GeForce GTX 560 vs GeForce GTX 850M

Intro

Compare all of that to the GeForce GTX 850M, which has a clock frequency of 876 MHz and a DDR3 memory frequency of 1000 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 850M		3340 points
GeForce GTX 560		3030 points
	Difference: 310 (10%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce GTX 560		150 Watts
	Difference: 110 Watts (275%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 560 is 300% faster than the GeForce GTX 850M overall, because of its higher data rate. (explain)

GeForce GTX 560		128128 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 96128 (300%)

Texel Rate

The GeForce GTX 560 will be a lot (more or less 29%) faster with regards to texture filtering than the GeForce GTX 850M. (explain)

GeForce GTX 560		45360 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 10320 (29%)

Pixel Rate

The GeForce GTX 560 is quite a bit (approximately 85%) better at anti-aliasing than the GeForce GTX 850M, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 560		25920 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 11904 (85%)

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 data (in units of MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR 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 is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, 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 graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.