GeForce GT 240 GDDR5 vs GeForce GTX 965M

Intro

Compare all that to the GeForce GTX 965M, which makes use of a 28 nm design. nVidia has set the core frequency at 944 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this card. It features 1024 SPUs as well as 64 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
GeForce GT 240 GDDR5		70 Watts
	Difference: 10 Watts (17%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 965M should perform a small bit faster than the GeForce GT 240 GDDR5 overall. (explain)

GeForce GTX 965M		64000 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 9600 (18%)

Texel Rate

The GeForce GTX 965M should be quite a bit (more or less 243%) better at texture filtering than the GeForce GT 240 GDDR5. (explain)

GeForce GTX 965M		60416 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 42816 (243%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 965M is a better choice, by far. (explain)

GeForce GTX 965M		30208 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 25808 (587%)

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 largest amount of information (measured in megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 number of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.