Asus P6T (x58 chipset) - 16GB of RAM installed - 8GB recognised by the BIOS

miklleb · Nov 1, 2014

Hi Guys

Firstly, let me say thank you in advance to anyone taking the time to answer this query.

In essence I have recently installed 2 x 8GB Corsair Vengeance RAM modules into my Asus P6T Mobo. The BIOS does not detect both memory modules even after trying many different physical configurations. I have trawled the net and tried many many different BIOS edits and still have met with no success.

I am running Windows 7 64bit and windows also only detects 8GB.
When i run CPU-Z both 8GB modules are detected (=16GB).

My understanding is that this issue may lie in getting my voltage right but in truth i have been trying various default ASUS x58 chipset configurations.

I am no overclocking expert and rarely venture into the BIOS but over the past few days have gotten rather familiar with the myriad of settings that pertain to the x58 chipset's voltage configurations.

Please may i get your thoughts?

*salute

Darkbreeze · Nov 1, 2014

Do you have them installed in the correct slots? They might be recognized but not utilized if they are not in the correct slots for 2 module operation.

Darkbreeze · Nov 1, 2014

What is the EXACT model of your motherboard as well as any revision numbers? Is it JUST P6T or are there additional identifiers? Because looking at the ASUS manual for that board, it states that it only supports 1 and 2GB modules. Six slots times 2GB would equal the 16GB max that it supports so it doesn't seem to be a misprint. I'm surprised it's recognizing any 8GB modules at all since that's the case.

SchizTech · Nov 1, 2014

Darkbreeze :

Your math is wonky but you seem to have the right idea. Typically x58 supports 6x4GB for 24GB max. The OP is using higher capacity sticks than his board supports.

miklleb · Nov 1, 2014

Darkbreeze :

Hi Darkbreeze

I replaced the original 2 x 4GB Kingston RAM modules by placing the new modules in the same slots (both orange). I also tried quite a few other slots in case and only after realising that only 8 GB were being detected.

Darkbreeze · Nov 1, 2014

Some of the MB manual information seems to be in conflict though as seen below. It indicates in one spot that the modules should be used in one place when two modules are used, and then in another. My guess is single channel versus dual channel, but that's not how it's outlined. You might try either of these configurations to see if it works, assuming of course the manual was also wrong about the supported module sizes.

Darkbreeze · Nov 1, 2014

SchizTech :

Darkbreeze :

Your math is wonky but you seem to have the right idea. Typically x58 supports 6x4GB for 24GB max. The OP is using higher capacity sticks than his board supports.

My math IS wonky! Jesus, I better go back to school or get a better calculator. Sorry about that.

miklleb · Nov 1, 2014

Hi guys

I have tried XMP mode but no luck. SchizTech - am I wasting my time with 8GB modules?

SchizTech · Nov 1, 2014

miklleb :

I suspect so. It can't hurt to do a few more checks but you might want to make sure you can return those new sticks.

Paul NZ · Nov 1, 2014

According to the ASUS site this mobo only supports up to 24 GB. And its got 6 slots. So, you CANT install 2x8 sticks

So I would say each slot will only support up to 4 GB max in each slot

Darkbreeze · Nov 1, 2014

As I said already, the board is not supposed to support them. But, you still haven't said what the exact version of the board is. It should be printed on the board. There are several versions and they're all different in configuration. There is a P6T, P6T-Deluxe, P6T-WS Professional, P6T-SE and P6T-Deluxe V2, and maybe more. They probably all support different memory sizes and configurations so it would help to know which one you actually have.

SchizTech · Nov 1, 2014

Have you tried to run one of the 8GB sticks by itself? If one stick shows up as 4GB that would strongly imply that 8GB sticks are not supported.

Paul NZ · Nov 1, 2014

All of them still support a max of 24 GB

Like I said I dont think it supports 8 GB sticks since it only supports up to 24 GB max.

And 8X6 DOESNT = 24

miklleb · Nov 1, 2014

Thanks SchizTech And Paul. darkbreeze - it's definitely the P6T and not any of the latter models.

miklleb · Nov 1, 2014

Have tried a single module and 8GB were detected.

Darkbreeze · Nov 1, 2014

SchizTech :

+1.

But I'm interested in knowing why the manual states it doesn't support larger than 2GB modules as well.

Paul NZ · Nov 1, 2014

Well one 8 GB stick may work but one of the other 5 would have to be under 4 GB

Darkbreeze · Nov 1, 2014

I don't recommend using unsanctioned memory. Return them and get four 4GB modules of the same specs as your original modules and use them all for a total of 24GB. Or just get 2 more, which may be what you should have done to start with, for 16GB since apparently the 4GB modules you originally had seemed to work despite the manual saying otherwise.

miklleb · Nov 1, 2014

Hi Darkbreeze

Apologies, I made a mistake in stating that I originally had 2 x 4GB of RAM - I actually only had 2 x 2GB. Anyway, thank you everyone - it's clear that this board won't support any module bigger than 4GB per slot.

Darkbreeze · Nov 1, 2014

And hopefully that will work. I don't know what's up with the info in the manual. ASUS is "usually" pretty accurate with their documentation. Unlike MSI, Corsair, ECS and some other companies.

Anyhow, good luck with getting that fixed up and you know where we are if you need further assistance. Take care.

Asus P6T (x58 chipset) - 16GB of RAM installed - 8GB recognised by the BIOS

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