AMD Radeon HD 8950 OEM vs NVIDIA GeForce GTX 560 Ti X2
Graphics Processor
| GPU model | Tahiti | GF114 |
|---|---|---|
| GPU variant | Tahiti PRO (215-0821056) | GF114-400-A1 |
| Architecture | GCN 1.0 | Fermi 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 40 nm |
| Number of transistors | 4,313 million | 1,950 million |
| Die size | 352 mm² | 332 mm² |
Graphics Card
| Release date | Jan 8th, 2013 | Jan 25th, 2011 |
|---|---|---|
| Generation | Sea Islands | GeForce 500 |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x16 | PCIe 2.0 x16 |
| Predecessor | Southern Islands | GeForce 400 |
| Successor | Volcanic Islands | GeForce 600 |
| Reviews | — | 122 in our database |
Clocks
| Base clock | 850 MHz | — |
|---|---|---|
| Boost clock | 925 MHz | — |
| Memory clock | 1250 MHz 5 Gbps effective | 1002 MHz 4 Gbps effective |
| GPU clock | — | 850 MHz |
| Shader clock | — | 1700 MHz |
Memory Configuration
| Memory size | 3 GB | 1024 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 384 bit | 256 bit |
| Bandwidth | 240.0 GB/s | 128.3 GB/s |
Render Configuration
| Shading units | 1792 | 384 |
|---|---|---|
| TMUs | 112 | 64 |
| ROPs | 32 | 32 |
| Compute units | 28 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SM) |
| Cache L2 | 768 KB | 512 KB |
| SM count | — | 8 |
Performance
| Pixel rate | 29.60 GPixel/s | 13.60 GPixel/s |
|---|---|---|
| Texture rate | 103.6 GTexel/s | 54.40 GTexel/s |
| FP32 (float) performance | 3.315 TFLOPS | 1,306 GFLOPS |
| FP64 (double) performance | 828.8 GFLOPS (1:4) | 108.8 GFLOPS (1:12) |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 267 mm 10.5 inches | 292 mm 11.5 inches |
| TDP | 200 W | 170 W |
| Suggested PSU | 550 W | 450 W |
| Outputs | 1x DVI1x HDMI2x mini-DisplayPort | 3x DVI1x mini-HDMI |
| Power connectors | 2x 6-pin | 2x 8-pin |
| Board number | C386-42 | P1040 |
API Support & Features
| DirectX | 12 (11_1) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | 1.2 | — |
| Shader model | 5.1 | 5.1 |
| CUDA | — | 2.1 |
