AMD Radeon R9 270 1024SP vs AMD Radeon RX 460
Graphics Processor
| GPU model | Pitcairn | Baffin |
|---|---|---|
| GPU variant | Pitcairn PRO (215-0828062) | Baffin PRO |
| Architecture | GCN 1.0 | GCN 4.0 |
| Foundry | TSMC | GlobalFoundries |
| Manufacturing process | 28 nm | 14 nm |
| Number of transistors | 2,800 million | 3,000 million |
| Die size | 212 mm² | 123 mm² |
Graphics Card
| Release date | Mar 13th, 2015 | Aug 8th, 2016 |
|---|---|---|
| Generation | Volcanic Islands | Arctic Islands |
| Production | End-of-life | Active |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x8 |
| Reviews | 32 in our database | — |
| Predecessor | Sea Islands | Pirate Islands |
| Successor | Pirate Islands | Polaris |
Clocks
| Base clock | 900 MHz | 1090 MHz |
|---|---|---|
| Boost clock | 925 MHz | 1200 MHz |
| Memory clock | 1200 MHz 4.8 Gbps effective | 1750 MHz 7 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 2 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 256 bit | 128 bit |
| Bandwidth | 153.6 GB/s | 112.0 GB/s |
Render Configuration
| Shading units | 1024 | 896 |
|---|---|---|
| TMUs | 64 | 56 |
| ROPs | 32 | 16 |
| Compute units | 16 | 14 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 512 KB | 1024 KB |
Performance
| Pixel rate | 29.60 GPixel/s | 19.20 GPixel/s |
|---|---|---|
| Texture rate | 59.20 GTexel/s | 67.20 GTexel/s |
| FP32 (float) performance | 1.894 TFLOPS | 2.150 TFLOPS |
| FP64 (double) performance | 118.4 GFLOPS (1:16) | 134.4 GFLOPS (1:16) |
| FP16 (half) performance | — | 2.150 TFLOPS (1:1) |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| TDP | 150 W | 75 W |
| Suggested PSU | 450 W | 250 W |
| Outputs | 2x DVI1x HDMI1x DisplayPort | 1x DVI1x HDMI1x DisplayPort |
| Power connectors | 1x 6-pin | None |
| Board number | C403 | C994 |
| Length | — | 170 mm 6.7 inches |
API Support & Features
| DirectX | 12 (11_1) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 5.1 | 6.4 |
