GeForce GTS 450 vs Radeon HD 3650 512MB

Intro

Compare all of that to the Radeon HD 3650 512MB, which has a clock speed of 725 MHz and a GDDR3 memory frequency of 800 MHz. It also uses a 128-bit bus, and uses a 55 nm design. It features 120(24x5) SPUs, 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 512MB		78 Watts
GeForce GTS 450		106 Watts
	Difference: 28 Watts (36%)

Memory Bandwidth

The GeForce GTS 450, in theory, should perform much faster than the Radeon HD 3650 512MB in general. (explain)

GeForce GTS 450		57728 MB/sec
Radeon HD 3650 512MB		25600 MB/sec
	Difference: 32128 (126%)

Texel Rate

The GeForce GTS 450 is quite a bit (approximately 332%) faster with regards to AF than the Radeon HD 3650 512MB. (explain)

GeForce GTS 450		25056 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 19256 (332%)

Pixel Rate

The GeForce GTS 450 should be a lot (more or less 332%) faster with regards to FSAA than the Radeon HD 3650 512MB, and also able to handle higher screen resolutions better. (explain)

GeForce GTS 450		12528 Mpixels/sec
Radeon HD 3650 512MB		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: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high 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 of the card 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 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 amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on 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 potential to reach the max fill rate.