Radeon HD 3650 vs Radeon HD 5830

Intro

Compare those specs to the Radeon HD 5830, which features a core clock frequency of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit memory bus, and uses a 40 nm design. It features 1120(224x5) SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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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

Theoretically speaking, the Radeon HD 5830 should be 400% quicker than the Radeon HD 3650 in general, due to its greater data rate. (explain)

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

Texel Rate

The Radeon HD 5830 should be much (approximately 672%) better at AF 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 a high screen resolution is important to you, then the Radeon HD 5830 is a better choice, 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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core 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 rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.