GeForce GTX 465 vs GeForce GTX 860M

Intro

Compare all that to the GeForce GTX 860M, which makes use of a 28 nm design. nVidia has set the core speed at 797 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this model. 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

In theory, the GeForce GTX 465 is 60% quicker than the GeForce GTX 860M overall, because of its greater bandwidth. (explain)

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

Texel Rate

The GeForce GTX 860M should be quite a bit (about 186%) better at 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%) faster with regards to full screen anti-aliasing than the GeForce GTX 860M, and also will 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 information (in units of MB per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the 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 most pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel 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 reach the maximum fill rate.