Radeon HD 4855 vs Radeon HD 8770 OEM
Summary
Reasons to consider Radeon HD 4855 |
| Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications |
Reasons to consider Radeon HD 8770 OEM |
| 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 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| Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications |
HWBench recommends Radeon HD 8770 OEM
Based on theoretical specifications.
Core Configuration
| Radeon HD 4855 | | Radeon HD 8770 OEM | |
|---|
| GPU Name | RV770 (RV770 PRO) | vs | Bonaire (Bonaire XT) |
| Fab Process | 55 nm | vs | 28 nm |
| Die Size | 256 mm² | vs | 160 mm² |
| Transistors | 956 million | vs | 2,080 million |
| Shaders | 640 | vs | 896 |
| Compute Units | 8 | vs | 14 |
| Core clock | 575 MHz | vs | 1050 MHz |
| ROPs | 16 | vs | 16 |
| TMUs | 32 | vs | 56 |
Memory Configuration
| Radeon HD 4855 | | Radeon HD 8770 OEM | |
|---|
| Memory Type | GDDR5 | vs | GDDR5 |
| Bus Width | 256 bit | vs | 128 bit |
| Memory Speed | 900 MHz
3600 MHz effective | vs | 1500 MHz
6000 MHz effective |
| Memory Size | 512 Mb | vs | 1024 Mb |
Additional details
| Radeon HD 4855 | | Radeon HD 8770 OEM | |
|---|
| TDP | 110 watts | vs | 85 watts |
| Release Date | 3 Jan 2010 | vs | 2 Sep 2013 |
Radeon HD 4855
9.20 GP/s
Radeon HD 8770 OEM
16.80 GP/s
GigaPixels - higher is better
Radeon HD 4855
18.40 GT/s
Radeon HD 8770 OEM
58.80 GT/s
GigaTexels - higher is better
Radeon HD 4855
115.00 GB/s
Radeon HD 8770 OEM
96.00 GB/s
GB/s - higher is better
Radeon HD 4855
736.00 GFLOPs
Radeon HD 8770 OEM
1882.00 GFLOPs
GFLOPs - higher is better