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 594
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