GeForce GTS 150 vs GeForce GTX 870M

Intro

Compare all that to the GeForce GTX 870M, which has a clock frequency of 941 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 192-bit memory bus, and uses a 28 nm design. It is comprised of 1344 SPUs, 112 Texture Address Units, and 24 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M		110 Watts
GeForce GTS 150		141 Watts
	Difference: 31 Watts (28%)

Memory Bandwidth

In theory, the GeForce GTX 870M should be 200% faster than the GeForce GTS 150 overall, due to its higher bandwidth. (explain)

GeForce GTX 870M		96000 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 64000 (200%)

Texel Rate

The GeForce GTX 870M is a lot (more or less 123%) better at texture filtering than the GeForce GTS 150. (explain)

GeForce GTX 870M		105392 Mtexels/sec
GeForce GTS 150		47360 Mtexels/sec
	Difference: 58032 (123%)

Pixel Rate

The GeForce GTX 870M is quite a bit (more or less 91%) faster with regards to full screen anti-aliasing than the GeForce GTS 150, and also should be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 870M		22584 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 10744 (91%)

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 max amount of information (counted in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video 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 maximum number of pixels that the graphics card can possibly record to the local memory in a 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 called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.