Underclocking 1.5V DDR3 RAM

[BuIlDaLiBlE]

Hello. I'm planning on buying new Kaby Lake Intel CPU. According to the specifications its safe RAM voltage is 1.35, but I have this Corsair Vengeance DDR 8GB (2x 4GB) RAM which is 1.5V, is it possible to underclock it to 1.35V with GA-B150M-D3V motherboard? I know that DDR3L or even DD4 would be better options but I don't want to buy a new RAM. If its not possible then how really unsafe running at 1.5V would be? I don't want any older CPU either. I'd be glad for any opinions about this.

 

[DRagor]

Possible? Yes, I've seen two different forum user making such build work.
Safe? No. Both builds failed sooner or later.

 

[13thmonkey]

If you are lukcy you can undervolt it and slow it down a few buckets and relax the timings, if you are lucky it will work or show you detectable errors when you test it if you are unlucky then it won't show you any errors, but will be creating them, results = bluescreens if you are lucky file corruption and bluescreens if not. There are more ways for it not to work than to work.

 

[BuIlDaLiBlE]

So I'll try to underclock it, if I sucees I'm safe I guess? Well, relatively.

 

[Rexper]

High voltage ram pairing with skylake/kabylake will most liekyl harm the CPU's IMC overtime, and end up decreasing your CPU's life.

Also, all motherboards that support LGA 1151 socket as well as DDR3 memory are previous generation motherboards (h110, b150, h170, z170) meaning if you don't have a handy skylake CPU to update, the motherboard will likely come with a BIOS incompatible with Kabylake.

As others have suggested, undervolting (not underclocking) may be possible, although not recommended.
I suggest just selling the ram and buying DDR4 with a b250 motherboard.

 

[BuIlDaLiBlE]

Ok, then that's what I'm going to do. Selling my DDR3 and buying new DDR4 sticks.