The best answer I have right now is, it's probably a little slower. Some of the bugs get in the way of making a solid determination empirically but I haven't really focused on that yet.
PassMark highlights a few things.
Red = SP3 i5 *(selected from their database in roughly the 85-90th percentile ranking)
Blue = SP3 i3 *
Yellow = S3 Atom *
Green = SP4 core m (one run on my SP4)
PassMark Rating: Overall score SP3 i5 edges out the SP4 core m by 9.2% that's not much really.
CPU score SP3 i5 by 23% you could notice that at times.
2D Graphics, SP3 i5 by 50% sounds significant but may be less important than the others. (Intel is focused on 3D graphics).
3D Graphics Here is where the core m out performs the SP3 i5 - down -32%.
Memory is pretty close with 8% difference (not likely noticeable on most things.)
Disk the SP4 comes out ahead.
The SP3 i3 is beaten handily by SP4 core m and the Surface 3 which is hobbled by slow disk is far behind.
I know you have a Surface 3 so that should help you a lot.
Wow great comparison, surprises me the core M3 is not too different from the sp3 i5. I'm selling my S3 as package (I'm in the UK) if anyone's interested since I do a lot of video editing I need my i3 laptop more. Maybe in the new year when things get ironed out I'll venture for the i5 sp4
Hmmm which one should I choose? Core m3 or i5? I would use this device for studying and I would like to do some basic editing (GoPro 1080p, very little 4k) when I am on vacation or something similar... I have laptop which has 8gig ram and i5, so I just cant buy similar device (i5 and 8g ram) and ofcourse this is about money also.
I am just wondering that would m3 be "useable" to do just basic editing -- then later I would do "real editing" with my pc.
Which one would you choose? Can you do light editing with m3 and 4g ram.
I might just use that extra 100e to add ramm to my workstation, if core m3 suits for me