GPU model | Mars | Redwood |
---|---|---|
GPU variant | Mars LE | Redwood XT (215-0757002) |
Architecture | GCN 1.0 | TeraScale 2 |
Foundry | TSMC | TSMC |
Manufacturing process | 28 nm | 40 nm |
Number of transistors | 950 million | 627 million |
Die size | 77 mm² | 104 mm² |
Release date | Apr 1st, 2013 | — |
---|---|---|
Generation | Solar System (HD 8700M) | — |
Production | End-of-life | — |
Interface | PCIe 3.0 x8 | — |
Predecessor | London | — |
Successor | Crystal System | — |
Base clock | 650 MHz | — |
---|---|---|
Boost clock | 700 MHz | — |
Memory clock | 900 MHz 1800 Mbps effective | 1000 MHz 4 Gbps effective |
GPU clock | — | 775 MHz |
Memory size | 2 GB | 1024 MB |
---|---|---|
Memory type | DDR3 | GDDR5 |
Memory bus width | 128 bit | 128 bit |
Bandwidth | 28.80 GB/s | 64.00 GB/s |
Shading units | 384 | 400 |
---|---|---|
TMUs | 24 | 20 |
ROPs | 8 | 8 |
Compute units | 6 | 5 |
Cache L1 | 16 KB (per CU) | 8 KB (per CU) |
Cache L2 | 256 KB | 256 KB |
Pixel rate | 5.600 GPixel/s | 6.200 GPixel/s |
---|---|---|
Texture rate | 16.80 GTexel/s | 15.50 GTexel/s |
FP32 (float) performance | 537.6 GFLOPS | 620.0 GFLOPS |
FP64 (double) performance | 33.60 GFLOPS (1:16) | — |
TDP | unknown | 64 W |
---|---|---|
Outputs | No outputs | 1x DVI1x HDMI1x VGA |
Slot width | — | Single-slot |
Length | — | 168 mm 6.6 inches |
Width | — | 111 mm 4.4 inches |
Height | — | 20 mm 0.8 inches |
Suggested PSU | — | 250 W |
Power connectors | — | None |
Board number | — | C020 |
DirectX | 12 (11_1) | 11.2 (11_0) |
---|---|---|
OpenGL | 4.6 | 4.4 |
OpenCL | 1.2 | 1.2 |
Vulkan | 1.2 | — |
Shader model | 5.1 | 5.0 |
Release date | — | Jan 14th, 2010 |
---|---|---|
Generation | — | Evergreen |
Production | — | End-of-life |
Launch price | — | 119 USD |
Interface | — | PCIe 2.0 x16 |
Reviews | — | 83 in our database |
Predecessor | — | Radeon R700 |
Successor | — | Northern Islands |