AMD Radeon HD 7870 GHz Edition vs ATI Mobility FireGL 7800
Graphics Processor
| GPU model | Pitcairn | M7 |
|---|---|---|
| GPU variant | Pitcairn XT (215-0828047) | M7-GL |
| Architecture | GCN 1.0 | Rage 7 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 150 nm |
| Number of transistors | 2,800 million | 60 million |
| Die size | 212 mm² | 68 mm² |
Graphics Card
| Release date | Mar 5th, 2012 | — |
|---|---|---|
| Generation | Southern Islands | — |
| Production | End-of-life | — |
| Launch price | 349 USD | — |
| Interface | PCIe 3.0 x16 | — |
| Reviews | 95 in our database | — |
| Predecessor | Northern Islands | — |
| Successor | Sea Islands | — |
Clocks
| GPU clock | 1000 MHz | 280 MHz |
|---|---|---|
| Memory clock | 1200 MHz 4.8 Gbps effective | 200 MHz 400 Mbps effective |
Memory Configuration
| Memory size | 2 GB | 64 MB |
|---|---|---|
| Memory type | GDDR5 | DDR |
| Memory bus width | 256 bit | 128 bit |
| Bandwidth | 153.6 GB/s | 6.400 GB/s |
Render Configuration
| Shading units | 1280 | — |
|---|---|---|
| TMUs | 80 | 2 |
| ROPs | 32 | 2 |
| Compute units | 20 | — |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 512 KB | — |
| Pixel shaders | — | 2 |
| Vertex shaders | — | 0 |
Performance
| Pixel rate | 32.00 GPixel/s | 560.0 MPixel/s |
|---|---|---|
| Texture rate | 80.00 GTexel/s | 560.0 MTexel/s |
| FP32 (float) performance | 2.560 TFLOPS | — |
| FP64 (double) performance | 160.0 GFLOPS (1:16) | — |
Dimensions & Outputs
| Slot width | Dual-slot | IGP |
|---|---|---|
| Length | 241 mm 9.5 inches | — |
| TDP | 175 W | 27 W |
| Suggested PSU | 450 W | — |
| Outputs | 1x DVI1x HDMI2x mini-DisplayPort | No outputs |
| Power connectors | 2x 6-pin | — |
| Board number | C401-47 | — |
API Support & Features
| DirectX | 12 (11_1) | 7.0 |
|---|---|---|
| OpenGL | 4.6 | 1.3 |
| OpenCL | 1.2 | — |
| Vulkan | 1.2 | — |
| Shader model | 5.1 | — |
| Pixel shader | — | — |
| Vertex shader | — | — |
Other Features
Mobile graphics
| Release date | — | Sep 29th, 2001 |
|---|---|---|
| Generation | — | Mobility FireGL |
| Production | — | End-of-life |
| Interface | — | AGP 4x |
| Reviews | — | 2 in our database |
