Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Radeon X1900 XT GeForce GT 620
Red Dead Redemption 2 1072% 1546%
Cyberpunk 2077 1510% 2162%
Doom Eternal 908% 1315%
Call of Duty: Modern Warfare 1072% 1546%
Dragon Ball Z Kakarot 623% 915%
Halo: Reach 272% 423%
Microsoft Flight Simulator 1510% 2162%
Star Wars: Jedi - Fallen Order 1510% 2162%
Grand Theft Auto VI 1691% 2415%
Need For Speed Heat 1072% 1546%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon X1900 XT are significantly better than the Nvidia GeForce GT 620.

The GeForce GT 620 was released over three years more recently than the Radeon X1900 XT, 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 X1900 XT when running the latest games.

The GeForce GT 620 has 768 MB more video memory than the Radeon X1900 XT, so is likely to be much better at displaying game textures at higher resolutions. However, the overall memory performance is about the same.

The Radeon X1900 XT has 32 GB/sec greater memory bandwidth than the GeForce GT 620, which means that the memory performance of the Radeon X1900 XT is noticeably better than the GeForce GT 620.

The Radeon X1900 XT has 48 Shader Processing Units and the GeForce GT 620 has 96. However, the actual shader performance of the Radeon X1900 XT is 20 and the actual shader performance of the GeForce GT 620 is 134. The GeForce GT 620 having 114 better shader performance is not particularly notable, as altogether the Radeon X1900 XT performs better when taking into account other relevant data.

The Radeon X1900 XT requires 100 Watts to run and the GeForce GT 620 requires 49 Watts. We would recommend a PSU with at least 300 Watts for the GeForce GT 620, but we do not have a recommended PSU wattage for the Radeon X1900 XT. The Radeon X1900 XT requires 51 Watts more than the GeForce GT 620 to run. The difference is significant enough that the Radeon X1900 XT 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 Speed625 MHzvs700 MHz
Boost Clock-vs-
ArchitectureR580Fermi GF108-100-KB-A1
OC Potential Poor vs Fair
Driver Support - vs Poor
Release Date01 Jan 2006vs15 May 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - vs green tick
4.1
1600x900 - vs green tick
2.8
1920x1080 - vs green tick
2.1
2560x1440 - vs green tick
1.5
3840x2160 - green tick vs green tick -

GPU Memory

Memory256 MBvs1024 MB
Memory Speed725 MHzvs900 MHz
Memory Bus256 Bitvs64 Bit
Memory TypeGDDR3vsDDR3
Memory Bandwidth46.4GB/secvs14.4GB/sec
L2 Cache - vs green tick 128 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units48vs96
Actual Shader Performance1%vs6%
Technology-vs40nm
Texture Mapping Units-vs16
Texture Rate-vs11.2 GTexel/s
Render Output Units-vs4
Pixel Rate-vs2.8 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)-vs2560x1600
VGA Connections0vs1
DVI Connections2vs1
HDMI Connections0vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power100 Wattsvs49 Watts
Recommended PSU-300 Watts & 22 Amps

GPU Features

DirectX9.0cvs12.0
Shader Model3.0vs5.0
Open GL2.0vs4.5
Open CL-vs-
Notebook GPUnono
SLI/Crossfireyesvsno
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended Processor-Intel Celeron G550 2.6GHz
Recommended RAM-4 GB
Maximum Recommended Gaming Resolution-1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon X1900 XT is a high-end GPU based on the 90nm variant of the R500 architecture.
It's based on the R580 Core and offers 48 Pixel Shaders, 16 TMUs and 16 ROPs, on a 256-bit of standard GDDR3. The central unit runs at 625MHz and the memory clock operates at up to 725MHz.
Its much faster than Radeon X1900 GT due to the core configuration.
Most of today's games might be playable at medium settings although the low preset will have to suffice on some. As it's not based on a Shader-Unified architecture, both DirectX 10 & 11 games aren't supported.
Overview
GeForce GT 620 is an Entry-Level Graphics Card based on the first revision of the Fermi Architecture.

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.

GPU
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.

Memory
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.

Features
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.

Performance
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
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Possible GPU Upgrades
-
GPU Variants
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