|HIS Radeon HD 7750 iCooler Video Card|
|Reviews - Featured Reviews: Video Cards|
|Written by Steven Iglesias-Hearst|
|Tuesday, 14 February 2012|
Page 17 of 18
HIS 7750 iCooler Overclocking
Before I start overclocking I like to get a little bit of information, firstly I like to establish operating temperatures and since we know these are nice and the iCooler is very capable we can quickly move on. Next I like to know what the voltage and clock limits are, so I fired up MSI's Afterburner utility. I wasn't able to adjust the vCore due to software limitations. Clock speeds were limited to 1040MHz max on the GPU and 1465MHz (5.86GHz effective) maximum frequency for the memory. This is more than enough range to move forward with and I know I can squeeze every last drop of performance out of the HIS HD 7750 iCooler 1GB. My preferred weapons are MSI Afterburner (v2.2.0 Beta 12) for fine tuning while using FurMark (v1.9.0) to push the GPU.
Without being able to raise the vCore I was able to push the GPU to 950MHz (+150MHz) and the memory to 1175MHz (+50MHz - 4.7GHz effective) which required very little effort at all. I am impressed by the capabilities of the HIS HD 7750 iCooler 1GB video card. I did manage to clock it higher but it was only at this speed that it could pass through every benchmark without crashing.
Armed with a 150MHz GPU core overclock and a 50MHz memory overclock, we went back to the bench and ran through the entire test suite. Overall we saw an average 11.58% increase in scores (at 1920x1080 resolution), with performance on par with 1680x1050 scores. This is very good considering we couldn't adjust the voltage any, which suggests there is more headroom yet to be had.
We also re ran temperature tests at the overclocked speeds at a slightly higher ambient temperature of 26°C. The iCooler on the HIS HD 7750 once again did not fail to please, pushing the temperature up with FurMark saw the GPU load temperature rise to 66°C (46% fan speed). Next I tested at 100% fan speed and the temperature dropped to 56°C, chopping 10°C off the top. Cracking little cooler, or Advanced Micro Device? You decide.
That's all of the testing over, in the next section I will deliver my final thoughts and conclusion.