GeForce GT 240 GDDR5 1GB vs GeForce GTX 660

Intro

Compare those specs to the GeForce GTX 660, which has clock speeds of 980 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 RAM. It features 960 SPUs along with 80 TAUs and 24 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB		70 Watts
GeForce GTX 660		140 Watts
	Difference: 70 Watts (100%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 660 should theoretically be a lot superior to the GeForce GT 240 GDDR5 1GB in general. (explain)

GeForce GTX 660		144192 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 89792 (165%)

Texel Rate

The GeForce GTX 660 will be quite a bit (approximately 345%) more effective at anisotropic filtering than the GeForce GT 240 GDDR5 1GB. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 60800 (345%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 660 is a better choice, and very much so. (explain)

GeForce GTX 660		23520 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 19120 (435%)

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 information (measured in megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock 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 fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.