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Radeon HD 3650 vs Radeon HD 5570

Intro

The Radeon HD 3650 comes with a core clock frequency of 725 MHz and a GDDR4 memory speed of 800 MHz. It also uses a 128-bit memory bus, and uses a 55 nm design. It is made up of 120(24x5) SPUs, 8 TAUs, and 4 ROPs.

Compare all that to the Radeon HD 5570, which comes with core clock speeds of 650 MHz on the GPU, and 900 MHz on the 512 MB of DDR3 RAM. It features 400(80x5) SPUs along with 20 Texture Address Units and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

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

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

Texel Rate

The Radeon HD 5570 is quite a bit (more or less 124%) more effective at texture filtering than the Radeon HD 3650. (explain)

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

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 5570 is superior to the Radeon HD 3650, by far. (explain)

Radeon HD 5570 5200 Mpixels/sec
Radeon HD 3650 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

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 3650 Radeon HD 5570
Manufacturer AMD AMD
Year 2008 February 9, 2010
Code Name RV635 PRO Redwood PRO
Memory 1024 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 GDDR4 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 largest amount of information (measured in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory per 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 - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon HD 3650

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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