GeForce GT 240 GDDR5 vs GeForce GTX 650 Ti 2GB

Intro

Compare all of that to the GeForce GTX 650 Ti 2GB, which has a GPU core clock speed of 928 MHz, and 2048 MB of GDDR5 RAM running at 1350 MHz through a 128-bit bus. It also is comprised of 768 SPUs, 64 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5		70 Watts
GeForce GTX 650 Ti 2GB		110 Watts
	Difference: 40 Watts (57%)

Memory Bandwidth

In theory, the GeForce GTX 650 Ti 2GB will be 59% quicker than the GeForce GT 240 GDDR5 overall, due to its higher data rate. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 32000 (59%)

Texel Rate

The GeForce GTX 650 Ti 2GB should be a lot (more or less 237%) better at anisotropic filtering than the GeForce GT 240 GDDR5. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 41792 (237%)

Pixel Rate

The GeForce GTX 650 Ti 2GB is a lot (approximately 237%) faster with regards to AA than the GeForce GT 240 GDDR5, and capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 10448 (237%)

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 max amount of information (in units of MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels 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 the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.