GeForce GTX 560 vs GeForce GTX 850M

Intro

Compare those specifications to the GeForce GTX 850M, which comes with a clock frequency of 876 MHz and a DDR3 memory speed of 1000 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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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% quicker than the GeForce GTX 850M overall, because of its higher bandwidth. (explain)

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

Texel Rate

The GeForce GTX 560 should be a lot (more or less 29%) better at anisotropic 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 much (more or less 85%) better at FSAA than the GeForce GTX 850M, and will be capable of handling higher resolutions while still performing well. (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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total texture units 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines 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 output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.