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GeForce 9400 GT 256MB vs Radeon HD 5830

Intro

The GeForce 9400 GT 256MB comes with a GPU core clock speed of 550 MHz, and the 256 MB of GDDR2 memory runs at 400 MHz through a 128-bit bus. It also features 16 SPUs, 8 TAUs, and 4 Raster Operation Units.

Compare that to the Radeon HD 5830, which features a core clock frequency of 800 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 256-bit bus, and makes use of a 40 nm design. It features 1120(224x5) SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9400 GT 256MB 50 Watts
Radeon HD 5830 175 Watts
Difference: 125 Watts (250%)

Memory Bandwidth

In theory, the Radeon HD 5830 is 900% quicker than the GeForce 9400 GT 256MB in general, because of its higher bandwidth. (explain)

Radeon HD 5830 128000 MB/sec
GeForce 9400 GT 256MB 12800 MB/sec
Difference: 115200 (900%)

Texel Rate

The Radeon HD 5830 is a lot (more or less 918%) better at texture filtering than the GeForce 9400 GT 256MB. (explain)

Radeon HD 5830 44800 Mtexels/sec
GeForce 9400 GT 256MB 4400 Mtexels/sec
Difference: 40400 (918%)

Pixel Rate

The Radeon HD 5830 should be quite a bit (about 482%) more effective at anti-aliasing than the GeForce 9400 GT 256MB, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 5830 12800 Mpixels/sec
GeForce 9400 GT 256MB 2200 Mpixels/sec
Difference: 10600 (482%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Display Prices

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GeForce 9400 GT 256MB

Amazon.com

Check prices at:

Radeon HD 5830

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce 9400 GT 256MB Radeon HD 5830
Manufacturer nVidia AMD
Year August 2008 February 25, 2010
Code Name G96a Cypress LE
Memory 256 MB 1024 MB
Core Speed 550 MHz 800 MHz
Memory Speed 800 MHz 4000 MHz
Power (Max TDP) 50 watts 175 watts
Bandwidth 12800 MB/sec 128000 MB/sec
Texel Rate 4400 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 2200 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 16 1120(224x5)
Texture Mapping Units 8 56
Render Output Units 4 16
Bus Type GDDR2 GDDR5
Bus Width 128-bit 256-bit
Fab Process 65 nm 40 nm
Transistors 314 million 2154 million
Bus PCIe x16 2.0, PCI PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 9400 GT 256MB

Amazon.com

Check prices at:

Radeon HD 5830

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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