GeForce GTS 450 vs Radeon HD 5750 512MB

Intro

Compare those specifications to the Radeon HD 5750 512MB, which has GPU core speed of 700 MHz, and 512 MB of GDDR5 memory running at 1150 MHz through a 128-bit bus. It also features 720(144x5) SPUs, 36 TAUs, 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 GTS 450		106 Watts
	Difference: 20 Watts (23%)

Memory Bandwidth

The Radeon HD 5750 512MB should in theory be a lot faster than the GeForce GTS 450 overall. (explain)

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

Texel Rate

The Radeon HD 5750 512MB will be just a bit (approximately 1%) better at AF than the GeForce GTS 450. (explain)

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

Pixel Rate

The GeForce GTS 450 is a small bit (more or less 12%) faster with regards to AA than the Radeon HD 5750 512MB, and also able to handle higher resolutions without losing too much performance. (explain)

GeForce GTS 450		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: Memory bandwidth is the max amount of data (counted in MB per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.