ATI Radeon HD 4770 vs ATI Mobility Radeon HD 3870 X2

Comparative analysis of ATI Radeon HD 4770 and ATI Mobility Radeon HD 3870 X2 videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory. Benchmark videocards performance analysis: PassMark - G3D Mark, PassMark - G2D Mark, GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps).

ATI Radeon HD 4770

ATI Mobility Radeon HD 3870 X2

Differences

Reasons to consider the ATI Radeon HD 4770

Videocard is newer: launch date 7 month(s) later
Around 14% higher core clock speed: 750 MHz vs 660 MHz
Around 14% better floating-point performance: 960.0 gflops vs 2x 422.4 gflops
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 40 nm vs 55 nm
Around 38% lower typical power consumption: 80 Watt vs 110 Watt
Around 88% higher memory clock speed: 3200 MHz vs 1700 MHz
Around 90% better performance in PassMark - G3D Mark: 908 vs 478

Specifications (specs)
Launch date	28 April 2009 vs 1 September 2008
Core clock speed	750 MHz vs 660 MHz
Floating-point performance	960.0 gflops vs 2x 422.4 gflops
Manufacturing process technology	40 nm vs 55 nm
Thermal Design Power (TDP)	80 Watt vs 110 Watt
Memory clock speed	3200 MHz vs 1700 MHz
Benchmarks
PassMark - G3D Mark	908 vs 478

Reasons to consider the ATI Mobility Radeon HD 3870 X2

8.8x more texture fill rate: 2x 10.56 GTexel / s billion / sec vs 24 GTexel / s
2x more maximum memory size: 2x 512 MB vs 512 MB
Around 56% better performance in PassMark - G2D Mark: 187 vs 120

Specifications (specs)
Texture fill rate	2x 10.56 GTexel / s billion / sec vs 24 GTexel / s
Maximum memory size	2x 512 MB vs 512 MB
Benchmarks
PassMark - G2D Mark	187 vs 120

Compare benchmarks

GPU 1: ATI Radeon HD 4770
GPU 2: ATI Mobility Radeon HD 3870 X2

PassMark - G3D Mark

GPU 1

GPU 2

908

478

PassMark - G2D Mark

GPU 1

GPU 2

120

187

Name	ATI Radeon HD 4770	ATI Mobility Radeon HD 3870 X2
PassMark - G3D Mark	908	478
PassMark - G2D Mark	120	187
GFXBench 4.0 - T-Rex (Frames)	8618
GFXBench 4.0 - T-Rex (Fps)	8618

Compare specifications (specs)

	ATI Radeon HD 4770	ATI Mobility Radeon HD 3870 X2
Essentials
Architecture	TeraScale	TeraScale
Code name	RV740	M88
Launch date	28 April 2009	1 September 2008
Launch price (MSRP)	$109
Place in performance rating	739	869
Type	Desktop	Laptop
Technical info
Core clock speed	750 MHz	660 MHz
Floating-point performance	960.0 gflops	2x 422.4 gflops
Manufacturing process technology	40 nm	55 nm
Pipelines	640	640
Texture fill rate	24 GTexel / s	2x 10.56 GTexel / s billion / sec
Thermal Design Power (TDP)	80 Watt	110 Watt
Transistor count	826 million	666 million
Video outputs and ports
Display Connectors	2x DVI, 1x S-Video	No outputs
Compatibility, dimensions and requirements
Interface	PCIe 2.0 x16	PCIe 2.0 x16
Length	203 mm
Supplementary power connectors	1x 6-pin
Laptop size		large
API support
DirectX	10.1	10.1
OpenGL	3.3	3.3
Memory
Maximum RAM amount	512 MB	2x 512 MB
Memory bandwidth	51.2 GB / s	2x 54.4 GB / s
Memory bus width	128 Bit	256 Bit
Memory clock speed	3200 MHz	1700 MHz
Memory type	GDDR5	GDDR3
Shared memory		0