NVIDIA GeForce GT 645 OEM vs ATI Radeon HD 3850 X2

Comparative analysis of NVIDIA GeForce GT 645 OEM and ATI Radeon HD 3850 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 - G2D Mark, PassMark - G3D Mark, GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps).

NVIDIA GeForce GT 645 OEM

ATI Radeon HD 3850 X2

Differences

Reasons to consider the NVIDIA GeForce GT 645 OEM

Videocard is newer: launch date 4 year(s) 0 month(s) later
Around 16% higher core clock speed: 776 MHz vs 669 MHz
Around 4% better floating-point performance: 894.0 gflops vs 2x 428.2 gflops
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 40 nm vs 55 nm
Around 37% lower typical power consumption: 102 Watt vs 140 Watt
2.3x more memory clock speed: 3828 MHz vs 1656 MHz
Around 5% better performance in PassMark - G2D Mark: 443 vs 422
2.4x better performance in PassMark - G3D Mark: 2006 vs 822

Specifications (specs)
Launch date	24 April 2012 vs 4 April 2008
Core clock speed	776 MHz vs 669 MHz
Floating-point performance	894.0 gflops vs 2x 428.2 gflops
Manufacturing process technology	40 nm vs 55 nm
Thermal Design Power (TDP)	102 Watt vs 140 Watt
Memory clock speed	3828 MHz vs 1656 MHz
Benchmarks
PassMark - G2D Mark	443 vs 422
PassMark - G3D Mark	2006 vs 822

Reasons to consider the ATI Radeon HD 3850 X2

5.7x more texture fill rate: 2x 10.7 GTexel / s billion / sec vs 37.2 GTexel / s
2.2x more pipelines: 2x 320 vs 288

Texture fill rate	2x 10.7 GTexel / s billion / sec vs 37.2 GTexel / s
Pipelines	2x 320 vs 288

Compare benchmarks

GPU 1: NVIDIA GeForce GT 645 OEM
GPU 2: ATI Radeon HD 3850 X2

PassMark - G2D Mark

GPU 1

GPU 2

443

422

PassMark - G3D Mark

GPU 1

GPU 2

2006

822

Name	NVIDIA GeForce GT 645 OEM	ATI Radeon HD 3850 X2
PassMark - G2D Mark	443	422
PassMark - G3D Mark	2006	822
GFXBench 4.0 - T-Rex (Frames)	1914
GFXBench 4.0 - T-Rex (Fps)	1914

Compare specifications (specs)

	NVIDIA GeForce GT 645 OEM	ATI Radeon HD 3850 X2
Essentials
Architecture	Fermi 2.0	TeraScale
Code name	GF114	RV670
Launch date	24 April 2012	4 April 2008
Place in performance rating	557	344
Type	Desktop	Desktop
Launch price (MSRP)		$349
Technical info
Core clock speed	776 MHz	669 MHz
Floating-point performance	894.0 gflops	2x 428.2 gflops
Manufacturing process technology	40 nm	55 nm
Pipelines	288	2x 320
Texture fill rate	37.2 GTexel / s	2x 10.7 GTexel / s billion / sec
Thermal Design Power (TDP)	102 Watt	140 Watt
Transistor count	1,950 million	666 million
Video outputs and ports
Display Connectors	2x DVI, 1x mini-HDMI	2x DVI, 1x S-Video
Compatibility, dimensions and requirements
Interface	PCIe 2.0 x16	PCIe 2.0 x16
Length	210 mm	267 mm
API support
DirectX	12.0 (11_0)	10.0
OpenGL	4.6	3.3
Memory
Maximum RAM amount	1 GB	2x 512 MB
Memory bandwidth	91.9 GB / s	2x 53.0 GB / s
Memory bus width	192 Bit	2x 256 Bit
Memory clock speed	3828 MHz	1656 MHz
Memory type	GDDR5	GDDR3