In alt.comp.os.windows-10, on Fri, 29 Jan 2021 04:35:05 -0500, Paul
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
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-...82E16820156047

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