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GeForce GT 640 1 GB 128-bit DDR3 (OEM)

Specifications of the NVIDIA GeForce GT 640 1 GB 128-bit DDR3 (OEM) GPU


NVIDIA GeForce GT 640 1 GB 128-bit DDR3 (OEM) desktop Graphics Processing Unit was introduced in April 2012. The GPU utilizes Kepler architecture, and it is fabricated on 28 nm manufacturing process. The card has graphics clocked at 797 MHz. It also sports 384 CUDA cores, 32 texture units, together with 16 ROPs. The GeForce GT 640 1 GB 128-bit DDR3 (OEM) comes with 1 GB of DDR3 memory. The memory uses 128 bit bus, and operates at 891 MHz. This allows the card to have 28.5 GB/s memory bandwidth. The GPU supports PCI Express 3.0 interface, and needs a single slot on the motherboard. The maximum power draw of this model is 75 Watt.

Below you will find detailed specs of the NVIDIA GeForce GT 640 1 GB 128-bit DDR3 (OEM) graphics unit.

Name / Brand / Architecture

Manufacturer:NVIDIA
Model:GeForce GT **0 1 GB 128-bit DDR3 (OEM)
Reference card?:Yes
Target market segment:Desktop (OEM)
Die name:GK 107
Architecture:Kepler
Fabrication process:28 nm
Transistors:1.3 billion
Bus interface:PCI-E 3.0 x 16
Launch date:April 2012

Frequency

Graphics clock:797 MHz

Memory specifications

Memory size:** MB
Memory type:DDR3
Memory clock:891 MHz
Memory clock (effective):1782 MHz
Memory interface width:128-bit
Memory bandwidth:28.5 GB/s

Cores / Texture

CUDA:2.1
CUDA cores:384
ROPs:16
Texture units:32
RAMDACs:400 MHz

Electric characteristics

Maximum GPU temp:102C
Maximum power draw:75 W

Video features

Multi-monitor:Up to 2 displays
Maximum DVI resolution:**0 x 1600
Maximum HDMI resolution:4096 x 2160 @ 24 Hz or 3840 x 2160 @ 30 Hz
Maximum VGA resolution:2048 x 1536
Anti-Aliasing technologies:FXAA
TXAA
HDMI:Yes
HDMI version:1.4a

Performance

Pixel fill rate:12.75 Gigapixels/s
Texture fill rate:25.5 Gigatexels/s
Single presision compute power:612.1 GFLOPS

External connectors

Standard display connectors:2 x Dual-Link DVI-I
HDMI
VGA
Audio input for HDMI:Yes

Dimensions

Size (length x height):5.71 inches (145 mm) x 2.731 inches (69 mm)
Width:Single Slot

Other features / Support

Other features:3D Vision  ? 
HDCP
PhysX
OpenGL support:4.2
DirectX support:11.1
Shader model:5.0
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