ATI Radeon HD 4855 vs ATI Mobility Radeon HD 4550
Comparative analysis of ATI Radeon HD 4855 and ATI Mobility Radeon HD 4550 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 Radeon HD 4855
- Around 5% higher core clock speed: 575 MHz vs 550 MHz
- 4.2x more texture fill rate: 18.4 GTexel / s vs 4.4 GTexel / s
- 8x more pipelines: 640 vs 80
- 8.4x better floating-point performance: 736.0 gflops vs 88 gflops
- 2.6x more memory clock speed: 3600 MHz vs 1400 MHz
Core clock speed | 575 MHz vs 550 MHz |
Texture fill rate | 18.4 GTexel / s vs 4.4 GTexel / s |
Pipelines | 640 vs 80 |
Floating-point performance | 736.0 gflops vs 88 gflops |
Memory clock speed | 3600 MHz vs 1400 MHz |
Compare benchmarks
GPU 1: ATI Radeon HD 4855
GPU 2: ATI Mobility Radeon HD 4550
Name | ATI Radeon HD 4855 | ATI Mobility Radeon HD 4550 |
---|---|---|
PassMark - G3D Mark | 191 | |
PassMark - G2D Mark | 290 | |
GFXBench 4.0 - T-Rex (Frames) | 782 | |
GFXBench 4.0 - T-Rex (Fps) | 782 |
Compare specifications (specs)
ATI Radeon HD 4855 | ATI Mobility Radeon HD 4550 | |
---|---|---|
Essentials |
||
Architecture | TeraScale | TeraScale |
Code name | RV770 | M92 |
Launch date | 3 January 2010 | 1 January 2010 |
Place in performance rating | not rated | 1049 |
Type | Desktop | Laptop |
Technical info |
||
Core clock speed | 575 MHz | 550 MHz |
Floating-point performance | 736.0 gflops | 88 gflops |
Manufacturing process technology | 55 nm | 55 nm |
Pipelines | 640 | 80 |
Texture fill rate | 18.4 GTexel / s | 4.4 GTexel / s |
Thermal Design Power (TDP) | 110 Watt | |
Transistor count | 956 million | 242 million |
Video outputs and ports |
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Display Connectors | 1x DVI, 1x HDMI, 1x VGA | No outputs |
Compatibility, dimensions and requirements |
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Interface | PCIe 2.0 x16 | MXM-II |
Length | 220 mm | |
Supplementary power connectors | 1x 6-pin | |
API support |
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DirectX | 10.1 | 10.1 |
OpenGL | 3.3 | 3.3 |
Memory |
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Maximum RAM amount | 512 MB | 512 MB |
Memory bandwidth | 115.2 GB / s | 11.2 GB / s |
Memory bus width | 256 Bit | 64 Bit |
Memory clock speed | 3600 MHz | 1400 MHz |
Memory type | GDDR5 | GDDR3, DDR2, DDR3 |
Shared memory | 0 | |
Technologies |
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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 |