Radeon R9 285X vs Radeon R9 280X
Summary
Reasons to consider Radeon R9 285X |
| 50 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon R9 280X . |
| Supports Direct3D 12 Async Compute |
| Supports FreeSync |
| Supports ReLive (allows game streaming/recording with minimum performance penalty) |
| Supports TrueAudio |
| Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications |
Reasons to consider Radeon R9 280X |
| Higher theoretical gaming performance, based on specifications. |
| 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| Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications |
HWBench recommends Radeon R9 280X
Based on theoretical specifications.
Core Configuration
| Radeon R9 285X | | Radeon R9 280X | |
|---|
| GPU Name | Tonga (Tonga XT) | vs | Tahiti (Tahiti XTL) |
| Fab Process | 28 nm | vs | 28 nm |
| Die Size | 366 mm² | vs | 352 mm² |
| Transistors | 5,000 million | vs | 4,313 million |
| Shaders | 2048 | vs | 2048 |
| Compute Units | 32 | vs | 32 |
| Core clock | 1002 MHz | vs | 850 MHz |
| ROPs | 32 | vs | 32 |
| TMUs | 128 | vs | 128 |
Memory Configuration
| Radeon R9 285X | | Radeon R9 280X | |
|---|
| Memory Type | GDDR5 | vs | GDDR5 |
| Bus Width | 384 bit | vs | 384 bit |
| Memory Speed | 1375 MHz
5500 MHz effective | vs | 1500 MHz
6000 MHz effective |
| Memory Size | 3072 Mb | vs | 3072 Mb |
Additional details
| Radeon R9 285X | | Radeon R9 280X | |
|---|
| TDP | 200 watts | vs | 250 watts |
| Release Date | UNRELEASED | vs | 8 Oct 2013 |
Radeon R9 285X
32.10 GP/s
Radeon R9 280X
27.20 GP/s
GigaPixels - higher is better
Radeon R9 285X
128.30 GT/s
Radeon R9 280X
109.00 GT/s
GigaTexels - higher is better
Radeon R9 285X
264.00 GB/s
Radeon R9 280X
288.00 GB/s
GB/s - higher is better
Radeon R9 285X
4104.00 GFLOPs
Radeon R9 280X
3482.00 GFLOPs
GFLOPs - higher is better