GeForce GT 640 OEM Rebrand vs GT 640 Rev. 2

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Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking722not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.19no data
Power efficiency5.05no data
ArchitectureKepler 2.0 (2013−2015)Fermi 2.0 (2010−2014)
GPU code nameGK208GF116
Market segmentDesktopDesktop
Release date29 May 2013 (11 years ago)24 April 2012 (12 years ago)
Launch price (MSRP)$89 no data

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores384144
Core clock speed1046 MHz720 MHz
Number of transistors915 million1,170 million
Manufacturing process technology28 nm40 nm
Power consumption (TDP)49 Watt75 Watt
Texture fill rate33.4717.28
Floating-point processing power0.8033 TFLOPS0.4147 TFLOPS
ROPs824
TMUs3224

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

InterfacePCIe 2.0 x8PCIe 2.0 x16
Length145 mm145 mm
Width1-slot1-slot
Supplementary power connectorsNoneNone

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeGDDR5DDR3
Maximum RAM amount1 GB1536 MB
Memory bus width64 Bit192 Bit
Memory clock speed1252 MHz800 MHz
Memory bandwidth40.06 GB/s38.4 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors1x DVI, 1x HDMI, 1x VGA2x DVI, 1x mini-HDMI
HDMI++

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX12 (11_0)12 (11_0)
Shader Model5.15.1
OpenGL4.64.6
OpenCL1.21.1
Vulkan1.1.126N/A
CUDA3.52.1

Pros & cons summary


Recency 29 May 2013 24 April 2012
Maximum RAM amount 1 GB 1536 MB
Chip lithography 28 nm 40 nm
Power consumption (TDP) 49 Watt 75 Watt

GT 640 Rev. 2 has an age advantage of 1 year, a 42.9% more advanced lithography process, and 53.1% lower power consumption.

GT 640 OEM Rebrand, on the other hand, has a 50% higher maximum VRAM amount.

We couldn't decide between GeForce GT 640 Rev. 2 and GeForce GT 640 OEM Rebrand. We've got no test results to judge.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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NVIDIA GeForce GT 640 Rev. 2
GeForce GT 640 Rev. 2
NVIDIA GeForce GT 640 OEM Rebrand
GeForce GT 640 OEM Rebrand

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Community ratings

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3.9 27 votes

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Questions & comments

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