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GeForce 8400 GS 512MB vs Radeon HD 5830

Intro

The GeForce 8400 GS 512MB comes with core speeds of 650 MHz on the GPU, and 400 MHz on the 512 MB of DDR2 memory. It features 16 SPUs as well as 8 Texture Address Units and 4 ROPs.

Compare all of that to the Radeon HD 5830, which makes use of a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 memory works at a speed of 1000 MHz on this specific card. It features 1120(224x5) SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8400 GS 512MB 40 Watts
Radeon HD 5830 175 Watts
Difference: 135 Watts (338%)

Memory Bandwidth

Performance-wise, the Radeon HD 5830 should in theory be a lot better than the GeForce 8400 GS 512MB in general. (explain)

Radeon HD 5830 128000 MB/sec
GeForce 8400 GS 512MB 6400 MB/sec
Difference: 121600 (1900%)

Texel Rate

The Radeon HD 5830 will be much (approximately 762%) more effective at texture filtering than the GeForce 8400 GS 512MB. (explain)

Radeon HD 5830 44800 Mtexels/sec
GeForce 8400 GS 512MB 5200 Mtexels/sec
Difference: 39600 (762%)

Pixel Rate

The Radeon HD 5830 should be quite a bit (more or less 392%) more effective at AA than the GeForce 8400 GS 512MB, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 5830 12800 Mpixels/sec
GeForce 8400 GS 512MB 2600 Mpixels/sec
Difference: 10200 (392%)

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

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GeForce 8400 GS 512MB

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 8400 GS 512MB Radeon HD 5830
Manufacturer nVidia AMD
Year June 2007 February 25, 2010
Code Name G86 Cypress LE
Memory 512 MB 1024 MB
Core Speed 650 MHz 800 MHz
Memory Speed 800 MHz 4000 MHz
Power (Max TDP) 40 watts 175 watts
Bandwidth 6400 MB/sec 128000 MB/sec
Texel Rate 5200 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 2600 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 16 1120(224x5)
Texture Mapping Units 8 56
Render Output Units 4 16
Bus Type DDR2 GDDR5
Bus Width 64-bit 256-bit
Fab Process 80 nm 40 nm
Transistors 210 million 2154 million
Bus PCIe x16, PCI PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total amount of texture units of the card 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8400 GS 512MB

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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