AMD Radeon HD 6620G vs NVIDIA GeForce 7900 GTX

Comparative analysis of AMD Radeon HD 6620G and NVIDIA GeForce 7900 GTX videocards for all known characteristics in the following categories: Essentials, Technical info, Compatibility, dimensions and requirements, API support, Memory, Video outputs and ports. Benchmark videocards performance analysis: Geekbench - OpenCL, GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps), PassMark - G2D Mark, PassMark - G3D Mark.

AMD Radeon HD 6620G

NVIDIA GeForce 7900 GTX

Differences

Reasons to consider the AMD Radeon HD 6620G

Videocard is newer: launch date 5 year(s) 3 month(s) later
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 32 nm vs 90 nm
3.3x better performance in GFXBench 4.0 - T-Rex (Frames): 3310 vs 1015
3.3x better performance in GFXBench 4.0 - T-Rex (Fps): 3310 vs 1015

Specifications (specs)
Launch date	15 June 2011 vs 9 March 2006
Manufacturing process technology	32 nm vs 90 nm
Benchmarks
GFXBench 4.0 - T-Rex (Frames)	3310 vs 1015
GFXBench 4.0 - T-Rex (Fps)	3310 vs 1015

Reasons to consider the NVIDIA GeForce 7900 GTX

Around 63% higher core clock speed: 650 MHz vs 400 MHz
Around 60% better performance in PassMark - G2D Mark: 165 vs 103
Around 14% better performance in PassMark - G3D Mark: 388 vs 341

Specifications (specs)
Core clock speed	650 MHz vs 400 MHz
Benchmarks
PassMark - G2D Mark	165 vs 103
PassMark - G3D Mark	388 vs 341

Compare benchmarks

GPU 1: AMD Radeon HD 6620G
GPU 2: NVIDIA GeForce 7900 GTX

GFXBench 4.0 - T-Rex (Frames)

GPU 1

GPU 2

3310

1015

GFXBench 4.0 - T-Rex (Fps)

GPU 1

GPU 2

3310

1015

PassMark - G2D Mark

GPU 1

GPU 2

103

165

PassMark - G3D Mark

GPU 1

GPU 2

341

388

Name	AMD Radeon HD 6620G	NVIDIA GeForce 7900 GTX
Geekbench - OpenCL	962
GFXBench 4.0 - Car Chase Offscreen (Frames)	790
GFXBench 4.0 - Car Chase Offscreen (Fps)	790
GFXBench 4.0 - Manhattan (Frames)	1755
GFXBench 4.0 - Manhattan (Fps)	1755
GFXBench 4.0 - T-Rex (Frames)	3310	1015
GFXBench 4.0 - T-Rex (Fps)	3310	1015
PassMark - G2D Mark	103	165
PassMark - G3D Mark	341	388

Compare specifications (specs)

	AMD Radeon HD 6620G	NVIDIA GeForce 7900 GTX
Essentials
Architecture	Terascale 2	Curie
Code name	Llano	G71
Launch date	15 June 2011	9 March 2006
Place in performance rating	1354	1357
Type	Laptop	Desktop
Technical info
Core clock speed	400 MHz	650 MHz
Manufacturing process technology	32 nm	90 nm
Pipelines	400
Transistor count	1000 Million	278 million
Texture fill rate		15.6 GTexel / s
Thermal Design Power (TDP)		84 Watt
Compatibility, dimensions and requirements
Laptop size	medium sized
Interface		PCIe 1.0 x16
Supplementary power connectors		1x 6-pin
API support
DirectX	11	9.0c
OpenGL		2.1
Memory
Shared memory	1
Maximum RAM amount		512 MB
Memory bandwidth		51.2 GB / s
Memory bus width		256 Bit
Memory clock speed		1600 MHz
Memory type		GDDR3
Video outputs and ports
Display Connectors		2x DVI, 1x S-Video