GPU model | Neptune | GM204 |
---|---|---|
GPU variant | Neptune XT (216-0847000) | — |
Architecture | GCN 1.0 | Maxwell 2.0 |
Foundry | TSMC | TSMC |
Manufacturing process | 28 nm | 28 nm |
Number of transistors | 2,800 million | 5,200 million |
Die size | 212 mm² | 398 mm² |
Release date | May 14th, 2013 | — |
---|---|---|
Generation | Solar System (HD 8900M) | — |
Production | End-of-life | — |
Interface | PCIe 3.0 x16 | — |
Predecessor | London | — |
Successor | Crystal System | — |
Base clock | 850 MHz | 557 MHz |
---|---|---|
Boost clock | 900 MHz | 1178 MHz |
Memory clock | 1200 MHz 4.8 Gbps effective | 1253 MHz 5 Gbps effective |
Memory size | 4 GB | 8 GB |
---|---|---|
Memory type | GDDR5 | GDDR5 |
Memory bus width | 256 bit | 256 bit |
Bandwidth | 153.6 GB/s | 160.4 GB/s |
Shading units | 1280 | 2048 |
---|---|---|
TMUs | 80 | 128 |
ROPs | 32 | 64 |
Compute units | 20 | — |
Cache L1 | 16 KB (per CU) | 48 KB (per SMM) |
Cache L2 | 512 KB | 2 MB |
SMM count | — | 16 |
Pixel rate | 28.80 GPixel/s | 75.39 GPixel/s |
---|---|---|
Texture rate | 72.00 GTexel/s | 150.8 GTexel/s |
FP32 (float) performance | 2.304 TFLOPS | 4.825 TFLOPS |
FP64 (double) performance | 144.0 GFLOPS (1:16) | 150.8 GFLOPS (1:32) |
Slot width | MXM Module | Dual-slot |
---|---|---|
TDP | 100 W | 225 W |
Outputs | No outputs | No outputs |
Length | — | 267 mm 10.5 inches |
Suggested PSU | — | 550 W |
Power connectors | — | 1x 8-pin |
DirectX | 12 (11_1) | 12 (12_1) |
---|---|---|
OpenGL | 4.6 | 4.6 |
OpenCL | 1.2 | 3.0 |
Vulkan | 1.2 | 1.1 |
Shader model | 5.1 | 6.4 |
CUDA | — | 5.2 |
Release date | — | Aug 30th, 2015 |
---|---|---|
Generation | — | GRID |
Production | — | End-of-life |
Interface | — | PCIe 3.0 x16 |