GeForce GT 640 OEM Rebrand vs Radeon HD 8450G

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Primary details

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

Place in the ranking1128not rated
Place by popularitynot in top-100not in top-100
Power efficiency1.72no data
ArchitectureTeraScale 3 (2010−2013)Fermi 2.0 (2010−2014)
GPU code nameScrapperGF116
Market segmentLaptopDesktop
Release date23 May 2013 (11 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 cores192144
Core clock speed533 MHz720 MHz
Boost clock speed720 MHzno data
Number of transistors1,303 million1,170 million
Manufacturing process technology32 nm40 nm
Power consumption (TDP)35 Watt75 Watt
Texture fill rate8.64017.28
Floating-point processing power0.2765 TFLOPS0.4147 TFLOPS
ROPs424
TMUs1224

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).

Laptop sizemedium sizedno data
InterfaceIGPPCIe 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 typeSystem SharedDDR3
Maximum RAM amountSystem Shared1536 MB
Memory bus widthSystem Shared192 Bit
Memory clock speedSystem Shared800 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 outputs2x DVI, 1x mini-HDMI
HDMI-+

API compatibility

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

DirectX11.2 (11_0)12 (11_0)
Shader Model5.05.1
OpenGL4.44.6
OpenCL1.21.1
VulkanN/AN/A
CUDA-2.1

Pros & cons summary


Recency 23 May 2013 24 April 2012
Chip lithography 32 nm 40 nm
Power consumption (TDP) 35 Watt 75 Watt

HD 8450G has an age advantage of 1 year, a 25% more advanced lithography process, and 114.3% lower power consumption.

We couldn't decide between Radeon HD 8450G and GeForce GT 640 OEM Rebrand. We've got no test results to judge.

Be aware that Radeon HD 8450G 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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AMD Radeon HD 8450G
Radeon HD 8450G
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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4.3 18 votes

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2.8 4 votes

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Questions & comments

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