Club3D Radeon HD 7790 Crossfire review -
Overclocking the graphics card
Overclocking the graphics card
As most of you know, with most video cards you can apply a simple series of tricks to boost the overall performance a little. Typically you can tweak on core clock frequencies and voltages.
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: 1000MHz||Core Clock: 1030MHz||Core Clock: 1200MHz|
|Boost Clock: 1000MHz||Boost Clock: 1030MHz||Boost Clock: 1200MHz|
|Memory Clock: 6000MHz||Memory Clock: 6000MHz||Memory Clock:6400MHz|
The R7790 is really fun to tweak and play with and you will not be disappointed by the results. Coming from a reference 1000 MHz, to 1033 MHz factory overclocked is already a bit of a bump. The reality is that we had it running stable at 1200 MHz with just a few tweaks:
You can use any tweak utility of preference of course, I'm just very handy with AfterBurner hence I use it all the time. But here's what you need to do:
- Increase power limiter to 120%
- Unfortunately we had no voltage control
- Increase core clock frequency to 1200 MHz
- You can leave the fan at default fan RPM
- Memory Set to 6400 MHz
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.
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Club3D Radeon HD 7790 Crossfire review
In this article test and review the Club3D Radeon HD 7790 Crossfire incl Frametimes. If you need a little more value for money then the 13 Series R7790 might be just what you are looking for. This card is all about saving money and costs roughly 130 EUR. Have peek at our review where we'll test the 13 Series from Club3D.
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