GeForce GT 640 OEM Rebrand vs G 105M

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Primary details

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

Place in the ranking1416not rated
Place by popularitynot in top-100not in top-100
Power efficiency0.78no data
ArchitectureG9x (2007−2010)Fermi 2.0 (2010−2014)
GPU code nameN10M-GE1GF116
Market segmentLaptopDesktop
Release date8 January 2009 (15 years ago)24 April 2012 (12 years ago)

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 cores8144
Core clock speed640 MHz720 MHz
Number of transistorsno data1,170 million
Manufacturing process technology65 nm40 nm
Power consumption (TDP)14 Watt75 Watt
Texture fill rateno data17.28
Floating-point processing powerno data0.4147 TFLOPS
ROPsno data24
TMUsno data24

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).

Interfaceno dataPCIe 2.0 x16
Lengthno data145 mm
Widthno data1-slot
Supplementary power connectorsno dataNone

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 typeGDDR2, GDDR3DDR3
Maximum RAM amount512 MB1536 MB
Memory bus width64 Bit192 Bit
Memory clock speed700 MHz800 MHz
Memory bandwidthno data38.4 GB/s
Shared memory-no data

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 Connectorsno data2x DVI, 1x mini-HDMI
HDMI-+

API compatibility

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

DirectX1012 (11_0)
Shader Modelno data5.1
OpenGLno data4.6
OpenCLno data1.1
Vulkan-N/A
CUDA-2.1

Pros & cons summary


Recency 8 January 2009 24 April 2012
Maximum RAM amount 512 MB 1536 MB
Chip lithography 65 nm 40 nm
Power consumption (TDP) 14 Watt 75 Watt

G 105M has 435.7% lower power consumption.

GT 640 OEM Rebrand, on the other hand, has an age advantage of 3 years, a 200% higher maximum VRAM amount, and a 62.5% more advanced lithography process.

We couldn't decide between GeForce G 105M and GeForce GT 640 OEM Rebrand. We've got no test results to judge.

Be aware that GeForce G 105M is a notebook card while GeForce GT 640 OEM Rebrand is a desktop one.


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 G 105M
GeForce G 105M
NVIDIA GeForce GT 640 OEM Rebrand
GeForce GT 640 OEM Rebrand

Comparisons with similar GPUs

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Community ratings

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3 45 votes

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2.8 4 votes

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Questions & comments

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