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1.65v kingsom memory on Asus Motherboard will it work?

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October 17, 2012 8:23:54 AM

I have just bought the Asus P8Z77-V LE PLUS motherboard, and went to this list to try to find out what memory that matches.

http://dlcdnet.asus.com/pub/ASUS/mb/LGA1155/P8Z77-V_LE_...

There i found some Kingston memory that should match KINGSTON KHX1600C9D3K4/16GX(XMP) 16GB ( 4GB x4 ) DS - - - 1.65V

Some one on a norweigain forum said to me that i should by ram that is 1,5v, not 1.65v .. So i am just wondering have i messed up? Or will it work just perfect?

The cpu if that matters is a Intel® Core i7-3770K Processor Socket-LGA1155, Quad Core, 3.5Ghz, 8MB, Boxed w/fan
a c 347 } Memory
a c 207 Ĉ ASUS
a c 716 V Motherboard
October 17, 2012 1:59:43 PM

Ideally, 1.50v RAM is recommend on Intel since the Sandy Bridge's introduction and the same holds true on the Ivy Bridge. Truth is the voltages that degrade a CPU over time are both the vCore and VCCSA (VCCIO) or CPU & IMC voltages. So as long as your kit can successfully run using a VCCSA (VCCIO) of 1.20v or less, try 1.10v, then you should be fine.

Personally, I prefer DDR3L RAM (1.35v) which is significantly less stressful on the CPU.
October 17, 2012 2:04:32 PM

jaquith said:
Ideally, 1.50v RAM is recommend on Intel since the Sandy Bridge's introduction and the same holds true on the Ivy Bridge. Truth is the voltages that degrade a CPU over time are both the vCore and VCCSA (VCCIO) or CPU & IMC voltages. So as long as your kit can successfully run using a VCCSA (VCCIO) of 1.20v or less, try 1.10v, then you should be fine.

Personally, I prefer DDR3L RAM (1.35v) which is significantly less stressful on the CPU.


Do i have to do any thing when have mounted them in the motherboard? Or will the motherboard take care of the settings itself?

If i do not change any thing , could it harm the computer in any way? Or is the only concern that if i had bought some other memory sticks that they would have preformed a little better?
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a c 347 } Memory
a c 207 Ĉ ASUS
a c 716 V Motherboard
October 17, 2012 2:33:39 PM

I don't believe that Kingston kit offers a 'SPD' with 800MHz (DDR3-1600) for default, so to achieve the Rated DDR3-1600 you'll need to add the following in the BIOS:
AI Overclocker -> XMP / Profile 1

Considering that you have a 1.65v and as stated above I'm pretty sure the RAM will default to 667MHz (DDR3-1333) @ 1.50v 'SPD', you yes you could leave everything at Auto.

CPU-z: the image on the (left) is what's actually running, and on the (right) the available 'SPD' and 'XMP' settings available to the RAM e.g. XMP-1600. CPU-z - http://www.cpuid.com/softwares/cpu-z.html


DDR3-1333 vs DDR3-1600 real world not much of a difference, but here's a nice article (synthetic test aren't real world) - http://www.bit-tech.net/hardware/memory/2011/01/11/the-...
a c 347 } Memory
a c 207 Ĉ ASUS
a c 716 V Motherboard
October 17, 2012 2:40:03 PM

Note: It would be prudent to stress the CPU and verify that you can achieve the full Turbo clocks of your CPU. For the Core i7-3770K it's 3.9GHz. Use AIDA64 Extreme to stress test and verify the clock speed - http://www.aida64.com/downloads

On some CPU's unless you have the full Rated CPU memory speed, in your case DDR3-1600 you might lose 100~200 MHz. So compare AI Overclocker -> (XMP vs Auto).
!