AMD Radeon HD 8950 OEM vs NVIDIA GRID K280Q
Graphics Processor
| GPU model | Tahiti | GK104 |
|---|---|---|
| GPU variant | Tahiti PRO (215-0821056) | — |
| Architecture | GCN 1.0 | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 4,313 million | 3,540 million |
| Die size | 352 mm² | 294 mm² |
Graphics Card
| Release date | Jan 8th, 2013 | Jun 28th, 2013 |
|---|---|---|
| Generation | Sea Islands | GRID |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Predecessor | Southern Islands | — |
| Successor | Volcanic Islands | — |
| Launch price | — | 1,875 USD |
Clocks
| Base clock | 850 MHz | — |
|---|---|---|
| Boost clock | 925 MHz | — |
| Memory clock | 1250 MHz 5 Gbps effective | 1250 MHz 5 Gbps effective |
| GPU clock | — | 745 MHz |
Memory Configuration
| Memory size | 3 GB | 4 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 384 bit | 256 bit |
| Bandwidth | 240.0 GB/s | 160.0 GB/s |
Render Configuration
| Shading units | 1792 | 1536 |
|---|---|---|
| TMUs | 112 | 128 |
| ROPs | 32 | 32 |
| Compute units | 28 | — |
| Cache L1 | 16 KB (per CU) | 16 KB (per SMX) |
| Cache L2 | 768 KB | 512 KB |
| SMX count | — | 8 |
Performance
| Pixel rate | 29.60 GPixel/s | 23.84 GPixel/s |
|---|---|---|
| Texture rate | 103.6 GTexel/s | 95.36 GTexel/s |
| FP32 (float) performance | 3.315 TFLOPS | 2.289 TFLOPS |
| FP64 (double) performance | 828.8 GFLOPS (1:4) | 95.36 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | Dual-slot | IGP |
|---|---|---|
| Length | 267 mm 10.5 inches | — |
| TDP | 200 W | 225 W |
| Suggested PSU | 550 W | 550 W |
| Outputs | 1x DVI1x HDMI2x mini-DisplayPort | No outputs |
| Power connectors | 2x 6-pin | — |
| Board number | C386-42 | — |
API Support & Features
| DirectX | 12 (11_1) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 3.0 |
| Vulkan | 1.2 | 1.1 |
| Shader model | 5.1 | 5.1 |
| CUDA | — | 3.0 |
