AMD Radeon R9 280X vs AMD Radeon R9 380X
Graphics Processor
| GPU model | Tahiti | Antigua |
|---|---|---|
| GPU variant | Tahiti XTL (215-0821065) | Antigua XT (215-0877016) |
| Architecture | GCN 1.0 | GCN 3.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 4,313 million | 5,000 million |
| Die size | 352 mm² | 366 mm² |
Graphics Card
| Release date | Oct 8th, 2013 | Nov 19th, 2015 |
|---|---|---|
| Generation | Volcanic Islands | Pirate Islands |
| Production | End-of-life | End-of-life |
| Launch price | 299 USD | 229 USD |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Reviews | 105 in our database | 36 in our database |
| Predecessor | Sea Islands | Volcanic Islands |
| Successor | Pirate Islands | Arctic Islands |
Clocks
| Base clock | 850 MHz | — |
|---|---|---|
| Boost clock | 1000 MHz | — |
| Memory clock | 1500 MHz 6 Gbps effective | 1425 MHz 5.7 Gbps effective |
| GPU clock | — | 970 MHz |
Memory Configuration
| Memory size | 3 GB | 4 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 384 bit | 256 bit |
| Bandwidth | 288.0 GB/s | 182.4 GB/s |
Render Configuration
| Shading units | 2048 | 2048 |
|---|---|---|
| TMUs | 128 | 128 |
| ROPs | 32 | 32 |
| Compute units | 32 | 32 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 768 KB | 512 KB |
Performance
| Pixel rate | 32.00 GPixel/s | 31.04 GPixel/s |
|---|---|---|
| Texture rate | 128.0 GTexel/s | 124.2 GTexel/s |
| FP32 (float) performance | 4.096 TFLOPS | 3.973 TFLOPS |
| FP64 (double) performance | 1,024 GFLOPS (1:4) | 248.3 GFLOPS (1:16) |
| FP16 (half) performance | — | 3.973 TFLOPS (1:1) |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 275 mm 10.8 inches | 221 mm 8.7 inches |
| Width | 109 mm 4.3 inches | 111 mm 4.4 inches |
| Height | 36 mm 1.4 inches | — |
| TDP | 250 W | 190 W |
| Suggested PSU | 600 W | 450 W |
| Outputs | 2x DVI1x HDMI1x DisplayPort | 2x DVI1x HDMI1x DisplayPort |
| Power connectors | 1x 6-pin + 1x 8-pin | 2x 6-pin |
| Board number | C386 | C766, C784 |
API Support & Features
| DirectX | 12 (11_1) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 5.1 | 6.3 |
