AMD Radeon HD 7870 GHz Edition vs AMD Radeon RX 6600
Graphics Processor
| GPU model | Pitcairn | Navi 23 |
|---|---|---|
| GPU variant | Pitcairn XT (215-0828047) | Navi 23 XL (215-130000016) |
| Architecture | GCN 1.0 | RDNA 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 7 nm |
| Number of transistors | 2,800 million | 11,060 million |
| Die size | 212 mm² | 237 mm² |
Graphics Card
| Release date | Mar 5th, 2012 | Oct 13th, 2021 |
|---|---|---|
| Generation | Southern Islands | Navi II |
| Production | End-of-life | Active |
| Launch price | 349 USD | 329 USD |
| Interface | PCIe 3.0 x16 | PCIe 4.0 x8 |
| Reviews | 95 in our database | — |
| Predecessor | Northern Islands | Navi |
| Successor | Sea Islands | Navi III |
Clocks
| GPU clock | 1000 MHz | — |
|---|---|---|
| Memory clock | 1200 MHz 4.8 Gbps effective | 1750 MHz 14 Gbps effective |
| Base clock | — | 1626 MHz |
| Boost clock | — | 2491 MHz |
| Game clock | — | 2044 MHz |
Memory Configuration
| Memory size | 2 GB | 8 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR6 |
| Memory bus width | 256 bit | 128 bit |
| Bandwidth | 153.6 GB/s | 224.0 GB/s |
Render Configuration
| Shading units | 1280 | 1792 |
|---|---|---|
| TMUs | 80 | 112 |
| ROPs | 32 | 64 |
| Compute units | 20 | 28 |
| Cache L1 | 16 KB (per CU) | 128 KB per Array |
| Cache L2 | 512 KB | 2 MB |
| RT cores | — | 28 |
| gpu.details.l0-cache | — | 32 KB per WGP |
| gpu.details.l3-cache | — | 32 MB |
Performance
| Pixel rate | 32.00 GPixel/s | 159.4 GPixel/s |
|---|---|---|
| Texture rate | 80.00 GTexel/s | 279.0 GTexel/s |
| FP32 (float) performance | 2.560 TFLOPS | 8.928 TFLOPS |
| FP64 (double) performance | 160.0 GFLOPS (1:16) | 558.0 GFLOPS (1:16) |
| FP16 (half) performance | — | 17.86 TFLOPS (2:1) |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 241 mm 9.5 inches | 190 mm 7.5 inches |
| TDP | 175 W | 132 W |
| Suggested PSU | 450 W | 300 W |
| Outputs | 1x DVI1x HDMI2x mini-DisplayPort | 1x HDMI3x DisplayPort |
| Power connectors | 2x 6-pin | 1x 8-pin |
| Board number | C401-47 | — |
| Width | — | 110 mm 4.3 inches |
| Height | — | 40 mm 1.6 inches |
API Support & Features
| DirectX | 12 (11_1) | 12.0 Ultimate (12_2) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 5.1 | 6.5 |
