Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game GeForce 6800 XT GeForce 6600 GT
Cyberpunk 2077 3398% 4709%
Assassins Creed: Valhalla 3100% 4298%
Call of Duty: Black Ops Cold War 2996% 4155%
FIFA 21 1665% 2326%
Microsoft Flight Simulator 2996% 4155%
Watch Dogs Legion 3275% 4538%
World of Warcraft: Shadowlands 4915% 6794%
Grand Theft Auto VI 4823% 6666%
Genshin Impact 3398% 4709%
Horizon: Zero Dawn 3213% 4453%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 6800 XT are significantly better than the Nvidia GeForce 6600 GT.

The GeForce 6800 XT was released less than a year after the GeForce 6600 GT, and so they are likely to have similar driver support for optimizing performance when running the latest games.

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 6800 XT has 128 MB more video memory than the GeForce 6600 GT, so is likely to be slightly better at displaying game textures at higher resolutions. However, overall, the GeForce 6600 GT has superior memory performance.

The GeForce 6600 GT has 4 GB/sec greater memory bandwidth than the GeForce 6800 XT, which means that the memory performance of the GeForce 6600 GT is marginally better than the GeForce 6800 XT.

The GeForce 6800 XT has 12 Shader Processing Units and the GeForce 6600 GT has 11. However, the actual shader performance of the GeForce 6800 XT is 4 and the actual shader performance of the GeForce 6600 GT is 6. The GeForce 6600 GT having 2 better shader performance and an altogether better performance when taking into account other relevant data means that the GeForce 6600 GT delivers a marginally smoother and more efficient experience when processing graphical data than the GeForce 6800 XT.

The GeForce 6600 GT requires 48 Watts to run but there is no entry for the GeForce 6800 XT.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed337 MHzvs500 MHz
Boost Clock-vs-
ArchitectureNV40/NV41NV43
OC Potential - vs -
Driver Support - vs -
Release Date02 Jan 2005vs01 Nov 2004
GPU LinkGD LinkGD Link
Approved
Comparison

GPU Memory

Memory256 MBvs128 MB
Memory Speed350 MHzvs475 MHz
Memory Bus256 Bitvs128 Bit
Memory TypeDDRvsGDDR3
Memory Bandwidth11.2GB/secvs15.2GB/sec
L2 Cache - vs -
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units12vs11
Actual Shader Performance0%vs0%
Technology-vs-
Texture Mapping Units-vs-
Texture Rate-vs-
Render Output Units-vs-
Pixel Rate-vs-
Comparison

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs2560x1600
VGA Connections0vs1
DVI Connections2vs1
HDMI Connections0vs0
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power-48 Watts
Recommended PSU--

GPU Features

DirectX9.0cvs9.0c
Shader Model3.0vs3.0
Open GL1.5vs1.5
Open CL-vs-
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended Processor--
Recommended RAM--
Maximum Recommended Gaming Resolution--

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewThe 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. Supercharge your gaming with the power of an NVIDIA GeForce 6600 GPU. The NVIDIA GeForce 6600 GPUs deliver best-in-class performance and advanced visual effects for next-generation games. The only GPU in its class with support for Microsoft DirectX 9.0 Shader Model 3.0 and with support for PCI Express, the GeForce 6600 delivers ultra-realistic effects, unmatched features, and rock-solid stability so you can play your game the way itís meant to be played.
Recommended CPU
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Possible GPU Upgrades
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GPU Variants
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