Ram to ram compatibility

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XFA24

XFA24

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I have 2 identical ram sticks

One 2 year old and the other is brand new

Are they compatible to each other?

Because when both sticks are inserted, it boots up until the mobo logo but reboots again and again and again( I cant even access BIOS)

How can I tell if ram sticks are not compatible to run in dual channel?

Will my PC even boot up when the ram sticks are incompatible to each other?

Thanks in advance

Oh and by the way, this is the ram I have

G.Skill Ripjaws 4GB DDR3 1333

http://www.gskill.com/en/product/f3-10666cl9s-4gbrl

And my mobo is ASUS P7H55-M LX

Nothing wrong with my ram slots too
 
Solution
azaran
There is the possibility of the board being the issue. But the fact that your known good memory can run through the tests without an issue on the board in both slots, but the new stuff cant even get through one pass would make me question the new memory not the motherboard. Keep in mind that every motherboard manufacture is going to be different so it may just be something is off enough to not work on your system but not so off as to not work on your vendors. Either way, the stick isnt working for you, but your system works without it. Ditch the new stick for a replacement.
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azaran

azaran

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Feb 17, 2010
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First make sure they're the exact same model/part number. From there, according to Asus and G.Skill that memory should work, you're going to need to test the memory and the slots.

First check your BIOS (have just the one known good stick of memory installed so you can boot) and make sure your settings are correct in there, no weird timings or OCing going on. When in doubt, set the board back to defaults.

Try booting with just one stick and then swap the sticks in the same slot. Then switch slots and try it again.

Also try running a RAM diagnostic software like Memtest 86+.

Your going to need to narrow the problem down to memory stick or slots. Since you just got a new a stick, it might just be you got a bad stick. It happens. Slots also go bad sometimes. Your board is a few generations old and sometimes parts give out. So take that in to consideration and test out each part.
 
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XFA24

XFA24

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yeah, they are exactly the same, they only differ by age

the old ram stick works on both slots

I tried memtest on each of the sticks

the old one passed on both slots

the new one barely passed 14% of test 1(0% PASS) on both slots, it is stuck on 14%

is it even possible that the new one aint compatible with my motherboard?

and in the bios, the ram settings are set on auto(default)

but im quite confused when the vendor tested it, he told me that the new stick passed(but I wasn't there to see and to confirm that it really passed)

but when I boot the computer using the new ram stick only, it reboots after i reach the windows starting logo
and when I access BIOS, it shows that the ram is detected

oh and i forgot to mention that the BIOS installed is the latest release
 
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XFA24

XFA24

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yeah, the new stick by itself cant pass 1 pass of the memtest

is it possible that it's the motherboard that is the problem?

even though my old ram stick can run on either of the lots?

do you think that the vendor lied to me about the new stick of ram passing the memtest?

he used another mobo which they use for testing

my memtest on my mobo proves him otherwise though
 
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azaran

azaran

Splendid
Feb 17, 2010
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26,960
There is the possibility of the board being the issue. But the fact that your known good memory can run through the tests without an issue on the board in both slots, but the new stuff cant even get through one pass would make me question the new memory not the motherboard. Keep in mind that every motherboard manufacture is going to be different so it may just be something is off enough to not work on your system but not so off as to not work on your vendors. Either way, the stick isnt working for you, but your system works without it. Ditch the new stick for a replacement.
 
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Solution
XFA24

XFA24

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That's the problem, they wont replace it because when they tested it, it worked for them
 
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