NVIDIA GeForce GTX 675MX Mac Edition vs NVIDIA GeForce GT 640

Comparative analysis of NVIDIA GeForce GTX 675MX Mac Edition and NVIDIA GeForce GT 640 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: CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), 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 - G3D Mark, PassMark - G2D Mark, Geekbench - OpenCL, 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), 3DMark Fire Strike - Graphics Score.

NVIDIA GeForce GTX 675MX Mac Edition

NVIDIA GeForce GT 640

Differences

Reasons to consider the NVIDIA GeForce GTX 675MX Mac Edition

Videocard is newer: launch date 9 month(s) later
2.8x more texture fill rate: 80.53 GTexel / s vs 28.86 GTexel / s
3.5x more pipelines: 1344 vs 384
2.8x better floating-point performance: 1,933 gflops vs 692.7 gflops
2.8x more memory clock speed: 5000 MHz vs 1782 MHz
Around 98% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 22.656 vs 11.448
2.7x better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 2.103 vs 0.792
2.7x better performance in GFXBench 4.0 - Manhattan (Frames): 6514 vs 2375
2x better performance in GFXBench 4.0 - T-Rex (Frames): 6700 vs 3328

Specifications (specs)
Launch date	1 April 2013 vs 5 June 2012
Texture fill rate	80.53 GTexel / s vs 28.86 GTexel / s
Pipelines	1344 vs 384
Floating-point performance	1,933 gflops vs 692.7 gflops
Memory clock speed	5000 MHz vs 1782 MHz
Benchmarks
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	22.656 vs 11.448
CompuBench 1.5 Desktop - T-Rex (Frames/s)	2.103 vs 0.792
GFXBench 4.0 - Manhattan (Frames)	6514 vs 2375
GFXBench 4.0 - T-Rex (Frames)	6700 vs 3328

Reasons to consider the NVIDIA GeForce GT 640

Around 25% higher core clock speed: 902 MHz vs 719 MHz
Around 54% lower typical power consumption: 65 Watt vs 100 Watt
2x more maximum memory size: 2 GB vs 1 GB
Around 38% better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 2134 vs 1543
81.8x better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 2134 vs 26.1
22.6x better performance in GFXBench 4.0 - Manhattan (Fps): 2375 vs 105.1
27.8x better performance in GFXBench 4.0 - T-Rex (Fps): 3328 vs 119.6

Specifications (specs)
Core clock speed	902 MHz vs 719 MHz
Thermal Design Power (TDP)	65 Watt vs 100 Watt
Maximum memory size	2 GB vs 1 GB
Benchmarks
GFXBench 4.0 - Car Chase Offscreen (Frames)	2134 vs 1543
GFXBench 4.0 - Car Chase Offscreen (Fps)	2134 vs 26.1
GFXBench 4.0 - Manhattan (Fps)	2375 vs 105.1
GFXBench 4.0 - T-Rex (Fps)	3328 vs 119.6

Compare benchmarks

GPU 1: NVIDIA GeForce GTX 675MX Mac Edition
GPU 2: NVIDIA GeForce GT 640

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

GPU 1

GPU 2

22.656

11.448

CompuBench 1.5 Desktop - T-Rex (Frames/s)

GPU 1

GPU 2

2.103

0.792

GFXBench 4.0 - Car Chase Offscreen (Frames)

GPU 1

GPU 2

1543

2134

GFXBench 4.0 - Car Chase Offscreen (Fps)

GPU 1

GPU 2

26.1

2134

GFXBench 4.0 - Manhattan (Frames)

GPU 1

GPU 2

6514

2375

GFXBench 4.0 - Manhattan (Fps)

GPU 1

GPU 2

105.1

2375

GFXBench 4.0 - T-Rex (Frames)

GPU 1

GPU 2

6700

3328

GFXBench 4.0 - T-Rex (Fps)

GPU 1

GPU 2

119.6

3328

Name	NVIDIA GeForce GTX 675MX Mac Edition	NVIDIA GeForce GT 640
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	22.656	11.448
CompuBench 1.5 Desktop - T-Rex (Frames/s)	2.103	0.792
GFXBench 4.0 - Car Chase Offscreen (Frames)	1543	2134
GFXBench 4.0 - Car Chase Offscreen (Fps)	26.1	2134
GFXBench 4.0 - Manhattan (Frames)	6514	2375
GFXBench 4.0 - Manhattan (Fps)	105.1	2375
GFXBench 4.0 - T-Rex (Frames)	6700	3328
GFXBench 4.0 - T-Rex (Fps)	119.6	3328
PassMark - G3D Mark		1173
PassMark - G2D Mark		295
Geekbench - OpenCL		3766
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		206.777
CompuBench 1.5 Desktop - Video Composition (Frames/s)		14.637
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		20.86
3DMark Fire Strike - Graphics Score		1565

Compare specifications (specs)

	NVIDIA GeForce GTX 675MX Mac Edition	NVIDIA GeForce GT 640
Essentials
Architecture	Kepler	Kepler
Code name	GK104	GK107
Launch date	1 April 2013	5 June 2012
Place in performance rating	1176	1178
Type	Desktop	Desktop
Launch price (MSRP)		$99
Price now		$59.99
Value for money (0-100)		25.25
Technical info
Core clock speed	719 MHz	902 MHz
Floating-point performance	1,933 gflops	692.7 gflops
Manufacturing process technology	28 nm	28 nm
Pipelines	1344	384
Texture fill rate	80.53 GTexel / s	28.86 GTexel / s
Thermal Design Power (TDP)	100 Watt	65 Watt
Transistor count	3,540 million	1,270 million
Video outputs and ports
Display Connectors	No outputs	1x DVI, 1x HDMI, 1x DisplayPort
Compatibility, dimensions and requirements
Interface	PCIe 3.0 x16	PCIe 3.0 x16
Length		145 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	2 GB
Memory bandwidth	160.0 GB / s	28.51 GB / s
Memory bus width	256 Bit	128 Bit
Memory clock speed	5000 MHz	1782 MHz
Memory type	GDDR5	DDR3