GeForce GT 450 (OEM) vs Radeon HD 5750 512MB

Intro

Compare that to the Radeon HD 5750 512MB, which has a GPU core clock speed of 700 MHz, and 512 MB of GDDR5 RAM running at 1150 MHz through a 128-bit bus. It also is made up of 720(144x5) SPUs, 36 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 20 Watts (23%)

Memory Bandwidth

Performance-wise, the GeForce GT 450 (OEM) should theoretically be much superior to the Radeon HD 5750 512MB overall. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 22400 (30%)

Texel Rate

The Radeon HD 5750 512MB should be much (approximately 33%) faster with regards to anisotropic filtering than the GeForce GT 450 (OEM). (explain)

Radeon HD 5750 512MB		25200 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 6240 (33%)

Pixel Rate

The GeForce GT 450 (OEM) should be a lot (more or less 69%) better at anti-aliasing than the Radeon HD 5750 512MB, and also will be capable of handling higher resolutions more effectively. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 7760 (69%)

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 information (in units of MB per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, 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 texture map elements (texels) that are 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 higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.