ATI Radeon HD 4770 vs NVIDIA GRID K220Q
Graphics Processor
| GPU model | RV740 | GK104 |
|---|---|---|
| GPU variant | RV740 XT (215-0727019) | — |
| Architecture | TeraScale | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 28 nm |
| Number of transistors | 826 million | 3,540 million |
| Die size | 137 mm² | 294 mm² |
Graphics Card
| Release date | Apr 28th, 2009 | Jul 2nd, 2014 |
|---|---|---|
| Generation | Radeon R700 | GRID |
| Production | End-of-life | End-of-life |
| Launch price | 109 USD | 469 USD |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Reviews | 82 in our database | — |
| Predecessor | Radeon R600 | — |
| Successor | Evergreen | — |
Clocks
| GPU clock | 750 MHz | 745 MHz |
|---|---|---|
| Memory clock | 800 MHz 3.2 Gbps effective | 1250 MHz 5 Gbps effective |
Memory Configuration
| Memory size | 512 MB | 512 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 51.20 GB/s | 160.0 GB/s |
Render Configuration
| Shading units | 640 | 1536 |
|---|---|---|
| TMUs | 32 | 128 |
| ROPs | 16 | 32 |
| Compute units | 8 | — |
| Cache L1 | 16 KB (per CU) | 16 KB (per SMX) |
| Cache L2 | 128 KB | 512 KB |
| SMX count | — | 8 |
Performance
| Pixel rate | 12.00 GPixel/s | 23.84 GPixel/s |
|---|---|---|
| Texture rate | 24.00 GTexel/s | 95.36 GTexel/s |
| FP32 (float) performance | 960.0 GFLOPS | 2.289 TFLOPS |
| FP64 (double) performance | 192.0 GFLOPS (1:5) | 95.36 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | Dual-slot | IGP |
|---|---|---|
| Length | 203 mm 8 inches | — |
| TDP | 80 W | 225 W |
| Suggested PSU | 250 W | 550 W |
| Outputs | 2x DVI1x S-Video | No outputs |
| Power connectors | 1x 6-pin | — |
| Board number | B743 | — |
API Support & Features
| DirectX | 10.1 (10_1) | 12 (11_0) |
|---|---|---|
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 3.0 |
| Vulkan | — | 1.1 |
| Shader model | 4.1 | 5.1 |
| CUDA | — | 3.0 |
