Need help identifying RAM incompatible or defect.

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Ayedd Haniff

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Jun 15, 2014
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i3 530 @ 2.9GHz
4gb ram 1333 (2 sticks) Kingston and Mushkin
Asus P7H55M 1156
Radeon HD 7770
Windows & 64bit

Hi, I'm having trouble with my ram upgrade and would appreciate help. Ive tried browsing through threads but couldn't find an answer. So recently i bought a single piece 4gb ram for my computer, on installation i had trouble starting up my pc as it wont even post and i did a bit of reading and attempted several trial and error based on guides and conclude that my ram was defected so i went back to the store and got it changed as the tech support there confirmed it that it was.

So currently i am unsure if its incompatible or my newly replaced ram is defected.


When i tried to install the new piece, this is what happen..

4gb kingston + 2gb kingston or vice versa = wont go past bios screen or would hang on bios screen.

4gb kingston + 2gb muskin or vice versa = load till windows logo animation and restarts itself (repeat process).

4gb + 2gb + 2gb (various combination) = pc wont beep at all, it it does beep it'll restart after bios screen.

4gb alone = load till windows animation and restarts itself.

2gb kingston + 2gb mushkin = working fine


Note:
I tried reading compatibility guide but its not something i understand, i normally troubleshoot my own pc problems through guides or trial and error, never was that good but capable on minor stuff.

As for the ram, my 2gb sticks are bigger than my new 4gb (which is about half the size smaller but same length) dont know if it matters but hope it narrows down the problem. Thank you.





Mobo Website.
http://www.asus.com/Motherboards/P7H55M/

Memory Supported.
http://dlcdnet.asus.com/pub/ASUS/mb/LGA1156/P7H55-M/Intel-P55-H55-4DIMM-Module-QVL.pdf

Note.
Top one is the one im having problem with, two at the bottom is working fine unless combined with the top one (4gb)

Memory Model.
Kingston KVR13N9S8/4 4GB PC3 - 10600 CL9 240 - Pin DIMM (top one)

I have no further details on the two bottom.


 
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Ayedd Haniff

No need to add more info sorry Tom's at my end has been glitching all day and I only just saw you had added a picture that hadn't appeared before.

As best I can determine from that photo these are the two Kingston's:
http://www.kingston.com/datasheets/KVR1333D3N9_2G.pdf
http://www.kingston.com/dataSheets/KVR13n9s8_4.pdf

The stats indicate one identifiable difference; the Refresh to Active/Refresh (min.) command time (tRFCmin). The 2G sticks work and have a lower (tRFCmin) and the 4G stick doesn't work which has a higher (tRFCmin), respectively 110ns vs 260ns. Otherwise they are identical as far as available data sheets go. I can't find a similarly detailed data sheet for the Mushkin which would help make the argument...
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Pibee

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Sep 21, 2013
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Hi Ayedd Haniff

The Asus P7H55M 1156 runs dual channel memory that implies you'll succeed increasing your overall ram GB's when you combine identical dual channel Ram. Listed above you have 2x 2GB and also 1x 4GB sticks in one case scenario with Muskin and Kingston combined that didn't work. try the 2 2Gb sticks together if they are dual channel and otherwise identical sticks or the 4GB but they aren't likely to work together.
 
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Ayedd Haniff

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Jun 15, 2014
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Hi there, my working combination is the two 2gb kingston + 2gb mushkin (has been using it for over a year). The problem is that the new 4gb ram that i bought wont run on my pc as mentioned in the scenario .

 
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Ayedd Haniff

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Jun 15, 2014
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Hi there, i raised my ram voltage to 1.575 and try to run the new 4gb ram but still the same problem. It loads all the way to windows starting screen but as the windows logo about to pop out and glow part it restarts itself.

I'll upload a picture of all my 3 rams. May be on my 1st post as updated.
 
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Pibee

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Sep 21, 2013
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Ayedd Haniff

Ok let's see if we can clear a few issues up that might help shed light on the issue and hopefully make sense and resolve the problem or at least understand it.

The "Memory Supported" link you added to your first post isn't the correct one for your chip which is a Clarkdale on a Westmere microarchitecture. The correct list is titled "P7H55-M Memory QVL for Clarkdale CPU" and is the second one of 3 that can be found here:

http://www.asus.com/Motherboards/P7H55M/HelpDesk_QVL/

I did a word search for the 4G Ram stick on the correct QVL list using the above info, i.e.: "Memory Model. Kingston KVR13N9S8/4 4GB PC3 - 10600 CL9 240 - Pin DIMM" < It isn't on that list.

Your successfully using two pairs of stick from different manufacturers for over a year is more a stroke of luck than a wise practice as finding pairs that will work together from different manufacturers will be a costly practice if it becomes a habit and for a few reasons. Some time ago it was possible to get "lucky" easily and use mismatched sticks either by manufacturing origin or size/capacity however, often one pair would fry long before it should have if not for the mismatch.

QVL list aren't an absolute but they can be helpful in avoiding problems, returns, wasted time and perhaps money as well.

Could you if it's not too much trouble also list the details of the RAM that has worked.


 
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Ayedd Haniff

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Jun 15, 2014
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4,510


Hi Pibee, my apologies on the wrong link.

As mention i am not so good at all this as i only learn through trial and error and guides when currently facing problems, which proved to be costly. So much for avoiding or prevention x.x

Only recently i came to be aware of the downside of mixing memory from different manufacturer and will not repeat for future rigs. I will keep the QVL list in mind for future builds thank you.

I assumed it was incompatible as it is new, and from past experience defected ram would simple cause the pc to beep or not start at all but this one did up to the windows startup screen. But i am sorry as i can not provide you the details of the working RAM as i no longer have the box, or i do not know how, i did however include a picture of it on my first post. Hope it helps.
 
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Pibee

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Sep 21, 2013
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Ayedd Haniff

No need to add more info sorry Tom's at my end has been glitching all day and I only just saw you had added a picture that hadn't appeared before.

As best I can determine from that photo these are the two Kingston's:
http://www.kingston.com/datasheets/KVR1333D3N9_2G.pdf
http://www.kingston.com/dataSheets/KVR13n9s8_4.pdf

The stats indicate one identifiable difference; the Refresh to Active/Refresh (min.) command time (tRFCmin). The 2G sticks work and have a lower (tRFCmin) and the 4G stick doesn't work which has a higher (tRFCmin), respectively 110ns vs 260ns. Otherwise they are identical as far as available data sheets go. I can't find a similarly detailed data sheet for the Mushkin which would help make the argument that that's the culprit barring the 4G stick being defective.

Beyond that it seems rather simple the 4G doesn't work in your rig but your not out any GIG's whether using one 4G or 2x 2G and as the old saying goes "no need to fix what ain't broke".
 
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Pibee

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Sep 21, 2013
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He he trial and error is a good methodology, we all use it for most things and in the end that's how we learn... I used your problem to learn stuff as well so when we can it's a win win as you can never know to much.

Cheers Ayedd
 
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