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Radeon HD 3650 256MB vs Radeon HD 5830

Intro

The Radeon HD 3650 256MB comes with a GPU core clock speed of 725 MHz, and the 256 MB of DDR2 memory runs at 800 MHz through a 128-bit bus. It also features 120(24x5) Stream Processors, 8 TAUs, and 4 Raster Operation Units.

Compare all of that to the Radeon HD 5830, which features core clock speeds of 800 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 1120(224x5) SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 256MB 78 Watts
Radeon HD 5830 175 Watts
Difference: 97 Watts (124%)

Memory Bandwidth

Theoretically, the Radeon HD 5830 should be much faster than the Radeon HD 3650 256MB overall. (explain)

Radeon HD 5830 128000 MB/sec
Radeon HD 3650 256MB 25600 MB/sec
Difference: 102400 (400%)

Texel Rate

The Radeon HD 5830 is quite a bit (more or less 672%) faster with regards to AF than the Radeon HD 3650 256MB. (explain)

Radeon HD 5830 44800 Mtexels/sec
Radeon HD 3650 256MB 5800 Mtexels/sec
Difference: 39000 (672%)

Pixel Rate

The Radeon HD 5830 is a lot (approximately 341%) better at AA than the Radeon HD 3650 256MB, and also will be capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 5830 12800 Mpixels/sec
Radeon HD 3650 256MB 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 256MB

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 256MB Radeon HD 5830
Manufacturer AMD AMD
Year 2008 February 25, 2010
Code Name RV635 PRO Cypress LE
Memory 256 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 DDR2 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 largest amount of information (counted in MB per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 3650 256MB

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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