GPU model | Topaz | Redwood |
---|---|---|
GPU variant | Topaz XT (216-0864030) | Redwood XT (215-0757002) |
Architecture | GCN 3.0 | TeraScale 2 |
Foundry | TSMC | TSMC |
Manufacturing process | 28 nm | 40 nm |
Number of transistors | 1,550 million | 627 million |
Die size | 125 mm² | 104 mm² |
Release date | Jun 11th, 2014 | — |
---|---|---|
Generation | Crystal System (R7 M200) | — |
Production | End-of-life | — |
Interface | PCIe 3.0 x8 | — |
Predecessor | Solar System | — |
Successor | Mobility Radeon | — |
Base clock | 940 MHz | — |
---|---|---|
Boost clock | 980 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 | 64 bit | 128 bit |
Bandwidth | 14.40 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 | 128 KB | 256 KB |
Pixel rate | 7.840 GPixel/s | 6.200 GPixel/s |
---|---|---|
Texture rate | 23.52 GTexel/s | 15.50 GTexel/s |
FP16 (half) performance | 752.6 GFLOPS (1:1) | — |
FP32 (float) performance | 752.6 GFLOPS | 620.0 GFLOPS |
FP64 (double) performance | 47.04 GFLOPS (1:16) | — |
TDP | unknown | 64 W |
---|---|---|
Outputs | No outputs | 1x DVI1x HDMI1x VGA |
Board number | C720 | — |
Slot width | — | Single-slot |
Length | — | 168 mm 6.6 inches |
Suggested PSU | — | 250 W |
DirectX | 12 (12_0) | 11.2 (11_0) |
---|---|---|
OpenGL | 4.6 | 4.4 |
OpenCL | 2.0 | 1.2 |
Vulkan | 1.2 | — |
Shader model | 6.3 | 5.0 |
Release date | — | Feb 26th, 2011 |
---|---|---|
Generation | — | Evergreen |
Production | — | End-of-life |
Interface | — | PCIe 2.0 x16 |
Predecessor | — | Radeon R700 |
Successor | — | Northern Islands |