ATI Radeon HD 2900 XT vs GeForce 8400 GS PCI

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Primary details

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

Place in the rankingnot rated988
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data0.04
Power efficiencyno data0.56
ArchitectureTesla 2.0 (2007−2013)TeraScale (2005−2013)
GPU code nameGT218R600
Market segmentDesktopDesktop
Release date17 April 2007 (18 years ago)14 May 2007 (18 years ago)
Launch price (MSRP)no data$399

Cost-effectiveness evaluation

The higher the ratio, the better. We use the manufacturer's recommended prices.

no data

Performance to price scatter graph

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 cores16320
Core clock speed520 MHz743 MHz
Number of transistors260 million720 million
Manufacturing process technology40 nm80 nm
Power consumption (TDP)40 Watt215 Watt
Texture fill rate4.16011.89
Floating-point processing power0.03936 TFLOPS0.4755 TFLOPS
ROPs416
TMUs816
L2 Cache32 KB256 KB

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).

InterfacePCIPCIe 1.0 x16
Length170 mm241 mm
Width1-slot2-slot
Supplementary power connectorsNone1x 6-pin + 1x 8-pin

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 MB512 MB
Memory bus width64 Bit512 Bit
Memory clock speed500 MHz828 MHz
Memory bandwidth8 GB/s106.0 GB/s

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display Connectors1x DVI, 1x HDMI, 1x VGA2x DVI, 1x S-Video
HDMI+-

API and SDK support

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

DirectX11.1 (10_1)10.0 (10_0)
Shader Model4.14.0
OpenGL3.33.3
OpenCL1.1N/A
VulkanN/AN/A
CUDA1.2-

Pros & cons summary


Chip lithography 40 nm 80 nm
Power consumption (TDP) 40 Watt 215 Watt

8400 GS PCI has a 100% more advanced lithography process, and 437.5% lower power consumption.

We couldn't decide between GeForce 8400 GS PCI and Radeon HD 2900 XT. We've got no test results to judge.

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NVIDIA GeForce 8400 GS PCI
GeForce 8400 GS PCI
ATI Radeon HD 2900 XT
Radeon HD 2900 XT

Other comparisons

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Community ratings

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4.7 651 votes

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3.8 64 votes

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