GeForce GTX 460 SE vs Radeon HD 5450

Intro

Compare all of that to the Radeon HD 5450, which has a GPU core clock speed of 650 MHz, and 512 MB of DDR3 memory running at 800 MHz through a 64-bit bus. It also is comprised of 80(16x5) 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 5450		19 Watts
GeForce GTX 460 SE		150 Watts
	Difference: 131 Watts (689%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 SE is 750% faster than the Radeon HD 5450 overall, due to its greater data rate. (explain)

GeForce GTX 460 SE		108800 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 96000 (750%)

Texel Rate

The GeForce GTX 460 SE should be much (about 500%) better at anisotropic filtering than the Radeon HD 5450. (explain)

GeForce GTX 460 SE		31200 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 26000 (500%)

Pixel Rate

The GeForce GTX 460 SE is much (approximately 700%) more effective at AA than the Radeon HD 5450, and should be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 460 SE		20800 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 18200 (700%)

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 MB per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.