AMD Radeon HD 6650M vs NVIDIA GeForce GTX 850A
Graphics Processor
| GPU model | Whistler | GM107 |
|---|---|---|
| GPU variant | Whistler LE | N15P-GT-A1 |
| Architecture | TeraScale 2 | Maxwell |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 28 nm |
| Number of transistors | 716 million | 1,870 million |
| Die size | 104 mm² | 148 mm² |
Mobile graphics
| Release date | Jan 4th, 2011 | Mar 17th, 2014 |
|---|---|---|
| Generation | Vancouver (HD 6600M) | GeForce 800A |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Predecessor | Manhattan | GeForce 700A |
| Successor | London | GeForce 900A |
Clocks
| GPU clock | 600 MHz | — |
|---|---|---|
| Memory clock | 800 MHz 1600 Mbps effective | 900 MHz 1800 Mbps effective |
| Base clock | — | 902 MHz |
| Boost clock | — | 936 MHz |
Memory Configuration
| Memory size | 1024 MB | 2 GB |
|---|---|---|
| Memory type | DDR3 | DDR3 |
| Memory bus width | 128 bit | 128 bit |
| Bandwidth | 25.60 GB/s | 28.80 GB/s |
Render Configuration
| Shading units | 480 | 640 |
|---|---|---|
| TMUs | 24 | 40 |
| ROPs | 8 | 16 |
| Compute units | 6 | — |
| Cache L1 | 8 KB (per CU) | 64 KB (per SMM) |
| Cache L2 | 256 KB | 2 MB |
| SMM count | — | 5 |
Performance
| Pixel rate | 4.800 GPixel/s | 14.98 GPixel/s |
|---|---|---|
| Texture rate | 14.40 GTexel/s | 37.44 GTexel/s |
| FP32 (float) performance | 576.0 GFLOPS | 1,198 GFLOPS |
| FP64 (double) performance | — | 37.44 GFLOPS (1:32) |
Dimensions & Outputs
| TDP | unknown | 45 W |
|---|---|---|
| Outputs | No outputs | No outputs |
| Slot width | — | IGP |
API Support & Features
| DirectX | 11.2 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 3.0 |
| Vulkan | — | 1.1 |
| Shader model | 5.0 | 5.1 |
| CUDA | — | 5.0 |
