GeForce GT 240 GDDR5 1GB vs Radeon HD 5750 1GB

Intro

Compare those specs to the Radeon HD 5750 1GB, which uses a 40 nm design. AMD has set the core frequency at 700 MHz. The GDDR5 memory is set to run at a speed of 1150 MHz on this card. It features 720(144x5) SPUs along with 36 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB		70 Watts
Radeon HD 5750 1GB		86 Watts
	Difference: 16 Watts (23%)

Memory Bandwidth

In theory, the Radeon HD 5750 1GB will be 35% faster than the GeForce GT 240 GDDR5 1GB overall, because of its higher data rate. (explain)

Radeon HD 5750 1GB		73600 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 19200 (35%)

Texel Rate

The Radeon HD 5750 1GB should be a lot (more or less 43%) better at texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)

Radeon HD 5750 1GB		25200 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 7600 (43%)

Pixel Rate

The Radeon HD 5750 1GB should be quite a bit (about 155%) faster with regards to anti-aliasing than the GeForce GT 240 GDDR5 1GB, and should be capable of handling higher screen resolutions better. (explain)

Radeon HD 5750 1GB		11200 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 6800 (155%)

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 MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. 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 output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.