AMD Radeon HD 6850 vs NVIDIA GeForce RTX 3080
Graphics Processor
| GPU model | Barts | GA102 |
|---|---|---|
| GPU variant | Barts PRO (215-0798006) | GA102-200-KD-A1 |
| Architecture | TeraScale 2 | Ampere |
| Foundry | TSMC | Samsung |
| Manufacturing process | 40 nm | 8 nm |
| Number of transistors | 1,700 million | 28,300 million |
| Die size | 255 mm² | 628 mm² |
Graphics Card
| Release date | Oct 21st, 2010 | Sep 1st, 2020 |
|---|---|---|
| Generation | Northern Islands | GeForce 30 |
| Production | End-of-life | Active |
| Launch price | 179 USD | 699 USD |
| Interface | PCIe 2.0 x16 | PCIe 4.0 x16 |
| Reviews | 105 in our database | 99 in our database |
| Predecessor | Evergreen | GeForce 20 |
| Successor | Southern Islands | — |
| gpu.details.availability | — | Sep 17th, 2020 |
| Current price | — | Amazon / Newegg |
Clocks
| GPU clock | 775 MHz | — |
|---|---|---|
| Memory clock | 1000 MHz 4 Gbps effective | 1188 MHz 19 Gbps effective |
| Base clock | — | 1440 MHz |
| Boost clock | — | 1710 MHz |
Memory Configuration
| Memory size | 1024 MB | 10 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR6X |
| Memory bus width | 256 bit | 320 bit |
| Bandwidth | 128.0 GB/s | 760.3 GB/s |
Render Configuration
| Shading units | 960 | 8704 |
|---|---|---|
| TMUs | 48 | 272 |
| ROPs | 32 | 96 |
| Compute units | 12 | — |
| Cache L1 | 8 KB (per CU) | 128 KB (per SM) |
| Cache L2 | 512 KB | 5 MB |
| SM count | — | 68 |
| Tensor cores | — | 272 |
| RT cores | — | 68 |
Performance
| Pixel rate | 24.80 GPixel/s | 164.2 GPixel/s |
|---|---|---|
| Texture rate | 37.20 GTexel/s | 465.1 GTexel/s |
| FP32 (float) performance | 1,488 GFLOPS | 29.77 TFLOPS |
| FP16 (half) performance | — | 29.77 TFLOPS (1:1) |
| FP64 (double) performance | — | 465.1 GFLOPS (1:64) |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 198 mm 7.8 inches | 285 mm 11.2 inches |
| TDP | 127 W | 320 W |
| Suggested PSU | 300 W | 700 W |
| Outputs | 2x DVI1x HDMI2x mini-DisplayPort | 1x HDMI3x DisplayPort |
| Power connectors | 1x 6-pin | 1x 12-pin |
| Board number | C223 | PG132 SKU 30 |
| Width | — | 112 mm 4.4 inches |
| Height | — | 40 mm 1.6 inches |
API Support & Features
| DirectX | 11.2 (11_0) | 12 Ultimate (12_2) |
|---|---|---|
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 3.0 |
| Vulkan | — | 1.2 |
| Shader model | 5.0 | 6.6 |
| CUDA | — | 8.6 |
