Question about SDR memory vs DDR memory

  • Thread starter Thread starter Andy in NJ
  • Start date Start date
A

Andy in NJ

I currently have 1 gig of SDR PC133 memory. Will I experience a significant
speed increase if I go to 1 gig of DDR 433 memory? How would I know if my
motherboard can support it?

I know very little about memory, so please excuse what may be an obvious
question to everyone out there.
 
"Andy in NJ" <SHORECOGS said:
I currently have 1 gig of SDR PC133 memory. Will I experience a significant
speed increase if I go to 1 gig of DDR 433 memory? How would I know if my
motherboard can support it?

I know very little about memory, so please excuse what may be an obvious
question to everyone out there.
Click to expand...


If you are running sdram chips you cannot put DDR ram into that
motherboard.

They require different sockets.
 
I currently have 1 gig of SDR PC133 memory. Will I experience a significant
speed increase if I go to 1 gig of DDR 433 memory? How would I know if my
motherboard can support it?

I know very little about memory, so please excuse what may be an obvious
question to everyone out there.
Click to expand...

SDR and DDR are incompatible. You'll need a new motherboard and
processor if you want to use DDR.
 
I currently have 1 gig of SDR PC133 memory. Will I experience a significant
speed increase if I go to 1 gig of DDR 433 memory? How would I know if my
motherboard can support it?

I know very little about memory, so please excuse what may be an obvious
question to everyone out there.
Click to expand...

There are some very common motherboards that can use either PC133
or DDR memory, because they have both types of slots on the
board. Both types cannot be used at the same time though, it's
one or the other. You make no mention of the specific
motherboard make/model so we cannot know if this is the
situation. Consult your motherboard manual for memory type
supported.

IF your motherboard supports DDR memory (PC1600, PC2100, etc)
then you should be able to use DDR433, most often called PC3500.
 
yak said:
If you are running sdram chips you cannot put DDR ram into that
motherboard.

They require different sockets.
Click to expand...

My motherboard has 2 sockets for SDR and 2 sockets for DDR.
 
General Schvantzkoph said:
SDR and DDR are incompatible. You'll need a new motherboard and
processor if you want to use DDR.
Click to expand...

You're the second person to tell me this. Do you guys REALLY think I'd ask
this if my motherboard didn't support DDR? I have 2 slots for SDR and 2
slots for DDR.
 
"Andy in NJ" <SHORECOGS said:
My motherboard has 2 sockets for SDR and 2 sockets for DDR.
Click to expand...


Then go to crucial.com like a good boy and use the memory finder for
your motherboard.

433 will just be wasted on an old mb. You probably will see some
improvement doing to double data rate, at whatever speed.
 
yak said:
Then go to crucial.com like a good boy and use the memory finder for
your motherboard.

433 will just be wasted on an old mb. You probably will see some
improvement doing to double data rate, at whatever speed.
Click to expand...

After my last reply, I located my motherboard's manual. I supports the
PC2100 DDR, so I bought 2 gigs of the 233mhz stuff, the max my motherboard
can use.
 
You're the second person to tell me this. Do you guys REALLY think I'd ask
this if my motherboard didn't support DDR? I have 2 slots for SDR and 2
slots for DDR.
Click to expand...

You said...
I currently have 1 gig of SDR PC133 memory. Will I experience a significant
speed increase if I go to 1 gig of DDR 433 memory? How would I know if my
motherboard can support it?
Click to expand...

When you use 'it' instead of the correct noun, you'll get ambiguous
replies. We thought you were asking if yer mb supported DDR memory.

Use nouns whenever you can...instead of pronouns...especially in
technical questions.


Have a nice week...

Trent©

What do you call a smart blonde?
A golden retriever.
 
Trent© said:
You said...


When you use 'it' instead of the correct noun, you'll get ambiguous
replies. We thought you were asking if yer mb supported DDR memory.

Use nouns whenever you can...instead of pronouns...especially in
technical questions.
Click to expand...

The way I read it, I think it's obvious that my motherboard has DDR slots.
Why else would I ask about a speed increase SDR vs DDR? Based on the fact
that my motherboard has DDR slots, it's apparent that I was asking how I
would find out if my motherboard supported the 433 memory. Since I posted
this message, I found my motherboard's manual, found that it can support up
to 2 gig of the DDR 266 and I've purchased 2 gig of DDR 266... Thank you for
the replies, though.
 
The way I read it,
Click to expand...

"The way I read MY ORIGINAL POST (it)..."
I think it's obvious that my motherboard has DDR slots.
Click to expand...

Where did your OP (original post) say that you had DDR slots. And
later in the post you say...
Why else would I ask about a speed increase SDR vs DDR?
Click to expand...

Because you know very little about memory?...and didn't know that the
two are not interchangeable? At any rate, that's what some of us
assumed.
Based on the fact
that my motherboard has DDR slots,
Click to expand...

So you told us...later.
it's apparent that I was asking how I
would find out if my motherboard supported the 433 memory.
Click to expand...

Its now MORE apparent...but it wasn't clearly apparent with your first
post.
Since I posted
this message, I found my motherboard's manual, found that it can support up
to 2 gig of the DDR 266 and I've purchased 2 gig of DDR 266... Thank you for
the replies, though.
Click to expand...

In the future, you can often find a manual quicker on the Internet
than going thru all the drawers in the house! lol Most times, that's
what I do...just browse the manufacturers site. The Internet is a
great thing...sometimes!

Anyway...good luck.


Have a nice week...

Trent©

What do you call a smart blonde?
A golden retriever.
 
Trent© said:
Because you know very little about memory?...and didn't know that the
two are not interchangeable? At any rate, that's what some of us
assumed.
Click to expand...

Tsk tsk. There's that "A" word... ya know what that makes U and Me, right?
:)
 
That's funny, that's contrary to all the other replies I've gotten and
everything I've read on the internet.
Click to expand...

If I read your previous post correctly, you previously had memory
at 100MHz, which on an integrated video motherboard, will
significantly slow down not only the video but all tasks, because
too little bandwidth is remaining. In a different situation,
like moving from 133MHz PC133 to DDR266 PC2100 memory, on a board
with separate video card, the gain would only be around 3-10%
except in the most memory-constrained tasks, but for your
particular board you may see a larger gain, well over 10%. Even
so it'll be noticably slower than a modern board like nForce2
with separate video card and FSB/Mem raised to their full
potential.

I wouldn't buy 1GB of DDR2100 for that system. It'd be better to
buy a newer chipset motherboard, video card, CPU, etc
(progressively rebuild whole thing, but in that case it might be
better to just start from scratch, keep that system whole).
 
.... in the real life performance (not theoretical bandwith benches!)
(you asked for real life speed increase, didn´t you?)
That's funny, that's contrary to all the other replies I've gotten and
everything I've read on the internet.
Click to expand...
:-) thats because people fall on the marketing mumble-jumble ....
(get hypnotized by that)

& you´ve not read old reviews about MoBos like yours (double ram type
slots ones).

You can replace the ram (since I see you´ already bought it) & work
with your machine to see if there is any practical speed boost-up :-)

or get WinRAR3.30 from http://www.rarlab.com/ , there is incorporated
mem & his subsystem real life perforamance test & do it with both type
of ram you have ...

- my sdram sistem benches (135Fsb) 315 points ... for example ..
 
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