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Radeon HD 3690/3830 vs Radeon HD 5570

Intro

The Radeon HD 3690/3830 has a GPU core speed of 668 MHz, and the 256 MB of GDDR3 memory runs at 828 MHz through a 128-bit bus. It also features 320(64x5) SPUs, 16 TAUs, and 16 ROPs.

Compare those specs to the Radeon HD 5570, which comes with GPU clock speed of 650 MHz, and 512 MB of DDR3 RAM set to run at 900 MHz through a 128-bit bus. It also is made up of 400(80x5) Stream Processors, 20 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570 43 Watts
Radeon HD 3690/3830 75 Watts
Difference: 32 Watts (74%)

Memory Bandwidth

In theory, the Radeon HD 5570 is 9% faster than the Radeon HD 3690/3830 in general, due to its greater bandwidth. (explain)

Radeon HD 5570 28800 MB/sec
Radeon HD 3690/3830 26496 MB/sec
Difference: 2304 (9%)

Texel Rate

The Radeon HD 5570 is much (approximately 22%) better at texture filtering than the Radeon HD 3690/3830. (explain)

Radeon HD 5570 13000 Mtexels/sec
Radeon HD 3690/3830 10688 Mtexels/sec
Difference: 2312 (22%)

Pixel Rate

The Radeon HD 3690/3830 is quite a bit (about 106%) faster with regards to AA than the Radeon HD 5570, and also able to handle higher screen resolutions more effectively. (explain)

Radeon HD 3690/3830 10688 Mpixels/sec
Radeon HD 5570 5200 Mpixels/sec
Difference: 5488 (106%)

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 3690/3830

Amazon.com

Check prices at:

Radeon HD 5570

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 Radeon HD 3690/3830 Radeon HD 5570
Manufacturer AMD AMD
Year 2008 February 9, 2010
Code Name RV670 PRO Redwood PRO
Memory 256 MB 512 MB
Core Speed 668 MHz 650 MHz
Memory Speed 1656 MHz 1800 MHz
Power (Max TDP) 75 watts 43 watts
Bandwidth 26496 MB/sec 28800 MB/sec
Texel Rate 10688 Mtexels/sec 13000 Mtexels/sec
Pixel Rate 10688 Mpixels/sec 5200 Mpixels/sec
Unified Shaders 320(64x5) 400(80x5)
Texture Mapping Units 16 20
Render Output Units 16 8
Bus Type GDDR3 DDR3
Bus Width 128-bit 128-bit
Fab Process 55 nm 40 nm
Transistors (Unknown) million 627 million
Bus PCIe 2.0 x16 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is worked out 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 3690/3830

Amazon.com

Check prices at:

Radeon HD 5570

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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