As most of you know, with most video cards 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: 1000 MHz
Core Clock: 1000MHz
Core Clock: 1200MHz
Boost Clock: 1000 MHz
Boost Clock:1075 MHz
Boost Clock: 1200MHz
Memory Clock: 6008 MHz
Memory Clock: 6008 MHz
Memory Clock: 6400
Now then, overclocking did get more complicated as increasing the Boost functionality has an effect on voltage and thus power consumption which effects the maximum allowed board power and so on. So really it is a matter of trial and error and finding your preferred or maximum balance in terms of extra performance versus noise levels.
We found a very sweet tweak that will bring your boost frequency towards 1267 MHz stable, it will fluctuate depending on power draw / limits. Feel free to try our settings yourself. We applied:
Power Target 120%
GPU clock +125 MHz
Memory clock 1600 (x4) MHz
Fan control RPM default
With the physical board power limit you are going see all cards roughly ending at this overclock and boost frequency. For the memory we ended at 6400 MHz. At this stage the cooler RPM was set at default which kept the noise levels at 38 dBA and thus at silent noise levels.
We now have a hint of extra performance on our hands on top of the factory overclock, have a peek at the results when overclocked.
For all overclocked games above we have used the very same image quality settings as shown before. Overall we have been able to get another 10% performance out of those graphics card.
PowerColor Radeon R9-285 TurboDuo review In this review we look at the new PowerColor Radeon R9-285 TurboDuo. Armed with an ultra silent cooler this Tonga GPU based product bring you high-end gaming at a price of 249 USD - With 2GB of graphics memory ...
PowerColor Devil 13 Dual GPU R9 290X Review Join us in a very dark review of the fastest graphics card on the planet. It's hotter than hell, demonic and hinted as a disciple of the Devil himself, yes as we review the PowerColor Radeon R9 295x2...
PowerColor Radeon R9-290X PCS+ review PowerColor Radeon R9-290X PCS+ review - this beast runs at low temperatures whilst being factory overclocked. The 2816 Stream processor based Hawaii chip will get paired with 4 GB...
PowerColor Radeon HD 7850 SCS3 review We test and review the PowerColor Radeon HD 7850 SCS3 today. This stock clocked Radeon HD 7850 is cooled passively, meaning it has no fans tool it down. That also means it's rather silent as it does not make any noise. But what about temperatures then you must be wondering ?