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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 5450 Sapphire 1GB DDR3 Edition GeForce GT 620
Halo: Reach 763% 423%
Cyberpunk 2077 3631% 2162%
Red Dead Redemption 2 2616% 1546%
Dragon Ball Z Kakarot 1575% 915%
Call of Duty: Modern Warfare 2616% 1546%
Doom Eternal 2235% 1315%
Microsoft Flight Simulator 3631% 2162%
Grand Theft Auto VI 4050% 2415%
FIFA 20 1347% 777%
Need For Speed Heat 2616% 1546%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 620 are significantly better than the AMD Radeon HD 5450 Sapphire 1GB DDR3 Edition.

The GeForce GT 620 has a 50 MHz higher core clock speed and 8 more Texture Mapping Units than the HD 5450. This results in the GeForce GT 620 providing 6 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 620 has a 50 MHz higher core clock speed than the HD 5450 and the same number of Render Output Units. This results in the GeForce GT 620 providing 0.2 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 HD 5450 was released less than a year after the GeForce GT 620, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The Radeon HD 5450 Sapphire 1GB DDR3 Edition and the GeForce GT 620 have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The GeForce GT 620 has 3.7 GB/sec greater memory bandwidth than the HD 5450, which means that the memory performance of the GeForce GT 620 is marginally better than the HD 5450.

The Radeon HD 5450 Sapphire 1GB DDR3 Edition has 80 Shader Processing Units and the GeForce GT 620 has 96. However, the actual shader performance of the HD 5450 is 52 and the actual shader performance of the GeForce GT 620 is 134. The GeForce GT 620 having 82 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 HD 5450.

The GeForce GT 620 requires 49 Watts to run but there is no entry for the HD 5450. We would recommend a PSU with at least 400 Watts for the HD 5450 and a PSU with at least 300 Watts for the GeForce GT 620. The HD 5450 has been recommended a PSU with 100 Watts more than the GeForce GT 620. The difference is significant enough that the HD 5450 may have an adverse affect on your yearly electricity bills in comparison to the GeForce GT 620.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed650 MHzvs700 MHz
Boost Clock-vs-
ArchitectureTerascale 2 Cedar PROFermi GF108-100-KB-A1
OC Potential Fair vs Fair
Driver Support - vs Poor
Release Date01 Aug 2012vs15 May 2012
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - vs green tick
1600x900 - vs green tick
1920x1080 - vs green tick
2560x1440 - vs green tick
3840x2160 - green tick vs green tick -

GPU Memory

Memory1024 MBvs1024 MB
Memory Speed667 MHzvs900 MHz
Memory Bus64 Bitvs64 Bit
Memory TypeDDR3vsDDR3
Memory Bandwidth10.7GB/secvs14.4GB/sec
L2 Cache 128 KB green tick vs green tick 128 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units80vs96
Actual Shader Performance3%vs6%
Texture Mapping Units8vs16
Texture Rate5.2 GTexel/svs11.2 GTexel/s
Render Output Units4vs4
Pixel Rate2.6 GPixel/svs2.8 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs2560x1600
VGA Connections0vs1
DVI Connections1vs1
HDMI Connections1vs1
DisplayPort Connections-vs-

GPU Power Requirements

Max Power-49 Watts
Recommended PSU400 Wattsvs300 Watts & 22 Amps

GPU Features

Shader Model5.0vs5.0
Open GL3.2vs4.5
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Celeron E1600 Dual-Core 2.4GHzvsIntel Celeron G550 2.6GHz
Recommended RAM3 GBvs4 GB
Maximum Recommended Gaming Resolution1024x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon HD 5450 Sapphire 1GB DDR3 Edition is a special edition of the entry-level Radeon HD 5450 that features a slightly lower operating memory clock (667MHz, instead of 800MHz) which reduces the effective memory bandwidth between the GPU and the frame buffer. However, this does not necessarily reduce its overall performance under normal circumstances since its biggest weakness is the processing power. However, paired with a 64-bit bus, the overall performance might be bottleneck in most of today's modern games.Overview
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.
Recommended CPU
Possible GPU Upgrades
GPU Variants