GeForce GTS 450 1GB vs Radeon HD 5750 1GB

Intro

Compare those specs to the Radeon HD 5750 1GB, which uses a 40 nm design. AMD has clocked the core speed at 700 MHz. The GDDR5 RAM works at a speed of 1150 MHz on this particular model. It features 720(144x5) SPUs along with 36 TAUs and 16 Rasterization Operator Units.

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 in theory be a lot better than 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 will be just a bit (about 1%) better at 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 a high screen resolution is important to you, then the GeForce GTS 450 1GB is the winner, not by a very large margin though. (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: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 are processed per second. This figure is worked out by multiplying the total number of texture units 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 applied per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. 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 rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.