Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game GeForce 8400 GS GeForce 6800 XT
Cyberpunk 2077 4420% 3398%
Assassins Creed: Valhalla 4034% 3100%
Call of Duty: Black Ops Cold War 3900% 2996%
FIFA 21 2180% 1665%
Watch Dogs Legion 4260% 3275%
Microsoft Flight Simulator 3900% 2996%
World of Warcraft: Shadowlands 6380% 4915%
Grand Theft Auto VI 6260% 4823%
Godfall 7240% 5581%
Genshin Impact 4420% 3398%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 6800 XT are noticeably better than the Nvidia GeForce 8400 GS.

The GeForce 8400 GS was released over a year more recently than the GeForce 6800 XT, and so the GeForce 8400 GS is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GeForce 6800 XT.

Both GPUs exhibit very poor performance, so rather than upgrading from one to the other you should consider looking at more powerful GPUs. Neither of these will be able to run the latest games in any playable way.

The GeForce 8400 GS and the GeForce 6800 XT have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The GeForce 6800 XT has 4.8 GB/sec greater memory bandwidth than the GeForce 8400 GS, which means that the memory performance of the GeForce 6800 XT is marginally better than the GeForce 8400 GS.

The GeForce 8400 GS has 16 Shader Processing Units and the GeForce 6800 XT has 12. However, the actual shader performance of the GeForce 8400 GS is 18 and the actual shader performance of the GeForce 6800 XT is 4. The GeForce 8400 GS having 14 better shader performance is not particularly notable, as altogether the GeForce 6800 XT performs better when taking into account other relevant data.

The GeForce 8400 GS requires 18 Watts to run but there is no entry for the GeForce 6800 XT. We would recommend a PSU with at least 300 Watts for the GeForce 8400 GS.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed450 MHzvs337 MHz
Boost Clock-vs-
ArchitectureTesla G86NV40/NV41
OC Potential Fair vs -
Driver Support Poor vs -
Release Date17 Apr 2007vs02 Jan 2005
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
1.8
green tick vs -
1920x1080
1.2
green tick vs -
2560x1440
0.7
green tick vs -
3840x2160
0.4
green tick vs -

GPU Memory

Memory256 MBvs256 MB
Memory Speed400 MHzvs350 MHz
Memory Bus64 Bitvs256 Bit
Memory TypeDDR2vsDDR
Memory Bandwidth6.4GB/secvs11.2GB/sec
L2 Cache 0 KB green tick vs -
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units16vs12
Actual Shader Performance1%vs0%
Technology80nmvs-
Texture Mapping Units8vs-
Texture Rate3.6 GTexel/svs-
Render Output Units4vs-
Pixel Rate1.8 GPixel/svs-
Comparison

GPU Outputs

Max Digital Resolution (WxH)2048x1536vs2560x1600
VGA Connections1vs0
DVI Connections1vs2
HDMI Connections1vs0
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power18 Watts-
Recommended PSU300 Watts & 20 Amps-

GPU Features

DirectX10.0vs9.0c
Shader Model4.0vs3.0
Open GL3.3vs1.5
Open CL-vs-
Notebook GPUnono
SLI/Crossfirenovsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Celeron 440 2.0GHz-
Recommended RAM2 GB-
Maximum Recommended Gaming Resolution800x600-

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewGeForce 8400 GS is an entry-level GFX based on the 80nm variant of the first-shader unified architecture.
It's based on the G86 Core and offers 16 Shader Processing Units, 8 TMUs and 4 ROPs, on a 64-bit memory interface of DDR2. The central unit runs at 450MHz and the memory clock operates at 400MHz. It will consume no more than 40 Watt.
It's therefore a GeForce 8500 GT, slightly lower power consumption and no SLI support.
This GPU is only suited for a 1024x768 (or less) resolution. Most of today's games will only run at low settings and extremely demanding games might not run at all. DirectX 11 based games aren't supported and its performance will decrease drastically, as the resolution increases.
Note: This GPU had two revisions which added HDMI support, DDR3 memory and different core configurations.
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
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Possible GPU Upgrades
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GPU Variants
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