Graphics card mad in minecraft or what?

He probably has more ram allocated to the Java running MC, more caching. Also, difference in video cards is maybe 20-25% better with yours, not that big a factor. Finally, the i7 is a better gaming CPU… MC is a CPU intensive game.

Also, factors as screen resolution can play a big factor. Are both 1080p?

You say "he must have like 100 fps", but is that showing the F3 screen with fps or just a guess? I think on-line Flash videos play about 25 fps, so without something showing fps, it would be tough to guess. He might also be using lower graphic settings.

I have a 5 year old i5-650 3.2 GHz, 8 GB RAM, GTX 750 Ti and without shaders I had minecraft throttled to 120 fps because otherwise it was running much faster than necessary for my 60 Hz 1080p HDTV. I hadn't tried shaders before, but I installed SEUS-v10.2-Preview1-Ultra and that is interesting. Water looks more realistic, and I'm not used to seeing my shadow, but the sun gets in my eyes. So on my PC minecraft with shaders on my normal far/fancy settings was 30-35 fps, but it is smooth, so that is not really a big deal. If you watch a movie on film it is 24 frames per second.

With the 60 watt GTX 750 Ti my whole PC only uses 150 watts max (measured). But I wish that I had known that the GTX 960 was to be released soon after I bought that because that with the new efficient Maxwell chip would be much faster than my previous GTX 550 Ti using only 4 more watts (120w vs 116w).

PS: I just tried it with SEUS-v10.1-Standard shaders (instead of 10.2 Ultra) and it was sometimes in upper 30's to upper 40's or even in the 50's indoors.

Human eye can't see more than 24-32 fps, its was something like that. It might even possibly be the cpu, because when playing online, the games use a lot of cpu power to process online elements