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1.35V memory required in G751/G771/G551s (same as G750)

X-ROG
Level 15
Please note we fit 1.35V memory into the G751s (and G750s). Haswell CPUs require this and using 1.5V memory can sometimes cause problems along the lines of:
> Overheating
> Damage to the CPU IMC (due to the increased potential difference)
> Greater battery use than our stated values.

There is more discussion and recommendations of memory to use in this thread, as both G750 and G751's use the same Intel 4th Gen 'Haswell' processors: http://rog.asus.com/forum/showthread.php?33744-Upgraders-1-35V-memory-is-required!
139,546 Views
151 REPLIES 151

Mublur wrote:
Howdy hmscott, the preinstalled memory is: Hyundai HMT41Gs6aFR8A-PB, 8gb, pc3-12800


Mublur, that's easy then, you can add 1 or 2 (3?) more of the same, find them new or as pulls from Macbooks on eBay - that's where I got mine.

Make sure the listing you order from is the exact part number, sometimes the vendors put in tags with lots of part numbers, so you have to double check.
http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR0.TRC0.H0.XHMT41Gs6aFR8A-PB&_...

Have fun 🙂

WoodburyMan
Level 7
I have a G751YJ. Came with 3x8gb Hynix memory modules, 11-11-11-28 1.35V. NewEgg had G.SKILL F3-1600C11S-8GRSL on sale for $55 during Black Friday, back up to $75 now. I just received it and it works fine. Same timing and settings as the others so it fits in just fine. I ran Memtest for a good hour with no errors as well, so it should be compatible if anyone is looking for other compatible memory.

I tried installing a single 8GB stick of PNY PC3-12800 which the specs say run at 1.35v into my G751JM. When I tried restarting I got a black screen and after 20 seconds the red power light went out. What did I do wrong?

haydenwse wrote:
I tried installing a single 8GB stick of PNY PC3-12800 which the specs say run at 1.35v into my G751JM. When I tried restarting I got a black screen and after 20 seconds the red power light went out. What did I do wrong?


haydenwse, it could be several things.

1) You didn't read the previous posts suggesting getting the same memory as already installed for best compatibility. Use CPU-Z SPD tab to find the make/model of memory already installed. Find that same make/model memory and purchase to install.

2) The PNY memory specs published/unpublished aren't 100% compatible with the existing memory. Use CPU-Z SPD tab to find the make/model of memory already installed. Find that same make/model memory spec online and compare specs against the PNY. There are 20 some particular listed specs to make compatible, normally we only see the top ones Freq, CAS, RAS, tRAS, tRC, voltage, but those aren't all that need to be compatible.

3) The PNY memory is compatible, but you got a bad stick, check #2 to be sure, and return for a good one, or do #1 instead.

Sorry, it's a pain to go through this, but good thing it didn't damage the laptop motherboard, so you can pull it out and run without it while resolving.

CPU-Z (I use the ROG version)
http://www.cpuid.com/softwares/cpu-z.html

44379

Please come back and let us know which solution you used and how it worked 🙂

i need help can this laptop support this ram
CORSAIR Vengeance Performance 16GB (2 x 8G) 204-Pin DDR3 SO-DIMM DDR3 1866 (PC3 15000) Laptop Memory Model CMSX16GX3M2B1866C10

i try digging around but not much info help me out plz

Chan Yew Kong wrote:
i need help can this laptop support this ram
CORSAIR Vengeance Performance 16GB (2 x 8G) 204-Pin DDR3 SO-DIMM DDR3 1866 (PC3 15000) Laptop Memory Model CMSX16GX3M2B1866C10

i try digging around but not much info help me out plz

Considering this is a thread 751/771/551 and the reason no one bothered to answer you is that its clearly obvious you didnt look in this thread there is information about corsair vengence memory also in this thread is information that g skill 2133 works on a g751. If your assuming what works on a g751 works on a g552 then you have your answer. There is also no reason for you to double post.
https://rog.asus.com/forum/showthread.php?77523-GL52JX-what-ram-is-suitable
3d printed parts and accessories for the G751. You know you want something better than OEM ->https://www.shapeways.com/shops/aeolisio[SIGPIC][/SIGPIC]

