Total Performance Rating
The TPR graph is a combination of all our benchmarks in which NVIDIA and ATI are on an even playing field.
The TPR number is a combination of:
3DMark Vantage, Heaven Benchmark V2, Resident Evil 5, Tom Clancy's H.A.W.X., Mafia 2 (PhysX Off), Lost Planet 2, Aliens vs. Predator, Final Fantasy XIV, Street Fighter IV, Far Cry 2, Batman: Arkham Asylum (PhysX Off) and our four High Quality tests which include Mafia 2, Aliens vs. Predator, Street Fighter IV and Far Cry 2.
All of the benchmark results achieved are then combined into a single number. As this graph will grow over time and cards won't be re-tested, next to each model you'll find the driver version that was used when the card was benchmarked.
The TPR paints a really good picture here. What we ultimately see in this graph is what we see in all our other graphs; the HD 6850 at 970MHz / 4300MHz QDR is just a little faster than the HD 6870 at stock speeds.
Before anyone carries on about the GTX 460 being overclocked with the help of voltage as well, you can see on a whole it's slightly faster than the HD 6850 at the aforementioned speeds. But that number is no doubt helped with the fact PhysX is on in 3DMark Vantage, though, and it could well be a battle to the death.