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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!
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151 REPLIES 151

x7007 wrote:
So in this picture, do you have 2 slots on the place we are looking at ? or is it 3 slots ? you can add a memory stick to there without opening the keyboard ?


Happyllama wrote:
Greetings gents.

I've been silently stalking this thread on information on the inner workings of upgrading the DDR3L on my G751JM. After reading here a bit, I need clarification on how the layout actually exists on the G751's.

Case in point, here's the HWInfo and the CPU-Z information in tandem of my system. You'll notice how the HWinfo claims ram slots #1 and #3 are being utilized, whereas the CPU-Z diagnostics claim it is slots #2 and #4. FWIW, I seem to be running 2x 4Gb (8Gb total,) of DDR3L in the non-user accessible area. Any clarification anyone would be happy to give me on how come I am seeing this discrepancy? Or am I reading to much into this? It is my end goal to upgrade all four SODIMMs' here in the near future (someone recommended G-Skillz RIpjaws earlier...) but if not, I want to make sure I leave myself a viable option in the user accessible area and that they all jive.
45495
45494

Post Edit: I am currently running Dual Channel per CPU-Z.


x7007 - yes, when you receive 24GB from the factory - there are two sticks "under the keyboard" and there is one stick installed (with the open slot) via the user-accessible area on the bottom of the laptop.

Happyllama - those are two empty slots under the bottom of your laptop's user-accessible area - so you can add another couple sticks to max out your RAM. ASUS installed your first two sticks under the keyboard from the factory - they're peaking out at you. 🙂
4710HQ, 980M // 5930K, 980 SC SLI // 4930K, 980 SC // 4770K, 290X Lightning // 1pcent.com

Hello,

I just received my G751JT-CH71. I want to upgrade from 16GB to 32GB. Using CPUZ. I determined the exact type of RAM I have: Samsung - 8192 MB (12800) (http://valid.canardpc.com/b5xlzq). On Amazon I see two matches for this type: http://tinyurl.com/o3h4etb and http://tinyurl.com/q4uoo7j Which one is correct, if any?

Thanks...

yorel wrote:
Hello,

I just received my G751JT-CH71. I want to upgrade from 16GB to 32GB. Using CPUZ. I determined the exact type of RAM I have: Samsung - 8192 MB (12800) (http://valid.canardpc.com/b5xlzq). On Amazon I see two matches for this type: http://tinyurl.com/o3h4etb and http://tinyurl.com/q4uoo7j Which one is correct, if any?
Thanks...


yorel, the reason your can't figure out which one to get is that you don't have specific enough info.

I don't understand why the online registered info for CPU-Z doesn't include the SPD tab info, but that is what you need - the part number of the memory, that exact number is what you need to find the correct memory.

For example, here is my SPD info:

45556

That part number is what you use to search for what to purchase.

hmscott wrote:
yorel, the reason your can't figure out which one to get is that you don't have specific enough info.

I don't understand why the online registered info for CPU-Z doesn't include the SPD tab info, but that is what you need - the part number of the memory, that exact number is what you need to find the correct memory.

For example, here is my SPD info:

45556

That part number is what you use to search for what to purchase.


Hi, thanks.

Ok I found it: my memory chips are in slots 2 and 4, when I select #2 I see:

45646

Found the chips on Amazon: http://tinyurl.com/q3dar5z

In the meantime I looked at the slots. I am not too sure how to insert the chips with my big clumsy fingers, and I am a software guy 😉 Any instructions somewhere?

Correction - Amazon doesn't have that part. Here it is: http://www.memory4less.com/m4l_itemdetail.aspx?itemid=1469194553

Edweird
Level 10
The bottom of the M.2 mount is about at the level of the drive itself in the right slot. You can tell because the screw brackets are the same level but the M.2 bracket bottom is under that level. It might be a tight squeeze but those newer ultra thin drives might fit in there. On the other hand i don't know if ASUS didn't do something that deactivates the SATA3 port when the M.2 slot is used.

sk3tch
Level 7
Quick update RE: the memory - received it today. It didn't match the picture or description in the auction. 😞

It was HMT41GS6MFR8C-PB - a 1.5v stick. I contacted the seller and he does have the correct one (HMT41GS6AFR8A-PB) - so I'm returning the 1.5v one and he's going to send the 1.35v part. Probably delays me another week. Ah well.

BTW - it worked, but showed up at 1.5v. See below. Not worth the potential risk, especially at $60 a stick. It's in slot 3, as shown below. 45484
4710HQ, 980M // 5930K, 980 SC SLI // 4930K, 980 SC // 4770K, 290X Lightning // 1pcent.com

x7007
Level 7
So if I have 4 slots, 2 slots I saw are taken , that means that the other 2 are underneath and I need to open the laptop ? why why why,,,,,,

x7007 wrote:
So if I have 4 slots, 2 slots I saw are taken , that means that the other 2 are underneath and I need to open the laptop ? why why why,,,,,,


Are you sure all 4 aren't occupied? The two inaccessible ones should always be filled first when you purchase.