GeForce GTX 850M vs GeForce GTX 980

Intro

Compare all of that to the GeForce GTX 980, which has a GPU core clock speed of 1126 MHz, and 4096 MB of GDDR5 memory running at 1750 MHz through a 256-bit bus. It also is comprised of 2048 Stream Processors, 128 Texture Address Units, and 64 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 980		13552 points
GeForce GTX 850M		3340 points
	Difference: 10212 (306%)

Zcash Mining Hash Rate

GeForce GTX 980		408 Sol/s
GeForce GTX 850M		49 Sol/s
	Difference: 359 (733%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce GTX 980		165 Watts
	Difference: 125 Watts (313%)

Memory Bandwidth

In theory, the GeForce GTX 980 is 600% quicker than the GeForce GTX 850M overall, due to its greater data rate. (explain)

GeForce GTX 980		224000 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 192000 (600%)

Texel Rate

The GeForce GTX 980 will be much (about 311%) faster with regards to texture filtering than the GeForce GTX 850M. (explain)

GeForce GTX 980		144128 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 109088 (311%)

Pixel Rate

The GeForce GTX 980 is a lot (about 414%) faster with regards to full screen anti-aliasing than the GeForce GTX 850M, and also should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 980		72064 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 58048 (414%)

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 largest amount of information (in units of MB per second) that can be moved over 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 RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher 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 amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.