GPU model | Lexa | RV770 |
---|---|---|
GPU variant | Lexa PRO (215-0904018) | RV770 XT (215-0669049) |
Architecture | GCN 4.0 | TeraScale |
Foundry | GlobalFoundries | TSMC |
Manufacturing process | 14 nm | 55 nm |
Number of transistors | 2,200 million | 956 million |
Die size | 103 mm² | 256 mm² |
Release date | Mar 27th, 2019 | Jun 25th, 2008 |
---|---|---|
Generation | Polaris | Radeon R700 |
Production | End-of-life | End-of-life |
Interface | PCIe 3.0 x8 | PCIe 2.0 x16 |
Predecessor | Polaris | Radeon R600 |
Successor | Vega | Evergreen |
Launch price | — | 299 USD |
Reviews | — | 135 in our database |
Base clock | 1082 MHz | — |
---|---|---|
Boost clock | 1218 MHz | — |
Memory clock | 1750 MHz 7 Gbps effective | 900 MHz 3.6 Gbps effective |
GPU clock | — | 750 MHz |
Memory size | 2 GB | 512 MB |
---|---|---|
Memory type | GDDR5 | GDDR5 |
Memory bus width | 128 bit | 256 bit |
Bandwidth | 112.0 GB/s | 115.2 GB/s |
Shading units | 512 | 800 |
---|---|---|
TMUs | 32 | 40 |
ROPs | 16 | 16 |
Compute units | 8 | 10 |
Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
Cache L2 | 512 KB | 256 KB |
Pixel rate | 19.49 GPixel/s | 12.00 GPixel/s |
---|---|---|
Texture rate | 38.98 GTexel/s | 30.00 GTexel/s |
FP16 (half) performance | 1,247 GFLOPS (1:1) | — |
FP32 (float) performance | 1,247 GFLOPS | 1,200 GFLOPS |
FP64 (double) performance | 77.95 GFLOPS (1:16) | 240.0 GFLOPS (1:5) |
Slot width | Dual-slot | Dual-slot |
---|---|---|
Length | 145 mm 5.7 inches | 241 mm 9.5 inches |
TDP | 50 W | 150 W |
Suggested PSU | 250 W | 450 W |
Outputs | 1x DVI1x HDMI1x DisplayPort | 2x DVI1x S-Video |
Power connectors | None | 2x 6-pin |
Board number | D090 | B507-31 |
Width | — | 111 mm 4.4 inches |
Height | — | 40 mm 1.6 inches |
DirectX | 12 (12_0) | 10.1 (10_1) |
---|---|---|
OpenGL | 4.6 | 3.3 |
OpenCL | 2.1 | 1.1 |
Vulkan | 1.2 | — |
Shader model | 6.4 | 4.1 |