06-14-2011 01:55 PM - edited 06-14-2011 01:57 PM
I installed Win7 64-bit on an xw4600 (p/n FL828UT#ABA) for an engineer at work and the 4GB that came with it works fine. I installed 16GB of ECC unbuffered ram of the same speed and got nothing but 5 beeps. I tried each module in slot 1 (just one module) and got the same result. Two modules in slots 1 and 3, same result. Same speed, same error checking, same unbuffered, same voltage...
HP's quick specs say this model supports up to 16GB of DDR2-667 or DDR2-800 ECC unbuffered memory (pg 11):
Part number of the (4) 1GB modules that work in the pc (looks like Hynix is the manufacturer):
Avant is the manufacturer of the ram I tried:
Avant Part number:
I took it back to the shop I bought it from and they said that I may need to try DDR2-667 instead of 800. It's a special order though and 16GB of this type is nearly $500.
It looks like Axiom made the part numbers listed in another link I found on this forum regarding xw4600 ram compatibility issues, but the 4GB module I would be looking for (VH933AA) is discontinued. Any suggestions will be appreciated.
04-18-2012 08:49 AM
I checked the QuickSpecs for xw4600 and it only has support for 16GB (4x4GB) DDR2-800 ECC RAM. I didn't see the DDR2 667 support..
04-18-2012 10:21 AM
I'd like to clarify that PC2-5300 DDR2-667 DIMMs (ECC Unbuffered) is supported in xw4600 system. However the maximum size was 2GB for this speed.
06-12-2013 06:30 AM
I was able to get the computer up to 8GB, but not 16GB. I didn't try non-ecc ram. I'm not sure what the issue is, but by the time the user requires more ram, I will have replaced the pc. Very frustrating since he's an engineer and a friend of mine... I really wanted to max out his ram. He had a few studies of SolidWorks with charts that showed a significant increase in performance when upgrading from 4GB to 8GB, a smaller increase from 8 to 12 and a negligible increase from 12 to 16, so I felt a little better. I don't like leaving something unresolved, but there are too many other fires to put out (as usual).
09-16-2013 11:32 PM
Has anyone got any ideas on this issue please?
I am experiencing exactly the same issues. Whether I insert 1 4GB stick or 2 or 4 4GB sticks all I get is 5 beeps from POST. I don't get anything on display.
I am using VH933AA-HY (Hypertec equivalent), which is 4GB DDR2 ECC PC2-6400 unbuffered.
I have upgraded the BIOS to latest version already also.
Any help appreciated....
02-06-2014 10:31 PM
I just got one of these xw4600 systems. I trust crucial.com more than any other for my RAM needs.
The top upgrade it shows is for 4GB kit (2GBx2), 240-pin DIMM, DDR2 PC2-5300 memory module.
Two of these kits will max it out at 8GB.