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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 640 v2 Radeon R7 240 2GB
Hitman 3 819% 1053%
Cyberpunk 2077 606% 786%
Assassins Creed: Valhalla 546% 711%
Resident Evil 8 606% 786%
FIFA 21 256% 347%
Grand Theft Auto VI 894% 1147%
Call of Duty: Black Ops Cold War 525% 684%
Genshin Impact 606% 786%
Far Cry 6 922% 1182%
The Medium 781% 1006%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 640 v2 are noticeably better than the AMD Radeon R7 240 2GB.

The GT 640 has a 172 MHz higher core clock speed and 12 more Texture Mapping Units than the R7 240. This results in the GT 640 providing 14.3 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 172 MHz higher core clock speed and 8 more Render Output Units than the R7 240. This results in the GT 640 providing 8.6 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. However, overall, the GT 640 has superior memory performance.

The GT 640 has 11.2 GB/sec greater memory bandwidth than the R7 240, which means that the memory performance of the GT 640 is slightly better than the R7 240.

The GeForce GT 640 v2 has 384 Shader Processing Units and the Radeon R7 240 2GB has 320. However, the actual shader performance of the GT 640 is 346 and the actual shader performance of the R7 240 is 212. The GT 640 having 134 better shader performance and an altogether better performance when taking into account other relevant data means that the GT 640 delivers a noticeably smoother and more efficient experience when processing graphical data than the R7 240.

The GeForce GT 640 v2 requires 49 Watts to run and the Radeon R7 240 2GB requires 30 Watts. We would recommend a PSU with at least 300 Watts for the GT 640 and a PSU with at least 400 Watts for the R7 240. The GT 640 requires 19 Watts more than the R7 240 to run. The difference is not significant enough for the GT 640 to have a noticeably larger impact on your yearly electricity bills than the R7 240.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed902 MHzvs730 MHz
Boost Clock-vs780 MHz
ArchitectureKepler GK107-300-A2GCN 1.1 Oland PRO
OC Potential Fair vs Good
Driver Support Good vs Great
Release Date05 Jun 2012vs08 Oct 2013
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
6.6
green tick vs
6.4
1600x900
5.1
green tick vs
4.9
1920x1080
3.7
green tick vs
3.1
2560x1440
2.5
green tick vs
2.3
3840x2160
1.8
green tick vs
1.5

GPU Memory

Memory1024 MBvs2048 MB
Memory Speed1250 MHzvs900 MHz
Memory Bus64 Bitvs128 Bit
Memory TypeGDDR5vsDDR3
Memory Bandwidth40GB/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 Performance17%vs10%
Technology28nmvs28nm
Texture Mapping Units32vs20
Texture Rate28.9 GTexel/svs14.6 GTexel/s
Render Output Units16vs8
Pixel Rate14.4 GPixel/svs5.8 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections1vs1
DVI Connections1vs1
HDMI Connections1vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power49 Wattsvs30 Watts
Recommended PSU300 Watts & 22 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 v2 is a Middle-Class 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 GK107-300-A2 which has 2 Stream Multiprocessor activated and thus offers 384 Shader Processing Units, 32 TMUs and 16 ROPs. The Central Unit is clocked at 902MHz.

Memory
The GPU accesses a 1GB frame buffer of fast GDDR5, through a 64-bit memory interface. The size of the frame buffer is adequate. The Memory Clock Operates at 1250MHz.

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 49W, it requires at least a 300W PSU and it relies entirely on the PCI Slot for power, meaning no extra connectors are required.

Performance
Gaming benchmarks put its performance on average with Radeon HD 6670.

System Suggestions
We recommend a Modest Processor (Intel Core i3) and 8GB of RAM for a system with GeForce GT 640 v2.
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
-