nMP can it take non -ecc ram

mrsavage1

macrumors regular
Original poster
Feb 1, 2010
215
0
Is it possible to replace all the ram in the nmp with non ecc ram? And can the non ecc mix with ecc ram?
 
Last edited:

jav6454

macrumors P6
Nov 14, 2007
16,876
1,532
1 Geostationary Tower Plaza
Can you mix ECC and non-ECC, yes, but its highly discouraged. Can you have non-ECC entirely? Yes, it's like putting 87 octane into an engine that takes 93 octane. It'll run, but not to full performance (in this case the error correcting code feature won't work)
 

666sheep

macrumors 68040
Dec 7, 2009
3,626
229
Poland
Can you have non-ECC entirely? Yes, it's like putting 87 octane into an engine that takes 93 octane. It'll run, but not to full performance (in this case the error correcting code feature won't work)
Actually non-ECC it's about 2% faster at the same clock. Here is a nice article that covers pros and cons.
 

[G5]Hydra

macrumors regular
Jul 2, 2004
151
0
Actually non-ECC it's about 2% faster at the same clock. Here is a nice article that covers pros and cons.
Pretty much. Nothing is ever free. You want error correction you pay a little in ultimate performance. A couple % won't be possible to tell the difference in day to day use so its probably not worth worrying about. If you are doing weeks long calculations that can all be wasted if a bit is flipped you can bet it's worth way more than the little performance hit.
 

calaverasgrande

macrumors 65816
Oct 18, 2010
1,291
161
Brooklyn, New York.
I expect 1866 ram prices will drop after the initial "goldrush".
It is always like this when the next higher speed tier solidifies.
I recall similar issues when DDR400 replaced DDR333 on mainstream PCs. Couldnt even find DDR400 sticks in any size but 512mb for a bit.
Likewise there were some shortages when DR1066 was coming up as well.
 

skywiseca

macrumors newbie
Oct 3, 2012
10
0
Will the nMP actually take non-ecc though?
Alot of ECC machines don't like nonECC RAM.
Anyone tried it yet?
 
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