GeForce 940M vs GeForce GTX 980

Intro

Compare all that to the GeForce GTX 980, which uses a 28 nm design. nVidia has set the core speed at 1126 MHz. The GDDR5 memory works at a speed of 1750 MHz on this particular card. It features 2048 SPUs along with 128 TAUs and 64 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 980		13552 points
GeForce 940M		1740 points
	Difference: 11812 (679%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 980 should perform quite a bit faster than the GeForce 940M in general. (explain)

GeForce GTX 980		224000 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 208000 (1300%)

Texel Rate

The GeForce GTX 980 will be much (about 460%) more effective at anisotropic filtering than the GeForce 940M. (explain)

GeForce GTX 980		144128 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 118400 (460%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 980 is superior to the GeForce 940M, by far. (explain)

GeForce GTX 980		72064 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 63488 (740%)

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 information (in units of MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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 of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.