GeForce 920M vs GeForce GTX 850M

Intro

Compare all of that to the GeForce GTX 850M, which has GPU core speed of 876 MHz, and 2048 MB of DDR3 RAM set to run at 1000 MHz through a 128-bit bus. It also features 640 SPUs, 40 TAUs, and 16 ROPs.

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 920M		1180 points
	Difference: 2160 (183%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 850M should perform a lot faster than the GeForce 920M in general. (explain)

GeForce GTX 850M		32000 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 17600 (122%)

Texel Rate

The GeForce GTX 850M should be just a bit (approximately 15%) more effective at AF than the GeForce 920M. (explain)

GeForce GTX 850M		35040 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 4512 (15%)

Pixel Rate

The GeForce GTX 850M will be a lot (about 84%) better at anti-aliasing than the GeForce 920M, and will be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 850M		14016 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 6384 (84%)

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 moved across the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If it uses 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 texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units of the card by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core 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 is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.