are these two modules interchangeable?

[JD Austin]

It is better to have the same speed ram, but typically you can get
different speed ram to work without crashing/etc by placing the slower one
in the first slot (eg marked as slot 0). Also you can often set the ram
speed in the bios to the slower speed to avoid issues.  Faster ram will
work at lower speeds but not the other way around. Ram is cheap though so
often it's better to just by the fastest and biggest ram you can afford.
JD

On Thu, Sep 15, 2022 at 11:17 AM Michael Butash via PLUG-discuss <
plug-discuss at lists.phxlinux.org> wrote:

> It will usually figure out some level of compatibility that it *will*
> work, until you start getting weird segfaults or crashes for no apparent
> reason.  My new used laptop came with mismatched 2x2 16gb sticks and
> *worked*, but not something I want to test with 128gb of ram going into it
> when I tend to actually use it.
>
> I've dealt with it a few times in my life that it's worth some expense to
> avoid all that with matched sticks.
>
> -mb
>
>
>
> On Thu, Sep 15, 2022 at 11:08 AM Stephen Partington via PLUG-discuss <
> plug-discuss at lists.phxlinux.org> wrote:
>
>> Some laptops and NUC's are single channel or will default to that if they
>> cannot match for dual channel compatibility.
>>
>> On Thu, Sep 15, 2022 at 2:07 PM Michael via PLUG-discuss <
>> plug-discuss at lists.phxlinux.org> wrote:
>>
>>> interesting. well, I must be one-lucky-dog then! I mis-matched an 8GB
>>> and a 4GB with no ill effects.
>>>
>>> On Wed, Sep 14, 2022 at 6:01 PM Michael Butash via PLUG-discuss <
>>> plug-discuss at lists.phxlinux.org> wrote:
>>>
>>>> I would highly recommend NOT mixing and matching sticks of ram, this
>>>> has never ended well for me, particularly since most everything is
>>>> dual-channel configs these days and really need to be paired exactly per
>>>> bank.  If you do/must, match them up as close as possible in terms of
>>>> speed, cas/ras latency, etc, or only use the exact same ram down to the
>>>> model number.
>>>>
>>>> I've long ago stopped mixing and matching sticks of ram for weird pc
>>>> crashes, I always put them in as a set now.  Matched sets by batch are
>>>> best, or if needing a bunch of sticks for a server, buying a batch of same
>>>> sticks used of ebay out of the same server has been good to me too, just
>>>> make sure to run a memtest on them first to make sure they're good if
>>>> used.
>>>>
>>>> Likewise test if using off brand random sticks, they're probably cheap
>>>> for a reason ie. 2nd rate parts.  These days I only use samsung memory.
>>>>
>>>> -mb
>>>>
>>>>
>>>>
>>>> On Wed, Sep 14, 2022 at 2:34 PM Michael via PLUG-discuss <
>>>> plug-discuss at lists.phxlinux.org> wrote:
>>>>
>>>>> Thanks for the tip!
>>>>>
>>>>> On Wed, Sep 14, 2022 at 4:34 PM Stephen Partington <
>>>>> cryptworks at gmail.com> wrote:
>>>>>
>>>>>> if your motherboard/bios is well designed yes, they will run at the
>>>>>> slower speed. you can even encourage this compatibility by installing the
>>>>>> slower module in the first memory channel.
>>>>>>
>>>>>> On Wed, Sep 14, 2022 at 4:32 PM Michael <bmike1 at gmail.com> wrote:
>>>>>>
>>>>>>> Thanks! Does that mean both will be the slower speed?
>>>>>>>
>>>>>>> On Wed, Sep 14, 2022 at 3:31 PM Stephen Partington <
>>>>>>> cryptworks at gmail.com> wrote:
>>>>>>>
>>>>>>>> technically yes. but one is faster than the other.
>>>>>>>>
>>>>>>>> On Wed, Sep 14, 2022 at 1:57 PM Michael via PLUG-discuss <
>>>>>>>> plug-discuss at lists.phxlinux.org> wrote:
>>>>>>>>
>>>>>>>>> https://www.ebay.com/itm/324592214962
>>>>>>>>>
>>>>>>>>> https://www.ebay.com/itm/324588786229?mkevt=1&mkpid=0&emsid=e11050.m43.l1123&mkcid=26&ch=osgood&euid=928c7022651c489a853c83def083a70e&bu=44153278520&osub=-1%7E1&crd=20220913222229&segname=11050
>>>>>>>>> If they are, how is the more expensive one better?
>>>>>>>>> --
>>>>>>>>> :-)~MIKE~(-:
>>>>>>>>>
>>>>>>>> ---------------------------------------------------
>>>>>>>>> PLUG-discuss mailing list: PLUG-discuss at lists.phxlinux.org
>>>>>>>>> To subscribe, unsubscribe, or to change your mail settings:
>>>>>>>>> https://lists.phxlinux.org/mailman/listinfo/plug-discuss
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> A mouse trap, placed on top of your alarm clock, will prevent you
>>>>>>>> from rolling over and going back to sleep after you hit the snooze button.
>>>>>>>>
>>>>>>>> Stephen
>>>>>>>>
>>>>>>>> --
>>>>>>> :-)~MIKE~(-:
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> A mouse trap, placed on top of your alarm clock, will prevent you
>>>>>> from rolling over and going back to sleep after you hit the snooze button.
>>>>>>
>>>>>> Stephen
>>>>>>
>>>>>>
>>>>>
>>>>> --
>>>>> :-)~MIKE~(-:
>>>>> ---------------------------------------------------
>>>>> PLUG-discuss mailing list: PLUG-discuss at lists.phxlinux.org
>>>>> To subscribe, unsubscribe, or to change your mail settings:
>>>>> https://lists.phxlinux.org/mailman/listinfo/plug-discuss
>>>>
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>>>
>>>
>>>
>>> --
>>> :-)~MIKE~(-:
>>> ---------------------------------------------------
>>> PLUG-discuss mailing list: PLUG-discuss at lists.phxlinux.org
>>> To subscribe, unsubscribe, or to change your mail settings:
>>> https://lists.phxlinux.org/mailman/listinfo/plug-discuss
>>
>>
>>
>> --
>> A mouse trap, placed on top of your alarm clock, will prevent you from
>> rolling over and going back to sleep after you hit the snooze button.
>>
>> Stephen
>>
>> ---------------------------------------------------
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>
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