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GeForce 8400 GS 512MB vs Radeon HD 6570 (OEM) 1GB

Intro

The GeForce 8400 GS 512MB has core clock 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 6570 (OEM) 1GB, which has a core clock speed of 650 MHz and a GDDR3 memory speed of 900 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It features 480 SPUs, 24 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8400 GS 512MB 40 Watts
Radeon HD 6570 (OEM) 1GB 50 Watts
Difference: 10 Watts (25%)

Memory Bandwidth

The Radeon HD 6570 (OEM) 1GB should in theory perform quite a bit faster than the GeForce 8400 GS 512MB in general. (explain)

Radeon HD 6570 (OEM) 1GB 28800 MB/sec
GeForce 8400 GS 512MB 6400 MB/sec
Difference: 22400 (350%)

Texel Rate

The Radeon HD 6570 (OEM) 1GB will be quite a bit (approximately 200%) more effective at AF than the GeForce 8400 GS 512MB. (explain)

Radeon HD 6570 (OEM) 1GB 15600 Mtexels/sec
GeForce 8400 GS 512MB 5200 Mtexels/sec
Difference: 10400 (200%)

Pixel Rate

The Radeon HD 6570 (OEM) 1GB should be much (about 100%) better at AA than the GeForce 8400 GS 512MB, and should be capable of handling higher resolutions more effectively. (explain)

Radeon HD 6570 (OEM) 1GB 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

Check prices at:

Radeon HD 6570 (OEM) 1GB

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 6570 (OEM) 1GB
Manufacturer nVidia AMD
Year June 2007 February 2011
Code Name G86 Turks
Memory 512 MB 1024 MB
Core Speed 650 MHz 650 MHz
Memory Speed 800 MHz 1800 MHz
Power (Max TDP) 40 watts 50 watts
Bandwidth 6400 MB/sec 28800 MB/sec
Texel Rate 5200 Mtexels/sec 15600 Mtexels/sec
Pixel Rate 2600 Mpixels/sec 5200 Mpixels/sec
Unified Shaders 16 480
Texture Mapping Units 8 24
Render Output Units 4 8
Bus Type DDR2 GDDR3
Bus Width 64-bit 128-bit
Fab Process 80 nm 40 nm
Transistors 210 million 715 million
Bus PCIe x16, PCI PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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

Display Prices

Hide Prices

GeForce 8400 GS 512MB

Amazon.com

Check prices at:

Radeon HD 6570 (OEM) 1GB

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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