NVIDIA GeForce 800M vs NVIDIA GeForce GT 640M Mac Edition

Comparative analysis of NVIDIA GeForce 800M and NVIDIA GeForce GT 640M Mac Edition videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies. 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 - 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), CompuBench 1.5 Desktop - T-Rex (Frames/s).

NVIDIA GeForce 800M

NVIDIA GeForce GT 640M Mac Edition

Differences

Reasons to consider the NVIDIA GeForce 800M

Videocard is newer: launch date 1 year(s) 1 month(s) later
2.1x lower typical power consumption: 15 Watt vs 32 Watt
2x more maximum memory size: 1 GB vs 512 MB
Around 21% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 15.218 vs 12.554
24.3x better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 703 vs 28.9
23.3x better performance in GFXBench 4.0 - Manhattan (Fps): 1123 vs 48.1
16x better performance in GFXBench 4.0 - T-Rex (Fps): 1601 vs 99.8

Specifications (specs)
Launch date	17 March 2014 vs 3 February 2013
Thermal Design Power (TDP)	15 Watt vs 32 Watt
Maximum memory size	1 GB vs 512 MB
Benchmarks
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	15.218 vs 12.554
GFXBench 4.0 - Car Chase Offscreen (Fps)	703 vs 28.9
GFXBench 4.0 - Manhattan (Fps)	1123 vs 48.1
GFXBench 4.0 - T-Rex (Fps)	1601 vs 99.8

Reasons to consider the NVIDIA GeForce GT 640M Mac Edition

Around 1% higher core clock speed: 745 MHz vs 738 MHz
4x more texture fill rate: 23.84 GTexel / s vs 5.904 GTexel / s
8x more pipelines: 384 vs 48
4x better floating-point performance: 572.2 gflops vs 141.7 gflops
2.8x more memory clock speed: 5000 MHz vs 1800 MHz
Around 34% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 6.577 vs 4.91
2.1x better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 226.218 vs 109.13
Around 65% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 11.947 vs 7.249
2.4x better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 1706 vs 703
2.7x better performance in GFXBench 4.0 - Manhattan (Frames): 2983 vs 1123
3.5x better performance in GFXBench 4.0 - T-Rex (Frames): 5586 vs 1601

Specifications (specs)
Core clock speed	745 MHz vs 738 MHz
Texture fill rate	23.84 GTexel / s vs 5.904 GTexel / s
Pipelines	384 vs 48
Floating-point performance	572.2 gflops vs 141.7 gflops
Memory clock speed	5000 MHz vs 1800 MHz
Benchmarks
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	6.577 vs 4.91
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	226.218 vs 109.13
CompuBench 1.5 Desktop - Video Composition (Frames/s)	11.947 vs 7.249
GFXBench 4.0 - Car Chase Offscreen (Frames)	1706 vs 703
GFXBench 4.0 - Manhattan (Frames)	2983 vs 1123
GFXBench 4.0 - T-Rex (Frames)	5586 vs 1601

Compare benchmarks

GPU 1: NVIDIA GeForce 800M
GPU 2: NVIDIA GeForce GT 640M Mac Edition

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

GPU 1

GPU 2

4.91

6.577

CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)

GPU 1

GPU 2

109.13

226.218

CompuBench 1.5 Desktop - Video Composition (Frames/s)

GPU 1

GPU 2

7.249

11.947

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

GPU 1

GPU 2

15.218

12.554

GFXBench 4.0 - Car Chase Offscreen (Frames)

GPU 1

GPU 2

703

1706

GFXBench 4.0 - Manhattan (Frames)

GPU 1

GPU 2

1123

2983

GFXBench 4.0 - T-Rex (Frames)

GPU 1

GPU 2

1601

5586

GFXBench 4.0 - Car Chase Offscreen (Fps)

GPU 1

GPU 2

703

28.9

GFXBench 4.0 - Manhattan (Fps)

GPU 1

GPU 2

1123

48.1

GFXBench 4.0 - T-Rex (Fps)

GPU 1

GPU 2

1601

99.8

Name	NVIDIA GeForce 800M	NVIDIA GeForce GT 640M Mac Edition
PassMark - G3D Mark	477
PassMark - G2D Mark	195
Geekbench - OpenCL	1303
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	4.91	6.577
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	109.13	226.218
CompuBench 1.5 Desktop - Video Composition (Frames/s)	7.249	11.947
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	15.218	12.554
GFXBench 4.0 - Car Chase Offscreen (Frames)	703	1706
GFXBench 4.0 - Manhattan (Frames)	1123	2983
GFXBench 4.0 - T-Rex (Frames)	1601	5586
GFXBench 4.0 - Car Chase Offscreen (Fps)	703	28.9
GFXBench 4.0 - Manhattan (Fps)	1123	48.1
GFXBench 4.0 - T-Rex (Fps)	1601	99.8
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.559

Compare specifications (specs)

	NVIDIA GeForce 800M	NVIDIA GeForce GT 640M Mac Edition
Essentials
Architecture	Fermi 2.0	Kepler
Code name	GF117	GK107
Launch date	17 March 2014	3 February 2013
Place in performance rating	1511	1512
Type	Desktop	Desktop
Technical info
Core clock speed	738 MHz	745 MHz
Floating-point performance	141.7 gflops	572.2 gflops
Manufacturing process technology	28 nm	28 nm
Pipelines	48	384
Texture fill rate	5.904 GTexel / s	23.84 GTexel / s
Thermal Design Power (TDP)	15 Watt	32 Watt
Transistor count	585 million	1,270 million
Video outputs and ports
Display Connectors	No outputs	No outputs
Compatibility, dimensions and requirements
Bus support	PCI Express 3.0
Interface	PCIe 2.0 x16	PCIe 3.0 x16
API support
DirectX	12.0 (11_0)	12.0 (11_0)
OpenGL	4.5	4.6
Memory
Maximum RAM amount	1 GB	512 MB
Memory bandwidth	14.4 GB / s	40 GB / s
Memory bus width	64 Bit	64 Bit
Memory clock speed	1800 MHz	5000 MHz
Memory type	DDR3	GDDR5
Technologies
CUDA
GameWorks
GPU Boost
Optimus