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GeForce 8400 GS 512MB vs Radeon HD 5570

Intro

The GeForce 8400 GS 512MB features a GPU clock speed of 650 MHz, and the 512 MB of DDR2 RAM runs at 400 MHz through a 64-bit bus. It also features 16 Stream Processors, 8 TAUs, and 4 ROPs.

Compare those specs to the Radeon HD 5570, which features GPU clock speed of 650 MHz, and 512 MB of DDR3 memory set to run at 900 MHz through a 128-bit bus. It also features 400(80x5) SPUs, 20 TAUs, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8400 GS 512MB 40 Watts
Radeon HD 5570 43 Watts
Difference: 3 Watts (8%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5570 should in theory be a lot better than the GeForce 8400 GS 512MB overall. (explain)

Radeon HD 5570 28800 MB/sec
GeForce 8400 GS 512MB 6400 MB/sec
Difference: 22400 (350%)

Texel Rate

The Radeon HD 5570 will be a lot (approximately 150%) faster with regards to texture filtering than the GeForce 8400 GS 512MB. (explain)

Radeon HD 5570 13000 Mtexels/sec
GeForce 8400 GS 512MB 5200 Mtexels/sec
Difference: 7800 (150%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 5570 is a better choice, and very much so. (explain)

Radeon HD 5570 5200 Mpixels/sec
GeForce 8400 GS 512MB 2600 Mpixels/sec
Difference: 2600 (100%)

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

Radeon HD 5570

Amazon.com

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 5570
Manufacturer nVidia AMD
Year June 2007 February 9, 2010
Code Name G86 Redwood PRO
Memory 512 MB 512 MB
Core Speed 650 MHz 650 MHz
Memory Speed 800 MHz 1800 MHz
Power (Max TDP) 40 watts 43 watts
Bandwidth 6400 MB/sec 28800 MB/sec
Texel Rate 5200 Mtexels/sec 13000 Mtexels/sec
Pixel Rate 2600 Mpixels/sec 5200 Mpixels/sec
Unified Shaders 16 400(80x5)
Texture Mapping Units 8 20
Render Output Units 4 8
Bus Type DDR2 DDR3
Bus Width 64-bit 128-bit
Fab Process 80 nm 40 nm
Transistors 210 million 627 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 (measured in MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 8400 GS 512MB

Amazon.com

Radeon HD 5570

Amazon.com

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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