Page 1:Meet Radeon HD 7770 And 7750
Page 2:Overclocking With XFX’s R7770 Black Edition Overclocked
Page 3:Flexible Form Factors And Tessellation Performance
Page 4:Test Setup And Benchmarks
Page 5:Benchmark Results: 3DMark 11
Page 6:Benchmark Results: Battlefield 3
Page 7:Benchmark Results: Crysis 2
Page 8:Benchmark Results: Elder Scrolls V: Skyrim
Page 9:Benchmark Results: DiRT 3
Page 10:Benchmark Results: World of Warcraft: Cataclysm
Page 11:Benchmark Results: Metro 2033
Page 12:Benchmark Results: Sandra 2012
Page 13:Benchmark Results: MediaEspresso And Luxmark 2.0
Page 14:Power Consumption
Page 15:Temperature And Noise
Page 16:Cape Verde: All About Performance/Watt
Overclocking With XFX’s R7770 Black Edition Overclocked
A great many board partners will be selling Radeon HD 7770 and 7750 cards at launch, according to AMD. One of those vendors, XFX, sent us its flagship Cape Verde-based card, the R7770 Black Edition Overclocked.
A number of distinctions separate XFX’s card from AMD’s reference board. Aftermarket cooling is perhaps the most obvious. The R7770 Black Edition Overclocked employs a pair of axial fans spinning over aluminum fins attached to a copper heat sink. At idle, the combination is as close to silent as you can get. Under a 10-loop Metro 2033 load test, I measured 37.4 dB(A) from one meter away—quieter than some other cards’ idle acoustic output.
Of course, as its name suggests, the card ships overclocked, too. A 1120 MHz core and 1300 MHz memory setting are fairly significant increases over AMD’s own design. And those frequencies are made more notable by the fact that they don’t negatively impact thermals. Even as the card generates minimal sound, core temperatures hover one degree lower than the reference board.
XFX claims that such a seemingly-impossible combination of less noise, less heat, and more performance is made possible through a process called GPU edging, whereby the top 1% of GPUs are set aside based on their ability to overclock without pushing higher power levels.
Capitalizing on XFX’s binning process, we pushed the card even further and found stability with a 1150 MHz core and 1325 MHz memory clock.
At its highest overclock, the R7770 Black Edition is nearly able to match a GeForce GTX 560. We’ll have to see what sort of premium XFX charges for its most highly-tuned card. But there’s not much room above AMD’s $160 suggested price before bumping into the $185 or $190 most GTX 560s currently sell for.
- Meet Radeon HD 7770 And 7750
- Overclocking With XFX’s R7770 Black Edition Overclocked
- Flexible Form Factors And Tessellation Performance
- Test Setup And Benchmarks
- Benchmark Results: 3DMark 11
- Benchmark Results: Battlefield 3
- Benchmark Results: Crysis 2
- Benchmark Results: Elder Scrolls V: Skyrim
- Benchmark Results: DiRT 3
- Benchmark Results: World of Warcraft: Cataclysm
- Benchmark Results: Metro 2033
- Benchmark Results: Sandra 2012
- Benchmark Results: MediaEspresso And Luxmark 2.0
- Power Consumption
- Temperature And Noise
- Cape Verde: All About Performance/Watt