GeForce GTS 450 vs Radeon HD 5750 512MB

Intro

Compare that to the Radeon HD 5750 512MB, which features a core clock speed of 700 MHz and a GDDR5 memory frequency of 1150 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It is comprised of 720(144x5) SPUs, 36 TAUs, 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		106 Watts
	Difference: 20 Watts (23%)

Memory Bandwidth

In theory, the Radeon HD 5750 512MB should be 27% faster than the GeForce GTS 450 overall, due to its higher data rate. (explain)

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

Texel Rate

The Radeon HD 5750 512MB is a bit (more or less 1%) better at anisotropic filtering 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 should be a small bit (approximately 12%) more effective at anti-aliasing than the Radeon HD 5750 512MB, and capable of handling higher screen resolutions without slowing down too much. (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: Bandwidth is the maximum amount of data (measured in MB per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 - the lower the bandwidth is, the lower the ability to get to the max fill rate.