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ASUS and Memory

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January 29, 2013 3:33:34 AM

Hello... have ASUS P8Z68 Gen 3 MB. Will manage up to 32Gb RAM. I have 4, 8-gig sticks installed, but the system only sees 24 instead of 32.

I'll add more info if needed. Anyone run into this, or know why it would occur?Why the full 32 gigs doesn't show up?

More about : asus memory

a c 559 V Motherboard
a c 150 Ĉ ASUS
a b } Memory
January 29, 2013 3:56:09 AM

Hi, Does the system run with single stick installed in each slot? Are the 8 GB recognized in each slot?
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January 29, 2013 4:41:47 AM

alexoiu said:
Hi, Does the system run with single stick installed in each slot? Are the 8 GB recognized in each slot?


It runs with a single stick in one slot. There are 4 slots, of course. Except that when I put an 8 single in a slot, the system only "sees" 4. It's like stuff is getting cut in half.

I have not tried this in each slot. But I could try if needed. Thanks.
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a c 559 V Motherboard
a c 150 Ĉ ASUS
a b } Memory
January 29, 2013 4:53:47 AM

Try in each slot. See if only 4 in each slot.
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January 29, 2013 11:29:35 PM

alexoiu said:
Try in each slot. See if only 4 in each slot.


I tried a stick in each slot. Each one reads 4 GB in each slot. It's an 8 gig stick.

Kingston HyperX KHX1600C9D3K2

I greatly appreciate your help so far, and certainly am hoping for a solution to this strange thing.
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January 30, 2013 1:03:19 AM

Also, if I just want to go back to my original 16 gigs, I can only get 8. Two 8 gig sticks is only giving me 4 gigs each. So things seem to be stuck in 4 gig max. ???
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January 30, 2013 3:10:44 AM

Update:

Slot 1 = 8192 gb
Slot 2 = 4096 gb
Slot 3 = 8192 gb
Slot 4 = 4096 gb

Slot 2 and 4 have 8 gb modules in them. This is very curious to me. They should ALL be 8192, shouldn't they?
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a c 559 V Motherboard
a c 150 Ĉ ASUS
a b } Memory
January 30, 2013 3:55:12 AM

In this case it might be a CPU socket bent pins issue. If deciding to reinstall the CPU, check the socket for bent pins (use a magnifying glass or take a high res picture).
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January 30, 2013 4:59:35 AM

alexoiu said:
In this case it might be a CPU socket bent pins issue. If deciding to reinstall the CPU, check the socket for bent pins (use a magnifying glass or take a high res picture).


Thanks, but the CPU is fine, or the computer wouldn't be working at all. I'll continue to try to find the solution to this. Thanks for all the help so far.
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a c 559 V Motherboard
a c 150 Ĉ ASUS
a b } Memory
January 30, 2013 5:07:17 AM

It's not about the CPU, but the contact between CPU and motherboard. The memory controller is integrated into the CPU and a bent pin (faulty contact with the land grid) would determine issues like the one you're experiencing.
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January 30, 2013 7:26:24 PM

So here's the final conclusion, and some things learned.

It turns out the original memory sticks were NOT 8 gigs. They were 4 gigs. I bought two more 8 gig sticks, and now, added to the 8's I just bought, I have 32.

Everything works fine.

There is no way the system would automatically "dumb down" a memory stick. It can't do that.

I should have known better, and was laboring under the incorrect belief that I had two 8 gig sticks of memory on board. I was wrong. I had two 4 gig sticks, and wasn't aware.

Bottom line: Be more careful. Check twice. Cut once.

Thanks.
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