GPU model | Chelsea | Mars |
---|---|---|
GPU variant | Chelsea LE (216-0834065) | Mars LE |
Architecture | GCN 1.0 | GCN 1.0 |
Foundry | TSMC | TSMC |
Manufacturing process | 28 nm | 28 nm |
Number of transistors | 1,500 million | 950 million |
Die size | 123 mm² | 77 mm² |
Release date | Apr 24th, 2012 | Apr 1st, 2013 |
---|---|---|
Generation | London (HD 7700M) | Solar System (HD 8700M) |
Production | End-of-life | End-of-life |
Interface | PCIe 2.0 x16 | PCIe 3.0 x8 |
Predecessor | Vancouver | London |
Successor | Solar System | Crystal System |
Base clock | 575 MHz | 650 MHz |
---|---|---|
Boost clock | 675 MHz | 700 MHz |
Memory clock | 900 MHz 1800 Mbps effective | 900 MHz 1800 Mbps effective |
Memory size | 2 GB | 2 GB |
---|---|---|
Memory type | DDR3 | DDR3 |
Memory bus width | 128 bit | 128 bit |
Bandwidth | 28.80 GB/s | 28.80 GB/s |
Shading units | 512 | 384 |
---|---|---|
TMUs | 32 | 24 |
ROPs | 16 | 8 |
Compute units | 8 | 6 |
Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
Cache L2 | 256 KB | 256 KB |
Pixel rate | 10.80 GPixel/s | 5.600 GPixel/s |
---|---|---|
Texture rate | 21.60 GTexel/s | 16.80 GTexel/s |
FP32 (float) performance | 691.2 GFLOPS | 537.6 GFLOPS |
FP64 (double) performance | 43.20 GFLOPS (1:16) | 33.60 GFLOPS (1:16) |
TDP | 25 W | unknown |
---|---|---|
Outputs | No outputs | No outputs |
DirectX | 12 (11_1) | 12 (11_1) |
---|---|---|
OpenGL | 4.6 | 4.6 |
OpenCL | 1.2 | 1.2 |
Vulkan | 1.2 | 1.2 |
Shader model | 5.1 | 5.1 |