Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Radeon R7 340 (OEM) GeForce GT 640
Hitman 3 674% 880%
Cyberpunk 2077 495% 653%
Assassins Creed: Valhalla 444% 589%
Resident Evil 8 495% 653%
FIFA 21 200% 280%
Grand Theft Auto VI 737% 960%
Call of Duty: Black Ops Cold War 426% 567%
Genshin Impact 495% 653%
Far Cry 6 761% 990%
The Medium 642% 840%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R7 340 (OEM) are noticeably better than the Nvidia GeForce GT 640.

The GeForce GT 640 has a 172 MHz higher core clock speed and 8 more Texture Mapping Units than the R7 340. This results in the GeForce GT 640 providing 11.4 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 GeForce GT 640 has a 172 MHz higher core clock speed and 8 more Render Output Units than the R7 340. This results in the GeForce 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 340 was released over a year more recently than the GeForce GT 640, and so the R7 340 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GeForce GT 640.

The Radeon R7 340 (OEM) and the GeForce GT 640 have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The R7 340 has 0.3 GB/sec greater memory bandwidth than the GeForce GT 640, which means that the memory performance of the R7 340 is marginally better than the GeForce GT 640.

Both the Radeon R7 340 (OEM) and the GeForce GT 640 have 384 Shader Processing Units. While the two GPUs have the same number of SPUs, the actual performance delivered by the GeForce GT 640 is 346 and by the R7 340 is 346. Knowing that the shader performance of the GeForce GT 640 is superior, it is not necessary to examine the GPUs' respective Texture and Pixel Fill Rates.

The Radeon R7 340 (OEM) requires 50 Watts to run and the GeForce GT 640 requires 65 Watts. We would recommend a PSU with at least 450 Watts for the R7 340 and a PSU with at least 350 Watts for the GeForce GT 640. The GeForce GT 640 requires 15 Watts more than the R7 340 to run. The difference is not significant enough for the GeForce GT 640 to have a noticeably larger impact on your yearly electricity bills than the R7 340.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed730 MHzvs902 MHz
Boost Clock780 MHzvs-
ArchitectureGCN 1.1 Oland XTKepler GK107-300-A2
OC Potential Good vs Fair
Driver Support Great vs Good
Release Date05 May 2015vs05 Jun 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
7
green tick vs
6.6
1600x900
5.4
green tick vs
5.1
1920x1080
4.2
green tick vs
3.5
2560x1440
2.8
green tick vs
2.5
3840x2160
1.9
green tick vs
1.7

GPU Memory

Memory2048 MBvs2048 MB
Memory Speed900 MHzvs891 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeDDR3vsDDR3
Memory Bandwidth28.8GB/secvs28.5GB/sec
L2 Cache 512 KB green tick vs 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units384vs384
Actual Shader Performance12%vs17%
Technology28nmvs28nm
Texture Mapping Units24vs32
Texture Rate17.5 GTexel/svs28.9 GTexel/s
Render Output Units8vs16
Pixel Rate5.8 GPixel/svs14.4 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections1vs1
DVI Connections1vs1
HDMI Connections1vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power50 Wattsvs65 Watts
Recommended PSU450 Watts & 33 Ampsvs350 Watts & 26 Amps

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-4460 3.2GHzvsIntel Core i3-3220 3.3GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon R5 340 (OEM) is an OEM only, Middle-Class Graphics Card based on the second revision of the Graphics Core Next Architecture.

Architecture
The GCN 1.1 revision of the Graphics Core Next Architecture adds new important technologies and is largely oriented for energy efficiency. New technologies such as PowerTune and TrueAudio are the biggest additions as well as DirectX 11.2 support.

GPU
It equips a GPU codenamed Oland XT previously used on Radeon R5 250. It offers 384 Shader Processing Units, 24 TMUs and 8 ROPs. The central unit runs at 730MHz and goes up to 780MHz, in Turbo Mode.

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 12.0 Support (11.0 Hardware Default) and support for Crossfire, Mantle, PowerTune, Eyefinity, ZeroCore, HD3D, App Acceleration and other technologies.

Power Consumption
With a rated board TDP of 50W, it requires at least a 450W PSU and relies entirely on the PCI slot for power.

Performance
Radeon R5 340 (OEM) is a direct rebrand of the fastest Radeon R7 240 Variant, which was never used by any manufacturer. Therefore, it offers exactly the same performance.

System Suggestions
We recommend a Strong Dual Core Processor (Intel Core i5 Quad Core/AMD FX Quad Core) and 8GB of RAM for a system with Radeon R5 350 (OEM).
Overview
GeForce GT 640 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 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 891MHz.

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 65W, it requires at least a 350W 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.
Recommended CPU
Possible GPU Upgrades
-
GPU Variants
-