Graphics card comparison
Radeon HD 6990 vs Radeon R9 280X
AMD
Radeon HD 6990
2048 Mb GDDR5
Released 8 Mar 2011
DESKTOP
VS
AMD
Radeon R9 280X
3072 Mb GDDR5
Released 8 Oct 2013
DESKTOP
Summary
Synthetic performance index
- Radeon HD 6990100%
- Radeon R9 280X102%
Relative performance
Gaming performance index
- Radeon HD 6990100%
- Radeon R9 280X104%
Relative performance
Reasons to consider the Radeon HD 6990
- Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications
Reasons to consider the Radeon R9 280X
- 125 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 6990 .
- This is a much newer product, it might have better long term support.
- Supports Direct3D 12 Async Compute
- Supports ReLive (allows game streaming/recording with minimum performance penalty)
- Supports Mantle
- Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications
Our verdict
No clear winner declared
These graphics cards seems to have comparable performance based on the game benchmark suite used (4 combinations of games and resolutions).
Specifications
Core configuration
| Radeon HD 6990 | Radeon R9 280X |
|---|
| GPU Name | Antilles (Antilles XT) | Tahiti (Tahiti XTL) |
| Fab Process | 40 nm | 28 nm |
| Die Size | 389 mm² | 352 mm² |
| Transistors | 2,640 million | 4,313 million |
| Shaders | 1536 | 2048 |
| Compute Units | 24 | 32 |
| Core clock | 830 MHz | 850 MHz |
| ROPs | 32 | 32 |
| TMUs | 96 | 128 |
Memory configuration
| Radeon HD 6990 | Radeon R9 280X |
|---|
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 256 bit x2 | 384 bit |
| Memory Speed | 1250 MHz
5000 MHz effective | 1500 MHz
6000 MHz effective |
| Memory Size | 2048 Mb | 3072 Mb |
Additional details
| Radeon HD 6990 | Radeon R9 280X |
|---|
| TDP | 375 watts | 250 watts |
| Release Date | 8 Mar 2011 | 8 Oct 2013 |
Raw performance comparison
Pixel Rate
- Radeon HD 699026.60 GP/s
- Radeon R9 280X27.20 GP/s
GigaPixels - higher is better
Texel Rate
- Radeon HD 699079.70 GT/s
- Radeon R9 280X109.00 GT/s
GigaTexels - higher is better
Memory bandwidth
- Radeon HD 6990160.00 GB/s
- Radeon R9 280X288.00 GB/s
GB/s - higher is better
Single precision performance
- Radeon HD 69902550.00 GFLOPs
- Radeon R9 280X3482.00 GFLOPs
GFLOPs - higher is better
Synthetic benchmarks
3DMark 11
- Radeon HD 699010720
- Radeon R9 280X10960
Points (higher is better)
Game benchmarks
Bioshock Infinite
DX11, Ultra, DDOD, FXAA
- Radeon HD 699045
- Radeon R9 280X48
FPS (higher is better)
Bioshock Infinite
DX11, Ultra Quality,DDOD, FX AA
- Radeon HD 699071
- Radeon R9 280X69
FPS (higher is better)
Crysis 3
DX11,Very High Quality, FXAA
- Radeon HD 699041
- Radeon R9 280X42
FPS (higher is better)
Medal Of Honor Warfighter
DX11, Ultra Quality, 4xMSAA
- Radeon HD 699060
- Radeon R9 280X67
FPS (higher is better)