Radeon RX 7950 XT vs GeForce GT 640M

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Primary details

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

Place in the ranking843not rated
Place by popularitynot in top-100not in top-100
Power efficiency5.14no data
ArchitectureKepler (2012−2018)RDNA 3.0 (2022−2024)
GPU code nameGK107Navi 31
Market segmentLaptopDesktop
Release date22 March 2012 (12 years ago)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 cores3845376
Core clock speedUp to 625 MHz2000 MHz
Boost clock speed645 MHz3000 MHz
Number of transistors1,270 million57,700 million
Manufacturing process technology28 nm5 nm
Power consumption (TDP)32 Watt300 Watt
Texture fill rate20.001,008
Floating-point processing power0.48 TFLOPS64.51 TFLOPS
ROPs16192
TMUs32336
Ray Tracing Coresno data84

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
Bus supportPCI Express 2.0, PCI Express 3.0no data
InterfacePCIe 3.0 x16PCIe 4.0 x16
Lengthno data276 mm
Widthno data2-slot
Supplementary power connectorsno data2x 8-pin

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 typeDDR3\GDDR5GDDR6
Maximum RAM amount2 GB20 GB
Memory bus width128bit320 Bit
Memory clock speed900 MHz2500 MHz
Memory bandwidthUp to 64.0 GB/s800.0 GB/s
Shared memory--

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 outputs1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C
HDMI++
HDCP+-
Maximum VGA resolutionUp to 2048x1536no data

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

3D Blu-Ray+-
Optimus+-

API compatibility

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

DirectX12 API12 Ultimate (12_2)
Shader Model5.16.7
OpenGL4.54.6
OpenCL1.12.2
Vulkan1.1.1261.3
CUDA+-

Pros & cons summary


Maximum RAM amount 2 GB 20 GB
Chip lithography 28 nm 5 nm
Power consumption (TDP) 32 Watt 300 Watt

GT 640M has 837.5% lower power consumption.

RX 7950 XT, on the other hand, has a 900% higher maximum VRAM amount, and a 460% more advanced lithography process.

We couldn't decide between GeForce GT 640M and Radeon RX 7950 XT. We've got no test results to judge.

Be aware that GeForce GT 640M is a notebook card while Radeon RX 7950 XT 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 GT 640M
GeForce GT 640M
AMD Radeon RX 7950 XT
Radeon RX 7950 XT

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


3.7 312 votes

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3.3 49 votes

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Questions & comments

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