Fuzz

Keep it at the top ready for tomorrows "at work clan" and we might find out.

Cheers

Andy

edit.... 'it's getting late and my typing's gone to $hit !

[Edited by Fuzz - 11/3/2003 10:57:07 PM]

Fuzz

I have just been informed that by adding a 512MB stick of Corsair 3200LL to my existing 1GB of Corsair TwinX 3200LL I will lose the Dual data rate functionality on my Asus A7N8X Del (rev 2.00).

I am not best chuffed !!


Discuss !

Andy

HHxx

No you wont loose the double data rate. You'll most likely just loose the dual channelling. Not that significant imo.

H

mr-white

you wont loose the double data rate of the memory you'll loose the dual memory function your mobo has. the first 2 sticks of mem should still run in dual the 3rd stick wont tho. do you understand ?

MW

Fuzz

Sorry my bad I meant the dual CHANNEL function !
IS this not a big thing to lose
I mean it'll be effectivly 200Mhz instead of 400Mhz
Or do I need to go back to School

Andy

Mr.Cookie

Andy

It'll still be 400mhz if your fsb is 200, you'll just possibly loose the ability for sticks 1 and 3 (iirc) to be accessed at the same time (which i suppose you could say would make it 800mhz ) by mr whites coments i'd assume you don't really see much difference with that because of other bottle necks.

Si

Fuzz

So the advantages of an extra 512MB out way the losing of the Dual functionality.


Opinions
below..

Andy

Fuzz

I was under the impression that the dual channel board was what gave it 400Mhz from the standard FSB of 200.

So i deduce from this that by adding another dimm I lose the TwinX cababilitys and am back to 200Mhz.

ARRGGH I need to learn more.. Any links ???

Mr.Cookie

no mate ddr is double data rate memory, if your fsb is 133 you'll need memory rated at 266 (pc2100 iirc) if it's 166 it'll need to be 333 (pc 2700 definate )

I think the in basic terms DDR is two stick of memory on one stick that can be accessed like it's two sticks

The Dual Channel is a feature of the motherboard with allows two memory slots to be accessed simulaneously.

All my opinion so could be bollox

Si

Fuzz

I can also see the errors in my first post too [img]images/smilies/mad.gif[/img]

This is directly cut and paste from an "expert"...

The timings will be set to the slowest memory, now if you have a dual ddr board, that is Intel then purchase two sticks of 256. If you have an AMD board then you will loose the Dual ddr support filling in the last dimm.

my mail for the above reply...

Back in August I purchased a twinx matched set of Corsair 1GB XMS 3200 LLPT (2 x 512MB) (Order No. XXXXXXXXXXXXXX)Opps
The timings on these are set at. 2-3-2-6-T1

I will be purchasing some further items shortly and decided to add another 512MB stick to the order,

However,
On looking at the single sticks available, the only ones I can find are quoted as :

Corsair 512MB DDR XMS3200LLPT Low Latency Platinum CAS2 (MY-014-CS)
Corsair XMS3200LL Low Latency uses exactly the same memory chips as Corsair XMS3500 with a special SPD - pre-set to aggressive memory timings of CAS2-2-2-5-1T - for those who'd rather not experiment with BIOS settings.


You will notice that the timings have now changed.

I am confused therefore, that I have the correct stick !

Could you please advise on this matter.


Andy


edit: to remove Order No

[Edited by Fuzz - 11/3/2003 11:05:00 PM]

ChrisB

Do you need the extra RAM? There's some benchmarks doing the rounds somewhere (can't stick my hands on them right now) showing how putting more RAM into a PC can slow it down by up to 33%.

Fuzz

Andy

DominicA

I think i'm right in saying that you will be able to install the extra ram and not lose the dual channel facility. The only issue will be slots used for the various DIMMS. Dual channel is based on banks of memory rather than slots. What you need is the smaller DIMMS in 1 bank and the larger in the other..

DominicA

see here

http://www.nforcershq.com/forum/viewtopic.php?t=3199

john_s

iTrader: (1)

I read an article online somewhere about the impact of putting additional memory modules into a system, was probably on Dr. Tome[/url] or Firingsquad. It basically said that the best performance comes from the lower number of memory modules.

I've a feeeling asymetric banks of dimms will stop the dual channel function working, as dual channel needs well matched memory (ie why corsair, kingston, etc sell some modules in pairs). The DDR will be unaffected as this means data is transfered twice per clock cycle (on the rising and falling edges of the clock pulse), so a 200MHz clock gives 400MHz data transfer.

HTH

John

DominicA

"I've a feeeling asymetric banks of dimms will stop the dual channel function working, as dual channel needs well matched memory (ie why corsair, kingston, etc sell some modules in pairs). "

this is not true (IT WORKS), the only reason that corsair and the like sell their memory in pairs is that it is highly stressed by the tight timings etc and their quality control is not good enough to be able to randomly select equally performing dimms....if you need proof of this then just check out the corsair support forums....