GeForce GTS 450 vs Radeon HD 3650 256MB

Intro

Compare those specs to the Radeon HD 3650 256MB, which comes with GPU 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 made up of 120(24x5) Stream Processors, 8 Texture Address Units, 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 GTS 450		106 Watts
	Difference: 28 Watts (36%)

Memory Bandwidth

The GeForce GTS 450, in theory, should perform quite a bit faster than the Radeon HD 3650 256MB in general. (explain)

GeForce GTS 450		57728 MB/sec
Radeon HD 3650 256MB		25600 MB/sec
	Difference: 32128 (126%)

Texel Rate

The GeForce GTS 450 will be a lot (more or less 332%) faster with regards to texture filtering than the Radeon HD 3650 256MB. (explain)

GeForce GTS 450		25056 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 19256 (332%)

Pixel Rate

The GeForce GTS 450 is a lot (approximately 332%) faster with regards to anti-aliasing than the Radeon HD 3650 256MB, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTS 450		12528 Mpixels/sec
Radeon HD 3650 256MB		2900 Mpixels/sec
	Difference: 9628 (332%)

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 max amount of data (measured in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core 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 fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.