AMD Radeon HD 6870 X2 vs AMD Radeon HD 7770 GHz Edition
Grafikprozessor
| GPU Name | Barts | Cape Verde |
|---|---|---|
| GPU Variante | Barts XT (215-0798000) | Cape Verde XT |
| Architektur | TeraScale 2 | GCN 1.0 |
| Hersteller | TSMC | TSMC |
| Prozessgröße | 40 nm | 28 nm |
| Transistoren | 1,700 million | 1,500 million |
| Chipgröße | 255 mm² | 123 mm² |
Grafikkarte
| Veröffentlichungsdatum | Jul 8th, 2011 | Feb 15th, 2012 |
|---|---|---|
| Generation | Northern Islands | Southern Islands |
| Produktion | End-of-life | End-of-life |
| Originalpreis | 520 USD | 159 USD |
| Businterface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Reviews | 170 in our database | 97 in our database |
| Vorgänger | Evergreen | Northern Islands |
| Nachfolger | Southern Islands | Sea Islands |
Takt-Geschwindigkeiten
| GPU-Taktung | 900 MHz | 1000 MHz |
|---|---|---|
| Speicher-Taktung | 1050 MHz 4.2 Gbps effective | 1125 MHz 4.5 Gbps effective |
Speicher
| Speichergröße | 1024 MB | 1024 MB |
|---|---|---|
| Speichertyp | GDDR5 | GDDR5 |
| Speicherbus | 256 bit | 128 bit |
| Bandbreite | 134.4 GB/s | 72.00 GB/s |
Render-Konfiguration
| Shading-Einheiten | 1120 | 640 |
|---|---|---|
| TMUs | 56 | 40 |
| ROPs | 32 | 16 |
| Compute Units | 14 | 10 |
| Cache L1 | 8 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 512 KB | 256 KB |
Theoretische Leistung
| Pixelrate | 28.80 GPixel/s | 16.00 GPixel/s |
|---|---|---|
| Texturrate | 50.40 GTexel/s | 40.00 GTexel/s |
| FP32 (float) Leistung | 2.016 TFLOPS | 1,280 GFLOPS |
| FP64 (double) Leistung | — | 80.00 GFLOPS (1:16) |
Boarddesign
| Steckplatzbreite | Dual-slot | Dual-slot |
|---|---|---|
| Länge | 304 mm 12 inches | 210 mm 8.3 inches |
| TDP | 300 W | 80 W |
| Vorgeschlagenes Netzteil | 700 W | 250 W |
| Ausgabe | 2x DVI1x HDMI2x mini-DisplayPort | 1x DVI1x HDMI2x mini-DisplayPort |
| Stromverbindung | — | 1x 6-pin |
| Board-Nummer | — | C441, C468 |
Grafik-Features
| DirectX | 11.2 (11_0) | 12 (11_1) |
|---|---|---|
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | — | 1.2 |
| Shader-Modell | 5.0 | 5.1 |
