GeForce GT 240 GDDR5 vs GeForce GTX 650 Ti

Intro

Compare that to the GeForce GTX 650 Ti, which comes with a clock speed of 928 MHz and a GDDR5 memory frequency of 1350 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It features 768 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

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		110 Watts
	Difference: 40 Watts (57%)

Memory Bandwidth

The GeForce GTX 650 Ti, in theory, should be much faster than the GeForce GT 240 GDDR5 in general. (explain)

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

Texel Rate

The GeForce GTX 650 Ti is quite a bit (about 237%) better at texture filtering than the GeForce GT 240 GDDR5. (explain)

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

Pixel Rate

The GeForce GTX 650 Ti is quite a bit (more or less 237%) faster with regards to full screen anti-aliasing than the GeForce GT 240 GDDR5, and also should be able to handle higher resolutions more effectively. (explain)

GeForce GTX 650 Ti		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 maximum amount of data (in units of MB per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could 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 ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.