As most of you know, with most videocards you can apply a simple series of tricks to boost the overall performance a little. You can do this at two levels, namely tweaking by enabling registry or BIOS hacks, or very simply to tamper with Image Quality. And then there is overclocking, which will give you the best possible results by far.
What do we need? One of the best tools for overclocking NVIDIA and ATI videocards is our own AfterBurner which will work with 90% of the graphics cards out there. We can really recommend it, download here.
Where should we go? Overclocking: By increasing the frequency of the videocard's memory and GPU, we can make the videocard increase its calculation clock cycles per second. It sounds hard, but it really can be done in less than a few minutes. I always tend to recommend to novice users and beginners, to not increase the frequency any higher than 5% on the core and memory clock. Example: If your card runs at 600 MHz (which is pretty common these days) then I suggest that you don't increase the frequency any higher than 30 to 50 MHz.
More advanced users push the frequency often way higher. Usually when your 3D graphics start to show artifacts such as white dots ("snow"), you should back down 10-15 MHz and leave it at that. Usually when you are overclocking too hard, it'll start to show artifacts, empty polygons or it will even freeze. Carefully find that limit and then back down at least 20 MHz from the moment you notice an artifact. Look carefully and observe well. I really wouldn't know why you need to overclock today's tested card anyway, but we'll still show it.
All in all... do it at your own risk.
Core Clock: 775MHz
Core Clock: 860MHz
Core Clock: 1017MHz
Shader Clock: 775MHz
Shader Clock: 1017MHz
Memory Clock: 4000MHz
Memory Clock: 4800MHz
Now we increased the fan RPM control to 75% which is not too noise but audible. We do this as we'll be voltage tweaking the graphics card. We reached a very nice overclock showing a bump in overall performance.
Voltage tweaking was done with AfterBurner (download here), we applied 1250MMv on the core. Our stable end result was 1017 MHz on the core and 4800 MHz on the memory. The temps did increase, but remained stead at roughly 65 Degrees C only. DBA levels go up towards 42~43 DBa if you use roughly 75% fan RPM. All acceptable.
Here's what that does towards overall game performance.
Above Call of Duty: Modern Warfare 2, maxed out image quality settings as before with 4xAA 16xAF
Above Battlefield Bad Company 2, maxed out image quality settings as before with 8xAA 16xAF
Above we can see 3DMark 11 - the Performance mode is applied here. Compared over a reference R6850 we gain 20 to 25% performance and roughly 10% from the MSI factory clocks. Pretty impressive stuff alright.
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