GeForce GT 240 GDDR5 vs Radeon HD 7950 3GB

Intro

Compare that to the Radeon HD 7950 3GB, which features a core clock speed of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 384-bit memory bus, and uses a 28 nm design. It features 1792 SPUs, 112 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5		70 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 130 Watts (186%)

Memory Bandwidth

In theory, the Radeon HD 7950 3GB should be 341% quicker than the GeForce GT 240 GDDR5 overall, due to its higher bandwidth. (explain)

Radeon HD 7950 3GB		240000 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 185600 (341%)

Texel Rate

The Radeon HD 7950 3GB will be quite a bit (approximately 409%) faster with regards to AF than the GeForce GT 240 GDDR5. (explain)

Radeon HD 7950 3GB		89600 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 72000 (409%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 7950 3GB is superior to the GeForce GT 240 GDDR5, by a large margin. (explain)

Radeon HD 7950 3GB		25600 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 21200 (482%)

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 megabytes per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video 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 maximum number of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.