The GA-X99-SLI has made a few changes to the older GA-X99-UD4 to bring you an upgrade for a good price.
Aside from support for higher RAM clocks and a change in the order of the rear I/O USB ports thanks to an ITE chip there seems to be no difference between the two. However, if you peek at the section around the ITE8792E chip, you’ll notice a lot of voltage regulators arranged in two neat rows, these seem to be used for powering the CPU socket. Well, not the whole of it but the extra power pins in the LGA 2011-3 socket that helps achieve higher overclocks. Also, it does seem to have a better ring to it when you call it a X99-SLI instead of an X99-UD4.
Another difference we noticed was that signal traces and SMD components have now been moved slightly away from some of the motherboard mounting holes which is definitely a welcome change. At the end of it, the GA-X99-SLI has made a few changes to the GA-X99-UD4 to bring you an upgrade for a good price.
Chipset: Intel X99
Memory support: 8×3600(OC)MHz upto 128GB
LAN: Intel Gigabit Ethernet
Audio: ALC1150 7.1
SATA: 10x SATA III
Expansion: 4x PCIe X16(x16+x8+x16+x8)
Dimensions (LxWxD): 305 mm x 244 mm
Warranty: 3 years
Gigabyte Technology (India) Pvt. Ltd.
Phone: 022-40633222
Email: sales@gigabyte.in
Website: http://www.gigabyte.in/