GeForce GTS 250 1GB vs Radeon HD 5750 512MB

Intro

Compare that to the Radeon HD 5750 512MB, which has GPU core speed of 700 MHz, and 512 MB of GDDR5 memory set to run at 1150 MHz through a 128-bit bus. It also is made up of 720(144x5) Stream Processors, 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 512MB		86 Watts
GeForce GTS 250 1GB		145 Watts
	Difference: 59 Watts (69%)

Memory Bandwidth

Performance-wise, the Radeon HD 5750 512MB should in theory be a small bit superior to the GeForce GTS 250 1GB in general. (explain)

Radeon HD 5750 512MB		73600 MB/sec
GeForce GTS 250 1GB		70400 MB/sec
	Difference: 3200 (5%)

Texel Rate

The GeForce GTS 250 1GB will be quite a bit (approximately 87%) faster with regards to AF than the Radeon HD 5750 512MB. (explain)

GeForce GTS 250 1GB		47232 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 22032 (87%)

Pixel Rate

The GeForce GTS 250 1GB should be a small bit (about 5%) better at anti-aliasing than the Radeon HD 5750 512MB, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTS 250 1GB		11808 Mpixels/sec
Radeon HD 5750 512MB		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: Bandwidth is the max amount of data (measured in MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's 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 are applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.