GeForce GTS 450 1GB vs Radeon HD 5750 512MB

Intro

Compare those specs to the Radeon HD 5750 512MB, which makes use of a 40 nm design. AMD has clocked the core frequency at 700 MHz. The GDDR5 memory works at a frequency of 1150 MHz on this card. It features 720(144x5) SPUs along with 36 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 20 Watts (23%)

Memory Bandwidth

Theoretically, the Radeon HD 5750 512MB should perform quite a bit faster than the GeForce GTS 450 1GB overall. (explain)

Radeon HD 5750 512MB		73600 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 15872 (27%)

Texel Rate

The Radeon HD 5750 512MB should be just a bit (more or less 1%) faster with regards to AF than the GeForce GTS 450 1GB. (explain)

Radeon HD 5750 512MB		25200 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 144 (1%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTS 450 1GB is superior to the Radeon HD 5750 512MB, but not by far. (explain)

GeForce GTS 450 1GB		12528 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 1328 (12%)

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 data (counted 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 interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's 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 can be applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics 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 that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.