GeForce 940M vs GeForce GTX Titan

Intro

Compare those specs to the GeForce GTX Titan, which comes with GPU clock speed of 837 MHz, and 6144 MB of GDDR5 RAM set to run at 1502 MHz through a 384-bit bus. It also is made up of 2688 SPUs, 224 TAUs, and 48 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 Titan		10162 points
GeForce 940M		1740 points
	Difference: 8422 (484%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX Titan should be 1702% quicker than the GeForce 940M in general, due to its greater bandwidth. (explain)

GeForce GTX Titan		288384 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 272384 (1702%)

Texel Rate

The GeForce GTX Titan is much (about 629%) better at AF than the GeForce 940M. (explain)

GeForce GTX Titan		187488 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 161760 (629%)

Pixel Rate

The GeForce GTX Titan will be much (approximately 368%) faster with regards to FSAA than the GeForce 940M, and also capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX Titan		40176 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 31600 (368%)

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 max amount of data (in units of MB per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher 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 that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel 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 get to the maximum fill rate.