GeForce GTX 470 vs GeForce GTX 850M

Intro

Compare all of that to the GeForce GTX 850M, which comes with a GPU core clock speed of 876 MHz, and 2048 MB of DDR3 memory running at 1000 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 TAUs, 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 470		2937 points
	Difference: 403 (14%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce GTX 470		215 Watts
	Difference: 175 Watts (438%)

Memory Bandwidth

The GeForce GTX 470, in theory, should perform a lot faster than the GeForce GTX 850M in general. (explain)

GeForce GTX 470		133920 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 101920 (319%)

Texel Rate

The GeForce GTX 850M should be a little bit (about 3%) better at AF than the GeForce GTX 470. (explain)

GeForce GTX 850M		35040 Mtexels/sec
GeForce GTX 470		33992 Mtexels/sec
	Difference: 1048 (3%)

Pixel Rate

The GeForce GTX 470 should be quite a bit (more or less 73%) more effective at anti-aliasing than the GeForce GTX 850M, and also capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 470		24280 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 10264 (73%)

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 (measured in MB per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to 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 bandwidth is, the lower the potential to get to the max fill rate.