AMD Radeon HD 8950 OEM vs NVIDIA GeForce GTX 770M
Graphics Processor
| GPU model | Tahiti | GK106 |
|---|---|---|
| GPU variant | Tahiti PRO (215-0821056) | N14E-GS-A1 |
| Architecture | GCN 1.0 | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 4,313 million | 2,540 million |
| Die size | 352 mm² | 221 mm² |
Graphics Card
| Release date | Jan 8th, 2013 | — |
|---|---|---|
| Generation | Sea Islands | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x16 | — |
| Predecessor | Southern Islands | — |
| Successor | Volcanic Islands | — |
Clocks
| Base clock | 850 MHz | 706 MHz |
|---|---|---|
| Boost clock | 925 MHz | 797 MHz |
| Memory clock | 1250 MHz 5 Gbps effective | 1002 MHz 4 Gbps effective |
Memory Configuration
| Memory size | 3 GB | 3 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 384 bit | 192 bit |
| Bandwidth | 240.0 GB/s | 96.19 GB/s |
Render Configuration
| Shading units | 1792 | 960 |
|---|---|---|
| TMUs | 112 | 80 |
| ROPs | 32 | 24 |
| Compute units | 28 | — |
| Cache L1 | 16 KB (per CU) | 16 KB (per SMX) |
| Cache L2 | 768 KB | 384 KB |
| SMX count | — | 5 |
Performance
| Pixel rate | 29.60 GPixel/s | 15.94 GPixel/s |
|---|---|---|
| Texture rate | 103.6 GTexel/s | 63.76 GTexel/s |
| FP32 (float) performance | 3.315 TFLOPS | 1.530 TFLOPS |
| FP64 (double) performance | 828.8 GFLOPS (1:4) | 63.76 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | Dual-slot | MXM Module |
|---|---|---|
| Length | 267 mm 10.5 inches | — |
| TDP | 200 W | 75 W |
| Suggested PSU | 550 W | — |
| Outputs | 1x DVI1x HDMI2x mini-DisplayPort | No outputs |
| Power connectors | 2x 6-pin | None |
| Board number | C386-42 | P2303 |
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 |
Other Features
Mobile graphics
| Release date | — | May 30th, 2013 |
|---|---|---|
| Generation | — | GeForce 700M |
| Production | — | End-of-life |
| Interface | — | MXM-B (3.0) |
| Predecessor | — | GeForce 600M |
| Successor | — | GeForce 800M |
