GeForce GTX 850M vs GeForce GTX 970M

Intro

Compare those specifications to the GeForce GTX 970M, which has a clock frequency of 924 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 192-bit bus, and uses a 28 nm design. It is comprised of 1280 SPUs, 80 TAUs, and 48 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 970M		7520 points
GeForce GTX 850M		3340 points
	Difference: 4180 (125%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce GTX 970M		75 Watts
	Difference: 35 Watts (88%)

Memory Bandwidth

The GeForce GTX 970M, in theory, should be much faster than the GeForce GTX 850M in general. (explain)

GeForce GTX 970M		96000 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 64000 (200%)

Texel Rate

The GeForce GTX 970M is much (about 111%) better at anisotropic filtering than the GeForce GTX 850M. (explain)

GeForce GTX 970M		73920 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 38880 (111%)

Pixel Rate

The GeForce GTX 970M will be much (approximately 216%) faster with regards to full screen anti-aliasing than the GeForce GTX 850M, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 970M		44352 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 30336 (216%)

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 past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses 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 amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. 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 fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.