AMD Radeon R9 M275 vs NVIDIA GeForce GT 745M
Graphics Processor
| GPU model | Venus | GK107 |
|---|---|---|
| GPU variant | Venus XTX | N14P-LP |
| Architecture | GCN 1.0 | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 1,500 million | 1,270 million |
| Die size | 123 mm² | 118 mm² |
Mobile graphics
| Release date | Jan 28th, 2014 | Apr 1st, 2013 |
|---|---|---|
| Generation | Crystal System (R9 M200) | GeForce 700M |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Predecessor | Solar System | GeForce 600M |
| Successor | Mobility Radeon | GeForce 800M |
Clocks
| Base clock | 900 MHz | — |
|---|---|---|
| Boost clock | 925 MHz | — |
| Memory clock | 1000 MHz 4 Gbps effective | 900 MHz 1800 Mbps effective |
| GPU clock | — | 837 MHz |
Memory Configuration
| Memory size | 2 GB | 2 GB |
|---|---|---|
| Memory type | GDDR5 | DDR3 |
| Memory bus width | 128 bit | 128 bit |
| Bandwidth | 64.00 GB/s | 28.80 GB/s |
Render Configuration
| Shading units | 640 | 384 |
|---|---|---|
| TMUs | 40 | 32 |
| ROPs | 16 | 16 |
| Compute units | 10 | — |
| Cache L1 | 16 KB (per CU) | 16 KB (per SMX) |
| Cache L2 | 256 KB | 256 KB |
| SMX count | — | 2 |
Performance
| Pixel rate | 14.80 GPixel/s | 6.696 GPixel/s |
|---|---|---|
| Texture rate | 37.00 GTexel/s | 26.78 GTexel/s |
| FP32 (float) performance | 1,184 GFLOPS | 642.8 GFLOPS |
| FP64 (double) performance | 74.00 GFLOPS (1:16) | 26.78 GFLOPS (1:24) |
Dimensions & Outputs
| TDP | unknown | 45 W |
|---|---|---|
| Outputs | No outputs | No outputs |
| Slot width | — | IGP |
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 |
