I am upgrading an older system for graphics, Photoshop/Premiere.

Some RAM concerns; they are readily available as Dual Ranked 4x or 8x. But I can't find the motherboard limits on total ranks. ...Having trouble understanding some specs...
Am also told on other forums that although not listed as beyond DDR3 1333 capable, DDR3 1600 will work. 1600 are all that are readily available.
With twelve slots I would like to run twelve "DDR3 PC3-12800 • CL=11 • Dual Ranked • x8 based • Registered • ECC • DDR3-1600 • 1.35V • 1024Meg "

They are available as 8x or 4x, both Dual Ranked.

A bit more info: 'am still investigating all possibilities, but hope/intend to upgrade from DualE5620 2.4GHz Dual Quad processors up to 5690's.

From a nvidia FX1800 card to a GTX 980 Ti Hybrid graphics card.

And from a WD Veloci Raptor SATA HD to a 1Tb WD Blue Pc SSD

An obvious novice, any help, cautions, suggestions will be appreciated!

Thank you.