ATI Radeon HD 4850 vs NVIDIA GeForce 7900 GT

Comparative analysis of ATI Radeon HD 4850 and NVIDIA GeForce 7900 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 4850

NVIDIA GeForce 7900 GT

Differences

Reasons to consider the ATI Radeon HD 4850

Videocard is newer: launch date 2 year(s) 3 month(s) later
Around 39% higher core clock speed: 625 MHz vs 450 MHz
2.3x more texture fill rate: 25 GTexel / s vs 10.8 GTexel / s
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 55 nm vs 90 nm
2x more maximum memory size: 512 MB vs 256 MB
Around 50% higher memory clock speed: 1986 MHz vs 1320 MHz
3.6x better performance in PassMark - G3D Mark: 941 vs 258

Specifications (specs)
Launch date	25 June 2008 vs 9 March 2006
Core clock speed	625 MHz vs 450 MHz
Texture fill rate	25 GTexel / s vs 10.8 GTexel / s
Manufacturing process technology	55 nm vs 90 nm
Maximum memory size	512 MB vs 256 MB
Memory clock speed	1986 MHz vs 1320 MHz
Benchmarks
PassMark - G3D Mark	941 vs 258

Reasons to consider the NVIDIA GeForce 7900 GT

2.3x lower typical power consumption: 48 Watt vs 110 Watt
2.1x better performance in PassMark - G2D Mark: 160 vs 75

Specifications (specs)
Thermal Design Power (TDP)	48 Watt vs 110 Watt
Benchmarks
PassMark - G2D Mark	160 vs 75

Compare benchmarks

GPU 1: ATI Radeon HD 4850
GPU 2: NVIDIA GeForce 7900 GT

PassMark - G3D Mark

GPU 1

GPU 2

941

258

PassMark - G2D Mark

GPU 1

GPU 2

160

Name	ATI Radeon HD 4850	NVIDIA GeForce 7900 GT
PassMark - G3D Mark	941	258
PassMark - G2D Mark	75	160
GFXBench 4.0 - T-Rex (Frames)	3344
GFXBench 4.0 - T-Rex (Fps)	3344

Compare specifications (specs)

	ATI Radeon HD 4850	NVIDIA GeForce 7900 GT
Essentials
Architecture	TeraScale	Curie
Code name	RV770	G71
Launch date	25 June 2008	9 March 2006
Launch price (MSRP)	$199
Place in performance rating	1288	1050
Type	Desktop	Desktop
Technical info
Core clock speed	625 MHz	450 MHz
Floating-point performance	1,000.0 gflops
Manufacturing process technology	55 nm	90 nm
Pipelines	800
Texture fill rate	25 GTexel / s	10.8 GTexel / s
Thermal Design Power (TDP)	110 Watt	48 Watt
Transistor count	956 million	278 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	246 mm
Supplementary power connectors	1x 6-pin	1x 6-pin
API support
DirectX	10.1	9.0c
OpenGL	3.3	2.1
Memory
Maximum RAM amount	512 MB	256 MB
Memory bandwidth	63.6 GB / s	42.2 GB / s
Memory bus width	256 Bit	256 Bit
Memory clock speed	1986 MHz	1320 MHz
Memory type	GDDR3	GDDR3