NVIDIA GeForce 800A vs NVIDIA GeForce GTX 645 OEM

Comparative analysis of NVIDIA GeForce 800A and NVIDIA GeForce GTX 645 OEM 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, Geekbench - OpenCL, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps).

NVIDIA GeForce 800A

NVIDIA GeForce GTX 645 OEM

Differences

Reasons to consider the NVIDIA GeForce 800A

Videocard is newer: launch date 10 month(s) later
4.3x lower typical power consumption: 15 Watt vs 65 Watt

Launch date	17 March 2014 vs 22 April 2013
Thermal Design Power (TDP)	15 Watt vs 65 Watt

Reasons to consider the NVIDIA GeForce GTX 645 OEM

Around 12% higher core clock speed: 824 MHz vs 738 MHz
6.7x more texture fill rate: 39.55 GTexel / s vs 5.904 GTexel / s
12x more pipelines: 576 vs 48
6.7x better floating-point performance: 949.2 gflops vs 141.7 gflops
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 28 nm vs 40 nm
2.2x more memory clock speed: 4000 MHz vs 1800 MHz
3.9x better performance in PassMark - G3D Mark: 1877 vs 477
2.6x better performance in PassMark - G2D Mark: 430 vs 165

Specifications (specs)
Core clock speed	824 MHz vs 738 MHz
Texture fill rate	39.55 GTexel / s vs 5.904 GTexel / s
Pipelines	576 vs 48
Floating-point performance	949.2 gflops vs 141.7 gflops
Manufacturing process technology	28 nm vs 40 nm
Memory clock speed	4000 MHz vs 1800 MHz
Benchmarks
PassMark - G3D Mark	1877 vs 477
PassMark - G2D Mark	430 vs 165

Compare benchmarks

GPU 1: NVIDIA GeForce 800A
GPU 2: NVIDIA GeForce GTX 645 OEM

PassMark - G3D Mark

GPU 1

GPU 2

477

1877

PassMark - G2D Mark

GPU 1

GPU 2

165

430

Name	NVIDIA GeForce 800A	NVIDIA GeForce GTX 645 OEM
PassMark - G3D Mark	477	1877
PassMark - G2D Mark	165	430
Geekbench - OpenCL		5235
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		13.806
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		546.51
CompuBench 1.5 Desktop - T-Rex (Frames/s)		1.535
CompuBench 1.5 Desktop - Video Composition (Frames/s)		27.524
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		38.664
GFXBench 4.0 - Car Chase Offscreen (Frames)		1435
GFXBench 4.0 - Manhattan (Frames)		3531
GFXBench 4.0 - T-Rex (Frames)		3300
GFXBench 4.0 - Car Chase Offscreen (Fps)		1435
GFXBench 4.0 - Manhattan (Fps)		3531
GFXBench 4.0 - T-Rex (Fps)		3300

Compare specifications (specs)

	NVIDIA GeForce 800A	NVIDIA GeForce GTX 645 OEM
Essentials
Architecture	Fermi 2.0	Kepler
Code name	GF119	GK106
Launch date	17 March 2014	22 April 2013
Place in performance rating	963	964
Type	Desktop	Desktop
Technical info
Core clock speed	738 MHz	824 MHz
Floating-point performance	141.7 gflops	949.2 gflops
Manufacturing process technology	40 nm	28 nm
Pipelines	48	576
Texture fill rate	5.904 GTexel / s	39.55 GTexel / s
Thermal Design Power (TDP)	15 Watt	65 Watt
Transistor count	292 million	2,540 million
Video outputs and ports
Display Connectors	No outputs	1x DVI, 1x HDMI, 1x DisplayPort
Compatibility, dimensions and requirements
Interface	PCIe 2.0 x16	PCIe 3.0 x16
Length		147 mm
Supplementary power connectors		None
API support
DirectX	12.0 (11_0)	12.0 (11_0)
OpenGL	4.6	4.6
Memory
Maximum RAM amount	1 GB	1 GB
Memory bandwidth	14.4 GB / s	64 GB / s
Memory bus width	64 Bit	128 Bit
Memory clock speed	1800 MHz	4000 MHz
Memory type	DDR3	GDDR5