Mix ECC and non-ECC?

tsundereAkitaki · Mar 27, 2015

Hello,
My question is simple, can I mix ECC and non-ECC DDR3 RAM if they happen to match up? Same timing and speed, for instance, only one is ECC and the other is not?
Thank you in advance

Calculagator · Mar 27, 2015

Not usually. There is a remote possibility that the ecc memory could run as just a standard unbuffered dimm (I have heard that sometimes ecc RAM can work on a non-ecc platform just without the error correcting), but that is unlikely to work.
If the ECC is buffered or registered, there is no way it will work.

COLGeek · Mar 27, 2015

No, these will not work together. Many motherboards simply won't work with ECC memory either.

Saberus · Mar 27, 2015

Short answer: No. Even if they 'match up', it's not recommended.

Long answer:
Unbuffered ECC might work with regular unbuffered, but it might not be stable.
If it's fully buffered, it won't fit in the slot as the key notch is different.
Registered and unbuffered have the same keying, but will not ever work together, because registered delays the output by one clock cycle by design (as you're talking to the memory through the register, whereas unbuffered talks directly to the memory).
It's better to never mix memory types.

tsundereAkitaki · Mar 27, 2015

I see, thank you all for your fast answers.

Pinhedd · Mar 28, 2015

Saberus :

Registered memory delays the command, clock, and address signals by one cycle. The data signals are not buffered on registered modules. They are buffered only on fully buffered and load-reduced modules.

Search

Mix ECC and non-ECC?

tsundereAkitaki

Reputable

Saberus

Calculagator

Admirable

COLGeek

Cybernaut

Saberus

Distinguished

tsundereAkitaki

Reputable

Pinhedd

Champion

TRENDING THREADS

Latest posts

Moderators online

Share this page