GeForce GT 640M 1 GB DDR3

Specifications of the NVIDIA GeForce GT 640M 1 GB DDR3 GPU

NVIDIA GeForce GT 640M 1 GB DDR3 mobile Graphics Processing Unit was introduced in March 2012. The GPU makes use of Kepler architecture, and it is produced on 28 nm technology. The card has 625 MHz graphics clock frequency. It also features 384 CUDA cores, 16 ROPs, along with 32 texture units. The GeForce GT 640M 1 GB DDR3 incorporates 1 GB of DDR3 memory. Since the memory operates at 900 MHz, and utilizes 128 bit bus, the effective memory bandwidth is 28.8 GB/s. The GPU supports PCI Express 3.0 interface. The maximum power draw of this model is 32 Watt.

More detailed specifications of the NVIDIA GeForce GT 640M 1 GB DDR3 card are available below.

Name / Brand / Architecture
Manufacturer:	NVIDIA
Model:	GeForce GT **0M 1 GB DDR3
Reference card?:	Yes
Target market segment:	Mobile
Die name:	GK107 GS
Architecture:	Kepler
Fabrication process:	28 nm
Transistors:	1.3 billion
Bus interface:	PCI-E 3.0 x 16
Launch date:	March 2012
Frequency
Graphics clock:	625 MHz
Memory specifications
Memory size:	** MB
Memory type:	DDR3
Memory clock:	900 MHz
Memory clock (effective):	1800 MHz
Memory interface width:	128-bit
Memory bandwidth:	28.8 GB/s
Cores / Texture
CUDA:	3.0
CUDA cores:	384
ROPs:	16
Texture units:	32
RAMDACs:	400 MHz
Electric characteristics
Maximum power draw:	32 W
Video features
Maximum digital resolution:	3840 x 2160
Maximum VGA resolution:	2048 x 1536
HDMI:	Yes
Performance
Pixel fill rate:	10 Gigapixels/s
Texture fill rate:	20 Gigatexels/s
Single presision compute power:	480 GFLOPS
Other features / Support
Other features:	3D Vision ? Direct Compute HDCP Optimus PhysX
Open CL support:	Yes
OpenGL support:	4.2
DirectX support:	11.1
Shader model:	5.0

Mobile GPU

Specifications of the NVIDIA GeForce GT 640M 1 GB DDR3 GPU

Name / Brand / Architecture

Frequency

Memory specifications

Cores / Texture

Electric characteristics

Video features

Performance

Other features / Support