Is my memory set at the proper voltage?

yemmyow

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Mar 10, 2017
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Here are my new PC build specs...
- i7 6700k 4.0 GHz Skylake
- Gigabyte GA-Z170x gaming 5 motherboard
- EVGA 3200mhz DDR4 RAM PC3-25600 - 16GB
- Nvidia Geforce 1060 3GB
- SSD 128GB - Windows 10 install location
- 1TB 3.5" HDD - photoshop, overwatch, battlefield 1 install location
- 500TB 2.5" HDD 7200RPM - backup drive

The ram I bought is 2x8GB EVGA 3200 DDR4 SC. On the manufacturers website, it says that it's rated at 1.5v. However, in the BIOS, I see 1.2v. On micro center's website, the product page lists it at 1.35V. I also am OC my ram up to 3200 and enabled XMP. I seem to be getting a laggy PC in windows 10 where programs start not responding, start menu is unresponsive and slow to load. But then the lag will stop and my PC will be super speedy again.

I tried a fresh install of windows 10 and a day later I ran into the same issue of lag. At first the PC seemed like it was fixed.

Could my RAM being at the wrong voltage be screwing things up for my PC and making everything slow? I thought that my motherboard would automatically set the voltages to make it work. I'm really baffled here and am not sure what I should do. Also, I can't manually set to 1.35v on the dot. In the BIOS when I enter 1.35, it jumps to like 1.364V..

Any insight will be appreciated. Thanks!
 
Solution
I can only assume the 1.5 V value listed on EVGA's website is a typo. I've never seen DDR4 with voltage that high. I think the most I've seen is 1.4 V, and that's for crazy high speed and/or low latency sticks. The specs for this EVGA aren't super high, no reason it should need such high voltage.

Eximo

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Many motherboard manufacturers offset memory voltage a little high to make sure of compatibility.

1.2 volts is the specified voltage for DDR4. 1.35 is the maximum that the CPU can tolerate. 1.5 would result in rapid CPU degradation.

I would give memtestx86 a try and see if it can pass that. If it does, your memory is fine and something else is the problem.

If it does fail, then you should consider running the memory at 3000 or 2666 with the same or less voltage.
 

yemmyow

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Mar 10, 2017
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Ok, thanks for your help Eximo. I will try running those tests and see what happens. I did run windows memory diagnostic and it came back clean/ok. But I will try memtestx86 next




 

TJ Hooker

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I can only assume the 1.5 V value listed on EVGA's website is a typo. I've never seen DDR4 with voltage that high. I think the most I've seen is 1.4 V, and that's for crazy high speed and/or low latency sticks. The specs for this EVGA aren't super high, no reason it should need such high voltage.
 
Solution