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Forum Discussion
Ultra 4 Plus Memory Upgrade Advice Needed
I finally got myself a ReadyNAS 'Ultra 4 Plus' after what seems like an eternity. Got it for what I thought at the time was a decent price around two weeks ago for £418 and no it's dropped again t...
as a follow-up, in case anyone's interested...
My Ultra 4 seems happy with the G.Skill 2GB module (F2-6400CL5-2GBSQ), CL5, 800MHz, not sure if it's rank 1 or 2 (dmidecode reports the 'Memory Total Width' as 64bit which I suspect means its single rank, even though the chips are physically on both sides of the SODIMM... also note the Ultra 4 only runs it at 667 MHz according to 'dmidecode', even though both RAM and CPU support 800 MHz)
Oddly, dmidecode also reports that my maximum memory capacity is 2GB, despite others saying they've used 4GB in the Ultra 4. Not sure if this is perhaps a BIOS version issue (which is reported variously as Version: 080016, Release Date: 05/19/2010, BIOS Revision: 8.16, System Version: 05/19/2010 ReadyNAS-NVX-V2 V1.8 ) or if there's actually different hardware configurations with only some supporting 4GB, or if dmidecode is just wrong. For now though, 2GB was a lot cheaper, was actually available, and seems to have resolved my swapping-to-disk issues.
Other possibly useful info, CPU is "Intel(R) Atom(TM) CPU D410 @ 1.66GHz", which according to the specs and/or datasheet, has the memory controller built-in (no northbridge) and ought to support 4GB total RAM at 800 MHz (it looks like it supports 2 or maybe 4 ranks each up to 2GB, which is probably why no one's reported issues with any particular RAM modules not working). So I suspect dmidecode is wrong or I'm misunderstanding it.
My Ultra 4 seems happy with the G.Skill 2GB module (F2-6400CL5-2GBSQ), CL5, 800MHz, not sure if it's rank 1 or 2 (dmidecode reports the 'Memory Total Width' as 64bit which I suspect means its single rank, even though the chips are physically on both sides of the SODIMM... also note the Ultra 4 only runs it at 667 MHz according to 'dmidecode', even though both RAM and CPU support 800 MHz)
Oddly, dmidecode also reports that my maximum memory capacity is 2GB, despite others saying they've used 4GB in the Ultra 4. Not sure if this is perhaps a BIOS version issue (which is reported variously as Version: 080016, Release Date: 05/19/2010, BIOS Revision: 8.16, System Version: 05/19/2010 ReadyNAS-NVX-V2 V1.8 ) or if there's actually different hardware configurations with only some supporting 4GB, or if dmidecode is just wrong. For now though, 2GB was a lot cheaper, was actually available, and seems to have resolved my swapping-to-disk issues.
Other possibly useful info, CPU is "Intel(R) Atom(TM) CPU D410 @ 1.66GHz", which according to the specs and/or datasheet, has the memory controller built-in (no northbridge) and ought to support 4GB total RAM at 800 MHz (it looks like it supports 2 or maybe 4 ranks each up to 2GB, which is probably why no one's reported issues with any particular RAM modules not working). So I suspect dmidecode is wrong or I'm misunderstanding it.
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