Graphics card comparison
Radeon HD 6790 vs Radeon HD 6770 Green Edition
AMD
Radeon HD 6790
1024 Mb GDDR5
Released 4 Apr 2011
DESKTOP
VS
AMD
Radeon HD 6770 Green Edition
2048 Mb GDDR3
Released 19 Apr 2013
DESKTOP
Summary
Reasons to consider 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- Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications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 6770 Green Edition
- 64 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 6790 .
- This is a much newer product, it might have better long term support.
- Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications
Our verdict
No clear winner declared
We have no data to declare a winner at this time.
Specifications
Core configuration
| Radeon HD 6790 | Radeon HD 6770 Green Edition |
|---|
| GPU Name | Barts (Barts LE) | Juniper (Juniper PRO) |
| Fab Process | 40 nm | 40 nm |
| Die Size | 255 mm² | 166 mm² |
| Transistors | 1,700 million | 1,040 million |
| Shaders | 800 | 720 |
| Compute Units | 10 | 9 |
| Core clock | 840 MHz | 700 MHz |
| ROPs | 16 | 16 |
| TMUs | 40 | 36 |
Memory configuration
| Radeon HD 6790 | Radeon HD 6770 Green Edition |
|---|
| Memory Type | GDDR5 | GDDR3 |
| Bus Width | 256 bit | 128 bit |
| Memory Speed | 1050 MHz
4200 MHz effective | 667 MHz
1334 MHz effective |
| Memory Size | 1024 Mb | 2048 Mb |
Additional details
| Radeon HD 6790 | Radeon HD 6770 Green Edition |
|---|
| TDP | 150 watts | 86 watts |
| Release Date | 4 Apr 2011 | 19 Apr 2013 |
Raw performance comparison
Pixel Rate
- Radeon HD 679013.40 GP/s
- Radeon HD 6770 Green Edition11.20 GP/s
GigaPixels - higher is better
Texel Rate
- Radeon HD 679033.60 GT/s
- Radeon HD 6770 Green Edition25.20 GT/s
GigaTexels - higher is better
Memory bandwidth
- Radeon HD 6790134.00 GB/s
- Radeon HD 6770 Green Edition21.30 GB/s
GB/s - higher is better
Single precision performance
- Radeon HD 67901344.00 GFLOPs
- Radeon HD 6770 Green Edition1008.00 GFLOPs
GFLOPs - higher is better