DDR4-2666 at 1.2V?

Aug 7th, 2020 12:34 pm

#1

Mike^ [OP]: Deal Addict; Oct 20, 2005; 1157 posts; 361 upvotes

Aug 7th, 2020 12:34 pm

Recently picked up a Lenovo Desktop computer for work: ThinkCentre M75s

AMD® Ryzen™ 5 PRO 3600 Processor (3.60 GHz, up to 4.20 GHz Max Boost, 6 Cores, 12 Threads, 32 MB Cache)
Windows 10 Pro 64
4 GB DDR4 2666MHz

Since this is probably a locked motherboard where we can't tune the memory settings, When can I purchase 2x8GB kit of ram that operates at 2666MHz?

Do they even exist? All the DDR3-3000/3200 Kits requires XMP 1.35V but i suspect this desktop won't support this voltage but only 1.2V kits

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Aug 7th, 2020 1:32 pm

#2

board123: Deal Guru; Nov 27, 2005; 12161 posts; 2238 upvotes; Richmond Hill

Aug 7th, 2020 1:32 pm

https://www.amazon.ca/Corsair-Vengeance ... 390&sr=8-3

Aug 7th, 2020 1:52 pm

#3

Desperadude: Deal Addict; Dec 29, 2013; 1279 posts; 1015 upvotes; Montr

Aug 7th, 2020 1:52 pm

I bought a DDR4-3000 @ 1.35V and run it at 2666 @ 1.2V
Search for adata kit on amazon. It’s cheap

Aug 7th, 2020 1:54 pm

#4

Mike^ [OP]: Deal Addict; Oct 20, 2005; 1157 posts; 361 upvotes

Aug 7th, 2020 1:54 pm

board123 wrote: ↑ https://www.amazon.ca/Corsair-Vengeance ... 390&sr=8-3

Specs based on corsair website:

SPD Latency 15-15-15-36
SPD Speed 2133MHz
SPD Voltage 1.2V

Speed Rating PC4-21300 (2666MHz)
Compatibility Intel 100 Series,Intel 200 Series,Intel 300 Series,Intel 400 Series,Intel X299
Heat Spreader Anodized Aluminum
Package Memory Format DIMM
Performance Profile XMP 2.0
Package Memory Pin 288

Doesn't XMP usually bump up the voltage to 1.35V?

---
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Aug 7th, 2020 2:07 pm

#5

board123: Deal Guru; Nov 27, 2005; 12161 posts; 2238 upvotes; Richmond Hill

Aug 7th, 2020 2:07 pm

Mike^ wrote: ↑ Doesn't XMP usually bump up the voltage to 1.35V?

Sometimes, but not necessarily. In this case - no.

Aug 7th, 2020 2:22 pm

#6

Mike^ [OP]: Deal Addict; Oct 20, 2005; 1157 posts; 361 upvotes

Aug 7th, 2020 2:22 pm

board123 wrote: ↑ Sometimes, but not necessarily. In this case - no.

Did some research:
https://forums.tomshardware.com/threads ... 8.3371365/

Looks like CPU-Z reports JEDEC to be2133mhz. (1069.8mhz) - multiple that by 2 for dual channel.

It seems so difficult to find JEDEC 2666mhz.

---
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Aug 7th, 2020 2:23 pm

#7

Mike^ [OP]: Deal Addict; Oct 20, 2005; 1157 posts; 361 upvotes

Aug 7th, 2020 2:23 pm

Desperadude wrote: ↑ I bought a DDR4-3000 @ 1.35V and run it at 2666 @ 1.2V
Search for adata kit on amazon. It’s cheap

This seems like an option but would rather go Corsair / Kingston etc

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Happy Zoomer Wireless User | $40.50 - 6GB LTE Data | Good Deal +$50 Credit

Aug 7th, 2020 2:29 pm

#8

board123: Deal Guru; Nov 27, 2005; 12161 posts; 2238 upvotes; Richmond Hill

Aug 7th, 2020 2:29 pm

You're making this far more complicated than it needs to be. Buy any memory kit, plug it in, and it will work fine.

+1

Aug 7th, 2020 3:47 pm

#9

Devhux: Deal Addict; Jan 13, 2014; 2461 posts; 1446 upvotes; Calgary

Aug 7th, 2020 3:47 pm

Mike^ wrote: ↑ Did some research:
https://forums.tomshardware.com/threads ... 8.3371365/

Looks like CPU-Z reports JEDEC to be2133mhz. (1069.8mhz) - multiple that by 2 for dual channel.

It seems so difficult to find JEDEC 2666mhz.

That’s because they don’t exist. The JEDEC standard for DDR4 is 2133MHz.

Aug 7th, 2020 4:17 pm

#10

Jruuu: Sr. Member; Jun 13, 2009; 984 posts; 724 upvotes; Toronto

Aug 7th, 2020 4:17 pm

Find the mobo model number. Every mobo has a list of recommended memory modules that you can check out, similar to this one. I usually stick to the recommended modules in these lists. The lists are usually long, so you are bound to find something within your specs and price point.

Check the support page of the mobo to find the list. It is usually named something like qualified memory module list.