ATI Radeon X800 XT AGP vs GeForce 8400 GS PCI

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the rankingnot ratednot rated
Place by popularitynot in top-100not in top-100
ArchitectureTesla 2.0 (2007−2013)R400 (2004−2008)
GPU code nameGT218R420
Market segmentDesktopDesktop
Release date17 April 2007 (17 years ago)1 March 2004 (20 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores16no data
Core clock speed520 MHz500 MHz
Number of transistors260 million160 million
Manufacturing process technology40 nm130 nm
Power consumption (TDP)40 Watt54 Watt
Texture fill rate4.1608.000
Floating-point processing power0.03936 TFLOPSno data
ROPs416
TMUs816

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

InterfacePCIAGP 8x
Length170 mmno data
Width1-slot1-slot
Supplementary power connectorsNone1x Molex

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeDDR3GDDR3
Maximum RAM amount512 MB256 MB
Memory bus width64 Bit256 Bit
Memory clock speed500 MHz500 MHz
Memory bandwidth8 GB/s32 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors1x DVI, 1x HDMI, 1x VGA1x DVI, 1x VGA, 1x S-Video
HDMI+-

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX11.1 (10_1)9.0b (9_2)
Shader Model4.1no data
OpenGL3.32.0
OpenCL1.1N/A
VulkanN/AN/A
CUDA1.2-

Pros & cons summary


Recency 17 April 2007 1 March 2004
Maximum RAM amount 512 MB 256 MB
Chip lithography 40 nm 130 nm
Power consumption (TDP) 40 Watt 54 Watt

8400 GS PCI has an age advantage of 3 years, a 100% higher maximum VRAM amount, a 225% more advanced lithography process, and 35% lower power consumption.

We couldn't decide between GeForce 8400 GS PCI and Radeon X800 XT AGP. We've got no test results to judge.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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NVIDIA GeForce 8400 GS PCI
GeForce 8400 GS PCI
ATI Radeon X800 XT AGP
Radeon X800 XT AGP

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Community ratings

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Questions & comments

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