NVIDIA GeForce GT 640 OEM videocard review

GeForce GT 640 OEM videocard released by NVIDIA; release date: 24 April 2012. The videocard is designed for desktop-computers and based on Kepler microarchitecture codenamed GK107.

Core clock speed - 797 MHz. Texture fill rate - 25.5 GTexel / s. Pipelines - 384. Floating-point performance - 612.1 gflops. Manufacturing process technology - 28 nm. Transistors count - 1,270 million. Power consumption (TDP) - 50 Watt.

Memory type: DDR3. Maximum RAM amount - 2 GB. Memory bus width - 128 Bit. Memory clock speed - 1782 MHz. Memory bandwidth - 28.51 GB / s.

Benchmarks

CompuBench 1.5 Desktop
Face Detection

Top 1 GPU

This GPU

939.363 mPixels/s

9.932 mPixels/s

CompuBench 1.5 Desktop
Ocean Surface Simulation

Top 1 GPU

This GPU

14101.507 Frames/s

254.345 Frames/s

CompuBench 1.5 Desktop
T-Rex

Top 1 GPU

This GPU

95.851 Frames/s

1.140 Frames/s

CompuBench 1.5 Desktop
Video Composition

Top 1 GPU

This GPU

530.303 Frames/s

13.613 Frames/s

CompuBench 1.5 Desktop
Bitcoin Mining

Top 1 GPU

This GPU

4429.590 mHash/s

15.320 mHash/s

GFXBench 4.0
Car Chase Offscreen

Top 1 GPU

This GPU

34770 Frames

1502 Frames

GFXBench 4.0
Manhattan

Top 1 GPU

This GPU

27823 Frames

2167 Frames

GFXBench 4.0
T-Rex

Top 1 GPU

This GPU

69225 Frames

3334 Frames

GFXBench 4.0
Car Chase Offscreen

Top 1 GPU

This GPU

34770.000 Fps

1502.000 Fps

GFXBench 4.0
Manhattan

Top 1 GPU

This GPU

27823.000 Fps

2167.000 Fps

GFXBench 4.0
T-Rex

Top 1 GPU

This GPU

69225.000 Fps

3334.000 Fps

Name	Value
CompuBench 1.5 Desktop - Face Detection	9.932 mPixels/s
CompuBench 1.5 Desktop - Ocean Surface Simulation	254.345 Frames/s
CompuBench 1.5 Desktop - T-Rex	1.140 Frames/s
CompuBench 1.5 Desktop - Video Composition	13.613 Frames/s
CompuBench 1.5 Desktop - Bitcoin Mining	15.320 mHash/s
GFXBench 4.0 - Car Chase Offscreen	1502 Frames
GFXBench 4.0 - Manhattan	2167 Frames
GFXBench 4.0 - T-Rex	3334 Frames
GFXBench 4.0 - Car Chase Offscreen	1502.000 Fps
GFXBench 4.0 - Manhattan	2167.000 Fps
GFXBench 4.0 - T-Rex	3334.000 Fps

Specifications (specs)

Essentials
Architecture	Kepler
Code name	GK107
Launch date	24 April 2012
Place in performance rating	1386
Type	Desktop
Technical info
Core clock speed	797 MHz
Floating-point performance	612.1 gflops
Manufacturing process technology	28 nm
Pipelines	384
Texture fill rate	25.5 GTexel / s
Thermal Design Power (TDP)	50 Watt
Transistor count	1,270 million

Video outputs and ports
Display Connectors	1x DVI, 1x HDMI, 1x DisplayPort
Compatibility, dimensions and requirements
Interface	PCIe 3.0 x16
Length	145 mm
Supplementary power connectors	None
API support
DirectX	12.0 (11_0)
OpenGL	4.6
Memory
Maximum RAM amount	2 GB
Memory bandwidth	28.51 GB / s
Memory bus width	128 Bit
Memory clock speed	1782 MHz
Memory type	DDR3