Radeon HD 3650 512MB vs Radeon HD 5830

Intro

Compare those specs to the Radeon HD 5830, which comes with a GPU core clock speed of 800 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz through a 256-bit bus. It also is comprised of 1120(224x5) Stream Processors, 56 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 512MB		78 Watts
Radeon HD 5830		175 Watts
	Difference: 97 Watts (124%)

Memory Bandwidth

In theory, the Radeon HD 5830 should be quite a bit faster than the Radeon HD 3650 512MB in general. (explain)

Radeon HD 5830		128000 MB/sec
Radeon HD 3650 512MB		25600 MB/sec
	Difference: 102400 (400%)

Texel Rate

The Radeon HD 5830 will be a lot (about 672%) more effective at anisotropic filtering than the Radeon HD 3650 512MB. (explain)

Radeon HD 5830		44800 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 39000 (672%)

Pixel Rate

The Radeon HD 5830 should be a lot (more or less 341%) better at anti-aliasing than the Radeon HD 3650 512MB, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 5830		12800 Mpixels/sec
Radeon HD 3650 512MB		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: Bandwidth is the maximum amount of data (measured in MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.