ATI Mobility Radeon HD 4850 X2 vs ATI Mobility Radeon HD 4870
Comparative analysis of ATI Mobility Radeon HD 4850 X2 and ATI Mobility Radeon HD 4870 videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies. Benchmark videocards performance analysis: PassMark - G3D Mark, PassMark - G2D Mark, GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps).
Differences
Reasons to consider the ATI Mobility Radeon HD 4850 X2
- 10x more texture fill rate: 2x 20 GTexel / s billion / sec vs 22 GTexel / s
- 2x more pipelines: 2x 800 vs 800
- Around 82% better floating-point performance: 2x 800.0 gflops vs 880.0 gflops
- 4x more maximum memory size: 2x 1 GB vs 512 MB
- Around 58% higher memory clock speed: 2800 MHz vs 1776 MHz
| Texture fill rate | 2x 20 GTexel / s billion / sec vs 22 GTexel / s |
| Pipelines | 2x 800 vs 800 |
| Floating-point performance | 2x 800.0 gflops vs 880.0 gflops |
| Maximum memory size | 2x 1 GB vs 512 MB |
| Memory clock speed | 2800 MHz vs 1776 MHz |
Reasons to consider the ATI Mobility Radeon HD 4870
- Around 10% higher core clock speed: 550 MHz vs 500 MHz
| Core clock speed | 550 MHz vs 500 MHz |
Compare benchmarks
GPU 1: ATI Mobility Radeon HD 4850 X2
GPU 2: ATI Mobility Radeon HD 4870
| Name | ATI Mobility Radeon HD 4850 X2 | ATI Mobility Radeon HD 4870 |
|---|---|---|
| PassMark - G3D Mark | 720 | |
| PassMark - G2D Mark | 416 | |
| GFXBench 4.0 - T-Rex (Frames) | 3350 | |
| GFXBench 4.0 - T-Rex (Fps) | 3350 |
Compare specifications (specs)
| ATI Mobility Radeon HD 4850 X2 | ATI Mobility Radeon HD 4870 | |
|---|---|---|
Essentials |
||
| Architecture | TeraScale | TeraScale |
| Code name | M98 | M98 |
| Launch date | 9 January 2009 | 9 January 2009 |
| Place in performance rating | not rated | 592 |
| Type | Desktop | Laptop |
Technical info |
||
| Core clock speed | 500 MHz | 550 MHz |
| Floating-point performance | 2x 800.0 gflops | 880.0 gflops |
| Manufacturing process technology | 55 nm | 55 nm |
| Pipelines | 2x 800 | 800 |
| Texture fill rate | 2x 20 GTexel / s billion / sec | 22 GTexel / s |
| 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 | 512 MB |
| Memory bandwidth | 2x 89.6 GB / s | 56.8 GB / s |
| Memory bus width | 2x 256 Bit | 256 Bit |
| Memory clock speed | 2800 MHz | 1776 MHz |
| Memory type | GDDR5 | 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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