AMD Radeon R7 M340 vs NVIDIA GeForce GT 640M LE
Graphics Processor
| GPU model | Meso | GF108 |
|---|---|---|
| GPU variant | Meso PRO (216-0864032) | — |
| Architecture | GCN 3.0 | Fermi |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 40 nm |
| Number of transistors | 1,550 million | 585 million |
| Die size | 125 mm² | 116 mm² |
Mobile graphics
| Release date | May 5th, 2015 | May 4th, 2012 |
|---|---|---|
| Generation | Crystal System (R7 M300) | GeForce 600M |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x8 | PCIe 2.0 x16 |
| Predecessor | Solar System | GeForce 500M |
| Successor | Mobility Radeon | GeForce 700M |
| Reviews | — | 2 in our database |
Clocks
| Base clock | 943 MHz | — |
|---|---|---|
| Boost clock | 1021 MHz | — |
| Memory clock | 1000 MHz 2 Gbps effective | 785 MHz 3.1 Gbps effective |
| GPU clock | — | 753 MHz |
| Shader clock | — | 1505 MHz |
Memory Configuration
| Memory size | 2 GB | 2 GB |
|---|---|---|
| Memory type | DDR3 | GDDR5 |
| Memory bus width | 64 bit | 128 bit |
| Bandwidth | 16.00 GB/s | 50.24 GB/s |
Render Configuration
| Shading units | 320 | 96 |
|---|---|---|
| TMUs | 20 | 16 |
| ROPs | 8 | 4 |
| Compute units | 5 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SM) |
| Cache L2 | 128 KB | 256 KB |
| SM count | — | 2 |
Performance
| Pixel rate | 8.168 GPixel/s | 3.012 GPixel/s |
|---|---|---|
| Texture rate | 20.42 GTexel/s | 12.05 GTexel/s |
| FP16 (half) performance | 653.4 GFLOPS (1:1) | — |
| FP32 (float) performance | 653.4 GFLOPS | 289.0 GFLOPS |
| FP64 (double) performance | 40.84 GFLOPS (1:16) | 24.08 GFLOPS (1:12) |
Dimensions & Outputs
| TDP | unknown | 32 W |
|---|---|---|
| Outputs | No outputs | No outputs |
API Support & Features
| DirectX | 12 (12_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 1.1 |
| Vulkan | 1.2 | — |
| Shader model | 6.0 | 5.1 |
| CUDA | — | 2.1 |
