AMD Radeon HD 7850M vs ATI Mobility Radeon HD 4870
Grafikprozessor
| GPU Name | Heathrow | M98 |
|---|---|---|
| GPU Variante | Heathrow PRO | M98 XT (216-0732023) |
| Architektur | GCN 1.0 | TeraScale |
| Hersteller | TSMC | TSMC |
| Prozessgröße | 28 nm | 55 nm |
| Transistoren | 1,500 million | 956 million |
| Chipgröße | 123 mm² | 256 mm² |
Mobile Grafik
| Veröffentlichungsdatum | Apr 24th, 2012 | Jan 9th, 2009 |
|---|---|---|
| Generation | London (HD 7800M) | M9x (Mobility HD 4800) |
| Produktion | End-of-life | End-of-life |
| Businterface | PCIe 3.0 x16 | PCIe 2.0 x16 |
| Vorgänger | Vancouver | M8x |
| Nachfolger | Solar System | Manhattan |
| Reviews | — | 2 in our database |
Takt-Geschwindigkeiten
| GPU-Taktung | 675 MHz | 550 MHz |
|---|---|---|
| Speicher-Taktung | 1000 MHz 4 Gbps effective | 888 MHz 1776 Mbps effective |
Speicher
| Speichergröße | 2 GB | 512 MB |
|---|---|---|
| Speichertyp | GDDR5 | GDDR3 |
| Speicherbus | 128 bit | 256 bit |
| Bandbreite | 64.00 GB/s | 56.83 GB/s |
Render-Konfiguration
| Shading-Einheiten | 640 | 800 |
|---|---|---|
| TMUs | 40 | 40 |
| ROPs | 16 | 16 |
| Compute Units | 10 | 10 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 256 KB | 256 KB |
Theoretische Leistung
| Pixelrate | 10.80 GPixel/s | 8.800 GPixel/s |
|---|---|---|
| Texturrate | 27.00 GTexel/s | 22.00 GTexel/s |
| FP32 (float) Leistung | 864.0 GFLOPS | 880.0 GFLOPS |
| FP64 (double) Leistung | 54.00 GFLOPS (1:16) | 176.0 GFLOPS (1:5) |
Boarddesign
| TDP | 40 W | unknown |
|---|---|---|
| Ausgabe | No outputs | No outputs |
Grafik-Features
| DirectX | 12 (11_1) | 10.1 (10_1) |
|---|---|---|
| OpenGL | 4.6 | 3.3 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | 1.2 | — |
| Shader-Modell | 5.1 | 4.1 |
