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Radeon HD 3650 256MB vs Radeon HD 5830

Intro

The Radeon HD 3650 256MB has a clock speed of 725 MHz and a DDR2 memory speed of 800 MHz. It also makes use of a 128-bit memory bus, and uses a 55 nm design. It is comprised of 120(24x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

Compare those specs to the Radeon HD 5830, which has a clock frequency of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 256-bit memory bus, and uses a 40 nm design. It is comprised of 1120(224x5) SPUs, 56 Texture Address Units, and 16 ROPs.

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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

The Radeon HD 5830 should theoretically be much faster than the Radeon HD 3650 256MB in general. (explain)

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

Texel Rate

The Radeon HD 5830 is a lot (more or less 672%) more effective at texture filtering 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 quite a bit (about 341%) more effective at AA than the Radeon HD 3650 256MB, and also should be able to handle higher screen resolutions better. (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: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video 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 most pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach 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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