AMD Radeon R9 390X vs NVIDIA GeForce GTX 780 Ti
Graphics Processor
| GPU model | Grenada | GK110B |
|---|---|---|
| GPU variant | Grenada XT (215-0880004) | GK110-425-B1 |
| Architecture | GCN 2.0 | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 6,200 million | 7,080 million |
| Die size | 438 mm² | 561 mm² |
Graphics Card
| Release date | Jun 18th, 2015 | Nov 7th, 2013 |
|---|---|---|
| Generation | Pirate Islands | GeForce 700 |
| Production | End-of-life | End-of-life |
| Launch price | 429 USD | 699 USD |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Reviews | 60 in our database | 94 in our database |
| Predecessor | Volcanic Islands | GeForce 600 |
| Successor | Arctic Islands | GeForce 900 |
Clocks
| GPU clock | 1050 MHz | — |
|---|---|---|
| Memory clock | 1500 MHz 6 Gbps effective | 1753 MHz 7 Gbps effective |
| Base clock | — | 875 MHz |
| Boost clock | — | 928 MHz |
Memory Configuration
| Memory size | 8 GB | 3 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 512 bit | 384 bit |
| Bandwidth | 384.0 GB/s | 336.6 GB/s |
Render Configuration
| Shading units | 2816 | 2880 |
|---|---|---|
| TMUs | 176 | 240 |
| ROPs | 64 | 48 |
| Compute units | 44 | — |
| Cache L1 | 16 KB (per CU) | 16 KB (per SMX) |
| Cache L2 | 1024 KB | 1536 KB |
| SMX count | — | 15 |
Performance
| Pixel rate | 67.20 GPixel/s | 55.68 GPixel/s |
|---|---|---|
| Texture rate | 184.8 GTexel/s | 222.7 GTexel/s |
| FP32 (float) performance | 5.914 TFLOPS | 5.345 TFLOPS |
| FP64 (double) performance | 739.2 GFLOPS (1:8) | 222.7 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 275 mm 10.8 inches | 267 mm 10.5 inches |
| Width | 109 mm 4.3 inches | 111 mm 4.4 inches |
| Height | 36 mm 1.4 inches | 38 mm 1.5 inches |
| TDP | 275 W | 250 W |
| Suggested PSU | 600 W | 600 W |
| Outputs | 2x DVI1x HDMI1x DisplayPort | 2x DVI1x HDMI1x DisplayPort |
| Power connectors | 1x 6-pin + 1x 8-pin | 1x 6-pin + 1x 8-pin |
| Board number | C671, C679-37 | P2083 SKU 30 |
API Support & Features
| DirectX | 12 (12_0) | 12 (11_1) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 3.0 |
| Vulkan | 1.2 | 1.1 |
| Shader model | 6.3 | 5.1 |
| CUDA | — | 3.5 |
