GeForce 940M vs GeForce GTX 970M

Intro

Compare all that to the GeForce GTX 970M, which has a clock speed of 924 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 192-bit memory bus, and uses a 28 nm design. It is comprised of 1280 SPUs, 80 TAUs, and 48 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 970M		7520 points
GeForce 940M		1740 points
	Difference: 5780 (332%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 970M should theoretically perform much faster than the GeForce 940M in general. (explain)

GeForce GTX 970M		96000 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 80000 (500%)

Texel Rate

The GeForce GTX 970M is much (more or less 187%) more effective at anisotropic filtering than the GeForce 940M. (explain)

GeForce GTX 970M		73920 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 48192 (187%)

Pixel Rate

The GeForce GTX 970M will be a lot (about 417%) faster with regards to full screen anti-aliasing than the GeForce 940M, and also should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 970M		44352 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 35776 (417%)

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 maximum amount of information (in units of megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 can be processed in one second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the 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 maximum number of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core 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 rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.