GeForce GTS 450 vs Radeon HD 5750 1GB

Intro

Compare all that to the Radeon HD 5750 1GB, which features core clock speeds of 700 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 memory. It features 720(144x5) SPUs as well as 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 GTS 450		106 Watts
	Difference: 20 Watts (23%)

Memory Bandwidth

Performance-wise, the Radeon HD 5750 1GB should in theory be much superior to the GeForce GTS 450 overall. (explain)

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

Texel Rate

The Radeon HD 5750 1GB will be just a bit (approximately 1%) faster with regards to texture filtering than the GeForce GTS 450. (explain)

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

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTS 450 is the winner, but only just. (explain)

GeForce GTS 450		12528 Mpixels/sec
Radeon HD 5750 1GB		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 (measured in megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must 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 anti-aliasing, 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 calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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