GeForce GTS 450 1GB vs Radeon HD 5750 1GB

Intro

Compare those specifications to the Radeon HD 5750 1GB, which features a core clock speed of 700 MHz and a GDDR5 memory speed of 1150 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It is made up 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 1GB		86 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 20 Watts (23%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5750 1GB should theoretically be much superior to the GeForce GTS 450 1GB in general. (explain)

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

Texel Rate

The Radeon HD 5750 1GB is a small bit (about 1%) faster with regards to AF than the GeForce GTS 450 1GB. (explain)

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

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTS 450 1GB is a better choice, but not by far. (explain)

GeForce GTS 450 1GB		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 maximum amount of information (counted in megabytes per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, it should 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one 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 this number, the better the 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 that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.