Intel Iris Pro Graphics P555 vs NVIDIA GeForce GTX 645 OEM
Graphics Processor
| GPU model | Skylake GT3e | GK106 |
|---|---|---|
| Architecture | Generation 9.0 | Kepler |
| Foundry | Intel | TSMC |
| Manufacturing process | 14 nm+ | 28 nm |
| Number of transistors | unknown | 2,540 million |
| Die size | unknown | 221 mm² |
| GPU variant | — | GK106-200-A1 |
Integrated Graphics
| Release date | Sep 1st, 2015 | — |
|---|---|---|
| Generation | HD Graphics-W (Skylake) | — |
| Production | Active | — |
| Interface | Ring Bus | — |
| Reviews | 1 in our database | — |
Clocks
| Base clock | 350 MHz | — |
|---|---|---|
| Boost clock | 1000 MHz | — |
| Memory clock | System Shared | 1000 MHz 4 Gbps effective |
| GPU clock | — | 824 MHz |
Memory Configuration
| Memory size | System Shared | 1024 MB |
|---|---|---|
| Memory type | System Shared | GDDR5 |
| Memory bus width | System Shared | 128 bit |
| Bandwidth | System Dependent | 64.00 GB/s |
Render Configuration
| Shading units | 384 | 576 |
|---|---|---|
| TMUs | 48 | 48 |
| ROPs | 6 | 16 |
| Execution units | 48 | — |
| SMX count | — | 3 |
| Cache L1 | — | 16 KB (per SMX) |
| Cache L2 | — | 256 KB |
Performance
| Pixel rate | 6.000 GPixel/s | 9.888 GPixel/s |
|---|---|---|
| Texture rate | 48.00 GTexel/s | 39.55 GTexel/s |
| FP16 (half) performance | 1.536 TFLOPS (2:1) | — |
| FP32 (float) performance | 768.0 GFLOPS | 949.2 GFLOPS |
| FP64 (double) performance | 192.0 GFLOPS (1:4) | 39.55 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | IGP | Single-slot |
|---|---|---|
| TDP | 15 W | 65 W |
| Outputs | No outputs | 1x DVI1x HDMI1x DisplayPort |
| Length | — | 147 mm 5.8 inches |
| Suggested PSU | — | 250 W |
| Power connectors | — | None |
| Board number | — | P2010 SKU 20 |
API Support & Features
| DirectX | 12 (12_1) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 3.0 |
| Vulkan | 1.2 | 1.1 |
| Shader model | 6.4 | 5.1 |
| CUDA | — | 3.0 |
Other Features
Graphics Card
| Release date | — | Apr 22nd, 2013 |
|---|---|---|
| Generation | — | GeForce 600 |
| Production | — | End-of-life |
| Interface | — | PCIe 3.0 x16 |
| Predecessor | — | GeForce 500 |
| Successor | — | GeForce 700 |
