GeForce GT 450 (OEM) vs Radeon HD 5970

Intro

Compare that to the Radeon HD 5970, which uses a 40 nm design. AMD has clocked the core speed at 725 MHz. The GDDR5 memory is set to run at a frequency of 1000 MHz on this model. It features 1600 SPUs as well as 160 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
Radeon HD 5970		294 Watts
	Difference: 188 Watts (177%)

Memory Bandwidth

The Radeon HD 5970, in theory, should perform much faster than the GeForce GT 450 (OEM) overall. (explain)

Radeon HD 5970		256000 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 160000 (167%)

Texel Rate

The Radeon HD 5970 should be much (about 1124%) faster with regards to texture filtering than the GeForce GT 450 (OEM). (explain)

Radeon HD 5970		232000 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 213040 (1124%)

Pixel Rate

The Radeon HD 5970 is a lot (more or less 389%) more effective at anti-aliasing than the GeForce GT 450 (OEM), and should be able to handle higher resolutions better. (explain)

Radeon HD 5970		92800 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 73840 (389%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per 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 better the texel rate, the better the 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 most pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.