Upgrading Memory

[spflanze]

I have a PC with an Intel D875PBZLK main board. Currently there is 2GB of RAM installed in it. I want to upgrade this to the board's maximum capacity of 4GB. When I change the memory modules will the system automatically become aware of increased memory capacity? Or will there need to be changes to configurations on the main board or in BIOS?

 

[Charlie Hoffpauir]

I have a PC with an Intel D875PBZLK main board. Currently there is 2GB of RAM installed in it. I want to upgrade this to the board's maximum capacity of 4GB. When I change the memory modules will the system automatically become aware of increased memory capacity? Or will there need to be changes to configurations on the main board or in BIOS?

WWW.crucial.com and use the system scanner tool.

 

[Paul]

I have a PC with an Intel D875PBZLK main board.
Currently there is 2GB of RAM installed in it.
I want to upgrade this to the board's maximum capacity of 4GB.

When I change the memory modules will the system automatically
become aware of increased memory capacity?

Yes.

And when you install 4GB, Windows will report a smaller amount as
being "free". That could be around 3.1GB perhaps. It varies a bit.

Or will there need to be changes to configurations on the main board or in BIOS?

With 875P, you shouldn't need to change the timing.
You can keep the same memory clock with four sticks.
You may need to adjust tRAS by one.

So say you were running low latency DDR400 2-2-2-6. If you
ran four sticks, you could keep the DDR400 setting, and then
try 2-3-2-6. Use memtest86+ from memtest.org , to do an
initial memory test, to prove your settings are working.
Do not boot Windows until memtest86+ says the memory is clean !

And around 2.7V for Vddr should be reasonably safe.
(2.5V is industry standard for DDR333.
2.6V is industry standard for DDR400.
A small tolerance is allowed on top of that for
regulator precision. Either 2.65 or 2.7V should not hurt anything.
Some motherboards have settings like 2.65, 2.75 as choices, and
you could try 2.65V, while others might offer 2.6V, 2.7V and you
could use 2.7V.)

http://en.wikipedia.org/wiki/DDR_SDRAM

"DDR 100–200 100–200 2n 200–400 2.5/2.6 184 200 172"

See also the line in a table there for "DDR-400B",
which has a JEDEC voltage spec 2.6±0.1 .

HTH,
Paul

 

[John Doe]

I have a PC with an Intel D875PBZLK main board. Currently there
is 2GB of RAM installed in it. I want to upgrade this to the
board's maximum capacity of 4GB. When I change the memory
modules will the system automatically become aware of increased
memory capacity? Or will there need to be changes to
configurations on the main board or in BIOS?

Detection of memory size is automatic.

 

[Flasherly]

I have a PC with an Intel D875PBZLK main board. Currently there is 2GB ofRAM installed in it. I want to upgrade this to the board's maximum capacity of 4GB. When I change the memory modules will the system automatically become aware of increased memory capacity? Or will there need to be changes to configurations on the main board or in BIOS?

No. Whichever memory you buy that is faster will become as slow as
your slowest memory. You're MotherBoard won't be friends with your
latest two best friend MainBoards, but will favor a slower friend to
ensure the faster may run beside, on the same course.

Yes. There is a lot you can do with the BIOS and memory timings, but a
lot more means a perfectly matched pair of memory modules. Depending
on The MB, the MB(oards) are at times a good idea to buy locally, so
to ensure a valid and working match in the event merchandise is
returned;- good to keep in mind, although not the usual or to be an
expected issue.

The bottom line, however, to bear in mind with MM, mem mods is memory
seldom will equate to more than 5-10% overall system improvement, with
the CPU being the primary factor to a sense of performance, as
followed by a graphical representation fast/persistent enough, when in
need, to visualize that.

 

[Loren Pechtel]

I have a PC with an Intel D875PBZLK main board. Currently there is 2GB of RAM installed in it. I want to upgrade this to the board's maximum capacity of 4GB. When I change the memory modules will the system automatically become aware of increased memory capacity? Or will there need to be changes to configurations on the main board or in BIOS?

It's been a long time since you needed to do anything but simply put
the new memory in.

 

[Yousuf Khan]

I have a PC with an Intel D875PBZLK main board. Currently there is 2GB of RAM installed in it. I want to upgrade this to the board's maximum capacity of 4GB. When I change the memory modules will the system automatically become aware of increased memory capacity? Or will there need to be changes to configurations on the main board or in BIOS?

Although a new memory module will work, it may or may not work optimally
though. As others have noted, a newer memory module might be faster than
an older module, but when the two of them are put into the same system,
they will be operate at the slower common speed. Also another thing not
often noted is that if you want to have dual-channel memory, where both
memory modules operate in concert with each other, rather than as two
separate entities (thus making the two even faster), you really need to
buy the two memory modules of the same brand, at the same time. Modules
bought at separate times and/or of different brands might work in
dual-channel mode with each other, but it's only at best a 50:50 shot.

You're best off to buy two memory modules at the same time, and sell off
the old module later.

Yousuf Khan