Select any two GPUs for comparison

Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 420 Gigabyte Rev. 3.0 2GB Edition GeForce 6800 Ultra
Red Dead Redemption 2 2153% 2157%
Halo: Reach 616% 617%
Cyberpunk 2077 2995% 3001%
Call of Duty: Modern Warfare 2153% 2157%
Doom Eternal 1837% 1841%
Microsoft Flight Simulator 2995% 3001%
Grand Theft Auto VI 3342% 3349%
Dragon Ball Z Kakarot 1289% 1292%
Star Wars: Jedi - Fallen Order 2995% 3001%
Need For Speed Heat 2153% 2157%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 420 Gigabyte Rev. 3.0 2GB Edition are marginally better than the Nvidia GeForce 6800 Ultra.

The GT 420 was released over three years more recently than the GeForce 6800 Ultra, and so the GT 420 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GeForce 6800 Ultra when running the latest games.

The GT 420 has 1792 MB more video memory than the GeForce 6800 Ultra, so is likely to be much better at displaying game textures at higher resolutions. However, the overall memory performance is about the same.

The GeForce 6800 Ultra has 9.6 GB/sec greater memory bandwidth than the GT 420, which means that the memory performance of the GeForce 6800 Ultra is marginally better than the GT 420.

The GeForce GT 420 Gigabyte Rev. 3.0 2GB Edition has 48 Shader Processing Units and the GeForce 6800 Ultra has 22. However, the actual shader performance of the GT 420 is 67 and the actual shader performance of the GeForce 6800 Ultra is 9. The GT 420 having 58 better shader performance is not particularly notable, as altogether the GeForce 6800 Ultra performs better when taking into account other relevant data.

The GeForce GT 420 Gigabyte Rev. 3.0 2GB Edition requires 50 Watts to run and the GeForce 6800 Ultra requires 124 Watts. We would recommend a PSU with at least 350 Watts for the GT 420. The GeForce 6800 Ultra requires 74 Watts more than the GT 420 to run. The difference is significant enough that the GeForce 6800 Ultra may have an adverse affect on your yearly electricity bills in comparison to the GT 420.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed700 MHzvs400 MHz
Boost Clock-vs-
ArchitectureFermi GF108-200-A1NV40/NV45
OC Potential Fair vs -
Driver Support Poor vs -
Release Date03 Sep 2010vs01 Mar 2005
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

Memory2048 MBvs256 MB
Memory Speed800 MHzvs550 MHz
Memory Bus128 Bitvs256 Bit
Memory TypeDDR3vsGDDR3
Memory Bandwidth25.6GB/secvs35.2GB/sec
L2 Cache 256 KB green tick vs -
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units48vs22
Actual Shader Performance3%vs0%
Texture Mapping Units4vs-
Texture Rate2.8 GTexel/svs-
Render Output Units4vs-
Pixel Rate2.8 GPixel/svs-

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs2560x1600
VGA Connections1vs0
DVI Connections1vs2
HDMI Connections1vs0
DisplayPort Connections0vs-

GPU Power Requirements

Max Power50 Wattsvs124 Watts
Recommended PSU350 Watts & 23 Amps-

GPU Features

Shader Model5.0vs3.0
Open GL4.5vs1.5
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Celeron E3400 Dual-Core 2.6GHz-
Recommended RAM4 GB-
Maximum Recommended Gaming Resolution1366x768-

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce GT 420 Gigabyte Rev. 3.0 2GB Edition is a special edition of NVIDIA's Middle-Class GeForce GT 420, created by Gigabyte.

Overclock: Central Unit

Overclock: Memory Clock
The Operating Memory Clock was reduced from 900MHz to 800MHz.

Frame Buffer

Cooling Solution
GIGABYTE 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.

Benchmarks Indicate no Performance Boost over the Reference GeForce GT 420.
The groundbreaking new NVIDIA GeForce 6800 graphics processing units (GPUs) and their revolutionary technologies power worlds where reality and fantasy meet; worlds in which new standards are set for visual realism and quality, performance, and video functionality. The GeForce 6800 GPUs deliver powerful, elegant graphics to drench your senses, immersing you in unparalleled worlds of visual effects for the ultimate PC experience.
Recommended CPU
Possible GPU Upgrades
GPU Variants