GeForce GTS 250 1GB vs Radeon HD 5750 1GB

Intro

Compare all that to the Radeon HD 5750 1GB, which comes with a clock speed of 700 MHz and a GDDR5 memory frequency of 1150 MHz. It also features a 128-bit memory bus, and uses a 40 nm design. It is comprised of 720(144x5) SPUs, 36 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
GeForce GTS 250 1GB		145 Watts
	Difference: 59 Watts (69%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5750 1GB should in theory be a small bit superior to the GeForce GTS 250 1GB in general. (explain)

Radeon HD 5750 1GB		73600 MB/sec
GeForce GTS 250 1GB		70400 MB/sec
	Difference: 3200 (5%)

Texel Rate

The GeForce GTS 250 1GB should be a lot (approximately 87%) more effective at texture filtering than the Radeon HD 5750 1GB. (explain)

GeForce GTS 250 1GB		47232 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 22032 (87%)

Pixel Rate

The GeForce GTS 250 1GB is a bit (more or less 5%) better at anti-aliasing than the Radeon HD 5750 1GB, and also able to handle higher screen resolutions more effectively. (explain)

GeForce GTS 250 1GB		11808 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 608 (5%)

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 maximum amount of information (measured in megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 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 AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units 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 fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.