Amd radeon hd 7800 series overclock how to#
Amd radeon hd 7800 series overclock full#
Amd radeon hd 7800 series overclock series#

First clock your memory to the highest stable speed and stress test for decreases in performance.ДЇlash to the asus 5970 bios and use smartdoctor to get your core/engine voltage to ~1.45v, however ASUS bios clocks in CCC are still capped at 1000mhz. Rivatuner in combination with the knowledge from the voltage soft-mod threads linked at the bottom of this post may help you.

Amd radeon hd 7800 series overclock how to#

If you know how to control the I2C values, it's possible to set your memory voltage higher than 1.15v (1.15v is maximum Vmem available via the ATI overvolt tool). You're going to need an ASUS voltage tweak 5970 bios (for use with smartdoctor), afterburner edited with unlocked CCC limits, ASUS smart doctor, and all the other basic software. VRMS, not core temps are your limiting factor. If you can cool the dozen or so voltage regualtors that love to reach the boiling point ( ), then you can oc to the max.

Amd radeon hd 7800 series overclock full#

Super disclaimer: Not responsible for destroyed cards.Д¬ards on full cover water might reach 1200mhz core / 1400mhz mem. There is always a balance between happy hardcore overclockers and unhappy beginners and vice versa. That is why it is hidden that deep in RivaTuner and available to power users only. Probably giving easy voltage controls to beginners was not a good idea. If you REALLY need to run those tools together, disable voltage controller monitoring in all of them but one. Trying to display VRM status in ANY combination of AMDGPUClockTool, GPU-Z, Everest and Afterburner is DANGER. It CAN be dangerous, especially if some other tool is WRITING some data to VRM (and tools that monitor VRM temperatures WRITE data to VRM). However, keep in mind that this interface is incompatible with PowerPlay (so your 5870 will start eating 100+W instead of 20W in idle).ДON'T TRY to use multiple tools accessing voltage controller AT THE SAME time. These tools can optionally use advanced undocumented AMD overclocking interface bypassing the limits. AMD allows some vendors to have higher reachable clock limits that others.Дў) Use AMD BIOS editors like RBE, some of them are able to override AMD limitations and edit overclocking limits.ДЈ) Use AMDGPUTool, ATITool or RivaTuner. There are 3 ways to get past AMD clock limit:ДЎ) Get new BIOS from your vendor with extended overclocking limits if possible. You have to manually increase the clocks and observe the framerate until you find the point where performance drops.

Amd radeon hd 7800 series overclock series#

As a result a normal 'artifact scanning' approach to memory overclocking on the HD 5800 Series will not work. The only difference is that performance drops, the further you increase the clocks, the lower the performance gets. So once you exceed the 'stable' clock frequency, memory errors will appear more often, get retransmitted, but the rendered output will still look perfectly fine. Thanks to the new error correction algorithm in the memory controller, every memory error is just retransmitted until everything is fine. Normally you'd expect rendering errors or crashes, but not with these cards. So I ran a quick test at 1.30 V GPU and reached a maximum core clock of 1000 MHz.ДЄs mentioned in the HD 5870 article, overclocking the memory on these cards is quite different from any other card so far.

The default voltage of 1.09 V is quite low and there is plenty temperature headroom as well. I would also like to point out that you can increase the voltage for better GPU overclocking. In essence you can get a HD 5850 and overclock it to almost HD 5870 performance levels in just a few minutes. The memory chips are exactly the same as on the HD 5870, which results in roughly the same maximum memory clock. The maximum core clock of 835 MHz is clear evidence that this GPU ended on a HD 5850 because it could not handle the HD 5870 clock speeds of 850 MHz.

As a percentage those overclocks are really nice.

For your reference, the defaults are 725 / 1000 (GPU-Z is showing the wrong values due to a bug which will be fixed in the next version). The overclocks of our card are 835 MHz core (15% overclock) and 1260 MHz Memory (26% overclock).