AMD Radeon Instinct MI8 vs AMD Radeon RX 6800M
Graphics Processor
| GPU model | Fiji | Navi 22 |
|---|---|---|
| GPU variant | Fiji XT | Navi 22 XTM |
| Architecture | GCN 3.0 | RDNA 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 7 nm |
| Number of transistors | 8,900 million | 17,200 million |
| Die size | 596 mm² | 335 mm² |
Graphics Card
| Release date | Dec 12th, 2016 | — |
|---|---|---|
| Generation | Radeon Instinct | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x16 | — |
Clocks
| GPU clock | 1000 MHz | — |
|---|---|---|
| Memory clock | 500 MHz 1000 Mbps effective | 2000 MHz 16 Gbps effective |
| Base clock | — | 2321 MHz |
| Game clock | — | 2424 MHz |
| Boost clock | — | 2581 MHz |
Memory Configuration
| Memory size | 4 GB | 12 GB |
|---|---|---|
| Memory type | HBM | GDDR6 |
| Memory bus width | 4096 bit | 192 bit |
| Bandwidth | 512.0 GB/s | 384.0 GB/s |
Render Configuration
| Shading units | 4096 | 2560 |
|---|---|---|
| TMUs | 256 | 160 |
| ROPs | 64 | 64 |
| Compute units | 64 | 40 |
| Cache L1 | 16 KB (per CU) | 128 KB per Array |
| Cache L2 | 2 MB | 3 MB |
| RT cores | — | 40 |
| gpu.details.l0-cache | — | 32 KB per WGP |
| gpu.details.l3-cache | — | 96 MB |
Performance
| Pixel rate | 64.00 GPixel/s | 165.2 GPixel/s |
|---|---|---|
| Texture rate | 256.0 GTexel/s | 413.0 GTexel/s |
| FP16 (half) performance | 8.192 TFLOPS (1:1) | 26.43 TFLOPS (2:1) |
| FP32 (float) performance | 8.192 TFLOPS | 13.21 TFLOPS |
| FP64 (double) performance | 512.0 GFLOPS (1:16) | 825.9 GFLOPS (1:16) |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 152 mm 6 inches | — |
| Width | 111 mm 4.4 inches | — |
| TDP | 175 W | 230 W |
| Suggested PSU | 450 W | — |
| Outputs | No outputs | No outputs |
| Power connectors | 1x 8-pin | None |
API Support & Features
| DirectX | 12 (12_0) | 12 Ultimate (12_2) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 2.1 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 6.3 | 6.5 |
Other Features
Mobile graphics
| Release date | — | 2021 |
|---|---|---|
| gpu.details.availability | — | 2021 |
| Generation | — | Mobility Radeon (Navi II) |
| Production | — | Active |
| Interface | — | PCIe 4.0 x16 |
| Reviews | — | 2 in our database |
