Which is most efficient X99 board?

It's probably not one of the first things to consider when buying a highend X99 board, but I'm still curious which one out there is the most efficient and can save me money for the long run. Can anyone help?

You mean in terms of power use?

Almost all boards are the same. There are little differences even between these cheapest and most expensive. Most expensive X99 boards have "only" more SATA/SAS ports and additional PLX chips that give you more PCIe lanes. Still most of these things are waste of money for 95% users as barely anyone will use more than 6 HDD/SSD or more than 2 graphics cards.
All boards except ASUS are overclocking almost the same. ASUS has its magical socket which is helping in higher cache clock but it counts almost only while benchmarking.
More stuff onboard = higher wattage, more phases also usually means higher wattage. Probably getting cheapest X99 board will save you more in long term usage than current draw differences between these boards. Something like ASRock X99 Extreme 4 or MSI X99S SLI Plus will be best choice if you don't need anything above the standard but still wish to overclock CPU high.

Yeah, I'm not planning to go crazy...5820K, DDR4 and 5 or 6 HDDs at most...I think I'll look at the Extreme 4 and MSI X99S and even the Gigabyte UD4.

I find it very difficult to find a better deal on a z99 than this

I personally own this board. it rocks

http://www.newegg.com/Product/Product.aspx?Item=N82E16813157534

Did the price go down? X99 OC at 280 bucks is tempting...this makes it even harder to decide...

Ha, its never easy is it? If you've got the extra cash, I'd go with X99 OC too.

ohenryy said:

Did the price go down? X99 OC at 280 bucks is tempting...this makes it even harder to decide...

Click to expand...

There's also a $50 mail in rebate special right now, that brings it down even further.

This is cold, but the point is this board will not hold you back

http://valid.x86.fr/wuah1z

You might want to check this test Toms ran on X99 boards.
http://www.tomshardware.com/reviews/intel-x99-haswell-e-overclocking,3934-15.html

ATMINSIDE said:

There's also a $50 mail in rebate special right now, that brings it down even further.

Click to expand...

That's an awesome deal, this makes it almost the same price as the lower end X99 boards.