GeForce GTX 465 vs GeForce GTX 860M

Intro

Compare those specs to the GeForce GTX 860M, which comes with clock speeds of 797 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 memory. It features 1152 SPUs as well as 96 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce GTX 465		200 Watts
	Difference: 155 Watts (344%)

Memory Bandwidth

The GeForce GTX 465, in theory, should perform much faster than the GeForce GTX 860M overall. (explain)

GeForce GTX 465		102592 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 38592 (60%)

Texel Rate

The GeForce GTX 860M will be a lot (approximately 186%) faster with regards to AF than the GeForce GTX 465. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 49804 (186%)

Pixel Rate

The GeForce GTX 465 will be much (approximately 52%) more effective at anti-aliasing than the GeForce GTX 860M, and also should be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 6672 (52%)

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 (measured in megabytes per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.