Case Silverstone Raven 2
Audio Device(s) X-Fi Titanium Fatal1ty
Power Supply XFX 850W Black Edition
Software Windows 7 Ultimate x64
I've had my GTO2 for about 3 months now and been using ATITool 0.24 without any problems. Overclocked my GTO2 to XT speeds (520/540) no artifacts according to ATITool, I ran the artifact tester for an hour. I'm still using the stock cooler and the stock BIOS (shipped with 16 pipes).

Today I wanted to test how hot it gets in my case with different fan speeds on my front intake fan. I thought an easy way would be to run the artifact tester since it puts your GPU and CPU on load. So without touching my case fan speeds, I loaded up ATITool, loaded up my 520/540 profile and ran the artifact tester. After about 10 minutes, I heard the fan stop. I opened up my case to check, and the fan wasn't spinning. I've tried this numerous times with and without overriding the fan controls, with a reboot in between. The fan still stops at around 10 mins.

At first I thought my stock cooler was dying. The weird thing is, as soon as the fan stops, it will start again if I set it at a fixed percentage, I can also set it back to dynamic by clicking on apply.

Then I thought, maybe it's ATITool? I've been using 0.24 ever since I got the card without any problems at all with the fan. Just to be sure, I uninstalled 0.24, then installed 0.25 Beta. Exact same result.

This only seems to happen using the artifact tester. I can play Oblivion for over an hour with no problems at all. But why would it do this all of a sudden, I've ran the artifact tester for 30-60 mins numerous times? Any ideas? I'm gonna try and do more testing.

Thanks.
 
Joined
Mar 13, 2006
Messages
48 (0.01/day)
Processor i5 2500K @ 4.5GHz
Motherboard ASRock Extreme4 Gen3
Cooling Swiftech Apogee XT
Memory 2x4GB 1600MHz 8-8-8-24-1T
Video Card(s) 2x Sapphire 7950 100352-3L
Storage 1 Samsung 830 256G, 1 Samsung 1TB
Display(s) Dell 2209WA
Case Silverstone Raven 2
Audio Device(s) X-Fi Titanium Fatal1ty
Power Supply XFX 850W Black Edition
Software Windows 7 Ultimate x64
I figured out what the problem is. Here's the fan settings I had before:


As you can see, I left some fields blank. When the GPU hits 65C, the fan would stop. The reason this hasn't happened before, is becuase my GPU never hit 65, but yesterday was a really warm day.

By filling in all the fields:


It works now, the fan doesn't stop anymore.
 
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