So I have a G751JL that came with 8GB of RAM, and shipped with Windows 8.1 and was upgraded to Windows 10 right before the free upgrade promotion ended on 08/31/2016. I ran ROG CPU-Z before purchasing extra memory and it said I had a Samsung 8 GB stick on the 4th slot. I matched the model of the memory and bought a 16 GB kit of matching RAM. (I didn't want to deal with installing a stick of memory on the hard to access slot). The machine recognized the extra memory just fine and ROG CPU-Z showed everything was running fine.

59699

Ever since then I keep getting random BSOD with everything from MEMORY_MANAGEMENT, KMODE_EXCEPTION_NOT_HANDLED and KERNEL_SECURITY_CHECK_FAILURE.

I tried running Windows Memory Diagnostic, but no matter what I select ("Restart now and check for problems" or "Check for problems next time I start my computer" the diagnostic never runs. My machine boots up to a black screen and I have to do a hard reset to get Windows running again)

Any way to get Windows Memory Diagnostic to work, or other way to check the new memory? If there is nothing wrong with the memory, how do I get the laptop to work properly with the added RAM?

Wow, I'm glad I came across this thread. It would have been great to know this a long time ago... >.< Asus >.<

I had no idea 1.35v was REQUIRED. I've always modded/built and taken care of my own machines and considered myself "fairly" knowledgeable. Basically I know enough and anything I don't I'll research and do right. Ram isn't something you normally have to really think too hard about though.

I had 6GB (1x4 & 1x2) of extra matching DDR3 ram sitting around that I decided to put into my G750JM. I was planning on eventually buying some nice/new sticks but figured using these in the mean time couldn't hurt, more memory the better right? Luckily I haven't experienced any issues/errors/bluescreens, so I never would have even known. It's been installed and working fine for the last few months, never any extra heat, no issues whatsoever. I can't comment on increased power drain as I keep my laptop plugged in at pretty much all times.

I luckily happened across this thread while I was searching for some new ram to buy. Needless to say I immediately shut down and yanked them out... Before I did I ran CPU-Z and sure enough bank 1&3 were at 1.5, factory slots @ 1.35. I'm just glad no harm was done and I saw this thread. I really appreciate this information, I try to take meticulous care of my laptop and I would be furious if it had caused damage that Asus wouldn't cover. They REALLY need to make it clear to their consumers that 1.35 is required, especially since even someone relatively tech savvy who would open the laptop would most likely find sockets that say "1.5v" -.-

haydenwse
Level 7
I ran CPU-Z and it shows that I have 2x4GB Hyundai Electronics in slots 2 & 4. Unfortunately I have not been able to find this brand in the stores my area. Is there any way to find out if the PNY is any good or compatible if the computer will not boot?
I was told that I could load a single 8GB stick into slot 1. Is this correct or do I need to add them in pairs?

haydenwse wrote:
I ran CPU-Z and it shows that I have 2x4GB Hyundai Electronics in slots 2 & 4. Unfortunately I have not been able to find this brand in the stores my area. Is there any way to find out if the PNY is any good or compatible if the computer will not boot?
I was told that I could load a single 8GB stick into slot 1. Is this correct or do I need to add them in pairs?


haydenwse, mixing and matching foreign memory can work, and cannot work, it's hard to predict. That's why I suggest getting the same memory as already installed, or filling all 4 Slots with new memory all the same.

If you can't find the memory locally, then order it online. It costs less and often shipping is free, you only need wait a day or two depending on shipping.

Type in the model number, and do a search, look on Amazon, Ebay, etc. I save some $ by getting memory pulled from a Macbook. It works fine, and is the exact same part number.

If you want to type in the model number in a post, we can search for it for you. Where are you located, what country?