GeForce GT 450 (OEM) vs Radeon HD 5750 1GB

Intro

Compare that to the Radeon HD 5750 1GB, which uses a 40 nm design. AMD has clocked the core frequency at 700 MHz. The GDDR5 memory is set to run at a frequency of 1150 MHz on this particular model. It features 720(144x5) SPUs along with 36 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 20 Watts (23%)

Memory Bandwidth

In theory, the GeForce GT 450 (OEM) should be a lot faster than the Radeon HD 5750 1GB overall. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 22400 (30%)

Texel Rate

The Radeon HD 5750 1GB should be much (approximately 33%) faster with regards to anisotropic filtering than the GeForce GT 450 (OEM). (explain)

Radeon HD 5750 1GB		25200 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 6240 (33%)

Pixel Rate

The GeForce GT 450 (OEM) will be a lot (approximately 69%) faster with regards to full screen anti-aliasing than the Radeon HD 5750 1GB, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon HD 5750 1GB		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 maximum amount of information (measured in megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at 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 the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.