Radeon HD 4855 vs Radeon HD 7950 Boost
Summary
Reasons to consider Radeon HD 4855 |
| 90 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 7950 Boost . |
| Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications |
Reasons to consider Radeon HD 7950 Boost |
| This is a much newer product, it might have better long term support. |
| 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| Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications |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 HD 7950 Boost
Based on theoretical specifications.
Core Configuration
| Radeon HD 4855 | | Radeon HD 7950 Boost | |
|---|
| GPU Name | RV770 (RV770 PRO) | vs | Tahiti (Tahiti PRO2) |
| Fab Process | 55 nm | vs | 28 nm |
| Die Size | 256 mm² | vs | 352 mm² |
| Transistors | 956 million | vs | 4,313 million |
| Shaders | 640 | vs | 1792 |
| Compute Units | 8 | vs | 28 |
| Core clock | 575 MHz | vs | 850 MHz |
| ROPs | 16 | vs | 32 |
| TMUs | 32 | vs | 112 |
Memory Configuration
| Radeon HD 4855 | | Radeon HD 7950 Boost | |
|---|
| Memory Type | GDDR5 | vs | GDDR5 |
| Bus Width | 256 bit | vs | 384 bit |
| Memory Speed | 900 MHz
3600 MHz effective | vs | 1250 MHz
5000 MHz effective |
| Memory Size | 512 Mb | vs | 3072 Mb |
Additional details
| Radeon HD 4855 | | Radeon HD 7950 Boost | |
|---|
| TDP | 110 watts | vs | 200 watts |
| Release Date | 3 Jan 2010 | vs | 22 Jun 2012 |
Radeon HD 4855
9.20 GP/s
Radeon HD 7950 Boost
27.20 GP/s
GigaPixels - higher is better
Radeon HD 4855
18.40 GT/s
Radeon HD 7950 Boost
95.20 GT/s
GigaTexels - higher is better
Radeon HD 4855
115.00 GB/s
Radeon HD 7950 Boost
240.00 GB/s
GB/s - higher is better
Radeon HD 4855
736.00 GFLOPs
Radeon HD 7950 Boost
3046.00 GFLOPs
GFLOPs - higher is better