AMD Radeon HD 7870 GHz Edition vs AMD Radeon HD 7950
Grafikprozessor
| GPU Name | Pitcairn | Tahiti |
|---|---|---|
| GPU Variante | Pitcairn XT (215-0828047) | Tahiti PRO (215-0821056) |
| Architektur | GCN 1.0 | GCN 1.0 |
| Hersteller | TSMC | TSMC |
| Prozessgröße | 28 nm | 28 nm |
| Transistoren | 2,800 million | 4,313 million |
| Chipgröße | 212 mm² | 352 mm² |
Grafikkarte
| Veröffentlichungsdatum | Mar 5th, 2012 | Jan 31st, 2012 |
|---|---|---|
| Generation | Southern Islands | Southern Islands |
| Produktion | End-of-life | End-of-life |
| Originalpreis | 349 USD | 449 USD |
| Businterface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Reviews | 95 in our database | 118 in our database |
| Vorgänger | Northern Islands | Northern Islands |
| Nachfolger | Sea Islands | Sea Islands |
Takt-Geschwindigkeiten
| GPU-Taktung | 1000 MHz | 800 MHz |
|---|---|---|
| Speicher-Taktung | 1200 MHz 4.8 Gbps effective | 1250 MHz 5 Gbps effective |
Speicher
| Speichergröße | 2 GB | 3 GB |
|---|---|---|
| Speichertyp | GDDR5 | GDDR5 |
| Speicherbus | 256 bit | 384 bit |
| Bandbreite | 153.6 GB/s | 240.0 GB/s |
Render-Konfiguration
| Shading-Einheiten | 1280 | 1792 |
|---|---|---|
| TMUs | 80 | 112 |
| ROPs | 32 | 32 |
| Compute Units | 20 | 28 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 512 KB | 768 KB |
Theoretische Leistung
| Pixelrate | 32.00 GPixel/s | 25.60 GPixel/s |
|---|---|---|
| Texturrate | 80.00 GTexel/s | 89.60 GTexel/s |
| FP32 (float) Leistung | 2.560 TFLOPS | 2.867 TFLOPS |
| FP64 (double) Leistung | 160.0 GFLOPS (1:16) | 716.8 GFLOPS (1:4) |
Boarddesign
| Steckplatzbreite | Dual-slot | Dual-slot |
|---|---|---|
| Länge | 241 mm 9.5 inches | 278 mm 10.9 inches |
| TDP | 175 W | 200 W |
| Vorgeschlagenes Netzteil | 450 W | 550 W |
| Ausgabe | 1x DVI1x HDMI2x mini-DisplayPort | 1x DVI1x HDMI2x mini-DisplayPort |
| Stromverbindung | 2x 6-pin | 2x 6-pin |
| Board-Nummer | C401-47 | C386-37 |
| Breite | — | 111 mm 4.4 inches |
| Höhe | — | 38 mm 1.5 inches |
Grafik-Features
| DirectX | 12 (11_1) | 12 (11_1) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2 | 1.2 |
| Shader-Modell | 5.1 | 5.1 |
