Re: RAN 1.35v vs 1.5v

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