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Gaming Performance Comparison

Recommended System Requirements
Game Radeon R7 250 v2 XFX Core 1GB Edition GeForce GT 640
Cyberpunk 2077 504% 653%
Assassins Creed: Valhalla 453% 589%
Call of Duty: Black Ops Cold War 435% 567%
Hitman 3 686% 880%
Grand Theft Auto VI 750% 960%
FIFA 21 205% 280%
Far Cry 6 774% 990%
Genshin Impact 504% 653%
World of Warcraft: Shadowlands 766% 980%
Watch Dogs Legion 483% 627%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R7 250 v2 XFX Core 1GB Edition are noticeably better than the Nvidia GeForce GT 640.

The R7 250 has a 98 MHz higher core clock speed than the GeForce GT 640, but the GeForce GT 640 has 8 more Texture Mapping Units than the R7 250. As a result, the GeForce GT 640 exhibits a 4.9 GTexel/s better Texture Fill Rate than the R7 250. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The R7 250 has a 98 MHz higher core clock speed than the GeForce GT 640, but the GeForce GT 640 has 8 more Render Output Units than the R7 250. As a result, the GeForce GT 640 exhibits a 6.4 GPixel/s better Pixel Fill Rate than the R7 250. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The R7 250 was released over a year more recently than the GeForce GT 640, and so the R7 250 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 GeForce GT 640 has 1024 MB more video memory than the R7 250, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GeForce GT 640 also has superior memory performance overall.

The GeForce GT 640 has 2.9 GB/sec greater memory bandwidth than the R7 250, which means that the memory performance of the GeForce GT 640 is marginally better than the R7 250.

Both the Radeon R7 250 v2 XFX Core 1GB Edition 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 250 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 250 v2 XFX Core 1GB Edition requires 65 Watts to run and the GeForce GT 640 requires 65 Watts. We would recommend a PSU with at least 400 Watts for the R7 250 and a PSU with at least 350 Watts for the GeForce GT 640. The two GPUs require the same amount of wattage to run. As such, there is no need to worry about which will more significantly affect your yearly electricity bills.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1000 MHzvs902 MHz
Boost Clock1050 MHzvs-
ArchitectureGCN 1.1 Oland XTKepler GK107-300-A2
OC Potential Poor vs Fair
Driver Support Great vs Good
Release Date09 Oct 2013vs05 Jun 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - vs green tick
6.6
1600x900
5.4
green tick vs
5.1
1920x1080
4.2
green tick vs
3.5
2560x1440
2.7
green tick vs
2.5
3840x2160
1.7
green tick vs green tick
1.7

GPU Memory

Memory1024 MBvs2048 MB
Memory Speed800 MHzvs891 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeDDR3vsDDR3
Memory Bandwidth25.6GB/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 Performance17%vs17%
Technology28nmvs28nm
Texture Mapping Units24vs32
Texture Rate24 GTexel/svs28.9 GTexel/s
Render Output Units8vs16
Pixel Rate8 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 Power65 Wattsvs65 Watts
Recommended PSU400 Watts & 29 Ampsvs350 Watts & 26 Amps

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-4130 3.4GHzvsIntel Core i3-3220 3.3GHz
Recommended RAM4 GBvs8 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon R7 250 v2 XFX Core 1GB Edition is a special edition of AMD's Fast-Middle-Class Radeon R7 250 v2 2GB, created by XFX.

Overclock: Central Unit
The Central Unit runs at the same speed.

Overclock: Memory Clock
The Operating Memory Clock remains the same and the Frame Buffer was halved to 1GB.

Cooling Solution
The Cooling System remains the same.

Performance
Without Overclocking Out of The Box, Radeon R7 250 v2 XFX Core 1GB Edition is as fast as the reference Radeon R7 250 v2.
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
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