Hi, I am currently using my iPad pro on stage with my multi-keyboard setup, and I enjoy it a lot, since it's easy to tote around, mount, etc. However, although I mostly use my keyboards internal sounds, I have in the past used some IOS apps for various instruments. None of them really compare, however to the samples I own and use in my music studio, and for that (Kontakt libraries, etc.) I would need a laptop to load and to use them via MIDI, etc. I don't need the laptop to produce music but to load and run sample libraries and play them live in performance. Therefore, I'm wondering if a cheap laptop would be a waste, given the small hard drive space and slowness of loading sample libraries, but what might be a compromise between a full-fledged audio production laptop, and a performance laptop that augments my stage setup? Any ideas out there? Thanks.

A run of the mill laptop probably would not be advisable for running a large sample library. Late last year when I shopped for a laptop to use on stage the only thing I found that came close in specs to a daw- ( 16gb memory, two hard drives, Fast processor ) were gaming laptops. Even in that bracket you need to look for a deal, many of those are only 8gb memory and a 5400 rpm single drive. Most do have a decent graphics card though for obvious reasons.
I bought an HP OMEN. So far I've been happy with it. When I bought it I thought the larger screen would be an advantage. It's actually quite large. The smaller screen would have been plenty. 
 
Good luck Dave!
 
 
 
 

I have a Dell Inspiron 15, 5577 Model that is sold as a Gaming Laptop.  It has an M.2 SSD (and space for a second hard drive or SSD) and came with a 7th gen i5 and 16GB of RAM.  "Visually" it boots up, loads programs and runs the same as my Desktop DAW.  I've used it for several on-site recordings.  Don't know how it would do for MIDI but it does "zing along".  
 
The current model has an i7 7700 in it with an M.2 SSD and a hard drive. 

Thanks for the suggestions, folks. Will look into it, for sure. 

If you're wanting to play advanced sample-libraries (with zero glitches ever) using an ASIO buffer size of 64-samples (or lower), be careful with your selection of laptop.  Most are not up to this task (even with M.2 Ultra SSD).
 
To test, load up your favorite disk-streaming piano library, step on the sustain pedal... and gliss up/down the keyboard.  If you can do this completely glitch-free (several times to make sure), you'll never have glitches playing your libraries... even if you decide to really lean on that sustain pedal.
 
If you don't mind playing samples at a 128 or 256 sample ASIO buffer size, many laptops will suffice.

Jim, can you share some basic specs as a guide line?
 
Much appreciated,
 
tecknot

For working with ultra low latency audio, I'm not a fan of "Mobile" CPUs.
That means using a laptop to running a Desktop CPU.
Right now, the fastest laptop you can get is running a 8700k.
That's the closest you'll get to a fast desktop... but it's expensive.

MacBook Pro + MainStage?
 
With an SSD (internal or thunderbolt) and the right interface low latency should be straightforward even with the i5 version. So long as it's not too overloaded of course.
 
Not cheap new but there are good condition used ones around.

i would think for what it is you want to do,
going the opposite way, would be what is required........

Another compromise you could consider is going with a lesser laptop with an SSD and downsizing your library using some kind of auto-resampler like Nuance or Bliss. I haven't personally done this, but have considered it.
 
It would be a drop in fidelity, but I'm not sure you'd miss it in a live setting. My personal feeling is that I'd rather sacrifice a bit of quality to avoid pushing my machine to its limits all the time. But 
 

Jim Roseberry
If you're wanting to play advanced sample-libraries (with zero glitches ever) using an ASIO buffer size of 64-samples (or lower), be careful with your selection of laptop.  Most are not up to this task (even with M.2 Ultra SSD).
 If you don't mind playing samples at a 128 or 256 sample ASIO buffer size, many laptops will suffice.

 
Just one more wrinkle I'd add to this, which perhaps you've already considered; your choice of audio interface can also be critical here, as driver quality/configurability can have a large impact at lower buffers. When I switched from an (admittedly outdated) focusrite to one of the newest-gen MOTU boxes, I had a massive latency improvement even at identical buffer settings, and can set it as high as 512 without being bugged by the latency. YMMV, of course.
 
Great, more things to research, right? :)