Jump to content
Corsair Community

Corsair XMS2 PC2 6400 DDR 2x1GB & P5N32-E SLI Plus - Dual channel & timings problems?


1nsomniac

Recommended Posts

hi,

 

recently ive built myself a new system including the above twinpack memory and motherboard also a quad core 2.4ghz, zotac 512mb 8800gt amp edition, coolermaster igreen 600w psu & coolermaster cosmos rc-1000 case.

 

its all built and working fine and stable on Vista 32bit but i noticed that my memory was holding my system back as it was showing a vista score of only 5.0 and after checking reviews for this memory on ebuyer there was a few notes saying that if it runs in single channel mode it will show a score of 5.0 instead of if its running in dual channel it would show a score of 5.9. after i noticed this i checked in my bios (version 0805) and it will not allow me to use SLI/dual channel memory as it says it is not detected even though they are installed into slots 1 & 3 also the timings are set to automatic and if i change them to the advised timings 4-4-4-12-2T my system will not boot into windows as it either shows the post screen all over the place and freezes it or BSOD as it loads into windows.

 

now i am able to overclock processors and gpu's with no probs and have a fair amount of technical ability but have never really botherd in the past with anything about memory timings and voltages so dont really know what im doin when it comes down to this sort of stuff but could anyone help me and bare this in mind??

 

is this memory and my motherboard compatible for dual/SLI channel (i thought i had done my research and was sure this would be the best memory for this motherboard) or is my memory faulty? and why does it not work at all at the recommended settings?

 

thanks in advance for your help as i need to know wether to return them back to ebuyer

Link to comment
Share on other sites

Are you sure its not running in Dual Channel mode? Try everest once, when it opens at first click motherboard then click Chipset. Now near top is mem controler and it should say Type Dual 128bit and should say Active: Dual 128bit

 

If not then something is wrong.

 

Under mem timings it lists 20 of the timings you have the mem set to currently. This can be handy info to see if the bios is misreading the spd and setting wrong timings on auto.

 

Get everest here

http://www.download.com/Everest-Ultimate-Edition-2006/3000-2086-10499291.html

Link to comment
Share on other sites

i have attached a screenshot of everest showing that as you said it does say dual and then it shows my timings. i may be getting my wires crossed but i bought this memory as i was advised it was SLI ready memory with EPP and in my bios it shows this as not correct as it says no SLI memory could be found. also it shows my memory timings as 5-5-5-18 and if i change it manually to the recommended settings of 4-4-4-12 my system fails to boot.

 

thanks for your response by the way

 

after a few days of looking through forums and other websites all the comments of people using this memory on this motherboard all seem to be using pretty much the same settings which are :-

 

memory voltage - 2.1

tcl - 4

trcd - 4

trp - 4

tras - 12

cmd - 2

 

some also use:-

 

trc - 22

twtr - 15

 

when trying to use the above settings they never boot into windows and always BSOD

Memory.jpg.6e2fdd9d6c8ee6b2b589c6ada1d06521.jpg

Link to comment
Share on other sites

may be getting my wires crossed but i bought this memory as i was advised it was SLI ready memory with EPP and in my bios it shows this as not correct as it says no SLI memory could be found. also it shows my memory timings as 5-5-5-18 and if i change it manually to the recommended settings of 4-4-4-12 my system fails to boot.

 

Can you list ALL of the information from the stickers on the memory modules and, list all the bios settings you have made for memory, CPU, and voltages.

Link to comment
Share on other sites

yea no probs, the info on the stickers are:

 

Memory Slot Channel 1 -

 

CM2X1024-6400C4 4-4-4-12

2.10V VER 6.2 800MHZ

2801711 07490546 1024MB

XMS2-6400

 

Memory Slot Channel 3 -

 

CM2X1024-6400C4 4-4-4-12

2.10V VER 6.2 800MHZ

2801712 07490546 1024MB

XMS2-6400

 

 

 

all my CPU, GPU & Voltages are all stock/auto. hope this helps and good luck to all those nursing hangovers today :-s

Link to comment
Share on other sites

Im sure someone from corsair will reply soon in the time being Im curious. What does everest say when you click spd. That is timings the ram is programed with. See if there is any diff between the spd reported timings (what should be set) and the chipset timings (what is current timing). Thats what I did, mine was off and it did make a diff. maybe it will help you too.
Link to comment
Share on other sites

Well the spd is telling us something diff then the sticker. It says its 5-5-5-18 at 400mhz (ddr2 800) and is 4-4-4-13 at 270mhz. If it were me, Id trust the spd programing over the sticker.

 

also spd says other timings are

RC-RFC-RRD-WR-WTR-RTP

22-42---3----6----3----3

 

While chipset is reporting

RC-RFC-RRD-WR-WTR-RTP

22-42---3----5----9----3

Link to comment
Share on other sites

That is correct and if they are XM2S-6400C4DHX the tested setting would need to be set manually to Cas 4-4-4-12 at 2.1 Volts 2t CR/CPC at the TRC set to 24 should be all you have to do.

 

I guess that means it's going back to ebuyer then as those are the timmings ive been trying and it hasnt once managed to fully boot with them! i've even updated my bios again to the new version 0901 which seems to have made my system even more stable and quicker which got my hopes up, but after giving it one more final try it again BSOD before it could boot into windows.

 

before i bought this memory i was under the impression my motherboard was only capable of up to 800mhz mem speeds but i've noticed that alot of people seem to be using 1066mhz, as im going to replace them what do you think would be the best memory for my motherboard??

 

 

thanks for ur help anyway

Link to comment
Share on other sites

that is the one i've been looking at anyway (although the 2x1GB version due to all the bad stories ive been reading about the problems with 4GB and this motherboard) and its only an extra £10 so i might aswell. that is aslong as that will work correctly with my motherboard

 

** actually after a second look thats not the memory i was looking at i was looking at the DHX version

Link to comment
Share on other sites

  • Corsair Employees
Can you tell me the make and model of MB you have along with the CPU speed and it’s FSB as well? In addition, please tell me the bios settings you have set for both CPU and memory and any performance settings that you may have set?
Link to comment
Share on other sites

Can you tell me the make and model of MB you have along with the CPU speed and it’s FSB as well? In addition, please tell me the bios settings you have set for both CPU and memory and any performance settings that you may have set?

 

?? nothing has changed from the above posts apart from i have tried updating to the new bios 0905 and everything is at stock speeds with no oc'ing at all

 

also straight after using memtest even though it found errors my mem speed changed on my POST screen from 800mhz to 926mhz (this also stays the same when i reset bios settings again back to default) and the timings have also changed cant remember what to tho at the moment as im at work

Link to comment
Share on other sites

  • 2 weeks later...

ok, ive tried to return them to ebuyer as they were well within the 28 day DOA period but there refusing to replace them and have said i need to post them myself to america for testing and then they will be replaced if found to be faulty. surely thats not legal as i made them aware they were not working correctly immediatly after receiveing them, but anyway thats another story.

 

im hoping your policy is not the same so i've filled out the RMA form but im still waiting for a reply on it. getting a little worried now as it's starting to get closer to 28 days.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...