ATI Radeon HD 3870 vs ATI Radeon HD 4870 X2
Grafikprozessor
| GPU Name | RV670 | R700 |
|---|---|---|
| GPU Variante | RV670 XT (215-0708005) | R700 XT (215-0669045) |
| Architektur | TeraScale | TeraScale |
| Hersteller | TSMC | TSMC |
| Prozessgröße | 55 nm | 55 nm |
| Transistoren | 666 million | 956 million |
| Chipgröße | 192 mm² | 256 mm² |
Grafikkarte
| Veröffentlichungsdatum | Nov 19th, 2007 | Aug 12th, 2008 |
|---|---|---|
| Generation | Radeon R600 | Radeon R700 |
| Produktion | End-of-life | End-of-life |
| Originalpreis | 269 USD | 550 USD |
| Businterface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Reviews | 80 in our database | 79 in our database |
| Vorgänger | Radeon R500 PCIe | Radeon R600 |
| Nachfolger | Radeon R700 | Evergreen |
Takt-Geschwindigkeiten
| GPU-Taktung | 777 MHz | 750 MHz |
|---|---|---|
| Speicher-Taktung | 1126 MHz 2.3 Gbps effective | 900 MHz 3.6 Gbps effective |
Speicher
| Speichergröße | 512 MB | 1024 MB |
|---|---|---|
| Speichertyp | GDDR4 | GDDR5 |
| Speicherbus | 256 bit | 256 bit |
| Bandbreite | 72.06 GB/s | 115.2 GB/s |
Render-Konfiguration
| Shading-Einheiten | 320 | 800 |
|---|---|---|
| TMUs | 16 | 40 |
| ROPs | 16 | 16 |
| Compute Units | 4 | 10 |
| Cache L2 | 256 KB | 256 KB |
| Cache L1 | — | 16 KB (per CU) |
Theoretische Leistung
| Pixelrate | 12.43 GPixel/s | 12.00 GPixel/s |
|---|---|---|
| Texturrate | 12.43 GTexel/s | 30.00 GTexel/s |
| FP32 (float) Leistung | 497.3 GFLOPS | 1,200 GFLOPS |
| FP64 (double) Leistung | 99.46 GFLOPS (1:5) | 240.0 GFLOPS (1:5) |
Boarddesign
| Steckplatzbreite | Dual-slot | Dual-slot |
|---|---|---|
| Länge | 241 mm 9.5 inches | 267 mm 10.5 inches |
| TDP | 106 W | 286 W |
| Vorgeschlagenes Netzteil | 300 W | 600 W |
| Ausgabe | 2x DVI1x S-Video | 2x DVI1x S-Video |
| Stromverbindung | 1x 6-pin | 1x 6-pin + 1x 8-pin |
| Board-Nummer | B339 | B509-37 |
| Breite | — | 111 mm 4.4 inches |
| Höhe | — | 38 mm 1.5 inches |
Grafik-Features
| DirectX | 10.1 (10_1) | 10.1 (10_1) |
|---|---|---|
| OpenGL | 3.3 (full) 4.0 (partial) | 3.3 |
| OpenCL | — | 1.1 |
| Vulkan | — | — |
| Shader-Modell | 4.1 | 4.1 |
