GeForce 940M vs GeForce GTX 880M

Intro

Compare all of that to the GeForce GTX 880M, which has a clock speed of 954 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1536 SPUs, 128 TAUs, and 32 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 880M		6360 points
GeForce 940M		1740 points
	Difference: 4620 (266%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 880M will be 700% quicker than the GeForce 940M in general, due to its greater data rate. (explain)

GeForce GTX 880M		128000 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 112000 (700%)

Texel Rate

The GeForce GTX 880M will be quite a bit (approximately 375%) better at AF than the GeForce 940M. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 96384 (375%)

Pixel Rate

The GeForce GTX 880M will be quite a bit (about 256%) better at full screen anti-aliasing than the GeForce 940M, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 21952 (256%)

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 data (in units of MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's 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 fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.