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Do you feel sinful overclocking an ECC RAM ?

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BravoV:
Just bought bunch of DDR4 ECC for SWMBO and also refresh my current desktop, both on Ryzens.


The evil side  >:D in me says ...

C'mon, its Samsung B-Die anyway ! Even they're not cherry picked, your 1st try without even any efforts, without any bump on the voltage at BIOS, its already reaching 2933Mhz (2400Mhz rated), passed Memtest86+ for few iterations. C'mon ... squeeze more !!! Once it passed the memory test for overnight or at least 24 hours, that already exceeded your normal average usage time.


While the angel inside says ...

ECC is made from the 1st place is for a reason, and overclocking the RAM defies it's purpose, just DO NOT do it.


What to do ? What to do ?  :-//


... just pointless rant ...  :palm:


PS :
Btw, just fyi, the freeware bootable Memtest86+ thru USB/CD, just recently updated to version 5.31b after a long hiatus years ago -> https://www.memtest.org/

wraper:

--- Quote from: BravoV on May 15, 2020, 04:27:41 pm ---ECC is made from the 1st place is for a reason, and overclocking the RAM defies it's purpose, just DO NOT do it.

--- End quote ---
Actually overclock and ECC go together very well. If there is little instability, ECC will fix that and you will be able to check if ECC ever intervened.
Overclocking without ECC is a crapshoot, you never know if system is actually stable and if any bit flips ever happened.

chriva:
ECC memories are awesome to overclock!  >:D
They're are not perfect tho. Push them hard enough or be unlucky and they'll still not detect and fix errors. There's only so much they can detect with one extra bit :)


Stay away from the buffered ones tho. You're just putting another link in the chain instead of making it stronger.

wraper:

--- Quote from: MK14 on May 15, 2020, 06:01:22 pm ---Analogy:
Crisps are 30 pence, for a normal packet.
You are paying 40 pence, for the special, reduced salt version, for health reasons.
Then adding salt to it, to make it taste nicer.

--- End quote ---
Pretty crappy (non) analogy. It's like buying a car (RAM) + insurance (ECC). Thinking that insurance becomes redundant if you like to drive fast is quite ridiculous IMHO.

wraper:

--- Quote from: MK14 on May 15, 2020, 06:15:11 pm ---Will ECC, stop an overclocked cpu, from being less stable, but more crashing, and more likely to have (potentially silent) data corruption ?

--- End quote ---
Hold on. How RAM ECC has anything to do with overclocked CPU stability?  :palm:

--- Quote ---Will the car insurance, stop you getting accidents/injured/killed/arrested/imprisoned if you drive like an idiot ?
--- End quote ---
What insurance will do is buy you a new car (correct the data) if you crash. ECC log will show that you run RAM a bit too fast without any BSOD happening or silent data corruption. Without ECC you can only guess what's actually happening. Running memory tests for 24h does not mean that computer is stable. It just means it is not unstable enough to show the issue while testing. My experience with ECC shows that bit flips may happen once in a week or even month with overclocked RAM.

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