GeForce GTX 480 vs Radeon HD 3650 256MB

Intro

Compare that to the Radeon HD 3650 256MB, which features a GPU core clock speed of 725 MHz, and 256 MB of DDR2 RAM set to run at 800 MHz through a 128-bit bus. It also is comprised of 120(24x5) Stream Processors, 8 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 256MB		78 Watts
GeForce GTX 480		250 Watts
	Difference: 172 Watts (221%)

Memory Bandwidth

The GeForce GTX 480 should theoretically be much faster than the Radeon HD 3650 256MB in general. (explain)

GeForce GTX 480		177408 MB/sec
Radeon HD 3650 256MB		25600 MB/sec
	Difference: 151808 (593%)

Texel Rate

The GeForce GTX 480 should be a lot (approximately 624%) faster with regards to AF than the Radeon HD 3650 256MB. (explain)

GeForce GTX 480		42000 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 36200 (624%)

Pixel Rate

The GeForce GTX 480 is a lot (approximately 1059%) better at FSAA than the Radeon HD 3650 256MB, and capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 480		33600 Mpixels/sec
Radeon HD 3650 256MB		2900 Mpixels/sec
	Difference: 30700 (1059%)

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 information (measured in megabytes per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 are processed per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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