GeForce GT 240 GDDR5 1GB vs Radeon HD 5750 512MB

Intro

Compare all that to the Radeon HD 5750 512MB, which comes with a clock speed of 700 MHz and a GDDR5 memory frequency of 1150 MHz. It also features a 128-bit 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)

GeForce GT 240 GDDR5 1GB		70 Watts
Radeon HD 5750 512MB		86 Watts
	Difference: 16 Watts (23%)

Memory Bandwidth

The Radeon HD 5750 512MB, in theory, should perform much faster than the GeForce GT 240 GDDR5 1GB overall. (explain)

Radeon HD 5750 512MB		73600 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 19200 (35%)

Texel Rate

The Radeon HD 5750 512MB is a lot (approximately 43%) faster with regards to texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)

Radeon HD 5750 512MB		25200 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 7600 (43%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 5750 512MB is a better choice, by far. (explain)

Radeon HD 5750 512MB		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: Bandwidth is the largest amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip 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 Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.