AMD Radeon R6 M255DX vs AMD Radeon RX 7900 XT
Graphics Processor
| GPU model | Jet | Navi 31 |
|---|---|---|
| GPU variant | Jet PRO (216-0568010) | Navi 31 XTX |
| Architecture | GCN 1.0 | RDNA 3.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 5 nm |
| Number of transistors | 690 million | unknown |
| Die size | 56 mm² | unknown |
Integrated Graphics
| Release date | Jan 7th, 2014 | — |
|---|---|---|
| Generation | Crystal System (Rx M200) | — |
| Production | End-of-life | — |
| Interface | IGP | — |
Clocks
| Base clock | 780 MHz | 1800 MHz |
|---|---|---|
| Boost clock | 855 MHz | 2000 MHz |
| Memory clock | System Shared | 2250 MHz 18 Gbps effective |
| Game clock | — | 1900 MHz |
Memory Configuration
| Memory size | System Shared | 16 GB |
|---|---|---|
| Memory type | System Shared | GDDR6 |
| Memory bus width | System Shared | 256 bit |
| Bandwidth | System Dependent | 576.0 GB/s |
Render Configuration
| Shading units | 320 | 15360 |
|---|---|---|
| TMUs | 20 | 960 |
| ROPs | 8 | 256 |
| Compute units | 5 | 240 |
| Cache L1 | 16 KB (per CU) | 128 KB per Array |
| Cache L2 | 128 KB | 4 MB |
| RT cores | — | 240 |
| gpu.details.l0-cache | — | 32 KB per WGP |
| gpu.details.l3-cache | — | 512 MB |
Performance
| Pixel rate | 6.840 GPixel/s | 512.0 GPixel/s |
|---|---|---|
| Texture rate | 17.10 GTexel/s | 1,920 GTexel/s |
| FP32 (float) performance | 547.2 GFLOPS | 61.44 TFLOPS |
| FP64 (double) performance | 34.20 GFLOPS (1:16) | 3.840 TFLOPS (1:16) |
| FP16 (half) performance | — | 122.9 TFLOPS (2:1) |
Dimensions & Outputs
| Slot width | IGP | Dual-slot |
|---|---|---|
| TDP | unknown | 350 W |
| Outputs | No outputs | 1x HDMI3x DisplayPort |
| Length | — | 267 mm 10.5 inches |
| Width | — | 135 mm 5.3 inches |
| Height | — | 50 mm 2 inches |
| Suggested PSU | — | 750 W |
| Power connectors | — | 2x 8-pin |
| Part number | — | — |
API Support & Features
| DirectX | 12 (11_1) | 12 Ultimate (12_2) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 5.1 | 6.5 |
Other Features
Graphics Card
| Release date | — | 2022 |
|---|---|---|
| Generation | — | Navi III |
| Production | — | Unreleased |
| Interface | — | PCIe 4.0 x16 |
| Predecessor | — | Navi II |
