Ok so I bought a GTX 260 from Evga, its supposed to have 192 Shaders, but GPU-Z says that it has 216. Whether I actually do have 216 shaders or not would be nice to know, although that's not the reason I'm posting today.
For future reference my GTX 260's stock speeds are 576 Core / 1242 Shader / 999 Memory.
Today I installed RivaTuner, saw that my GPU's fan was at 40%, so I upped it to 100%. I then opened AtiTools and ran the 3d cube. My temps maxed out in the low 50's. I of course proceeded to overclock the card. Also I didn't run Atitool for more than 5 mins each time I upped the speed. I wasn't checking for long term stability yet.
I was able to get the card to around 750 / 1620 / 1215 before I saw a single artifact (and when it made that one it made another every few seconds). The problem comes from the fact that I was only able to even test that speed once. Every other time I've tried within 2 secs the card reverts to its low power 3D settings and refuses to go higher until I reboot my PC (then it works until I try that OC again). Nothing I do can get it back above 400 / 800 / 300. All the settings in Atitool, rivatuner, and GPU-Z show my correct overclock, the card just refuses to go into performance 3D mode. It'll swap back and forth between Standard 2D and Low Power 3D mode like it does normally, it just won't go all the way to full 3D mode, even in games. (lol@crysis in Low power 3d)
Oh and if I revert the OC to default timings (576/1242/999), it still won't go into Performance 3D.
My question is whats causing that?
I have a 680W PSU and only 1 video card and HDD, my PCI slots are empty also. It could be a voltage problem on the GPU but I thought I'd get major instability or artifacting if that was the case, not actually being locked entirely out of performance 3D mode (still kinda new to OC'ing though). My temps also never got about 60C during the entire OC process.
OH and one last thing during one of my tests around the 730 / 1566 / 1215 range the video card made an odd whining noise, it kinda sounded like a fan spinning up then slowing down over and over again, but just a high pitched whine no change in air noise or mechanical noise like a fan would make. From looking online it seems like people are saying it comes from capacitors or its coil whine (?) or something. Just curious if its something I should be worried about.
Computer Specs:
Vista Ultimate 64-bit
Core 2 Duo E6600@ 2.4 Ghz
G.skill 2GB DD2-800
ASUS P5Q PRO mobo
Seagate 1.5TB HDD
Nvidia GTX 260 (180.84 beta)
random cheap DVD Burner.
680W PSU
Rivatuner = v2.21, Atitool = 0.27b4, GPU-Z = 0.3.0
For future reference my GTX 260's stock speeds are 576 Core / 1242 Shader / 999 Memory.
Today I installed RivaTuner, saw that my GPU's fan was at 40%, so I upped it to 100%. I then opened AtiTools and ran the 3d cube. My temps maxed out in the low 50's. I of course proceeded to overclock the card. Also I didn't run Atitool for more than 5 mins each time I upped the speed. I wasn't checking for long term stability yet.
I was able to get the card to around 750 / 1620 / 1215 before I saw a single artifact (and when it made that one it made another every few seconds). The problem comes from the fact that I was only able to even test that speed once. Every other time I've tried within 2 secs the card reverts to its low power 3D settings and refuses to go higher until I reboot my PC (then it works until I try that OC again). Nothing I do can get it back above 400 / 800 / 300. All the settings in Atitool, rivatuner, and GPU-Z show my correct overclock, the card just refuses to go into performance 3D mode. It'll swap back and forth between Standard 2D and Low Power 3D mode like it does normally, it just won't go all the way to full 3D mode, even in games. (lol@crysis in Low power 3d)
Oh and if I revert the OC to default timings (576/1242/999), it still won't go into Performance 3D.
My question is whats causing that?
I have a 680W PSU and only 1 video card and HDD, my PCI slots are empty also. It could be a voltage problem on the GPU but I thought I'd get major instability or artifacting if that was the case, not actually being locked entirely out of performance 3D mode (still kinda new to OC'ing though). My temps also never got about 60C during the entire OC process.
OH and one last thing during one of my tests around the 730 / 1566 / 1215 range the video card made an odd whining noise, it kinda sounded like a fan spinning up then slowing down over and over again, but just a high pitched whine no change in air noise or mechanical noise like a fan would make. From looking online it seems like people are saying it comes from capacitors or its coil whine (?) or something. Just curious if its something I should be worried about.
Computer Specs:
Vista Ultimate 64-bit
Core 2 Duo E6600@ 2.4 Ghz
G.skill 2GB DD2-800
ASUS P5Q PRO mobo
Seagate 1.5TB HDD
Nvidia GTX 260 (180.84 beta)
random cheap DVD Burner.
680W PSU
Rivatuner = v2.21, Atitool = 0.27b4, GPU-Z = 0.3.0