GeForce GTS 150 vs GeForce GTX 860M

Intro

Compare those specs to the GeForce GTX 860M, which features a core clock speed of 797 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is comprised of 1152 SPUs, 96 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce GTS 150		141 Watts
	Difference: 96 Watts (213%)

Memory Bandwidth

In theory, the GeForce GTX 860M should perform much faster than the GeForce GTS 150 in general. (explain)

GeForce GTX 860M		64000 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 32000 (100%)

Texel Rate

The GeForce GTX 860M will be much (about 62%) better at texture filtering than the GeForce GTS 150. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce GTS 150		47360 Mtexels/sec
	Difference: 29152 (62%)

Pixel Rate

The GeForce GTX 860M is just a bit (more or less 8%) more effective at FSAA than the GeForce GTS 150, and also capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 860M		12752 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 912 (8%)

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 transported past the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics 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 that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock 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 output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.