GeForce GTX 650 Ti 2GB vs GeForce GTX 860M

Intro

Compare all of 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 RAM works at a frequency of 1000 MHz on this model. It features 1152 SPUs along with 96 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce GTX 650 Ti 2GB		110 Watts
	Difference: 65 Watts (144%)

Memory Bandwidth

The GeForce GTX 650 Ti 2GB should in theory perform much faster than the GeForce GTX 860M in general. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 22400 (35%)

Texel Rate

The GeForce GTX 860M will be much (approximately 29%) faster with regards to AF than the GeForce GTX 650 Ti 2GB. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 17120 (29%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 650 Ti 2GB is the winner, but it probably won't make a huge difference. (explain)

GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 2096 (16%)

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 maximum amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better 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 processed per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.