AMD Radeon HD 6770 vs AMD Radeon HD 7970
Grafikprozessor
| GPU Name | Juniper | Tahiti |
|---|---|---|
| GPU Variante | Juniper XT (215-0754013) | Tahiti XT (215-0821060) |
| Architektur | TeraScale 2 | GCN 1.0 |
| Hersteller | TSMC | TSMC |
| Prozessgröße | 40 nm | 28 nm |
| Transistoren | 1,040 million | 4,313 million |
| Chipgröße | 166 mm² | 352 mm² |
Grafikkarte
| Veröffentlichungsdatum | Jan 21st, 2011 | Dec 22nd, 2011 |
|---|---|---|
| Generation | Northern Islands | Southern Islands |
| Produktion | End-of-life | End-of-life |
| Originalpreis | 129 USD | 549 USD |
| Businterface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Reviews | 35 in our database | 191 in our database |
| Vorgänger | Evergreen | Northern Islands |
| Nachfolger | Southern Islands | Sea Islands |
| gpu.details.availability | — | Jan 9th, 2012 |
Takt-Geschwindigkeiten
| GPU-Taktung | 850 MHz | 925 MHz |
|---|---|---|
| Speicher-Taktung | 1200 MHz 4.8 Gbps effective | 1375 MHz 5.5 Gbps effective |
Speicher
| Speichergröße | 1024 MB | 3 GB |
|---|---|---|
| Speichertyp | GDDR5 | GDDR5 |
| Speicherbus | 128 bit | 384 bit |
| Bandbreite | 76.80 GB/s | 264.0 GB/s |
Render-Konfiguration
| Shading-Einheiten | 800 | 2048 |
|---|---|---|
| TMUs | 40 | 128 |
| ROPs | 16 | 32 |
| Compute Units | 10 | 32 |
| Cache L1 | 8 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 256 KB | 768 KB |
Theoretische Leistung
| Pixelrate | 13.60 GPixel/s | 29.60 GPixel/s |
|---|---|---|
| Texturrate | 34.00 GTexel/s | 118.4 GTexel/s |
| FP32 (float) Leistung | 1,360 GFLOPS | 3.789 TFLOPS |
| FP64 (double) Leistung | — | 947.2 GFLOPS (1:4) |
Boarddesign
| Steckplatzbreite | Dual-slot | Dual-slot |
|---|---|---|
| Länge | 198 mm 7.8 inches | 275 mm 10.8 inches |
| TDP | 108 W | 250 W |
| Vorgeschlagenes Netzteil | 300 W | 600 W |
| Ausgabe | 2x DVI1x HDMI2x mini-DisplayPort | 1x DVI1x HDMI2x mini-DisplayPort |
| Stromverbindung | 1x 6-pin | 1x 6-pin + 1x 8-pin |
| Board-Nummer | C010 | C386-37 |
| Breite | — | 111 mm 4.4 inches |
| Höhe | — | 38 mm 1.5 inches |
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 |
