AMD Radeon 550X 640SP vs NVIDIA GeForce GTX 275 PhysX Edition
Graphics Processor
| GPU model | Lexa | G92B |
|---|---|---|
| GPU variant | Lexa PRO (215-0904018) | G92-421-B1 |
| Architecture | GCN 4.0 | Tesla |
| Foundry | GlobalFoundries | TSMC |
| Manufacturing process | 14 nm | 55 nm |
| Number of transistors | 2,200 million | 754 million |
| Die size | 103 mm² | 260 mm² |
Graphics Card
| Release date | Apr 11th, 2018 | Feb 16th, 2010 |
|---|---|---|
| Generation | Polaris | GeForce 200 |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x8 | PCIe 2.0 x16 |
| Predecessor | Polaris | GeForce 9 |
| Successor | Vega | GeForce 400 |
| Reviews | — | 61 in our database |
Clocks
| Base clock | 1019 MHz | — |
|---|---|---|
| Boost clock | 1071 MHz | — |
| Memory clock | 1500 MHz 6 Gbps effective | 1134 MHz 2.3 Gbps effective |
| GPU clock | — | 633 MHz |
| Shader clock | — | 1296 MHz |
Memory Configuration
| Memory size | 4 GB | 896 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR3 |
| Memory bus width | 64 bit | 448 bit |
| Bandwidth | 48.00 GB/s | 127.0 GB/s |
Render Configuration
| Shading units | 640 | 240 |
|---|---|---|
| TMUs | 40 | 80 |
| ROPs | 16 | 28 |
| Compute units | 10 | — |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 256 KB | 224 KB |
| SM count | — | 30 |
Performance
| Pixel rate | 17.14 GPixel/s | 17.72 GPixel/s |
|---|---|---|
| Texture rate | 42.84 GTexel/s | 50.64 GTexel/s |
| FP16 (half) performance | 1,371 GFLOPS (1:1) | — |
| FP32 (float) performance | 1,371 GFLOPS | 622.1 GFLOPS |
| FP64 (double) performance | 85.68 GFLOPS (1:16) | 77.76 GFLOPS (1:8) |
Dimensions & Outputs
| Slot width | IGP | Dual-slot |
|---|---|---|
| TDP | 50 W | 219 W |
| Suggested PSU | 250 W | 550 W |
| Outputs | 1x DVI1x HDMI1x DisplayPort | 2x DVI |
| Power connectors | None | 1x 6-pin + 1x 8-pin |
| Length | — | 267 mm 10.5 inches |
API Support & Features
| DirectX | 12 (12_0) | 11.1 (10_0) |
|---|---|---|
| OpenGL | 4.6 | 3.3 |
| OpenCL | 2.1 | 1.1 |
| Vulkan | 1.2 | — |
| Shader model | 6.4 | 4.0 |
| CUDA | — | 1.3 |
