Sunny129
Diamond Member
- Nov 14, 2000
- 4,823
- 6
- 81
thanks for the tip...i'm gonna give that a try. my 5870 fluctuates between the mid 40's and upper 50's over the course of the day (though it probably averages ~55°C), but the stock blower has to run at 60% in order to keep it that cool under a 100% MW@H load. i don't know what that is in terms of RPM b/c my monitoring software only gives me a percentage readout, but i will say that at the currrent speed, it sounds like a small vacuum or a dust buster - in other words, LOUD. its noticeably quieter at 50%, but then the temps creep up into the upper 60's...and with the blower at only ~21% (auto setting) it is virtually silent, but temps will then reach the upper 70's to low 80's under full load.If you want to lower your temps in M@H, downlock your ram. My 4870 ram is running at 175mhz in stead of the default 900 with no effect on completion times. However, this doesn't work on Collatz projects, because those ones need a lot of memory bandwidth unlike M@H.
*EDIT* - i seem to be having trouble trying to downclock the GPU memory. i'm using MSI Afterburner, and every time i lower the memory clock and hit the apply button, the memory clock jumps back up to the default 1200MHz. i did some research and found that its actually somewhat of a common problem with quite a few possible causes. i do believe i set the program options properly, and i made the appropriate changes to the MSIAfterburner.cfg file. i don't have a non-reference GPU w/ non-reference VRM's, so there's no reason i shouldn't be able to both overclock/underclock and overvolt/undervolt. my guess is that there are communication issues between the particular version of MSI i'm using and the particular version of Catalyst GPU drivers i'm using. i guess i'll have to experiment w/ different versions of each and see if that fixes my inability to overclock and overvolt with MSI Afterburner...
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