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Radeon HD 5570 vs Radeon HD 6450 (OEM)

Intro

The Radeon HD 5570 uses a 40 nm design. AMD has clocked the core frequency at 650 MHz. The DDR3 RAM runs at a speed of 900 MHz on this particular model. It features 400(80x5) SPUs along with 20 Texture Address Units and 8 ROPs.

Compare those specs to the Radeon HD 6450 (OEM), which uses a 40 nm design. AMD has set the core frequency at 625 MHz. The GDDR3 memory runs at a frequency of 800 MHz on this specific card. It features 160 SPUs as well as 8 Texture Address Units and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 31 Watts
Radeon HD 5570 43 Watts
Difference: 12 Watts (39%)

Memory Bandwidth

The Radeon HD 5570, in theory, should perform quite a bit faster than the Radeon HD 6450 (OEM) overall. (explain)

Radeon HD 5570 28800 MB/sec
Radeon HD 6450 (OEM) 12800 MB/sec
Difference: 16000 (125%)

Texel Rate

The Radeon HD 5570 is a lot (approximately 160%) more effective at AF than the Radeon HD 6450 (OEM). (explain)

Radeon HD 5570 13000 Mtexels/sec
Radeon HD 6450 (OEM) 5000 Mtexels/sec
Difference: 8000 (160%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 5570 is a better choice, by far. (explain)

Radeon HD 5570 5200 Mpixels/sec
Radeon HD 6450 (OEM) 2500 Mpixels/sec
Difference: 2700 (108%)

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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Radeon HD 5570

Amazon.com

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Radeon HD 6450 (OEM)

Amazon.com

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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 Radeon HD 5570 Radeon HD 6450 (OEM)
Manufacturer AMD AMD
Year February 9, 2010 February 2011
Code Name Redwood PRO Caicos
Memory 512 MB 512 MB
Core Speed 650 MHz 625 MHz
Memory Speed 1800 MHz 1600 MHz
Power (Max TDP) 43 watts 31 watts
Bandwidth 28800 MB/sec 12800 MB/sec
Texel Rate 13000 Mtexels/sec 5000 Mtexels/sec
Pixel Rate 5200 Mpixels/sec 2500 Mpixels/sec
Unified Shaders 400(80x5) 160
Texture Mapping Units 20 8
Render Output Units 8 4
Bus Type DDR3 GDDR3
Bus Width 128-bit 64-bit
Fab Process 40 nm 40 nm
Transistors 627 million 370 million
Bus PCIe 2.1 x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Radeon HD 5570

Amazon.com

Check prices at:

Radeon HD 6450 (OEM)

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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