Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 640 Galaxy GC 1GB Edition Radeon R7 240 2GB
Cyberpunk 2077 617% 786%
Hitman 3 833% 1053%
Assassins Creed: Valhalla 556% 711%
Resident Evil 8 617% 786%
FIFA 21 262% 347%
Grand Theft Auto VI 910% 1147%
Call of Duty: Black Ops Cold War 535% 684%
Genshin Impact 617% 786%
The Medium 795% 1006%
Far Cry 6 938% 1182%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 640 Galaxy GC 1GB Edition are noticeably better than the AMD Radeon R7 240 2GB.

The GT 640 has a 220 MHz higher core clock speed and 12 more Texture Mapping Units than the R7 240. This results in the GT 640 providing 15.8 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GT 640 has a 220 MHz higher core clock speed and 8 more Render Output Units than the R7 240. This results in the GT 640 providing 9.4 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The R7 240 was released over a year more recently than the GT 640, and so the R7 240 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GT 640.

The R7 240 has 1024 MB more video memory than the GT 640, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the R7 240 also has superior memory performance overall.

The R7 240 has 0.3 GB/sec greater memory bandwidth than the GT 640, which means that the memory performance of the R7 240 is marginally better than the GT 640.

The GeForce GT 640 Galaxy GC 1GB Edition has 384 Shader Processing Units and the Radeon R7 240 2GB has 320. However, the actual shader performance of the GT 640 is 365 and the actual shader performance of the R7 240 is 212. The GT 640 having 153 better shader performance and an altogether better performance when taking into account other relevant data means that the GT 640 delivers a slightly smoother and more efficient experience when processing graphical data than the R7 240.

The GeForce GT 640 Galaxy GC 1GB Edition requires 65 Watts to run and the Radeon R7 240 2GB requires 30 Watts. We would recommend a PSU with at least 350 Watts for the GT 640 and a PSU with at least 400 Watts for the R7 240. The GT 640 requires 35 Watts more than the R7 240 to run. The difference is significant enough that the GT 640 may have a slight adverse affect on your yearly electricity bills in comparison to the R7 240.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed950 MHzvs730 MHz
Boost Clock-vs780 MHz
ArchitectureKepler GK107-300-A2GCN 1.1 Oland PRO
OC Potential Poor vs Good
Driver Support Good vs Great
Release Date05 Jun 2012vs08 Oct 2013
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - vs green tick
6.4
1600x900
5.2
green tick vs
4.9
1920x1080
3.7
green tick vs
3.1
2560x1440
2.5
green tick vs
2.3
3840x2160
1.7
green tick vs
1.5

GPU Memory

Memory1024 MBvs2048 MB
Memory Speed891 MHzvs900 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeDDR3vsDDR3
Memory Bandwidth28.5GB/secvs28.8GB/sec
L2 Cache 256 KB vs green tick 512 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units384vs320
Actual Shader Performance18%vs10%
Technology28nmvs28nm
Texture Mapping Units32vs20
Texture Rate30.4 GTexel/svs14.6 GTexel/s
Render Output Units16vs8
Pixel Rate15.2 GPixel/svs5.8 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs1
DVI Connections2vs1
HDMI Connections0vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power65 Wattsvs30 Watts
Recommended PSU350 Watts & 26 Ampsvs400 Watts & 18 Amps

GPU Features

DirectX12.0vs12.0
Shader Model5.0vs5.0
Open GL4.5vs4.4
Open CL-vs-
Notebook GPUnono
SLI/Crossfirenovsno
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-3220 3.3GHzvsIntel Core i3-4130 3.4GHz
Recommended RAM8 GBvs4 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce GT 640 Galaxy GC 1GB Edition is a special edition of NVIDIA's Middle-Class GeForce GT 640, created by Galaxy.

Overclock: Central Unit
The Central Unit now runs at 950MHz, instead of 902MHz.

Overclock: Memory Clock
The Operating Memory Clock remains the same while the Frame Buffer was halved to 1GB which is adequate for the Graphics Card and will not decrease its performance.

Cooling Solution
The Cooling System remains the same.

Performance
Benchmarks indicate a 5% performance over the reference GeForce GT 640.
Note: This Graphics Card has 2 variants: one with DDR3 and another with GDDR5. This is the DDR3 Version.

Radeon R7 240 2GB offers a core codenamed Oland PRO and thus features 320 Shader Processing Units, 20 TMUs and 8 ROPs, on a 128-bit bus width of standard DDR3. While the central unit runs at 730MHz and goes up to 780MHz, in Turbo Mode, the memory clock operates at 900MHz.
With a rated board TDP of 30W, it requires no extra power connectors.

Compared to Radeon R7 250, its performance is significantly lower (over 25% slower), especially at higher resolutions due to the limited memory bandwidth. Still, the TDP is relatively low and so this card may be used on low end systems and offer a reasonable upgrade, when compared to integrated graphics.
Recommended CPU
Possible GPU Upgrades
-
GPU Variants
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