Only way to OC locked Xeons is by rising the base clock(BCLK)so if you have some decent motherboard you can try and see how far you can go....go slow first try to see if everything is stable on 103,105 BCLK and if it is then go more&more......I personally atm have Xeon 2697 V2 and it is OC via BCLK on 115,2 also before I have Xeon 2650 V2 and it was OC up to the 113,4 so it is possible to reach some more then decent speeds just go easy step by step.....
P.S.Tho' you have X99 so it will be more difficult to do BCLK OC + it is a Chinese motherboard not sure if you have that option in bios settings...Anyway I am 99% sure that you can do Turbo-Hack on those motherboards but you need to be careful if you do that as you will need to do some bios flashing.....
Here is video bellow with your mobo and this guy is an expert and knows what is doing