AMD Radeon R9 M385X vs NVIDIA GeForce GTX 675M
Graphics Processor
| GPU model | Strato | GF114 |
|---|---|---|
| GPU variant | Strato XT | N13E-GS1-A1 |
| Architecture | GCN 2.0 | Fermi 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 40 nm |
| Number of transistors | 2,080 million | 1,950 million |
| Die size | 160 mm² | 332 mm² |
Mobile graphics
| Release date | May 5th, 2015 | Mar 22nd, 2012 |
|---|---|---|
| Generation | Crystal System (R9 M300) | GeForce 600M |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x16 | MXM-B (3.0) |
| Predecessor | Solar System | GeForce 500M |
| Successor | Mobility Radeon | GeForce 700M |
Clocks
| Base clock | 1000 MHz | — |
|---|---|---|
| Boost clock | 1100 MHz | — |
| Memory clock | 1200 MHz 4.8 Gbps effective | 750 MHz 3 Gbps effective |
| GPU clock | — | 620 MHz |
| Shader clock | — | 1240 MHz |
Memory Configuration
| Memory size | 4 GB | 2 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 76.80 GB/s | 96.00 GB/s |
Render Configuration
| Shading units | 896 | 384 |
|---|---|---|
| TMUs | 56 | 64 |
| ROPs | 16 | 32 |
| Compute units | 14 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SM) |
| Cache L2 | 256 KB | 512 KB |
| SM count | — | 8 |
Performance
| Pixel rate | 17.60 GPixel/s | 9.920 GPixel/s |
|---|---|---|
| Texture rate | 61.60 GTexel/s | 39.68 GTexel/s |
| FP32 (float) performance | 1.971 TFLOPS | 952.3 GFLOPS |
| FP64 (double) performance | 123.2 GFLOPS (1:16) | 79.36 GFLOPS (1:12) |
Dimensions & Outputs
| TDP | unknown | 100 W |
|---|---|---|
| Outputs | No outputs | No outputs |
| Slot width | — | MXM Module |
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 | 6.3 | 5.1 |
| CUDA | — | 2.1 |
