Page 1:The New Radeon HD 6000 Family
Page 2:Radeon HD 6800-Series Architechture
Page 3:Stereoscopic 3D With AMD’s HD3D
Page 4:Morphological Anti-Aliasing
Page 5:Eyefinity, UVD3, And AMD APP Compute
Page 6:AMD's Radeon HD 6870 1 GB
Page 7:AMD's Radeon HD 6850 1 GB
Page 8:Test Setup And Benchmarks
Page 9:Benchmark Results: Synthetics
Page 10:Benchmark Results: Metro 2033
Page 11:Benchmark Results: Lost Planet 2
Page 12:Benchmark Results: Aliens Vs Predator
Page 13:Benchmark Results: Battlefield: Bad Company 2
Page 14:Benchmark Results: StarCraft 2
Page 15:Benchmark Results: Civilization V
Page 16:Benchmark Results: DiRT 2
Page 17:Benchmark Results: Just Cause 2
Page 18:Anti-Aliasing Benchmarks
Page 19:Overclocking Benchmarks
Page 20:CrossFire/SLI Benchmarks
Page 21:HQV 2.0 Video Playback Quality Benchmark
Page 22:Power, Temperature, And Noise Benchmarks
Page 23:The Radeon HD 6800 Verdict
Built on the same 40 nm process as their predecessors, the new Radeon HD 6800-series cards should have similar overclocking headroom as their Radeon HD 5800-series predecessors, and that means 1 GHz is an achievement, even with a voltage increase.
The Radeon HD 6850 turns out to be quite the overclocker, which is not much of a surprise when you consider its stock 775 MHz core clock. This card manages to go all the way to 900 MHz (core), which requires the use of MSI's Afterburner utility. AMD's Overdrive utility caps the Radeon HD 6850 at 850 MHz. The card's memory isn't nearly as accommodating, allowing a mere 50 MHz increase.
On the other hand, the Radeon HD 6870 is a relative overclocking miser, restricting stable running to a mere 50 MHz boost (core). This results in a 950 MHz clock speed, quite close to the 1 GHz ceiling we mentioned earlier. It would be interesting to see what a voltage increase would allow. As for the memory, the card was completely unhappy with anything but the stock 1050 MHz speed.
Note that we've included the EVGA GeForce GTX 460 FTW Edition card in these benchmarks to show what a highly-clocked GeForce GTX 460 1 GB can do. Again, we've allowed the Radeon HD 5870 to strut it's stuff as well.
Aliens vs Predator is an ideal benchmark for an overclocking test because its performance is decidedly GPU-limited. In this test, we see a notable gain from the Radeon HD 6850 overclock, but not much from the Radeon HD 6870's best effort.
The EVGA GeForce GTX 460 FTW edition card gives a very strong performance compared to the regular GeForce GTX 460, suggesting that this is, indeed, an overclocked card to be reckoned with.
The $350+ Radeon HD 5870 walks away with an easy win, showing exactly what 1600 shader cores bring to the game.
- The New Radeon HD 6000 Family
- Radeon HD 6800-Series Architechture
- Stereoscopic 3D With AMD’s HD3D
- Morphological Anti-Aliasing
- Eyefinity, UVD3, And AMD APP Compute
- AMD's Radeon HD 6870 1 GB
- AMD's Radeon HD 6850 1 GB
- Test Setup And Benchmarks
- Benchmark Results: Synthetics
- Benchmark Results: Metro 2033
- Benchmark Results: Lost Planet 2
- Benchmark Results: Aliens Vs Predator
- Benchmark Results: Battlefield: Bad Company 2
- Benchmark Results: StarCraft 2
- Benchmark Results: Civilization V
- Benchmark Results: DiRT 2
- Benchmark Results: Just Cause 2
- Anti-Aliasing Benchmarks
- Overclocking Benchmarks
- CrossFire/SLI Benchmarks
- HQV 2.0 Video Playback Quality Benchmark
- Power, Temperature, And Noise Benchmarks
- The Radeon HD 6800 Verdict