RAM Upgrade on HP Compaq 8000 Elite SFF PC

[arst06d]

RAM Upgrade

Came installed with 2 * 2GB modlules (4GB total).

Manual (and scanner from Mr Memory) says it will take max 16GB (4*4GB) - so I ordered the recommended DIMMS from Mr Memory.

Installed all 4.  5 Beeps repeated, and the fan goes bonkers, no bootup.

Took DIMMS out of bank 2 so the original slots were filled with 2*4GB.  Boot no problem and recognised the new capacity.

Tried each DIMM individually in Slot 1 (no problem) and in combination in Slots 1 and 2 (no problem).  So, I know the new DIMMs are all OK.

However, as soon as I put anything in Slot 3 and 4 I get the beeps, no boot.

I even tried the new modules in Slots 1 and 2 with the original modules in Slots 3 and 4 - 5 beeps etc.

I reported back to  Mr Memory and sent a pic of the original modules.  They said the original speed was 8500 but the replacement DIMM were PC3-10600 1333Mhz but the ORIGINALs were 8500, so just received replacements of 4 * 4GB DDR3 PC3-8500 1066Mhz.  Their thought was that the PC was "used" to running 8500 so a higher speed was confusing it.  Sounded odd to me since the manual says 10600 should be OK - and indeed they worked in Slots 1 and 2.  But what do I know?

Tried all the new 8500 DIMMS individually and in combination as before, same results.  Don't like anything in Bank 2 (Slots 3 and 4) even the original DIMMS.

Bank Holiday in UK now so Mr Memory closed until Tuesday.

Looking for ideas as to why Bank 1 (Slots 1 and 2) is OK but Bank 2 (Slots 3 and 4) error.

Is there a BIOS setting or something similar?

Is the MoBo borked?

Clutching at straws here, losing what little hair I have left and appreciative of any assistance/ideas.

[Paul_Tikkanen]

I wouldn't be able to help you with why the memory you bought isn't working other than to say that I have an 8000 Elite CMT which has been happily running 4 x 4 GB of DDR3-1333 (PC3-10600) memory for years.

I can tell you this however...it is extremely hard to find the right memory to install in the HP 8000 Elite and 8100 Elite model series.

This is the exact memory I used in my HP 8000 Elite:

Patriot Signature DDR3 RAM 4GB (1X4GB) 1333MHz CL9 UDIMM Desktop Memory Module - PSD34G13332 at Amaz...

I don't see that it is available on Amazon UK, but I did see some for sale on eBay UK:

PSD34G13332 for sale | eBay

Did you try installing two of the 4 GB memory chips with the 2 x 2 GB chips?

When you install in mismatched capacities, the memory needs to be installed so it is the same capacity for each bank.

So...4 GB  + 2 GB + 4 GB + 2 GB, or you can do 2 GB + 4 GB + 2 GB + 4 GB.

I'm thinking your PC just doesn't like the Mr. Memory chips for one reason or another.

Probably the density is too high.

[arst06d]

Hi, and thanks for the response and guidance.

As I said, I did try mixing the old and new memory in various combinations but no good.  Anything in slots 3 and 4 causes the error.

I'm confused why the new DIMMs work in Slots 1 and 2 but not Slots 3 and 4.

Do you think the chips you see on ebay would be OK with 2 of the new DIMMs I have?  They are PC3-10600 whereas I have PC3-8500 (1066Mhz)?

[Paul_Tikkanen]

You're very welcome.

I think they would be OK with the original 2 GB chips that came with your PC.

I do not believe they will work with the new 4 GB memory chips you bought.

[Paul_Tikkanen]

Hi:

I found this discussion from 9 or so years ago pertaining to the 8100 Elite CMT, and the memory I recommended that should work, is also available on eBay.UK.

Solved: Re: Which memory for HP CPQ Elite 8100 Convertible Tower - HP Support Community - 4892569

F3-10600CL9D-8GBNT for sale | eBay

I think it is a matter of finding the right memory to work in your PC.