GPU model | Polaris 21 | GM204 |
---|---|---|
GPU variant | Polaris 21 XT (215-0908004) | GM204-995-A1 |
Architecture | GCN 4.0 | Maxwell 2.0 |
Foundry | GlobalFoundries | TSMC |
Manufacturing process | 14 nm | 28 nm |
Number of transistors | 3,000 million | 5,200 million |
Die size | 123 mm² | 398 mm² |
Release date | Apr 18th, 2017 | Aug 30th, 2015 |
---|---|---|
Generation | Polaris | GRID |
Production | Active | End-of-life |
Launch price | 99 USD | — |
Interface | PCIe 3.0 x8 | PCIe 3.0 x16 |
Predecessor | Arctic Islands | — |
Successor | Vega | — |
Base clock | 1175 MHz | — |
---|---|---|
Boost clock | 1275 MHz | — |
Memory clock | 1750 MHz 7 Gbps effective | 1253 MHz 5 Gbps effective |
GPU clock | — | 722 MHz |
Memory size | 4 GB | 8 GB |
---|---|---|
Memory type | GDDR5 | GDDR5 |
Memory bus width | 128 bit | 256 bit |
Bandwidth | 112.0 GB/s | 160.4 GB/s |
Shading units | 1024 | 1536 |
---|---|---|
TMUs | 64 | 96 |
ROPs | 16 | 64 |
Compute units | 16 | — |
Cache L1 | 16 KB (per CU) | 48 KB (per SMM) |
Cache L2 | 1024 KB | 2 MB |
SMM count | — | 12 |
Pixel rate | 20.40 GPixel/s | 46.21 GPixel/s |
---|---|---|
Texture rate | 81.60 GTexel/s | 69.31 GTexel/s |
FP16 (half) performance | 2.611 TFLOPS (1:1) | — |
FP32 (float) performance | 2.611 TFLOPS | 2.218 TFLOPS |
FP64 (double) performance | 163.2 GFLOPS (1:16) | 69.31 GFLOPS (1:32) |
Slot width | Dual-slot | MXM Module |
---|---|---|
Length | 170 mm 6.7 inches | — |
TDP | 75 W | 100 W |
Suggested PSU | 250 W | 300 W |
Outputs | 1x DVI1x HDMI1x DisplayPort | No outputs |
Power connectors | None | None |
Board number | C994 | — |
DirectX | 12 (12_0) | 12 (12_1) |
---|---|---|
OpenGL | 4.6 | 4.6 |
OpenCL | 2.1 | 3.0 |
Vulkan | 1.2 | 1.1 |
Shader model | 6.4 | 6.4 |
CUDA | — | 5.2 |