AMD Radeon RX 6600 XT vs AMD Radeon RX 6900 XT
Graphics Processor
| GPU model | Navi 23 | Navi 21 |
|---|---|---|
| GPU variant | Navi 23 XT (215-130000006) | Navi 21 XTX (215-121000167) |
| Architecture | RDNA 2.0 | RDNA 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 7 nm | 7 nm |
| Number of transistors | 11,060 million | 26,800 million |
| Die size | 237 mm² | 520 mm² |
Graphics Card
| Release date | Jul 30th, 2021 | Oct 28th, 2020 |
|---|---|---|
| Generation | Navi II | Navi II |
| Predecessor | Navi | Navi |
| Production | Active | Active |
| Launch price | 379 USD | 999 USD |
| Interface | PCIe 4.0 x8 | PCIe 4.0 x16 |
| gpu.details.availability | Aug 10th, 2021 | Dec 8th, 2020 |
| Reviews | 45 in our database | 32 in our database |
| Successor | Navi III | Navi III |
Clocks
| Base clock | 1968 MHz | 1825 MHz |
|---|---|---|
| Boost clock | 2589 MHz | 2250 MHz |
| Memory clock | 2000 MHz 16 Gbps effective | 2000 MHz 16 Gbps effective |
| Game clock | 2359 MHz | 2015 MHz |
Memory Configuration
| Memory size | 8 GB | 16 GB |
|---|---|---|
| Memory type | GDDR6 | GDDR6 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 256.0 GB/s | 512.0 GB/s |
Render Configuration
| Shading units | 2048 | 5120 |
|---|---|---|
| TMUs | 128 | 320 |
| ROPs | 64 | 128 |
| Compute units | 32 | 80 |
| RT cores | 32 | 80 |
| gpu.details.l0-cache | 32 KB per WGP | 32 KB per WGP |
| Cache L1 | 128 KB per Array | 128 KB per Array |
| Cache L2 | 2 MB | 4 MB |
| gpu.details.l3-cache | 32 MB | 128 MB |
Performance
| Pixel rate | 165.7 GPixel/s | 288.0 GPixel/s |
|---|---|---|
| Texture rate | 331.4 GTexel/s | 720.0 GTexel/s |
| FP16 (half) performance | 21.21 TFLOPS (2:1) | 46.08 TFLOPS (2:1) |
| FP32 (float) performance | 10.60 TFLOPS | 23.04 TFLOPS |
| FP64 (double) performance | 662.8 GFLOPS (1:16) | 1,440 GFLOPS (1:16) |
Dimensions & Outputs
| Slot width | Dual-slot | Triple-slot |
|---|---|---|
| TDP | 160 W | 300 W |
| Suggested PSU | 450 W | 700 W |
| Outputs | 1x HDMI2x DisplayPort | 1x HDMI2x DisplayPort1x USB Type-C |
| Power connectors | 1x 8-pin | 2x 8-pin |
| Length | 190 mm 7.5 inches | 267 mm 10.5 inches |
| Width | 110 mm 4.3 inches | 120 mm 4.7 inches |
| Height | 40 mm 1.6 inches | 50 mm 2 inches |
| Part number | — | 102-D412 |
| Board number | — | 109-D412A7 |
API Support & Features
| DirectX | 12.0 Ultimate (12_2) | 12 Ultimate (12_2) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 | 2.1 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 6.5 | 6.5 |
