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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 620 Radeon HD 3470
Red Dead Redemption 2 1546% 2616%
Cyberpunk 2077 2162% 3631%
Doom Eternal 1315% 2235%
Call of Duty: Modern Warfare 1546% 2616%
Dragon Ball Z Kakarot 915% 1575%
Halo: Reach 423% 763%
Microsoft Flight Simulator 2162% 3631%
Star Wars: Jedi - Fallen Order 2162% 3631%
Grand Theft Auto VI 2415% 4050%
Need For Speed Heat 1546% 2616%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 620 are significantly better than the AMD Radeon HD 3470.

The Radeon HD 3470 has a 100 MHz higher core clock speed than the GeForce GT 620, but the GeForce GT 620 has 12 more Texture Mapping Units than the Radeon HD 3470. As a result, the GeForce GT 620 exhibits a 8 GTexel/s better Texture Fill Rate than the Radeon HD 3470. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The Radeon HD 3470 has a 100 MHz higher core clock speed than the GeForce GT 620 and the same number of Render Output Units. This results in the Radeon HD 3470 providing 0.4 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 GeForce GT 620 was released over three years more recently than the Radeon HD 3470, and so the GeForce GT 620 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the Radeon HD 3470 when running the latest games.

The GeForce GT 620 has 768 MB more video memory than the Radeon HD 3470, so is likely to be much better at displaying game textures at higher resolutions. However, overall, the Radeon HD 3470 has superior memory performance.

The Radeon HD 3470 has 0.8 GB/sec greater memory bandwidth than the GeForce GT 620, which means that the memory performance of the Radeon HD 3470 is marginally better than the GeForce GT 620.

The GeForce GT 620 has 96 Shader Processing Units and the Radeon HD 3470 has 40. However, the actual shader performance of the GeForce GT 620 is 134 and the actual shader performance of the Radeon HD 3470 is 32. The GeForce GT 620 having 102 better shader performance and an altogether better performance when taking into account other relevant data means that the GeForce GT 620 delivers a marginally smoother and more efficient experience when processing graphical data than the Radeon HD 3470.

The GeForce GT 620 transistor size technology is 15 nm (nanometers) smaller than the Radeon HD 3470. This means that the GeForce GT 620 is expected to run slightly cooler and achieve higher clock frequencies than the Radeon HD 3470.

The GeForce GT 620 requires 49 Watts to run and the Radeon HD 3470 requires 30 Watts. We would recommend a PSU with at least 300 Watts for the GeForce GT 620 and a PSU with at least 550 Watts for the Radeon HD 3470. The GeForce GT 620 requires 19 Watts more than the Radeon HD 3470 to run. The difference is not significant enough for the GeForce GT 620 to have a noticeably larger impact on your yearly electricity bills than the Radeon HD 3470.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed700 MHzvs800 MHz
Boost Clock-vs-
ArchitectureFermi GF108-100-KB-A1RV620 PRO
OC Potential Fair vs Poor
Driver Support Poor vs -
Release Date15 May 2012vs23 Jan 2008
GPU LinkGD LinkGD Link

Resolution Performance

green tick vs -
green tick vs -
green tick vs -
green tick vs -
3840x2160 - green tick vs green tick -

GPU Memory

Memory1024 MBvs256 MB
Memory Speed900 MHzvs950 MHz
Memory Bus64 Bitvs64 Bit
Memory TypeDDR3vsGDDR3
Memory Bandwidth14.4GB/secvs15.2GB/sec
L2 Cache 128 KB green tick vs -
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units96vs40
Actual Shader Performance6%vs2%
Texture Mapping Units16vs4
Texture Rate11.2 GTexel/svs3.2 GTexel/s
Render Output Units4vs4
Pixel Rate2.8 GPixel/svs3.2 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs2560x1600
VGA Connections1vs1
DVI Connections1vs1
HDMI Connections1vs1
DisplayPort Connections-vs-

GPU Power Requirements

Max Power49 Wattsvs30 Watts
Recommended PSU300 Watts & 22 Ampsvs550 Watts & 20 Amps

GPU Features

Shader Model5.0vs4.1
Open GL4.5vs3.2
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Celeron G550 2.6GHzvsIntel Celeron E1400 Dual-Core 2GHz
Recommended RAM4 GBvs2 GB
Maximum Recommended Gaming Resolution1366x768vs800x600

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce GT 620 is an Entry-Level Graphics Card based on the first revision of the Fermi Architecture.

The Fermi Architecture is manufactured with a 40nm technology and uses a technique known as Hot Clocking: The Shaders are clocked twice as fast as the Central Unit. While this leads to a reasonable performance boost, it causes enormous amounts of energy dissipation, leading, ultimately, to a significantly higher operating temperature.
Fermi is also the first GPU architecture with fully cached memory access which increases memory performance.

It equips a GPU codenamed Fermi GF108-100-KB-A1 which has 2 Stream Multiprocessors activated and thus offers 96 Shader Processing Units, 16 TMUs and 4 ROPs. The Central Unit is clocked at 700MHz.

The GPU accesses a 1GB 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 500MHz.

DirectX 11.0 Support (11.0 Hardware Default) and support for 3D Vision Surround, PhysX, Realtime Raytracing and other technologies.

Cooling Solution
The Cooling Solution consists of a Single-Fan.

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.

Gaming benchmarks put its performance is somewhat better than Radeon HD 7470.

System Suggestions
We recommend a modest processor (Intel Celeron) and 4GB of RAM for a system with GeForce GT 620.
Radeon HD 3470 is a middle-class GPU based on the 55nm, second unified shader architecture, R600.
It's based on the RV620 PRO Core and offers 40 Shader Processing Units, 4 TMUs and 4 ROPs a 64-bit memory interface of standard GDDR3. The central unit runs at 800MHz and the memory clock runs at up to 950MHz.
Compared to Radeon HD 3450, it's significantly faster due to having extra memory bandwidth and only consumes up to 5 more Watt. This is possible due to featuring GDDR3 (which allows higher operating memory clocks and is more energy efficient). The central unit's 200MHz also plays a decisive role between the playable and unplayable.
Only today's modern, forgiving, games can be played at decent settings. DirectX 11 games aren't supported.
Recommended CPU
Possible GPU Upgrades
GPU Variants