32GB RAM (16GB x 2) now available for Precision 5510 (i7 and Xeon)

This is off-topic a bit, but that is really weird. Isn't DDR3L memory always 1.35V, and all DDR4 memory always 1.2V?

There are other typos in the HP ZBook datasheets (like how they list their 4K non-DreamColor UHD display as having 1920 columns of RGB) and the ZBook 15 doesn't specify a voltage for the DDR4 while maintaining the same DDR4 PNs. I wonder (assume?) if this is just a copy and paste typo from an earlier DDR3L-based datasheet?

 

Accidentally posted twice. Oops, sorry.

 

If no one else have had their chance, I'll try adding ECC modules when I get my 5510.
Does anyone think one module could do, or does ECC have to be installed in pairs?

 

I haven't tried mixing non-ECC and ECC SoDIMM. That's possibly not a supported configuration.

You should be able to plug in just a single ECC SoDIMM module to see if it works--but according to what Dell said I'm not even sure if you'd be able to tell if your more expensive ECC RAM was doing error checking.

 

I'm not about to mix, but thought about starting with 16GB ECC stick. Then add another later on. (Adding 1TB 950 Pro when it's out)

 

The ECC memory controller is on the Xeon chip itself (ECC is disabled in the Core i7), so there really should be no problems.

I should note that these memory errors are pretty rare, and for the most part ignored in most consumer (gaming) computers where frame rates are king and an occasional crash is beared. For higher end CAD, FEA analysis and such, when a crash is not tolerated and maybe expensive, ECC is used. But I think even non-ECC memory is protected by code and algorithm to prevent crashes in most cases.

 

Still not sure if a Xeon Precision 5510 will work with ECC RAM, but I just noticed that HP is now selling ZBook Studios with Xeon and ECC RAM and they were kind enough to give out the PNs

For those with Precision 5510s who want to see if ECC RAM will work (and if it will provide any benefit), here are HPs PNs. Hopefully these are less expensive than other 16GB ECC sticks. In any circumstance, the non-ECC ones should be really nice quality for XPS 15s and Core i7 builds.

HP 820571-001 - 16GB Non-ECC
HP 835886-001 - 16GB ECC

 

I can't see why not. Since the DIMM have a direct bus to the processor, same number of pins, and the memory controller resides on chip (Xeon), it should work. I believe this has been the case the past few generations.

Desktop guys have been putting pin compatible Xeon chips and ECC in consumer mobos for quite some time.

 

What's supported and what will work but is unsupported have been different for years.

 

Has anyone tried putting ECC RAM in the Precision 5510?

Mano G. from Dell seemed to indicate that the machine would support ECC RAM with Xeon processors, at 53 seconds into this Precision 5510 interview.
http://www.redonapp.com/ytv/-k4kwgaO2PA/Dell-Precision-5510-mobile-workstation

Mano also pitched in on the forums here, letting us know that Precision 5510 does not support ECC RAM.

Does this mean that only some configurations (with Xeon and also with vPro?) of Precision 5510 have the chipset to support ECC RAM? Or that Dell ships non-ECC RAM, but ECC RAM is compatible? Or...that Precision 5510 just doesn't support ECC RAM? And if we installed ECC RAM, would it work as non-ECC RAM?

ECC RAM is fairly pricey compared to non-ECC RAM, especially the larger sticks. Dell-Mano-G, if you're out there, can you fill us in on the details so we can order the right configuration? It would be really great to be able to use ECC RAM in the Xeon Precision 5510s.