Intel Iris Plus Graphics 645 vs NVIDIA GeForce GTX 660M Mac Edition
Graphics Processor
| GPU model | Coffee Lake GT3e | GK107 |
|---|---|---|
| Architecture | Generation 9.5 | Kepler |
| Foundry | Intel | TSMC |
| Manufacturing process | 14 nm+++ | 28 nm |
| Number of transistors | unknown | 1,270 million |
| Die size | unknown | 118 mm² |
Integrated Graphics
| Release date | Oct 7th, 2019 | — |
|---|---|---|
| Generation | HD Graphics-M (Coffee Lake) | — |
| Production | Active | — |
| Interface | Ring Bus | — |
| Reviews | 1 in our database | — |
Clocks
| Base clock | 300 MHz | — |
|---|---|---|
| Boost clock | 1050 MHz | — |
| Memory clock | System Shared | 1250 MHz 5 Gbps effective |
| GPU clock | — | 950 MHz |
Memory Configuration
| Memory size | System Shared | 512 MB |
|---|---|---|
| Memory type | System Shared | GDDR5 |
| Memory bus width | System Shared | 128 bit |
| Bandwidth | System Dependent | 80.00 GB/s |
Render Configuration
| Shading units | 384 | 384 |
|---|---|---|
| TMUs | 48 | 32 |
| ROPs | 6 | 16 |
| Execution units | 48 | — |
| SMX count | — | 2 |
| Cache L1 | — | 16 KB (per SMX) |
| Cache L2 | — | 256 KB |
Performance
| Pixel rate | 6.300 GPixel/s | 7.600 GPixel/s |
|---|---|---|
| Texture rate | 50.40 GTexel/s | 30.40 GTexel/s |
| FP16 (half) performance | 1.613 TFLOPS (2:1) | — |
| FP32 (float) performance | 806.4 GFLOPS | 729.6 GFLOPS |
| FP64 (double) performance | 201.6 GFLOPS (1:4) | 30.40 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | IGP | MXM Module |
|---|---|---|
| TDP | 15 W | 50 W |
| Outputs | No outputs | No outputs |
| Power connectors | — | None |
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
Mobile graphics
| Release date | — | Apr 1st, 2013 |
|---|---|---|
| Generation | — | GeForce 600M |
| Production | — | End-of-life |
| Interface | — | MXM-B (3.0) |
| Predecessor | — | GeForce 500M |
| Successor | — | GeForce 700M |
