G750 Upgraders: 1.35V memory is required!

[X-ROG]

Please note we fit 1.35V memory into our G750s. New Haswell CPUs require this and using 1.5V memory can 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.

Also remember for every DIMM you add you increase the power consumption by 1-3W each, depending on what you buy.

Once I get ahold of a G750 to borrow for a few days I'll do an upgrade guide.

[Angellus]

xbcxbc wrote:
yes, the lack of technical documentation is very frustrating. It doesn't need to be in the printed manual but at least a detailed pdf should be available for download - it really wouldn't cost asus anything and it'd go a long way to make this product look professional. I had similar amateurish experiences with previous rog g laptops - i've used 4 so far. Decent hardware, acceptable prices, soiled by these kind of really primitive mistakes. I'd rather just pay $50 more for the laptop if that covers the cost of putting together a decent tecnical documentation.

When i called vip support about about how to get to the memory, the support guy kept bleeting "i'm sorry sir, we don't provide this kind of information...". The poor guy really pissed me off although it wasn't his personal fault. What's the point of making a high-end laptop (even targeted for modders) when getting information on how to extend it is near impossible?

i agree!!!

[BobbyCannon]

Well I got my new RAM in and installed. It worked on the operation table when I tested it. I put the bottom lid on and it was done. I did have a weird moment though where when I moved the laptop from my operation table to the actually desk. The laptop would not boot. I flipped it over and popped the bottom lid off and reseated the bottom RAM. Once I did that it booted again. This makes me nervous because I will be traveling with this laptop. I hope this doesn't become a future issue... I'm going to post some disassemble pictures in my other thread.

[BobbyCannon]

I cannot thank you enough Marshall for creating this thread. It saved me a lot of time and headache. However just letting you know that I hand contacted support and they suggested my issue was because of the speed of the RAM (1866). Without your post I could have ordered another set of RAM that would not have worked. I would have ordered the same Corsair Vengence RAM but at a speed of 1600. This would have been very frustrating. If there is anything you can do to help educate your support staff I would suggest it. Something like MEMO or something to where they will know to ask about the voltage of the RAM.

Thank you again for making this post and helping me get my RAM issues fixed. I'm now enjoying my G750 with a full 32gb of RAM. Woot!

[Kev_Row]

I purchased A G750JH-DB72-CA. It comes with 16GB of Memory and like many, I. thought I would like to max it out to 32gb. I requested from my sales rep whether it came 2x8 or 4x4 The answer was 4x4 (4 sticks 4GB each), which I became aware later was incorrect. I ordered memory from Crucial Part # BLS2K8G3N169ES4 Spec DDR3L PC3-12800 • 9-9-9-24 • Unbuffered • NON-ECC • DDR3-1600 • 1.35V • 1024Meg x 64. I ordered 4x8GB direct from Crucial and had them delivered my mail to avoid the nasty custom charges. I received my notebook before the memory only to find that the installed memory was 2x8GB SK hynix HMT41GS6AFR8A-PB NO Spec DDR3L PC3-12800 11-11-11-35 Unbuffered NON-ECC DDR3-1600 1.35V • 1024Meg x 64. The installed memory is CL-11, whereas my new memory is CL-9, a little faster, so I decided to replace all 4 sticks. I had a chat session with Asus. They advised me that my warranty would be void if I replaced the upper two modules, no mater who I had do the work. Fortunately there is a Asus factory repair depot close by me where they advised me they could change out the memory without voiding the warranty. I had the work done. It was not cheap but it was done well. I confirmed that I am running at the 9 9 9 24 timing but having trouble confirming that I am operating at 1.35 Volts. Do you have a way to confirm the memory operating voltage? I have tried lots of Tweak software but none will tell me the actual running voltage. I really like this notebook and want to make sure it is operating at 1.35 so as not to do damage. I would be grateful for you suggestions.

[cosmicmango]

Kev Row wrote:
I purchased A G750JH-DB72-CA. It comes with 16GB of Memory and like many, I. thought I would like to max it out to 32gb. I requested from my sales rep whether it came 2x8 or 4x4 The answer was 4x4 (4 sticks 4GB each), which I became aware later was incorrect. I ordered memory from Crucial Part # BLS2K8G3N169ES4 Spec DDR3L PC3-12800 • 9-9-9-24 • Unbuffered • NON-ECC • DDR3-1600 • 1.35V • 1024Meg x 64. I ordered 4x8GB direct from Crucial and had them delivered my mail to avoid the nasty custom charges. I received my notebook before the memory only to find that the installed memory was 2x8GB SK hynix HMT41GS6AFR8A-PB NO Spec DDR3L PC3-12800 11-11-11-35 Unbuffered NON-ECC DDR3-1600 1.35V • 1024Meg x 64. The installed memory is CL-11, whereas my new memory is CL-9, a little faster, so I decided to replace all 4 sticks. I had a chat session with Asus. They advised me that my warranty would be void if I replaced the upper two modules, no mater who I had do the work. Fortunately there is a Asus factory repair depot close by me where they advised me they could change out the memory without voiding the warranty. I had the work done. It was not cheap but it was done well. I confirmed that I am running at the 9 9 9 24 timing but having trouble confirming that I am operating at 1.35 Volts. Do you have a way to confirm the memory operating voltage? I have tried lots of Tweak software but none will tell me the actual running voltage. I really like this notebook and want to make sure it is operating at 1.35 so as not to do damage. I would be grateful for you suggestions.

