NVIDIA GRID K520Q vs NVIDIA Tesla S870
Graphics Processor
| GPU model | GK104 | G80 |
|---|---|---|
| Architecture | Kepler | Tesla |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 90 nm |
| Number of transistors | 3,540 million | 681 million |
| Die size | 294 mm² | 484 mm² |
Graphics Card
| Release date | Jul 2nd, 2014 | May 2nd, 2007 |
|---|---|---|
| Generation | GRID | Tesla |
| Production | End-of-life | End-of-life |
| Launch price | 3,599 USD | 11,999 USD |
| Interface | PCIe 3.0 x16 | PCIe 1.0 x16 |
Clocks
| GPU clock | 745 MHz | 600 MHz |
|---|---|---|
| Memory clock | 1250 MHz 5 Gbps effective | 800 MHz 1600 Mbps effective |
| Shader clock | — | 1350 MHz |
Memory Configuration
| Memory size | 4 GB | 1536 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR3 |
| Memory bus width | 256 bit | 384 bit |
| Bandwidth | 160.0 GB/s | 76.80 GB/s |
Render Configuration
| Shading units | 1536 | 128 |
|---|---|---|
| TMUs | 128 | 32 |
| ROPs | 32 | 24 |
| SMX count | 8 | — |
| Cache L1 | 16 KB (per SMX) | — |
| Cache L2 | 512 KB | 96 KB |
| SM count | — | 16 |
Performance
| Pixel rate | 23.84 GPixel/s | 14.40 GPixel/s |
|---|---|---|
| Texture rate | 95.36 GTexel/s | 38.40 GTexel/s |
| FP32 (float) performance | 2.289 TFLOPS | 345.6 GFLOPS |
| FP64 (double) performance | 95.36 GFLOPS (1:24) | — |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 267 mm 10.5 inches | — |
| TDP | 225 W | 800 W |
| Suggested PSU | 550 W | 1200 W |
| Outputs | No outputs | No outputs |
API Support & Features
| DirectX | 12 (11_0) | 11.1 (10_0) |
|---|---|---|
| OpenGL | 4.6 | 3.3 |
| OpenCL | 3.0 | 1.1 (1.0) |
| Vulkan | 1.1 | — |
| CUDA | 3.0 | 1.0 |
| Shader model | 5.1 | 4.0 |
