GPU model | Pitcairn | Polaris 20 |
---|---|---|
GPU variant | Pitcairn XT (215-0828047) | Polaris 20 XTX (215-0910038) |
Architecture | GCN 1.0 | GCN 4.0 |
Foundry | TSMC | GlobalFoundries |
Manufacturing process | 28 nm | 14 nm |
Number of transistors | 2,800 million | 5,700 million |
Die size | 212 mm² | 232 mm² |
Release date | Mar 5th, 2012 | Apr 18th, 2017 |
---|---|---|
Generation | Southern Islands | Polaris |
Production | End-of-life | Active |
Launch price | 349 USD | 229 USD |
Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
Reviews | 95 in our database | 52 in our database |
Predecessor | Northern Islands | Arctic Islands |
Successor | Sea Islands | Vega |
Current price | — | Amazon / Newegg |
GPU clock | 1000 MHz | — |
---|---|---|
Memory clock | 1200 MHz 4.8 Gbps effective | 2000 MHz 8 Gbps effective |
Base clock | — | 1257 MHz |
Boost clock | — | 1340 MHz |
Memory size | 2 GB | 8 GB |
---|---|---|
Memory type | GDDR5 | GDDR5 |
Memory bus width | 256 bit | 256 bit |
Bandwidth | 153.6 GB/s | 256.0 GB/s |
Shading units | 1280 | 2304 |
---|---|---|
TMUs | 80 | 144 |
ROPs | 32 | 32 |
Compute units | 20 | 36 |
Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
Cache L2 | 512 KB | 2 MB |
Pixel rate | 32.00 GPixel/s | 42.88 GPixel/s |
---|---|---|
Texture rate | 80.00 GTexel/s | 193.0 GTexel/s |
FP32 (float) performance | 2.560 TFLOPS | 6.175 TFLOPS |
FP64 (double) performance | 160.0 GFLOPS (1:16) | 385.9 GFLOPS (1:16) |
FP16 (half) performance | — | 6.175 TFLOPS (1:1) |
Slot width | Dual-slot | Dual-slot |
---|---|---|
Length | 241 mm 9.5 inches | 241 mm 9.5 inches |
TDP | 175 W | 185 W |
Suggested PSU | 450 W | 450 W |
Outputs | 1x DVI1x HDMI2x mini-DisplayPort | 1x HDMI3x DisplayPort |
Power connectors | 2x 6-pin | 1x 8-pin |
Board number | C401-47 | C940, D009-04 |
DirectX | 12 (11_1) | 12 (12_0) |
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OpenGL | 4.6 | 4.6 |
OpenCL | 1.2 | 2.1 |
Vulkan | 1.2 | 1.2 |
Shader model | 5.1 | 6.4 |