GeForce GT 240 GDDR5 1GB vs GeForce GTX 965M

Intro

Compare all of that to the GeForce GTX 965M, which makes use of a 28 nm design. nVidia has set the core speed at 944 MHz. The GDDR5 memory is set to run at a frequency of 1000 MHz on this specific model. It features 1024 SPUs as well as 64 TAUs 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 1GB		70 Watts
	Difference: 10 Watts (17%)

Memory Bandwidth

In theory, the GeForce GTX 965M will be 18% faster than the GeForce GT 240 GDDR5 1GB in general, because of its higher bandwidth. (explain)

GeForce GTX 965M		64000 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 9600 (18%)

Texel Rate

The GeForce GTX 965M is quite a bit (more or less 243%) better at texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)

GeForce GTX 965M		60416 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 42816 (243%)

Pixel Rate

The GeForce GTX 965M is a lot (approximately 587%) more effective at full screen anti-aliasing than the GeForce GT 240 GDDR5 1GB, and also will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 965M		30208 Mpixels/sec
GeForce GT 240 GDDR5 1GB		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: Memory bandwidth is the max amount of data (in units of MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. 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 many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.