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Gaming Performance Comparison

Recommended System Requirements
Game GeForce 8600 GT 512MB GDDR3 Radeon HD 2900 GT
Hitman 3 2000% 1865%
Cyberpunk 2077 1514% 1411%
Assassins Creed: Valhalla 1376% 1282%
Resident Evil 8 1514% 1411%
FIFA 21 714% 662%
Grand Theft Auto VI 2171% 2026%
Call of Duty: Black Ops Cold War 1329% 1237%
Genshin Impact 1514% 1411%
Far Cry 6 2236% 2086%
The Medium 1914% 1785%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 2900 GT are very slightly better than the Nvidia GeForce 8600 GT 512MB GDDR3.

The HD 2900 has a 60 MHz higher core clock speed than the 8600 GT, but the 8600 GT has 4 more Texture Mapping Units than the HD 2900. As a result, the 8600 GT exhibits a 1.4 GTexel/s better Texture Fill Rate than the HD 2900. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The HD 2900 has a 60 MHz higher core clock speed and 4 more Render Output Units than the 8600 GT. This results in the HD 2900 providing 2.9 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The HD 2900 was released less than a year after the 8600 GT, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The 8600 GT has 256 MB more video memory than the HD 2900, so is likely to be slightly better at displaying game textures at higher resolutions. However, overall, the HD 2900 has superior memory performance.

The HD 2900 has 28.8 GB/sec greater memory bandwidth than the 8600 GT, which means that the memory performance of the HD 2900 is slightly better than the 8600 GT.

The GeForce 8600 GT 512MB GDDR3 has 32 Shader Processing Units and the Radeon HD 2900 GT has 240. However, the actual shader performance of the 8600 GT is 43 and the actual shader performance of the HD 2900 is 94. The HD 2900 having 51 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 2900 delivers a noticeably smoother and more efficient experience when processing graphical data than the 8600 GT.

The GeForce 8600 GT 512MB GDDR3 requires 46 Watts to run and the Radeon HD 2900 GT requires 150 Watts. We would recommend a PSU with at least 350 Watts for the 8600 GT and a PSU with at least 550 Watts for the HD 2900. The HD 2900 requires 104 Watts more than the 8600 GT to run. The difference is significant enough that the HD 2900 may have an adverse affect on your yearly electricity bills in comparison to the 8600 GT.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed540 MHzvs600 MHz
Boost Clock-vs-
ArchitectureTesla G84R600 GT
OC Potential Poor vs Good
Driver Support Poor vs -
Release Date01 Apr 2007vs06 Nov 2007
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

Memory512 MBvs256 MB
Memory Speed700 MHzvs800 MHz
Memory Bus128 Bitvs256 Bit
Memory TypeGDDR3vsGDDR3
Memory Bandwidth22.4GB/secvs51.2GB/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 Units32vs240
Actual Shader Performance2%vs5%
Texture Mapping Units16vs12
Texture Rate8.6 GTexel/svs7.2 GTexel/s
Render Output Units8vs12
Pixel Rate4.3 GPixel/svs7.2 GPixel/s

GPU Outputs

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

GPU Power Requirements

Max Power46 Wattsvs150 Watts
Recommended PSU350 Watts & 24 Ampsvs550 Watts & 30 Amps

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core 2 Duo E6600 2.4GHzvsIntel Core 2 Duo E6400 2.13GHz
Recommended RAM3 GBvs3 GB
Maximum Recommended Gaming Resolution1024x768vs1024x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewGeForce 8600 GT 512MB GDDR3 is one of the many variants of the fast-middle-class GeForce 8600 GT.
On this version, the GPU is equipped with 512MB of standard GDDR3. The architecture allows the use of 512MB, since the GPU's processing power is strong enough and the memory controller is up for the task of processing 512MB. Therefore, the performance is superior to the 256MB version and any other version of DDR2, including 1GB.
However, and due to its architecture limitations, modern demanding games will require reduced settings, even if they don't require more than 512MB of video ram. Very Demanding games like Metro 2033 are only playable at the lowest settings.
Radeon HD 2900 GT is a high-end GPU based on the 80nm variant of the second unified shader architecture, R600.
It's based on the R600 GT Core and offers 240 Shader Processing Units, 12 TMUs and 12 ROPs a 256-bit memory interface of standard GDDR3. The central unit runs at 600MHz and the memory clock runs at up to 800MHz.
Its performance is not comparable to neither Radeon HD 2900 Pro nor Radeon HD 2900 XT due to featuring only 240 Shader Processing Units. Still, it's clearly above Radeon HD 2600 GPUs.
Due to the limited memory size, most of today's games will require unattractive resolutions but should run fluently from medium to high settings at anything below 1024x768.
Recommended CPU
Possible GPU Upgrades
GPU Variants