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On 1/29/21 10:00 AM, micky wrote:
> In alt.comp.os.windows-10, on Fri, 29 Jan 2021 04:35:05 -0500, Paul
> <[email protected]> wrote:
>
>> T wrote:
>>> On 1/27/21 4:06 PM, micky wrote:
>>>> In alt.comp.hardware, on Tue, 26 Jan 2021 16:03:52 -0800, T
>>>> <[email protected]> wrote:
>>>>
>>>>> On 1/26/21 1:56 PM, micky wrote:
>>>>>> I wanted to get more RAM for my newly-acquired PC
>>>>>>
>>>>>> Entering the make and model, HP EliteDesk 800 G1 Small Form Factor
>>>>>>
>>>>>> Crucial suggests only CT2K102464BD160B
>>>>>>
>>>>>> DDR3 PC3-12800 • CL=11 • Unbuffered • NON-ECC • DDR3-1600 • 1.35V •
>>>>>> 1024Meg x 64 • $76 even cheaper at NewEgg,
>>>>>>
>>>>>>
>>>>>> Kingston suggests only KCP316ND8/8
>>>>>>
>>>>>> Specs: DDR3, 1600MHz, Non-ECC, CL11, X8, 1.5V, Unbuffered, DIMM,
>>>>>> 240-pin, 2R, 4Gbit $98
>>>>>>
>>>>>>
>>>>>> The items are in different order but the main difference seems to me to
>>>>>> be 1.35v vs 1.5v.
>>>>>>
>>>>>> That seems important, right? How can they be different for the same
>>>>>> computer? (I'm not really concerned about price unless they could
>>>>>> sell
>>>>>> it cheaper by making it at the wrong, lower voltage. )
>>>>>>
>>>>>> Do I need to look up what the computer puts out? Would one of
>>>>>> these be
>>>>>> overclocked if the computer puts out 1.5v and the other underclocked if
>>>>>> the computer puts out 1.35?
>>>>>>
>>>>>> I already have 2 sticks, Do I want to get the same voltage that they
>>>>>> use, whatever that is?
>>>>>>
>>>>>>
>>>>>> ------
>>>>>>
>>>>>> Other differences are
>>>>>> Crucial says PC3-12800 but Kingston doesn't include that.
>>>>>>
>>>>>> Kingston says X8, 2R, 4Gbit but Crucial doesn't include any of
>>>>>> that.
>>>>>>
>>>>>> Does any of that matter?
>>>>>>
>>>>>>
>>>>>> ------
>>>>>>
>>>>>> FTR, I only looked at Newegg because Crucial was out of stock. NewEgg
>>>>>> says "Ships from China. Newegg Most customers receive within 10-32
>>>>>> days."
>>>>>>
>>>>>> Hmm. At
>>>>>> https://www.newegg.com/crucial-16gb-240-pin-ddr3-sdram/p/N82E16820156047
>>>>>>
>>>>>> it says sold and shipped by Ram-Store and when you click on 12 New from
>>>>>> $88.46 , it goes to the bottom of the page where they have 12 vendors
>>>>>> selling the same thing. Just like Amazon does it. I only looked at the
>>>>>> first 5 but one is in Hong Kong and "Most customers receive within 4-17
>>>>>> days.". One is in the US and "Most customers receive within 7-9 days",
>>>>>> all except Hong Kong for the same price!! (For Hong Kong and the next 7
>>>>>> the price gets higher.)
>>>>>>
>>>>>> But this doesn't matter until I understand the voltage question.
>>>>>>
>>>>>
>>>>> Hi Micky,
>>>>>
>>>>> Call Kingston tech support and describe the issue to them:
>>>>>
>>>>> 877-546-4786
>>>>> 714-435-2600
>>>>>
>>>>> Kingston's customer service is something to behold.
>>>>> Because of it. I only sell their memory, unless they
>>>>> don't carry what I need. They really, really back
>>>>> their stuff up.
>>>>>
>>>>> -T
>>>>
>>>> Thanks. I almost did this but then saw that I had Samsung in there now.
>>>> So unless someone tells me I shouldn't, matching the dimms that are
>>>> there now is the right thing to do?
>>>>
>>>> SAMSUNG M378B1G73DB0-CK0
>>>>
>>>
>>> My experience is that you should match them
>
> Good. That settles it.
>>
>> You know there are more nuances than that.
>
> Well, I thought it did.
>
>> If Dell sells a 6GB machine, you know right away
>> it shipped with a 4GB and a 2GB module, and it
>> left the factory in an unmatched state. The machines
>> are obviously flexible to some degree, as these non-power-of-two
>> machines are quite common at retail.
>>
>> I try not to send people on excessively constrained
>> missions, if I can help it. FLEX memory capability
>> has probably been around now for ten years, and lots
>> of machines can accept, say, 512MB,1GB,2GB,4GB
>> in the four slots and still work. Is it "optimal" ?
>> Of course not. But for the average user seeking
>> an easy upgrade with garbage in the desk drawer,
>> it'll work. And the Intel caching structure makes
>> any reduction in memory speed, almost invisible
>> to these choices. (older AMD, less so)
>>
>> It's better for the user, if they have a "retail"
>> motherboard in a home-built machine, as those have
>> extensive controls (even if I don't know what to
>> do with all the settings!). It's the Dell and HP
>> machines, you have to use your intuition as to
>> what aspects of memory choices will antagonize
>> the BIOS, or not.
>
> Nuances beyond my ken, but I can tell you didn't say no.
>
>> "Strict matching" is a good rule for say, S939.
>
> Aha, https://en.wikipedia.org/wiki/Socket_939
>
> Very interesting.
>
>
>>
>> Paul
>
Hi Micky,
All the machines I build come with way more memory than
the customer will ever use. I just get sticks with the
same part number from the bin next to each other and
have never had a problem. I don't bother buying
"matched" sets.
I have had memory upgrades where I told the the customer
that is was not worth the problems to try to get mismatches
to work. They have always just let me remove the old
ones and install new ones. Memory prices have really
come down.
My main office machine is Fedora 33 running 16 GB of
ECC memory. I have 11 virtual machines. I get away
with running two at a time with not issues. I have
had five running before and it starts to slow a bit,
but I don't run out of memory.
-T