AMD Radeon HD 6770 vs AMD Radeon HD 6790
What is the difference between AMD Radeon HD 6770 and AMD Radeon HD 6790. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Juniper | GPU Name | Barts |
| Juniper XT (215-0754013) | Model number | Barts LE (215-0798002) |
| TeraScale 2 | Architecture | TeraScale 2 |
| TSMC | Foundry | TSMC |
| 40 nm | Process Size | 40 nm |
| 1,040 million | Transistors | 1,700 million |
| 166 mm² | Die Size | 255 mm² |
Graphics Card
| Jan 21st, 2011 | Release Date | Apr 4th, 2011 |
| Northern Islands (HD 6700) | Family | Northern Islands (HD 6700) |
| End-of-life | Production | End-of-life |
| 129 USD | Launch Price | 149 USD |
| Evergreen | Predecessor | Evergreen |
| PCIe 2.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 1024 MB | Memory Size | 1024 MB |
| GDDR5 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 256 bit |
| 76.80 GB/s | Bandwidth | 134.4 GB/s |
Performance
| 13.60 GPixel/s | Pixel fillrate | 13.44 GPixel/s |
| 34.00 GTexel/s | Texture fillrate | 33.60 GTexel/s |
| 1,360 GFLOPS | FP32 (float) performance | 1,344 GFLOPS |
Clock Speeds
| 1200 MHz 4.8 Gbps effective | Memory Clock | 1050 MHz 4.2 Gbps effective |
| 850 MHz | GPU Clock | 840 MHz |
Render Config
| 800 | Shading Units | 800 |
| 40 | TMUs | 40 |
| 16 | ROPs | 16 |
| 10 | Compute Units | 10 |
| 8 KB (per CU) | L1 Cache | 8 KB (per CU) |
| 256 KB | L2 Cache | 512 KB |
Board Design
| Dual-slot | Slot Width | Dual-slot |
| 198 mm 7.8 inches | Length | 198 mm 7.8 inches |
| 108 W | Thermal design power (TDP) | 150 W |
| 300 W | Suggested PSU | 450 W |
| 2x DVI 1x HDMI 2x mini-DisplayPort | Display Connectors | 2x DVI 1x HDMI 1x DisplayPort |
| 1x 6-pin | Power Connectors | 2x 6-pin |
| C010 | Board Number | C220, C222 |
API support
| 11.2 (11_0) | DirectX | 11.2 (11_0) |
| 4.4 | OpenGL | 4.4 |
| 1.2 | OpenCL | 1.2 |
| N/A | Vulkan | N/A |
| 5.0 | Shader Model | 5.0 |