Download and Install HWINFO64 it will show you the voltage, you can get it at the link below:

http://www.hwinfo.com/download.php

[Lucius_Snow]

Hi all

I've bought 8 (2x4) GB of extra RAM for my G750JX and it crashes the PC (blue screen) when i use a lot of ressources (video rendering).

This is the model :
MT16KTF51264HZ-1G6M1

https://www.micron.com/parts/modules/ddr3-sdram/mt16ktf51264hz-1g6
http://www.amazon.com/Micron-PC3-12800-1600MHz-unbuffered-MT16KTF51264HZ-1G6M1/dp/B00A8ISYWK

This is 1,35V so i don't understand what the problem is.

Any help appreciated.

Thanks.

[dblkk]

Does anyone know if it does/should work or why it doesn't work for me?

Crucial Ballistix Sport 8GB 204-Pin DDR3 SO-DIMM DDR3 1600 (PC3 12800) Laptop Memory Model BLS8G3N169ES4

I put it in either slot, and computer wont boot, but take it out and boots just fine.

[hmscott]

dblkk wrote:
Does anyone know if it does/should work or why it doesn't work for me?

Crucial Ballistix Sport 8GB 204-Pin DDR3 SO-DIMM DDR3 1600 (PC3 12800) Laptop Memory Model BLS8G3N169ES4

I put it in either slot, and computer wont boot, but take it out and boots just fine.

dblkk, so you did already try 1 at a time, and it doesn't work. Well, either it is the rare case of 2 bad SODIMM's, or it is incompatible with the existing factory installed memory.

Here is my response to your other posts:

http://rog.asus.com/forum/showthread.php?45003-New-G750JZ-G750JM-and-G750JS-Gaming-Laptops-Launch-Wi...

[Mjag01]

Where can you buy memory for a G750jz. I don't like going out on the limb and test on my own. If someone could give me the name and place to buy and 8gb stick. would really appreciate it.
Thanks in advance Mjag01

[hmscott]

Mjag01 wrote:
Where can you buy memory for a G750jz. I don't like going out on the limb and test on my own. If someone could give me the name and place to buy and 8gb stick. would really appreciate it.
Thanks in advance Mjag01

The memory Asus, and other manufacturers use, changes from time to time, build to build, so you might find Hynix, Samsung, Hitachi, or? memory in your particular build.

Memory performance is sensitive to SODIMM's being the same performance details - speed, latency, and other less visible details. You can get memory from different manufacturers that is the same speed and latency, and find it isn't compatible, especially if you are trying to match 4GB existing SODIMM's to the 8GB SODIMM's you want to add.

The best way to do it is to get 4 of the same SODIMM's and replace all the memory in the G750. But, that is a pain, because it requires disassembly of the top section of the laptop, and pulling the screen to free the top lid to come up.

The 2nd best way, is to use a tool in Windows to read the make/model of your existing memory, and match it with the same make/model, in either the same size or a size up in the model family.

Here are the tools that are easy to use to see the memory details you need to use to look up on the maker site and sellers to find what you need to add memory.

CPU-Z memory tab:
http://www.cpuid.com/softwares/cpu-z/versions-history.html

HWinfo64 Summary pane - memory module drop down right side, main memory pane:
http://www.hwinfo.com/download.php

AIDA64 - engineer version
http://www.aida64.com/downloads

Once you have the memory module part number, you can do a google search, and find the manufacturer site, find the product family page, and get the part number of the 8GB partm, and then google that to find a good source for it. That 8GB module should match the 4GB module specs and allow you to have 2 x 4GB + 2 x 8GB = 24GB

For me, my G750JH had 3 x 8GB, so I only needed the part number from my existing 8GB SODIMM's, and found a source for the same part number to add a 4th, and that worked out great for me - $99 for a 4th 8GB SODIMM.

Let us know what you have installed, and what you find is compatible and how it works for you 🙂