Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 730 v2 Gigabyte Rev 2.0 2GB Edition GeForce GT 640 v2
Red Dead Redemption 2 569% 569%
Cyberpunk 2077 819% 819%
Doom Eternal 475% 475%
Call of Duty: Modern Warfare 569% 569%
Dragon Ball Z Kakarot 313% 313%
Halo: Reach 113% 113%
Microsoft Flight Simulator 819% 819%
Star Wars: Jedi - Fallen Order 819% 819%
Grand Theft Auto VI 922% 922%
Need For Speed Heat 569% 569%

In terms of overall gaming performance, the graphical capabilities of the GT 730 and the GT 640 are equal.

The GT 730 and the GT 640 have the same core clock speed of 902 MHz, but the GT 640 has 16 more Texture Mapping Units than the GT 730. As a result, the GT 640 exhibits a 14.5 GTexel/s better Texture Fill Rate than the GT 730. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GT 730 and the GT 640 have the same core clock speed of 902 MHz, but the GT 640 has 8 more Render Output Units than the GT 730. As a result, the GT 640 exhibits a 7.2 GPixel/s better Pixel Fill Rate than the GT 730. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GT 730 was released over a year more recently than the GT 640, and so the GT 730 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 GT 730 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 GT 730 also has superior memory performance overall.

The memory bandwidth of the GeForce GT 730 v2 Gigabyte Rev 2.0 2GB Edition and the GeForce GT 640 v2 are the same, which means the GT 730 and the GT 640 have equal limitations when it comes to graphical data transfer.

Both the GeForce GT 730 v2 Gigabyte Rev 2.0 2GB Edition and the GeForce GT 640 v2 have 384 Shader Processing Units. The two GPUs are based on different architectures, but deliver an equivalent shader performance. To compare, we must continue to look at the memory bandwidth, Texture and Pixel Rates. In this case, the GT 640 has 14.5 GTexel/s better Texture Fill Rate and 7.2 GPixel/s better Pixel Fill Rate, but the has GB/sec greater memory bandwidth. Although the GPUs are very similar in performance, the GT 640 takes the edge.

The GeForce GT 730 v2 Gigabyte Rev 2.0 2GB Edition requires 38 Watts to run and the GeForce GT 640 v2 requires 49 Watts. We would recommend a PSU with at least 300 Watts for the GT 730 and a PSU with at least 300 Watts for the GT 640. The GT 640 requires 11 Watts more than the GT 730 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 GT 730.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed902 MHzvs902 MHz
Boost Clock-vs-
ArchitectureKepler GK208-301-A1Kepler GK107-300-A2
OC Potential Fair vs Fair
Driver Support Good vs Good
Release Date09 Dec 2014vs05 Jun 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - vs green tick
6.6
1600x900
5.1
green tick vs green tick
5.1
1920x1080
3.7
green tick vs green tick
3.7
2560x1440
2.5
green tick vs green tick
2.5
3840x2160
1.8
green tick vs green tick
1.8

GPU Memory

Memory2048 MBvs1024 MB
Memory Speed1250 MHzvs1250 MHz
Memory Bus64 Bitvs64 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth40GB/secvs40GB/sec
L2 Cache 128 KB 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 Units384vs384
Actual Shader Performance17%vs17%
Technology28nmvs28nm
Texture Mapping Units16vs32
Texture Rate14.4 GTexel/svs28.9 GTexel/s
Render Output Units8vs16
Pixel Rate7.2 GPixel/svs14.4 GPixel/s
Comparison

GPU Outputs

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

GPU Power Requirements

Max Power38 Wattsvs49 Watts
Recommended PSU300 Watts & 22 Ampsvs300 Watts & 22 Amps

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-4130 3.4GHzvsIntel Core i3-3220 3.3GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce GT 730 v2 Gigabyte Rev 2.0 2GB Edition is a special edition of NVIDIA's middle-class GeForce GT 730 v2, created by Gigabyte.

Overclock: Central Unit
The Central Unit remains clocked at the same speed.

Overclock: Memory Clock
The Operating Memory Clock remains the same while the Frame Buffer was doubled to 2GB: a gimmick which doesn't yield any performance boost and can be considered market to lure consumers into paying more for the same product.

Cooling Solution
The Cooling System has been replaced by Gigabyte's custom-designed 80 mm cooler, with air flow optimized cover and aluminum base. The cooler can dissipate heat effectively from the GPU while keeping the fan at lower speed and noise.

Performance
Without any overclocking out of the box, GeForce GT 730 v2 Gigabyte Rev 2.0 2GB Edition is as fast as the reference GeForce GT 730 v2.
Overview
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.
Recommended CPU
Possible GPU Upgrades
GPU Variants
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