OCUK Memory FAQ

3xtemelyk3wl · 12 May 2003 at 13:25

Sure, what do you want to know

Darkman · 12 May 2003 at 20:20

3xtemelyk3wl,

Thanks for putting in the time and effort.

Mucho appreciated!

DM

The Halk · 20 May 2003 at 20:14

Q. My OCZ PC 3200 / Corsair XMS 3200 / Twinmos 3200 is not working well with my nforce board in dual channel mode.

A: No, this is a known issue and it is very difficult to optimise SPD timings for both single and dual channel operation. Use Corsair Twin X or OCZ Dual-channel optimised matching pair kits.

Will buying 2 Twinmos at the same time give the same result as buying a matched pair?

3xtemelyk3wl · 2 Jun 2003 at 19:56

No, although if you specify you need a matched pair OCUK might be able to help you out. Twinmos have about 3 different PCB revisions and 5 different wafers within their "PC3200" alone.

The Halk · 2 Jun 2003 at 20:28

Yep, that I understand, but what I meant was would 2 modules from the same production run be as good as a matched set? It's not a concern for me any more since I've got them (and they work just fine) but it's somethng I think others might ask.

Hamish · 4 Jun 2003 at 00:20

great post but mistake at the very beginning -

SDR stands for single data rate

SDRAM = Syncronous Dynamic Random Access Memory

magickangaroo · 4 Jun 2003 at 17:02

Uhh

i thought SDR = Single Data Rate
as in DDr = double DAta Rate

and SDRAM = Super Dynamic Random Access Memory

So no mistake at the bigining

hence both SDR and DDR are both SDRAM

but is RDRAM SDRAM??

i dont thinks so as they fundementally diffrent methods of memory

3xtemelyk3wl · 5 Jun 2003 at 18:49

Originally posted by H!GH_VOLTAGE
great post but mistake at the very beginning -

SDRAM = Syncronous Dynamic Random Access Memory

Nope, SDR = Single Data Rate.

SDR SDRAM = Single Data Rate Syncronous Dynamic Random Access Memory

3xtemelyk3wl · 5 Jun 2003 at 18:50

Originally posted by Halk
Yep, that I understand, but what I meant was would 2 modules from the same production run be as good as a matched set? It's not a concern for me any more since I've got them (and they work just fine) but it's somethng I think others might ask.

Sometimes, I know that dual modules from some brands have optimised internal timings for 128bit operation.

Hamish · 7 Jun 2003 at 21:30

no cause if it was

single data rate then SDRAM would be called SDRRAM

also DDR RAM's proper name is DDR SDRAM, so how can it be double data rate, single data rate RAM?

i recon people just assumed it was single, cause its logical, but its wrong...

also why, when when SDRAM came out would they call it Single data rate? single compared to what? DDR is double SD RAM speed

Hamish · 7 Jun 2003 at 21:31

hehe, found proof to support my claim

http://www.webopedia.com/TERM/S/SDRAM.html

SDRAM Last modified: Wednesday, February 05, 2003

Short for Synchronous DRAM, a type of DRAM that can run at much higher clock speeds than conventional memory. SDRAM actually synchronizes itself with the CPU's bus and is capable of running at 133 MHz, about three times faster than conventional FPM RAM, and about twice as fast EDO DRAM and BEDO DRAM. SDRAM is replacing EDO DRAM in many newer computers.

Hamish · 7 Jun 2003 at 21:33

and...

DRAM Last modified: Thursday, November 21, 2002

Pronounced dee-ram, DRAM stands for dynamic random access memory, a type of memory used in most personal computers.

3xtemelyk3wl · 8 Jun 2003 at 17:14

What’s your point?

SDR SDRAM = Single Data Rate Synchronous dynamic random access memory.

DDR SDRAM = Double Data Rate Synchronous dynamic random access memory.

Your whole argument started when you said:

great post but mistake at the very beginning -

quote:
--------------------------------------------------------------------------------
SDR stands for single data rate"

SDRAM = Synchronous Dynamic Random Access Memory

I never stated that SDRAM didn’t mean Synchronous Dynamic Random Access Memory, but SDR and SDRAM are two totally unrelated acronyms.

1nteger · 27 Jun 2003 at 21:41

Hi...I'm new here...

....so what does SDDDRRRDDDSSSRRRRRRRRRRRAM stand for?

(and don't argue over it!!)

Cool FAQ by the way - I'm actually printing a copy for future reference.

wingphil · 3 Jul 2003 at 16:01

Originally posted by 3xtemelyk3wl
Q. Isn't DDR SDRAM a contradiction?

No, SDRAM (Synchronous Dynamic Random Access Memory) should not be confused with SDR (single data rate). Both SDR and DDR are SDRAM.

which you stated at the end of your original post. some people eh?

joedeath332 · 10 Jul 2003 at 00:23

great post,,now i can start overclocking my 1 x DDR 512 PC2700 memory..

does overclocking your memory make it overheat (the same as your cpu),,and if so how do you know when the temps are getting dangerous(as in bang....bye bye ram)
:eek:

cheers for the A1 thread

Pompey · 12 Jul 2003 at 18:14

I would like to get 1Gig of RAM, however, I would prefer to buy in two stages so initially getting 512Mb. Would it be better to get two individual pieces or one twin set?

As an example:
Corsair 1GB DDR XMS3200 TwinX (2x512MB) Â£247.34
Corsair 512MB DDR XMS3200LL Â£126.90 (Â£253.80).

So ignoring money, once both have 1Gig is one set better than the other?

And whilst I have your attention, what makes the Low Latency version so much better than the regular version? [over Â£40 difference] Is it only worthwhile for hardcore gamers?
p.s. Great FAQ btw.

Drunen · 6 Aug 2003 at 22:30

a few questions on this excellent post

1) is CMD an AMD specific setting?

2) what is DRAM idle timer on asus intel boards? better as lower or higher value?

3) what is DRAM refresh rate on asus intel boards? better as lower or higher value?

great sticky

3xtemelyk3wl · 16 Aug 2003 at 14:52

Originally posted by Drunen
a few questions on this excellent post

1) is CMD an AMD specific setting?

2) what is DRAM idle timer on asus intel boards? better as lower or higher value?

3) what is DRAM refresh rate on asus intel boards? better as lower or higher value?

great sticky

1) Nope, but not all boards will let you change this value.
2) Lower will give better performance
3) Higher is better. Note that both of these settings have almost no impact on performance, so leave them at default would be the best advice.

3xtemelyk3wl · 16 Aug 2003 at 14:54

Originally posted by Pompey
I would like to get 1Gig of RAM, however, I would prefer to buy in two stages so initially getting 512Mb. Would it be better to get two individual pieces or one twin set?

As an example:
Corsair 1GB DDR XMS3200 TwinX (2x512MB) Â£247.34
Corsair 512MB DDR XMS3200LL Â£126.90 (Â£253.80).

So ignoring money, once both have 1Gig is one set better than the other?

And whilst I have your attention, what makes the Low Latency version so much better than the regular version? [over Â£40 difference] Is it only worthwhile for hardcore gamers?
p.s. Great FAQ btw.

Glad you liked it. The LL version uses better quality winbond wafter than the non LL version. It also has a much more agressive default SPD file (which can cause problems) If you are using a canterwood board, a matched pair of memory would be a very good idea. If using anything else, the extra money is a waste.

OCUK Memory FAQ

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