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Question

Asus P7P55D-E LX ram problem. Please help?

by pfross / February 1, 2018 11:41 PM PST

I have an Asus P7P55D-E LX motherboard with an Intel i5 chip. This motherboard calls for either DDR3 1066, 1333, 1600 MHz ram. I have bought Kingston HyperX Genesis(KHX1600C9D3K2/8GX). However my motherboard will not boot up off of this. The ram is good I have tested in another PC and it worked fine. Whilst doing some troubleshooting I put in ram from a friends PC and it had booted and ran fine. Allowing me to install windows 10 etc. Come to find out the ram I used was DDR3 2666 (F3-2666C11D-16GTXD). This ram is bigger than what my motherboard should have been able to run according to Asus specs. I do know these are dated components but are what I have and can’t afford to spend money on newer ones. So my question is how am I able to run such a higher ram set and should I just buy this particular one or how would I be able to make my 1600mhz work?

Mobo: Asus P7P55D-E LX
Processor: Intel P55 LGA 1156 Chip
GPU: Nvidia GTX 546 Ti

P.S. I am a newbie when it comes to computer parts and building, this being my first build. Any and all advice would be greatly appreciated.

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Clarification Request
Can you rewrite your post ...
by Kees_B Forum moderator / February 2, 2018 12:21 AM PST

so that your situation is clear. It isn't at the moment.

For example, is the RAM you "bought" the same as the RAM you "used"?
What is "bigger"?
What are the "dated components"?
What is "this particular one"?
What is "a higher RAM set"?
What is "my 1600mhz"?

If the RAM you bought is incompatible with your motherboard, don't use it.

Post was last edited on February 2, 2018 12:23 AM PST

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Hopefully clarified
by pfross / February 2, 2018 1:08 PM PST

What’s bigger is the ram I used for troubleshooting which is the DDR3 2666MHz. Which is also the higher ram set I am mentioning. The dated parts are basically everything I’m using. I say this because most people would just say to buy new and build from there. And my 1600MHz is in reference to the Kingston hyperX I bought. According to Asus website specs for my mobo the Kingston HyperX is compatible. It meets the requirements to perform but it doesn’t physically do so. This is why I am stumped and unsure what my next steps to figuring out this problem should be.

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Where is that written?
by R. Proffitt Forum moderator / February 2, 2018 2:03 PM PST
In reply to: Hopefully clarified
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It isn’t supposed to
by pfross / February 3, 2018 7:35 AM PST
In reply to: Where is that written?

That’s the thing the DDR3 2666 shouldn’t have been able to work with the mobo. When building this PC I bought a 8gb stick of DDR3 1333 but it did not work work so I thought it was DOA. We then took a single stick of 8gb DDR3 2666 and the computer booted up no problem. This is where I am having my issue at.

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When you install parts that are not documented to work.
by R. Proffitt Forum moderator / February 3, 2018 8:26 AM PST
In reply to: It isn’t supposed to

The results will be unknown. Pull up the memory QVL and check it again. I didn't see any sticks over 4GB each.

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My new Ram is 4gb
by pfross / February 3, 2018 2:17 PM PST

The new ram that I had purchased is (2)4g sticks. It’s the part number I put in the original post.

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"I bought a 8gb stick of DDR3 1333"
by R. Proffitt Forum moderator / February 3, 2018 2:24 PM PST
In reply to: My new Ram is 4gb

So I couldn't find any note about 8GB sticks so the results will be unknown.

As to the 2x4GB sticks, nothing tells me these are compatible and your testing tells us they are not.

I know you must be tired of all this now. Time to go with Crucial or a new motherboard?

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You are right.
by pfross / February 3, 2018 4:39 PM PST

So just to clarify, I am best off to get ram from the list you provided for me and use that? And if you could perhaps answer or maybe no one can to the reason as to why the DDR3 2666MHz ram worked? It was a single 8g stick, I believe this is what stumps me the most.

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Possibly a stupid question
by pfross / February 3, 2018 4:44 PM PST

The Asus mobo I am using has a feature called the MemOK! Could this be the cause of any of my problems?

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I've never heard of this causing issues.
by R. Proffitt Forum moderator / February 3, 2018 5:09 PM PST

The only recurring problem I run into are machines folk put memory into that fit and they hoped it would work. Since the min shop charge is 150 and RAM is cheap sometimes we just fit the right RAM, test and return it for that much. It's not funny when the owner insists we get their RAM to work. No Gods in the shop I fear.

As to QVL RAM that's usually hard to find. That's why I use Crucial.

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Thank you
by pfross / February 4, 2018 12:13 AM PST

Okay so I have picked out a new ram to get. CT2K51264BD160B It’s Crucial like you suggested. Thank you for helping get to the bottom of what I needed to do. I can definitely say I’m coming out of this a tad bit smarter on the subject. Didn’t realize (probably like most novice builders) that there are certain RAMs to get.

All Answers

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Answer
Using the ram you bought
by Bob__B / February 3, 2018 1:08 AM PST

Use one stick only.
Test in each slot on the mobo.

Repeat the test with the 2nd stick of ram.

What are the results?

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I have done this
by pfross / February 3, 2018 4:41 PM PST

I tried an individual stick in each spot and then I also used both sticks in a variety of spots. Each time giving me the same results. Black screen and “running” computer.

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Ram
by Bob__B / February 3, 2018 11:21 PM PST
In reply to: I have done this
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Thank you
by pfross / February 4, 2018 12:13 AM PST
In reply to: Ram

Thank you for the link and advice. Much appreciated and has led to the discovery of my next buy. Thanks!

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