GeForce GT 640 Rev. 2 vs Radeon R9 M275X

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Aggregate performance score

We've compared Radeon R9 M275X with GeForce GT 640 Rev. 2, including specs and performance data.

R9 M275X
2014
4 GB GDDR5
3.66
+10.9%

R9 M275X outperforms 640 Rev. 2 by a moderate 11% based on our aggregate benchmark results.

Primary details

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

Place in the ranking777801
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data0.19
Power efficiencyno data5.21
ArchitectureGCN 1.0 (2012−2020)Kepler 2.0 (2013−2015)
GPU code nameVenusGK208
Market segmentLaptopDesktop
Release date28 January 2014 (12 years ago)29 May 2013 (13 years ago)
Launch price (MSRP)no data$89

Cost-effectiveness evaluation

The higher the ratio, the better. We use the manufacturer's recommended prices.

no data

Performance to price scatter graph

Currently popular graphics cards are shown for comparison.

Detailed specifications

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

Pipelines / CUDA cores640384
Compute units10no data
Core clock speed900 MHz1046 MHz
Boost clock speed925 MHzno data
Number of transistors1,500 million915 million
Manufacturing process technology28 nm28 nm
Power consumption (TDP)no data49 Watt
Texture fill rate37.0033.47
Floating-point processing power1.184 TFLOPS0.8033 TFLOPS
ROPs168
TMUs4032
L1 Cache160 KB32 KB
L2 Cache256 KB128 KB

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).

Bus supportPCIe 3.0 x16no data
InterfacePCIe 3.0 x16PCIe 2.0 x8
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 typeGDDR5GDDR5
Maximum RAM amount4 GB1 GB
Memory bus width128 Bit64 Bit
Memory clock speed1125 MHz1252 MHz
Memory bandwidth72 GB/s40.06 GB/s

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display ConnectorsNo outputs1x DVI, 1x HDMI, 1x VGA
Eyefinity+-
HDMI-+

Supported technologies

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

FreeSync+-
HD3D+-
PowerTune+-
DualGraphics+-
ZeroCore+-
Switchable graphics+-

API and SDK support

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

DirectXDirectX® 1112 (11_0)
Shader Model5.15.1
OpenGL4.44.6
OpenCLNot Listed1.2
Vulkan-1.1.126
Mantle+-
CUDA-3.5

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary


Performance score 3.66 3.30
Recency 28 January 2014 29 May 2013
Maximum RAM amount 4 GB 1 GB

R9 M275X has a 11% higher aggregate performance score, an age advantage of 7 months, and a 300% higher maximum VRAM amount.

The Radeon R9 M275X is our recommended choice as it beats the GeForce GT 640 Rev. 2 in performance tests.

Be aware that Radeon R9 M275X is a notebook graphics card while GeForce GT 640 Rev. 2 is a desktop one.

Other comparisons

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.


3.6 18 votes

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3.8 37 votes

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