NVIDIA GeForce GTX 950 vs NVIDIA GeForce GTX 980
Graphics Processor
| GPU model | GM206 | GM204 |
|---|---|---|
| GPU variant | GM206-250-A1 | GM204-400-A1 |
| Architecture | Maxwell 2.0 | Maxwell 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 2,940 million | 5,200 million |
| Die size | 228 mm² | 398 mm² |
Graphics Card
| Release date | Aug 20th, 2015 | Sep 19th, 2014 |
|---|---|---|
| Generation | GeForce 900 | GeForce 900 |
| Production | End-of-life | End-of-life |
| Launch price | 159 USD | 549 USD |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Reviews | 76 in our database | 146 in our database |
| Predecessor | GeForce 700 | GeForce 700 |
| Successor | GeForce 10 | GeForce 10 |
Clocks
| Base clock | 1024 MHz | 1127 MHz |
|---|---|---|
| Boost clock | 1188 MHz | 1216 MHz |
| Memory clock | 1653 MHz 6.6 Gbps effective | 1753 MHz 7 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 4 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 105.8 GB/s | 224.4 GB/s |
Render Configuration
| Shading units | 768 | 2048 |
|---|---|---|
| TMUs | 48 | 128 |
| ROPs | 32 | 64 |
| SMM count | 6 | 16 |
| Cache L1 | 48 KB (per SMM) | 48 KB (per SMM) |
| Cache L2 | 1024 KB | 2 MB |
Performance
| Pixel rate | 38.02 GPixel/s | 77.82 GPixel/s |
|---|---|---|
| Texture rate | 57.02 GTexel/s | 155.6 GTexel/s |
| FP32 (float) performance | 1.825 TFLOPS | 4.981 TFLOPS |
| FP64 (double) performance | 57.02 GFLOPS (1:32) | 155.6 GFLOPS (1:32) |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 202 mm 8 inches | 267 mm 10.5 inches |
| TDP | 90 W | 165 W |
| Suggested PSU | 250 W | 450 W |
| Outputs | 1x DVI1x HDMI3x DisplayPort | 1x DVI1x HDMI3x DisplayPort |
| Power connectors | 1x 6-pin | 2x 6-pin |
| Width | — | 111 mm 4.4 inches |
| Height | — | 40 mm 1.6 inches |
| Board number | — | PG401 |
API Support & Features
| DirectX | 12 (12_1) | 12 (12_1) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 3.0 |
| Vulkan | 1.1 | 1.1 |
| CUDA | 5.2 | 5.2 |
| Shader model | 6.4 | 6.4 |
