Visiontek HD 4870 Video Card Review

For the Visiontek HD 4870 I was only able to get a limited overclock on the GPU of 30MHz before it became unstable. This seems to be a pattern with the HD 4870 cards as I achieved the same GPU overclock on the PowerColor HD 4870 I reviewed earlier. On the memory I was able to push out 180MHz for a total speed of 1080MHz, or 4320MHz effective (1080MHz x 4). While this is not a high overclock, this was near the limit of what the Overdrive will allow the GPU to max out at. So the final overclock speeds which the benchmarks will be run at are 780MHz on the GPU and 1080MHz on the memory.