AMD Radeon HD 6870 vs AMD Radeon HD 8950 OEM
Grafikprozessor
| GPU Name | Barts | Tahiti |
|---|---|---|
| GPU Variante | Barts XT (215-0798000) | Tahiti PRO (215-0821056) |
| Architektur | TeraScale 2 | GCN 1.0 |
| Hersteller | TSMC | TSMC |
| Prozessgröße | 40 nm | 28 nm |
| Transistoren | 1,700 million | 4,313 million |
| Chipgröße | 255 mm² | 352 mm² |
Grafikkarte
| Veröffentlichungsdatum | Oct 21st, 2010 | Jan 8th, 2013 |
|---|---|---|
| Generation | Northern Islands | Sea Islands |
| Produktion | End-of-life | End-of-life |
| Originalpreis | 239 USD | — |
| Businterface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Reviews | 170 in our database | — |
| Vorgänger | Evergreen | Southern Islands |
| Nachfolger | Southern Islands | Volcanic Islands |
Takt-Geschwindigkeiten
| GPU-Taktung | 900 MHz | — |
|---|---|---|
| Speicher-Taktung | 1050 MHz 4.2 Gbps effective | 1250 MHz 5 Gbps effective |
| Basis-Taktfrequenz | — | 850 MHz |
| Boost-Takt | — | 925 MHz |
Speicher
| Speichergröße | 1024 MB | 3 GB |
|---|---|---|
| Speichertyp | GDDR5 | GDDR5 |
| Speicherbus | 256 bit | 384 bit |
| Bandbreite | 134.4 GB/s | 240.0 GB/s |
Render-Konfiguration
| Shading-Einheiten | 1120 | 1792 |
|---|---|---|
| TMUs | 56 | 112 |
| ROPs | 32 | 32 |
| Compute Units | 14 | 28 |
| Cache L1 | 8 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 512 KB | 768 KB |
Theoretische Leistung
| Pixelrate | 28.80 GPixel/s | 29.60 GPixel/s |
|---|---|---|
| Texturrate | 50.40 GTexel/s | 103.6 GTexel/s |
| FP32 (float) Leistung | 2.016 TFLOPS | 3.315 TFLOPS |
| FP64 (double) Leistung | — | 828.8 GFLOPS (1:4) |
Boarddesign
| Steckplatzbreite | Dual-slot | Dual-slot |
|---|---|---|
| Länge | 247 mm 9.7 inches | 267 mm 10.5 inches |
| Breite | 111 mm 4.4 inches | — |
| Höhe | 36 mm 1.4 inches | — |
| TDP | 151 W | 200 W |
| Vorgeschlagenes Netzteil | 450 W | 550 W |
| Ausgabe | 2x DVI1x HDMI2x mini-DisplayPort | 1x DVI1x HDMI2x mini-DisplayPort |
| Stromverbindung | 2x 6-pin | 2x 6-pin |
| Board-Nummer | C222 | C386-42 |
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 |
