Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 550M 2GB GeForce GT 640M
Cyberpunk 2077 1122% 769%
Hitman 3 1489% 1031%
Assassins Creed: Valhalla 1017% 695%
Resident Evil 8 1122% 769%
FIFA 21 516% 338%
Grand Theft Auto VI 1619% 1123%
Call of Duty: Black Ops Cold War 981% 669%
The Medium 1424% 985%
Genshin Impact 1122% 769%
Far Cry 6 1668% 1158%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 640M are significantly better than the Nvidia GeForce GT 550M 2GB.

The GT 550M has a 115 MHz higher core clock speed than the GeForce GT 640M, but the GeForce GT 640M has 16 more Texture Mapping Units than the GT 550M. As a result, the GeForce GT 640M exhibits a 8.2 GTexel/s better Texture Fill Rate than the GT 550M. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GT 550M has a 115 MHz higher core clock speed than the GeForce GT 640M, but the GeForce GT 640M has 12 more Render Output Units than the GT 550M. As a result, the GeForce GT 640M exhibits a 7 GPixel/s better Pixel Fill Rate than the GT 550M. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GeForce GT 640M was released over a year more recently than the GT 550M, and so the GeForce GT 640M is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GT 550M.

The GeForce GT 550M 2GB and the GeForce GT 640M have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The memory bandwidth of the GeForce GT 550M 2GB and the GeForce GT 640M are the same, which means the GT 550M and the GeForce GT 640M have equal limitations when it comes to graphical data transfer.

The GeForce GT 550M 2GB has 96 Shader Processing Units and the GeForce GT 640M has 384. However, the actual shader performance of the GT 550M is 142 and the actual shader performance of the GeForce GT 640M is 240. The GeForce GT 640M having 98 better shader performance and an altogether better performance when taking into account other relevant data means that the GeForce GT 640M delivers a marginally smoother and more efficient experience when processing graphical data than the GT 550M.

The GeForce GT 640M transistor size technology is 12 nm (nanometers) smaller than the GT 550M. This means that the GeForce GT 640M is expected to run slightly cooler and achieve higher clock frequencies than the GT 550M.

The GeForce GT 550M 2GB requires 35 Watts to run and the GeForce GT 640M requires 32 Watts. The GT 550M requires 3 Watts more than the GeForce GT 640M to run. The difference is not significant enough for the GT 550M to have a noticeably larger impact on your yearly electricity bills than the GeForce GT 640M.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed740 MHzvs625 MHz
Boost Clock-vs-
ArchitectureFermi GF108Kepler GK107
OC Potential Poor vs Good
Driver Support Poor vs Good
Release Date06 Jan 2011vs22 Mar 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
5.3
vs green tick
5.7
1600x900
3.9
vs green tick
4.2
1920x1080
2.6
vs green tick
3.2
2560x1440
1.9
vs green tick
2.3
3840x2160 - vs green tick
1.5

GPU Memory

Memory2048 MBvs2048 MB
Memory Speed900 MHzvs900 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeDDR3vsDDR3
Memory Bandwidth28.8GB/secvs28.8GB/sec
L2 Cache 256 KB green tick vs green tick 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units96vs384
Actual Shader Performance7%vs12%
Technology40nmvs28nm
Texture Mapping Units16vs32
Texture Rate11.8 GTexel/svs20 GTexel/s
Render Output Units4vs16
Pixel Rate3 GPixel/svs10 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections0vs1
DVI Connections0vs1
HDMI Connections0vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power35 Wattsvs32 Watts
Recommended PSU--

GPU Features

DirectX12.0vs12.0
Shader Model5.0vs5.0
Open GL4.5vs4.5
Open CL-vs-
Notebook GPUyesyes
SLI/Crossfirenovsno
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-2330M 2.2GHzvsIntel Core i5-3210M 2.5GHz
Recommended RAM4 GBvs6 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce GT 550M 2GB is a middle-class Mobile Graphics Card based on the first revision of the Fermi Architecture.

Architecture
The Fermi Architecture is manufactured with a 40nm technology and uses a technique known as Hot Clocking: The Shaders are clocked twice as fast as the Central Unit. While this leads to a reasonable performance boost, it causes enormous amounts of energy dissipation, leading, ultimately, to a significantly higher operating temperature.
Fermi is also the first GPU architecture with fully cached memory access which increases memory performance.

GPU
It equips a GPU Codenamed GF108 which has 2 Stream Multiprocessors activated and thus offers 96 Shader Processing Units, 16 TMUs and 4 ROPs. The Central Unit is clocked at 740MHz.

Memory
The GPU accesses a 2GB frame buffer of DDR3, through a 128-bit memory interface. The size of the frame buffer is exaggerated and in no way benefits the GPU. The Memory Clock Operates at 900MHz.

Features
DirectX 11.0 Support (11.0 Hardware Default) and support for Optimus, 3D Vision Surround, PhysX, Realtime Raytracing and other technologies

Power Consumption
With a rated board TDP of 35W, it is suited for 15" or larger laptops.

Performance
Gaming benchmarks put its performance only slightly above a desktop GeForce GT 430.

System Suggestions
We recommend a modest processor (Intel Core i3 Mobile) and 4GB of RAM for a system with GeForce GT 550M 2GB.
Overview
GeForce GT 640M is a Middle-Class Mobile Graphics Card based on the first revision of the Kepler Architecture.

Architecture
The Kepler Architecture was NVIDIA's big step to power efficiency. Each Stream Multiprocessor (SMX) now hosts 192 Shader Processing Units - against the 48 of older Fermi Architecture, and has been redesigned being now clocked at the same speed of the Central Unit. This means they are more energy efficient and will consequently lead to cooler operating temperatures. However, it also means they are weaker. It can be said that one Fermi SMX is as fast as 2 Kepler SMXs.
Additionally, and not available in all GPUs, Kepler also introduced the Boost Clock Feature. The Boost Clock is an even higher Clock Speed activated when in gaming mode and becomes the effective speed of the GPU.

GPU
It equips a GPU Codenamed GK107 which has 2 Stream Multiprocessors activated and thus offers 384 Shader Processing Units, 32 TMUs and 16 ROPs. The Central Unit is clocked at 625MHz.

Memory
The GPU accesses a 2GB frame buffer of DDR3, through a 128-bit memory interface. The size of the frame buffer is exaggerated and in no way benefits the GPU. The Memory Clock Operates at 900MHz.

Features
DirectX 11.0 Support (11.0 Hardware Default) and support for Optimus, CUDA, OpenCL, DirectCompute, 3D Vision Surround, PhysX, Realtime Raytracing and other technologies

Power Consumption
With a rated board TDP of 33W, it is suited for small laptops.

Performance
Gaming benchmarks indicate its performance is on average with the older GeForce GTX 465M.

System Suggestions
We recommend a modest processor (Intel Core i3 Mobile) and 4GB of RAM for a system with GeForce GT 640M.
Recommended CPU
Possible GPU Upgrades
N/A
N/A
GPU Variants
-
-