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Radeon HD 3650 512MB vs Radeon HD 5570

Intro

The Radeon HD 3650 512MB makes use of a 55 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR3 memory works at a frequency of 800 MHz on this card. It features 120(24x5) SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

Compare all of that to the Radeon HD 5570, which has a clock speed of 650 MHz and a DDR3 memory frequency of 900 MHz. It also features a 128-bit memory bus, and uses a 40 nm design. It features 400(80x5) SPUs, 20 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570 43 Watts
Radeon HD 3650 512MB 78 Watts
Difference: 35 Watts (81%)

Memory Bandwidth

Performance-wise, the Radeon HD 5570 should theoretically be a bit better than the Radeon HD 3650 512MB in general. (explain)

Radeon HD 5570 28800 MB/sec
Radeon HD 3650 512MB 25600 MB/sec
Difference: 3200 (13%)

Texel Rate

The Radeon HD 5570 should be much (about 124%) more effective at AF than the Radeon HD 3650 512MB. (explain)

Radeon HD 5570 13000 Mtexels/sec
Radeon HD 3650 512MB 5800 Mtexels/sec
Difference: 7200 (124%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 5570 is superior to the Radeon HD 3650 512MB, by a large margin. (explain)

Radeon HD 5570 5200 Mpixels/sec
Radeon HD 3650 512MB 2900 Mpixels/sec
Difference: 2300 (79%)

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 3650 512MB

Amazon.com

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Radeon HD 5570

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 3650 512MB Radeon HD 5570
Manufacturer AMD AMD
Year 2008 February 9, 2010
Code Name RV635 PRO Redwood PRO
Memory 512 MB 512 MB
Core Speed 725 MHz 650 MHz
Memory Speed 1600 MHz 1800 MHz
Power (Max TDP) 78 watts 43 watts
Bandwidth 25600 MB/sec 28800 MB/sec
Texel Rate 5800 Mtexels/sec 13000 Mtexels/sec
Pixel Rate 2900 Mpixels/sec 5200 Mpixels/sec
Unified Shaders 120(24x5) 400(80x5)
Texture Mapping Units 8 20
Render Output Units 4 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/AGP 8x 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 maximum amount of data (in units of megabytes per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it must 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, 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 maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also 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 memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon HD 3650 512MB

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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