1.35V or 1.5V? DDR3L MAXIMUS VI GENE and Intel® Core i5-4690

prozvill

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Jul 20, 2017
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I have MAXIMUS VI GENE Z87, Intel Core i5-4690 Processor, FURY DDR3L 1600MHz 2x8Gb.
The CPU and Motherboard are compatible and i got confused with the DDR3L compatibility.

I read on Wikipedia about DDR3L
"The DDR3L and DDR3U specifications are compatible with the original DDR3 standard and can run at either the lower voltage or at 1.50 V.[19] However, newer DDR3L-capable devices, which only operate at 1.35 V, such as systems using fourth-generation Intel processors, are not compatible with DDR3 SDRAM since DDR3 SDRAM operates only at 1.50 V."

Now Intel Core i5-4690 Processor requirements for Memory are DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V

MAXIMUS VI GENE
4 x DIMM, Max. 32GB, DDR3 3000(O.C.)/2933(O.C.)/2800(O.C.)/2666(O.C.)/2600(O.C.)/2500(O.C.)/2400(O.C.)/2200(O.C.)/2133(O.C.)/2000(O.C.)/1866(O.C.)/1800(O.C.)/1600(O.C.)/1333(O.C.) MHz Non-ECC, Un-buffered Memory
Dual Channel Memory Architecture
Supports Intel® Extreme Memory Profile (XMP)

CPU is required to be at 1.5V, should i then change the voltage?

What are the newer DDR3L-capable devices which only operate at 1.35V and are "systems using fourth-generation Intel processors"?

Should i run the memory at 1.35V or 1.5V?

Will 1.5V be compatible with my motherboard?

 
Solution
You can run it at either 1.35 or 1.5V and it won't matter. CPU doesn't 'require' 1.5V, but is there as a 'cap'/

Some low profile CPUs exist, for things like Intel NUCs and similar, with the memory controller on the CPU designed to accept a max of 1.35V.
While technically 1.5V can 'work' on those, they are doing damage to the memory controller and impacting the CPUs lifespan.

You have the reverse. While your chip can run 1.35V, the additional 0.15V is totally safe for the memory controller on the 4690 and you can use 1.5V if you wish...... might help you OC your RAM some if you were looking to.
But running at 1.35V isn;'t going to do any harm at all.

Barty1884

Retired Moderator
You can run it at either 1.35 or 1.5V and it won't matter. CPU doesn't 'require' 1.5V, but is there as a 'cap'/

Some low profile CPUs exist, for things like Intel NUCs and similar, with the memory controller on the CPU designed to accept a max of 1.35V.
While technically 1.5V can 'work' on those, they are doing damage to the memory controller and impacting the CPUs lifespan.

You have the reverse. While your chip can run 1.35V, the additional 0.15V is totally safe for the memory controller on the 4690 and you can use 1.5V if you wish...... might help you OC your RAM some if you were looking to.
But running at 1.35V isn;'t going to do any harm at all.
 
Solution