formatted or unformatted that is the question
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dwsolo
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« Reply #30 on: July 06, 2010, 08:30:04 PM »
Not sure what you mean by "a link of my memory".
The manufacturer would appear to be Corsair. Do the specs I quoted above not provide the necessary information?
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Britec
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« Reply #31 on: July 07, 2010, 03:26:31 AM »
Sorry dwsolo me bad I now have your part number of your memory

Corsair Platinium Series - CM3X2G1333C9 2Gb DDR3-1333Mhz





In bios make sure your settings are

DRAM frequency to DDR3-1333Mhz,
DRAM voltage to 1.50,
DRAM timing control as follows
tCL CAS# latency to 9
tRCD Delay to 9
tRP to 9
tRAS to 24

Example of timing settings in Bios (do not use these settings in photo)


Make sure that you are using the setting above, because any overclock setting will make the system unstable
« Last Edit: July 07, 2010, 03:38:53 AM by Britec » Logged


dwsolo
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« Reply #32 on: July 07, 2010, 07:53:04 AM »
Hi
I take it from the info given there that my new BIOS settings are correct except that the DRAM frequency should be DDR-1333 instead of 1066. Is that correct?
Am I "underclocking" with  1066 (as recommended by the manufacturer)? Am I safe with 1066 or should I change up?
(PS It's been stable today... :-))
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Britec
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« Reply #33 on: July 07, 2010, 11:10:45 AM »
I have read alot about your ram seems there alot of people with the same problems as you.
you payed for ram to run at 1333Mhz so dropping memory speed down means there might be problems with that ram at 1333Mhz
if this is the case send ram back and get different ram, no point in run at lower clock speed, its not what you payed for.
I have seen people say up the voltage to 1.6 volts and it runs fine, but this is then overclocking. I would no overclock that ram your void your warranty.

Sometimes flashing your bios with latest updates fix issus with hardware. if the system is unstable with ram running at 1333Mhz then send it back and get different ram thats what i would do
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dwsolo
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« Reply #34 on: July 07, 2010, 11:33:34 AM »
Hi
They say:
"by setting the speed to 1066 it allows us to tighten the ram timings to give a better performance and it also stabilises the system"
Is this a valid argument?
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Britec
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« Reply #35 on: July 07, 2010, 03:02:24 PM »
Tell them why are they selling ram thats ment to run at 1333Mhz and it cant because it makes the system unstable?
Tell them 1066Mhz is not better performance than 1333Mhz and you got the ram because you wanted to run the ram at 1333Mhz
and not to underclock the ram to 1066Mhz because it cant run at that speed? ask them why they are selling ram with a clock speed of 1333Mhz if it cant run at that speed.

dwsolo as long as your motherboard supports 1333Mhz memory it should be ok to run it, dont except ram that you got to underclock because it wont run at 1333Mhz
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dwsolo
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« Reply #36 on: July 08, 2010, 12:23:15 AM »
Thanks I have written to them.... (emailing you)
« Last Edit: July 08, 2010, 01:08:19 AM by dwsolo » Logged
dwsolo
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« Reply #37 on: July 14, 2010, 09:16:10 PM »
Just a quick update. It looks like everything is now fine:
I suspect that a combination of things was causing the BSODs, although of course the memory management was the main problem. The BIOS change didn't solve the problem immediately, but after clean-reinstalling Win 7 and reinstalling the programmes I need only when I need them, and then following up some errors reported in the event viewer (and googling for solutions), it may well be that I now have the most stable system I've ever had on this machine. (And of course I've made an image!)
More importantly, I also learnt how to re-seat the memory chips (at last!, I was so worried about touching them!), and this could well also have helped.
So many thanks to you all  Kiss for your assistance.
Of course, I could be tempting fate by writing this, but if anything goes wrong the manufacturer can still send me replacement chips at a later stage.
Thanks to all :-)
Kind regards
David
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Britec
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« Reply #38 on: July 15, 2010, 01:45:30 AM »
Your welcome David, makes you feel good when you fix a problem that would of cost money. Well done.
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dwsolo
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« Reply #39 on: September 10, 2010, 04:16:19 AM »
Hi Britec
Here's an update which you may find useful.

The computer continued to get BSODs even after the manufacturer sent new Corsair memory chips.
The manufacturer's explanation - after sending more compatible Samsung chips recently (which appear to work fine even without the above mentioned BIOS tweak for the Corsair ones) - was as follows:

"It was a long and on-going debate between ourselves, Asus and Corsair which revealed the incompatibility, their stance is that it does work, but obviously we have proved otherwise, this is why it was on-going for so long, we have now changed over to Kingston and Samsung RAM, and hey presto, all problems are gone, so you don’t need to reset the BIOS settings, these work from the defaults."


This suggests to me that I have been a victim of long "on-going debates", and that this would probably have not occurred if I had purchased 8 months later, after the debates were concluded (assuming they are concluded).
If other people with Asus motherboards have BSODs and if their memory chips are Corsair, this may be a cause. They might consider Kingston or Samsung chips instead - (but always checking the various  compatibility sites).
Britec - I'm sure a compatibilty site link would be useful here... :-)



Kind regards
David

(PS I should mention at this point that I had problems with the Samsung chips initially - I had not realised how much pressure was needed to insert the lower edge into the motherboard slots (I was afraid of harming the motherboard if I applied too much pressure). It turns out that they need rather more "clicking into place" than the old Corsair ones did, possibly because the Corasir ones were more bulky than the rather "naked"-looking Samsung ones, but all is well now....)
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Britec
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« Reply #40 on: September 10, 2010, 06:46:25 AM »
Crucial Memory Advisor™ tool

http://www.crucial.com/
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dwsolo
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« Reply #41 on: September 10, 2010, 02:04:27 PM »
Hi Britec
A very good site. Although I didn't find my motherboard immediately (ie it wasn't on the drop down list), the agents there were happy to assist and sent me exactly the right info (in case I should need it later).  (Of course they only sell "Crucial" memory chips so they weren't able to make specific comments regarding Corsair and Samsung)
Cheers :-)
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