*** Official Radeon HD5800 Series Overclocking Thread ***

[Mungri]

As a few people have said above, something messes up on these cards when overclocking the ram over 1300, to the point that 1450 Mhz performs the same as 1300, and the difference between 1250 and 1300 is tiny.

For benchmarking, you can try running 1300 on 5800s, and 1450 on 5700's, but for everyday use it is best to keep them at 1250 which all of them should easilly handle as that is the rated speed on the ram chips.

The best thing to do for benching and overall performance is to OC the GPU as far as it will go.

The 5770 is ideal for gamers, it just needs to be clocked to 950 / 1250 to bring it up to 4800 performance, then the 5800s are good for enthusiasts, rich people, or anyone playing far above 1920x1200.

It would also be a good idea to wait for factory overclocked 5770s, because I have seen a lot of reviews where they couldnt reach 950 Mhz on them, but maybe because they werent increasing stock volts.

With the 5800s, just buy any and get OC'ing and modding it however you like :p.


I flashed my cards to the Asus bios:



Testing for higher clocks now

I get artifacts at 1050 Mhz, and complete system crash at 1100, so it looks like I'll be sticking to 1000, which is very decent enough