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Radeon HD 3650 vs Radeon HD 5830

Intro

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

Compare those specs to the Radeon HD 5830, which features clock speeds of 800 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 1120(224x5) SPUs along with 56 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 78 Watts
Radeon HD 5830 175 Watts
Difference: 97 Watts (124%)

Memory Bandwidth

The Radeon HD 5830 should in theory be a lot faster than the Radeon HD 3650 in general. (explain)

Radeon HD 5830 128000 MB/sec
Radeon HD 3650 25600 MB/sec
Difference: 102400 (400%)

Texel Rate

The Radeon HD 5830 should be quite a bit (approximately 672%) better at texture filtering than the Radeon HD 3650. (explain)

Radeon HD 5830 44800 Mtexels/sec
Radeon HD 3650 5800 Mtexels/sec
Difference: 39000 (672%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 5830 is superior to the Radeon HD 3650, by far. (explain)

Radeon HD 5830 12800 Mpixels/sec
Radeon HD 3650 2900 Mpixels/sec
Difference: 9900 (341%)

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 5830

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 5830
Manufacturer AMD AMD
Year 2008 February 25, 2010
Code Name RV635 PRO Cypress LE
Memory 1024 MB 1024 MB
Core Speed 725 MHz 800 MHz
Memory Speed 1600 MHz 4000 MHz
Power (Max TDP) 78 watts 175 watts
Bandwidth 25600 MB/sec 128000 MB/sec
Texel Rate 5800 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 2900 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 120(24x5) 1120(224x5)
Texture Mapping Units 8 56
Render Output Units 4 16
Bus Type GDDR4 GDDR5
Bus Width 128-bit 256-bit
Fab Process 55 nm 40 nm
Transistors (Unknown) million 2154 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 information (in units of megabytes per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 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 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 by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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Radeon HD 3650

Amazon.com

Check prices at:

Radeon HD 5830

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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