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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...
So back to the Ultra 4...
I'm a bit late to the party, but my Ultra 4 is swapping too much these days and needs more RAM... sadly 4GB DDR2 SO-DIMMs are getting very hard to find (in Australia at least), so am likely going to end up getting it from overseas if I want 4GB.
There's not been much discussion about memory modules that don't work on the Ultra 4, perhaps this is because the Ultra 4 just works with most/all the 4GB modules out there? I've seen a few confirmations (Corsair, Patriot and I think G.Skill) but no particular failures with the Ultra 4. That said... I'm keen to know if anyone can confirm for the Ultra 4:
maximum memory rank?
I don't see any mention of non-working 4GB modules so am guessing it's at least 2? From this post the Ultra 4 comes with ASint DDR2 1GB 667 MHz, but the manufacturer's specs (PDF) (via here) isn't quite self-consistent and in one place says the 1GB module is always Rank 1 (table on page 1) and elsewhere says the 1GB module might be Rank 2 (page 7). Even so, its not clear if a Rank 2 module was used, so hard to be sure—is there another way of finding out the rank limits?
CAS latency limitations
Is there a min/max limit for compatible RAM modules? Does it actually even matter? Again, the original RAM data sheet claims "5-5-5" so presumably at least CL5 at 667MHz or CL6 at 800MHz should work?
Otherwise I've gathered that it supports up to 4GB in a single slot, and either 667 or 800 MHz should be OK (with no likely real-world difference between the two).
I'm a bit late to the party, but my Ultra 4 is swapping too much these days and needs more RAM... sadly 4GB DDR2 SO-DIMMs are getting very hard to find (in Australia at least), so am likely going to end up getting it from overseas if I want 4GB.
There's not been much discussion about memory modules that don't work on the Ultra 4, perhaps this is because the Ultra 4 just works with most/all the 4GB modules out there? I've seen a few confirmations (Corsair, Patriot and I think G.Skill) but no particular failures with the Ultra 4. That said... I'm keen to know if anyone can confirm for the Ultra 4:
maximum memory rank?
I don't see any mention of non-working 4GB modules so am guessing it's at least 2? From this post the Ultra 4 comes with ASint DDR2 1GB 667 MHz, but the manufacturer's specs (PDF) (via here) isn't quite self-consistent and in one place says the 1GB module is always Rank 1 (table on page 1) and elsewhere says the 1GB module might be Rank 2 (page 7). Even so, its not clear if a Rank 2 module was used, so hard to be sure—is there another way of finding out the rank limits?
CAS latency limitations
Is there a min/max limit for compatible RAM modules? Does it actually even matter? Again, the original RAM data sheet claims "5-5-5" so presumably at least CL5 at 667MHz or CL6 at 800MHz should work?
Otherwise I've gathered that it supports up to 4GB in a single slot, and either 667 or 800 MHz should be OK (with no likely real-world difference between the two).
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