GeForce GT 240 GDDR5 vs Radeon HD 7750

Intro

Compare all that to the Radeon HD 7750, which has a clock frequency of 800 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is comprised of 512 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
GeForce GT 240 GDDR5		70 Watts
	Difference: 15 Watts (27%)

Memory Bandwidth

In theory, the Radeon HD 7750 should be a lot faster than the GeForce GT 240 GDDR5 in general. (explain)

Radeon HD 7750		72000 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 17600 (32%)

Texel Rate

The Radeon HD 7750 should be quite a bit (about 45%) faster with regards to texture filtering than the GeForce GT 240 GDDR5. (explain)

Radeon HD 7750		25600 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 8000 (45%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 7750 is the winner, by a large margin. (explain)

Radeon HD 7750		12800 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 8400 (191%)

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 maximum amount of data (in units of megabytes per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.