[jeswin]

Nope. X99 i7s support 128GB and quad channel memory. Most of X99 boards come with 8 slots as well. However the setup is way over-priced, so I'm going to preorder Ryzen on day 1 if available. It just seems like phenomenal value.

[tbob22]

Sandy-E to Haswell-E i7's do not officially support 128gb, though there have been reports of it working.

Broadwell-E i7's now officially support 128gb.

All the Xeon equivalents (e5-1650/60,80, etc) support 256-768gb depending on the model, if paired with a consumer board that limit is usually 64-128gb.