ATI Mobility Radeon HD 4850 X2 vs ATI Mobility Radeon HD 4870 X2
Comparative analysis of ATI Mobility Radeon HD 4850 X2 and ATI Mobility Radeon HD 4870 X2 videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies.
Differences
Reasons to consider the ATI Mobility Radeon HD 4870 X2
- Around 10% higher core clock speed: 550 MHz vs 500 MHz
- Around 1% higher texture fill rate: 2x 22 GTexel / s billion / sec vs 2x 20 GTexel / s billion / sec
- Around 10% better floating-point performance: 2x 880.0 gflops vs 2x 800.0 gflops
| Core clock speed | 550 MHz vs 500 MHz |
| Texture fill rate | 2x 22 GTexel / s billion / sec vs 2x 20 GTexel / s billion / sec |
| Floating-point performance | 2x 880.0 gflops vs 2x 800.0 gflops |
Compare specifications (specs)
| ATI Mobility Radeon HD 4850 X2 | ATI Mobility Radeon HD 4870 X2 | |
|---|---|---|
Essentials |
||
| Architecture | TeraScale | TeraScale |
| Code name | M98 | M98 |
| Launch date | 9 January 2009 | 9 January 2009 |
| Place in performance rating | not rated | not rated |
| Type | Desktop | Laptop |
Technical info |
||
| Core clock speed | 500 MHz | 550 MHz |
| Floating-point performance | 2x 800.0 gflops | 2x 880.0 gflops |
| Manufacturing process technology | 55 nm | 55 nm |
| Pipelines | 2x 800 | 1600 |
| Texture fill rate | 2x 20 GTexel / s billion / sec | 2x 22 GTexel / s billion / sec |
| Transistor count | 956 million | 956 million |
Video outputs and ports |
||
| Display Connectors | No outputs | No outputs |
Compatibility, dimensions and requirements |
||
| Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Laptop size | large | |
API support |
||
| DirectX | 10.1 | 10.1 |
| OpenGL | 3.3 | 3.3 |
Memory |
||
| Maximum RAM amount | 2x 1 GB | 2x 1 GB |
| Memory bandwidth | 2x 89.6 GB / s | 2x 89.6 GB / s |
| Memory bus width | 2x 256 Bit | 256 Bit |
| Memory clock speed | 2800 MHz | 2800 MHz |
| Memory type | GDDR5 | GDDR3, GDDR5 |
| Shared memory | 0 | |
Technologies |
||
| 1x Dual-Link/Single-Link DVI | ||
| 1x Single-Link DVI Support (all display ports have to be supported by the laptop manufacturer) | ||
| DisplayPort support up to 2560x1600 | ||
| HDMI support up to 1920x1080 (both with 7.1 AC3 Audio) | ||
| PCI-E 2.0 x16 | ||
| Powerplay | ||
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