GeForce GT 240 GDDR5 1GB vs Geforce GTX 670

Intro

Compare those specifications to the Geforce GTX 670, which has core clock speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 RAM. It features 1344 SPUs along with 112 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB		70 Watts
Geforce GTX 670		170 Watts
	Difference: 100 Watts (143%)

Memory Bandwidth

In theory, the Geforce GTX 670 should be a lot faster than the GeForce GT 240 GDDR5 1GB in general. (explain)

Geforce GTX 670		192000 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 137600 (253%)

Texel Rate

The Geforce GTX 670 is quite a bit (approximately 482%) more effective at anisotropic filtering than the GeForce GT 240 GDDR5 1GB. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 84880 (482%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 670 is a better choice, by far. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 24880 (565%)

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 (measured in MB per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. 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 number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.