Chipkill support on Xeon-E3 and similar platforms?

[Mark R]

Does anyone know if the Xeon E3 platform supports chipkill, and if regular DDR3 unregistered DIMMs are available with chipkill?

 

[Emulex]

ibm's chipkill works with UDIMM ECC and RDIMM ECC (of course never try to mix them).

many other manufacturers have similar technology but iirc ibm coined chipkill

 

[Voo]

ibm's chipkill works with UDIMM ECC and RDIMM ECC (of course never try to mix them).

many other manufacturers have similar technology but iirc ibm coined chipkill

Yeah iirc Intel calls its variant SDDC, but I didn't find any current documents with a quick google search. Because really that can hardly be all xX

 

[Emulex]

pretty much everyone oem has the same thing under a different name. it's not really tied to a specific ram. ibm selling chipkill ram is silly since all server ram works given its a function of the MCH - but there are some rules that may need to be followed as far as chip-bit size. i just don't really worry about it. if you need more redundancy there are far more effective methods for mirroring/etc.

also i never use UDIMM they do not protect against address line errors like RDIMM. the cost penalty and ability to run large amount of dimms makes RDIMM the only choice when designing decent servers. UDIMM is for the low end stuff and the price difference isn't really that much given that RDIMM is sold in such quantity for the larger servers its nearly price parity these days.

Is the E3 a low-end product? that might explain the use of UDIMM but when you are deploying lots of servers you can generally force the supplier to pricematch the UDIMM to RDIMM in quantity and never have to worry about bus loading or address line errors cropping up. servers really should never ever ever fail in that respect past burn-in.