AMD Radeon R5 M255 vs NVIDIA GeForce 820M
Grafikprozessor
| GPU Name | Topaz | GF117 |
|---|---|---|
| GPU Variante | Topaz PRO (216-0864032) | N15V-GM-B-A2 |
| Architektur | GCN 3.0 | Fermi 2.0 |
| Hersteller | TSMC | TSMC |
| Prozessgröße | 28 nm | 28 nm |
| Transistoren | 1,550 million | 585 million |
| Chipgröße | 125 mm² | 116 mm² |
Mobile Grafik
| Veröffentlichungsdatum | Oct 12th, 2014 | Nov 27th, 2013 |
|---|---|---|
| Generation | Crystal System (R5 M200) | GeForce 800M |
| Produktion | End-of-life | End-of-life |
| Businterface | PCIe 3.0 x8 | PCIe 2.0 x16 |
| Vorgänger | Solar System | GeForce 700M |
| Nachfolger | Mobility Radeon | GeForce 900M |
Takt-Geschwindigkeiten
| Basis-Taktfrequenz | 925 MHz | — |
|---|---|---|
| Boost-Takt | 940 MHz | — |
| Speicher-Taktung | 1000 MHz 4 Gbps effective | 900 MHz 1800 Mbps effective |
| GPU-Taktung | — | 625 MHz |
| Shader-Taktung | — | 1250 MHz |
Speicher
| Speichergröße | 1024 MB | 1024 MB |
|---|---|---|
| Speichertyp | GDDR5 | DDR3 |
| Speicherbus | 128 bit | 64 bit |
| Bandbreite | 64.00 GB/s | 14.40 GB/s |
Render-Konfiguration
| Shading-Einheiten | 384 | 96 |
|---|---|---|
| TMUs | 24 | 16 |
| ROPs | 8 | 8 |
| Compute Units | 6 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SM) |
| Cache L2 | 256 KB | 128 KB |
| Anzahl SM | — | 2 |
Theoretische Leistung
| Pixelrate | 7.520 GPixel/s | 2.500 GPixel/s |
|---|---|---|
| Texturrate | 22.56 GTexel/s | 10.00 GTexel/s |
| FP16 (half) Leistung | 721.9 GFLOPS (1:1) | — |
| FP32 (float) Leistung | 721.9 GFLOPS | 240.0 GFLOPS |
| FP64 (double) Leistung | 45.12 GFLOPS (1:16) | 20.00 GFLOPS (1:12) |
Boarddesign
| TDP | unknown | 15 W |
|---|---|---|
| Ausgabe | No outputs | No outputs |
Grafik-Features
| DirectX | 12 (12_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 1.1 |
| Vulkan | 1.2 | — |
| Shader-Modell | 6.3 | 5.1 |
| CUDA | — | 2.1 |
