Does the NVIDIA GeForce GTX 780M with 4GB really make a difference

I just bought 27inch late 2012 imac. 3.4ghz i7 32gb ram NVIDIA 680MX 2gb and Im currious does the 780M 4gb really make a difference. I do not play any games. I do have 2 27 lightening bolt displays. I do alot of video editing and photograph. I have all Adobe Products and Apple software but i cannot find any where that the GTX 780m with 4gb will be any better. All I can find is if you play games then 4gb is good.
Any advice would be great!
Thank you in advance,

Certain applications such as Photoshop or Final Cut Pro will benefit from the higher video ram, however the GTX 680M is a very powerful card and the 2GB of ram that it comes with should be more than sufficient for most tasks.
Only extremely large files/projects will truly benefit from having the 4GB or ram that the GTX 780M supplies.
The 2013 iMac offers a performance boost over the 2012 version, however the increases in terms of CPU/GPU power are mostly modest.
The Haswell architecture was designed with mobile use as the primary focus and so areas such as energy usage were the priority.
The Nvidia 7XX graphics cards run on the same Kepler architecture as the 6XX cards, as with the Intel CPU the improvements are there but there is not a huge leap forward.

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