ATI Radeon HD 4770 vs ATI Radeon HD 2900 GT

Comparative analysis of ATI Radeon HD 4770 and ATI Radeon HD 2900 GT 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 Radeon HD 2900 GT

Differences

Reasons to consider the ATI Radeon HD 4770

Videocard is newer: launch date 1 year(s) 5 month(s) later
Around 25% higher core clock speed: 750 MHz vs 601 MHz
3.3x more texture fill rate: 24 GTexel / s vs 7.21 GTexel / s
2.7x more pipelines: 640 vs 240
3.3x better floating-point performance: 960.0 gflops vs 288.48 gflops
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 40 nm vs 80 nm
Around 88% lower typical power consumption: 80 Watt vs 150 Watt
2x more maximum memory size: 512 MB vs 256 MB
2x more memory clock speed: 3200 MHz vs 1600 MHz
3.1x better performance in PassMark - G3D Mark: 898 vs 292
3.3x better performance in GFXBench 4.0 - T-Rex (Frames): 8618 vs 2648
3.3x better performance in GFXBench 4.0 - T-Rex (Fps): 8618 vs 2648

Specifications (specs)
Launch date	28 April 2009 vs 6 November 2007
Core clock speed	750 MHz vs 601 MHz
Texture fill rate	24 GTexel / s vs 7.21 GTexel / s
Pipelines	640 vs 240
Floating-point performance	960.0 gflops vs 288.48 gflops
Manufacturing process technology	40 nm vs 80 nm
Thermal Design Power (TDP)	80 Watt vs 150 Watt
Maximum memory size	512 MB vs 256 MB
Memory clock speed	3200 MHz vs 1600 MHz
Benchmarks
PassMark - G3D Mark	898 vs 292
GFXBench 4.0 - T-Rex (Frames)	8618 vs 2648
GFXBench 4.0 - T-Rex (Fps)	8618 vs 2648

Reasons to consider the ATI Radeon HD 2900 GT

3.5x better performance in PassMark - G2D Mark: 344 vs 97

Benchmarks
PassMark - G2D Mark	344 vs 97

Compare benchmarks

GPU 1: ATI Radeon HD 4770
GPU 2: ATI Radeon HD 2900 GT

PassMark - G3D Mark

GPU 1

GPU 2

898

292

PassMark - G2D Mark

GPU 1

GPU 2

344

GFXBench 4.0 - T-Rex (Frames)

GPU 1

GPU 2

8618

2648

GFXBench 4.0 - T-Rex (Fps)

GPU 1

GPU 2

8618

2648

Name	ATI Radeon HD 4770	ATI Radeon HD 2900 GT
PassMark - G3D Mark	898	292
PassMark - G2D Mark	97	344
GFXBench 4.0 - T-Rex (Frames)	8618	2648
GFXBench 4.0 - T-Rex (Fps)	8618	2648

Compare specifications (specs)

	ATI Radeon HD 4770	ATI Radeon HD 2900 GT
Essentials
Architecture	TeraScale	TeraScale
Code name	RV740	R600
Launch date	28 April 2009	6 November 2007
Launch price (MSRP)	$109
Place in performance rating	783	786
Type	Desktop	Desktop
Technical info
Core clock speed	750 MHz	601 MHz
Floating-point performance	960.0 gflops	288.48 gflops
Manufacturing process technology	40 nm	80 nm
Pipelines	640	240
Texture fill rate	24 GTexel / s	7.21 GTexel / s
Thermal Design Power (TDP)	80 Watt	150 Watt
Transistor count	826 million	720 million
Video outputs and ports
Display Connectors	2x DVI, 1x S-Video	2x DVI, 1x S-Video
Compatibility, dimensions and requirements
Interface	PCIe 2.0 x16	PCIe 1.0 x16
Length	203 mm
Supplementary power connectors	1x 6-pin	1x 8-pin
API support
DirectX	10.1	10.0
OpenGL	3.3	3.3
Memory
Maximum RAM amount	512 MB	256 MB
Memory bandwidth	51.2 GB / s	51.2 GB / s
Memory bus width	128 Bit	256 Bit
Memory clock speed	3200 MHz	1600 MHz
Memory type	GDDR5	GDDR3