Select any two GPUs for comparison

Gaming Performance Comparison

Recommended System Requirements
Game GeForce 8600 GTS 256MB Radeon HD 3850 AGP
Red Dead Redemption 2 1197% 937%
Halo: Reach 312% 229%
Cyberpunk 2077 1682% 1324%
Call of Duty: Modern Warfare 1197% 937%
Doom Eternal 1015% 791%
Microsoft Flight Simulator 1682% 1324%
Warcraft 3: Reforged 50% 60%
Grand Theft Auto VI 1882% 1484%
Star Wars: Jedi - Fallen Order 1682% 1324%
Dragon Ball Z Kakarot 700% 540%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 3850 AGP are noticeably better than the Nvidia GeForce 8600 GTS 256MB.

The 8600 GTS has a 7 MHz higher core clock speed and the same number of Texture Mapping Units as the HD 3850. This results in the 8600 GTS providing 0.1 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 8600 GTS has a 7 MHz higher core clock speed than the HD 3850, but the HD 3850 has 8 more Render Output Units than the 8600 GTS. As a result, the HD 3850 exhibits a 5.3 GPixel/s better Pixel Fill Rate than the 8600 GTS. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The HD 3850 was released less than a year after the 8600 GTS, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The HD 3850 has 256 MB more video memory than the 8600 GTS, so is likely to be slightly better at displaying game textures at higher resolutions. This is supported by the fact that the HD 3850 also has superior memory performance overall.

The HD 3850 has 21.1 GB/sec greater memory bandwidth than the 8600 GTS, which means that the memory performance of the HD 3850 is slightly better than the 8600 GTS.

The GeForce 8600 GTS 256MB has 32 Shader Processing Units and the Radeon HD 3850 AGP has 320. However, the actual shader performance of the 8600 GTS is 54 and the actual shader performance of the HD 3850 is 214. The HD 3850 having 160 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 3850 delivers a slightly smoother and more efficient experience when processing graphical data than the 8600 GTS.

The HD 3850 transistor size technology is 25 nm (nanometers) smaller than the 8600 GTS. This means that the HD 3850 is expected to run slightly cooler and achieve higher clock frequencies than the 8600 GTS.

The GeForce 8600 GTS 256MB requires 75 Watts to run and the Radeon HD 3850 AGP requires 75 Watts. We would recommend a PSU with at least 350 Watts for the 8600 GTS and a PSU with at least 450 Watts for the HD 3850. The two GPUs require the same amount of wattage to run. As such, there is no need to worry about which will more significantly affect your yearly electricity bills.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed675 MHzvs668 MHz
Boost Clock-vs-
ArchitectureTesla G84RV670 PRO
OC Potential Fair vs Poor
Driver Support Poor vs -
Release Date01 Apr 2007vs03 Jan 2008
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - green tick vs green tick -
green tick vs -
green tick vs -
green tick vs -
green tick vs -

GPU Memory

Memory256 MBvs512 MB
Memory Speed1000 MHzvs830 MHz
Memory Bus128 Bitvs256 Bit
Memory TypeGDDR3vsGDDR3
Memory Bandwidth32GB/secvs53.1GB/sec
L2 Cache 0 KB green tick vs -
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units32vs320
Actual Shader Performance3%vs10%
Texture Mapping Units16vs16
Texture Rate10.8 GTexel/svs10.7 GTexel/s
Render Output Units8vs16
Pixel Rate5.4 GPixel/svs10.7 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs2560x1600
VGA Connections0vs0
DVI Connections2vs2
HDMI Connections0vs0
DisplayPort Connections-vs-

GPU Power Requirements

Max Power75 Wattsvs75 Watts
Recommended PSU350 Watts & 24 Ampsvs450 Watts & 28 Amps

GPU Features

Shader Model4.0vs4.1
Open GL3.3vs3.3
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core 2 Duo E6600 2.4GHzvsIntel Core 2 Duo E6850 3.0GHz
Recommended RAM3 GBvs4 GB
Maximum Recommended Gaming Resolution1280x720vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewGeForce 8600 GTS is a fast-middle-class GFX based on the 80nm variant of the first-shader unified architecture.
It's based on the G84 Core and offers 32 Shader Processing Units, 16 TMUs and 8 ROPs, on a 128-bit memory interface of GDDR3. The central unit runs at 675MHz and the memory clock operates 1000MHz. It will consume no more than 75 Watt.
It's therefore a further clocked GeForce 8600 GT and should be significantly faster.
This GPU is only suited for a 1024x768 (or less) resolution. Today's games will run at medium settings although 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.
Radeon HD 3850 AGP is a variant of the high-end Radeon HD 3850 based on the 55nm, second unified shader architecture, R600. Check its page to know more about its Core.
Compared to Radeon HD 3850, it features twice as much video memory and an AGP 8X Bus Interface. Benchmarks indicate the double sized frame buffer benefits this GPU largely and so its performance is up to 8% better than the reference Radeon HD 3850.
Today's modern games should run fluently at medium settings but with modest resolutions. DirectX 11 games aren't supported.
Recommended CPU
Possible GPU Upgrades
GPU Variants