Graphics card comparison
Radeon HD 6770 vs Radeon HD 6790
AMD
Radeon HD 6770
1024 Mb GDDR5
Released 21 Jan 2011
DESKTOP
VS
AMD
Radeon HD 6790
1024 Mb GDDR5
Released 4 Apr 2011
DESKTOP
Summary
Synthetic performance index
- Radeon HD 6770100%
- Radeon HD 6790121%
Relative performance
Reasons to consider the Radeon HD 6770
- 42 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 6790 .
- Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications
Reasons to consider the Radeon HD 6790
- Around 21% higher average synthetic performance.
- Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications
Our verdict
HWSpot recommends the Radeon HD 6790
The Radeon HD 6790 is the better performing card based on the synthetic benchmarks used (1 benchmarks).
Specifications
Core configuration
| Radeon HD 6770 | Radeon HD 6790 |
|---|
| GPU Name | Juniper (Juniper XT) | Barts (Barts LE) |
| Fab Process | 40 nm | 40 nm |
| Die Size | 166 mm² | 255 mm² |
| Transistors | 1,040 million | 1,700 million |
| Shaders | 800 | 800 |
| Compute Units | 10 | 10 |
| Core clock | 850 MHz | 840 MHz |
| ROPs | 16 | 16 |
| TMUs | 40 | 40 |
Memory configuration
| Radeon HD 6770 | Radeon HD 6790 |
|---|
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 128 bit | 256 bit |
| Memory Speed | 1200 MHz
4800 MHz effective | 1050 MHz
4200 MHz effective |
| Memory Size | 1024 Mb | 1024 Mb |
Additional details
| Radeon HD 6770 | Radeon HD 6790 |
|---|
| TDP | 108 watts | 150 watts |
| Release Date | 21 Jan 2011 | 4 Apr 2011 |
Raw performance comparison
Pixel Rate
- Radeon HD 677013.60 GP/s
- Radeon HD 679013.40 GP/s
GigaPixels - higher is better
Texel Rate
- Radeon HD 677034.00 GT/s
- Radeon HD 679033.60 GT/s
GigaTexels - higher is better
Memory bandwidth
- Radeon HD 677076.80 GB/s
- Radeon HD 6790134.00 GB/s
GB/s - higher is better
Single precision performance
- Radeon HD 67701360.00 GFLOPs
- Radeon HD 67901344.00 GFLOPs
GFLOPs - higher is better
Synthetic benchmarks
3DMark 11
- Radeon HD 67702550
- Radeon HD 67903090
Points (higher is better)