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HD 7950 H75 Mod - Page 2

post #11 of 23
Just noticed you don't have anything cooling the vram or vrm's. You have a reference style cooler and could throw your heatsink in the oven till the copper heatsink falls off. The you can reattach the heat spreader plate with the fan to help cool those. That's how I'm running mine. Just make sure you remove the fan and any plastic before you throw it in the oven.

Hey, I also noticed in the pic with gpu-z that all those temps were only at 61 percent load. You using afterburner? Even if you aren't using it to overclock it's a good way to monitor gpu usage and core speed to see if you are throttling. Took some fiddling to get both my cards to good usage and no throttling.
Edited by boredmug - 3/30/14 at 10:42pm
post #12 of 23
Thread Starter 
yea I have afterburner on, I'm using it to bring down the clocks and voltage. clocks come down, but voltage seems to want to stay at 1.25 on full load. The reason that it says 60% percent is, because I alt-tab to take a pic of the screen with my iphone. So the load drops as well as the temp. But like I said, upon hitting display max, it tells me my roofline. I may try to overclock, but I definitely can run the game at 835 and 1200 for vram. Its a bit stuttery, but runs smooth no crashing. Wait till I get the fx 8350, with the sabertooth and a new ram set. Going to go with 2 sticks instead of 4 for better cooling. I had a cooler on my ram, but took it off, due to it hanging and applying pressure on the socket. So overall I'm happy with the setup so far, budget is limited. As far as the heatsink goes, its so heavy, the oem cooler is currently sitting in the trashcan beside me. I want to get those tiny cubed heatsinks, and just thermal paste them on. Should work, with maybe a fan blowing on them?

edit* what are you core vrm and vram temps with your enclosed liquid cooler and the stock heat plate (mine is black) and fan?
my core gets up to 48C vrms at around 55c and 50C vram, I havent tracked that, wondering how?

edit #2* we should be running the same voltage on full load, 1.25 and taking in the boosted clocks into account you should be running a few degrees hotter. I've noticed that my cooler is next to my psu and is in a corner which is a bit hotter. going to try to push everything forward and space it out for even better cooling. Once I get my 3 pin to molex adapters and 4 molex fans, all that is going to run of the psu directly, will report those temps.

edit #3*
QADBRjoD.jpg

using afterburner kombustor @ 55 fps, temps shot up to 60-55C vrm1 & 2, core @ 48C. my cpu pleasantly at 34C lol, will post some pics with bf4 as a test, maybe 3ds max
Edited by djkomrad - 3/31/14 at 5:35pm
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post #13 of 23
here is a quick run through 3dmark 11. Clocks at 1200/1600@1.250v. max gpu1 was 48, max gpu2 was 47. Vrm gpu 1= 58,47 VRM gpu 2 = 62,45.

Edited by boredmug - 3/31/14 at 6:43pm
post #14 of 23
Thread Starter 
3zjvDyC1.jpg

upped the clocks back to stock 925/1250. running @ 81C/62C, core @ 60C. bf4 on ultra, no more stuttering, runs perfect. should I be afraid of the heat?
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post #15 of 23
Weird that your card gets that hot. What is the voltage at? My vrm's only get that hot at 1250/1600 and gpu core is still cooler..
post #16 of 23
Thread Starter 
core vdc is 1.250V vram voltage appears to be 1.602V vrm at 1.155V. im thinking of adding another enclosed liquid cooler to somehow cool the vram/vrm
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post #17 of 23
At that voltage I can hit 1200 on the core. You could probably undervolt your card quite a bit and lower temps. At 1.094v (stock voltage for my card) i could hit 1040 on the core. Just get some heatsinks and a fan on them..
post #18 of 23
Also, i flashed the boost bios to one of my bios switches and it sucked monkey balls. Maybe flip your bios switch and try the other one? Gpu usage and core speed was all over the place with the boost bios. I prefer the bios on the oldest of my two cards. Flashed it to both cards after modifying it a little.
post #19 of 23
Thread Starter 
lol how do you do all that? right now gpu overdrive is turned off in CCC and afterburner aint running, so its at its stock clocks 925 1250. i cant find any settings in mobo bios for pcie. so i have no idea how to change voltage, afterburner doesnt seem to work
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post #20 of 23
I use the beta version of afterburner. I like the extra features. It should let you change voltage. Or Google afterburner /xcl
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