OK im one of the unlucky ones that having the 6 to 4gig problem, first thought it was my mobo which was a ASUS P6T SE so changed it for a Gigabyte UD3R which i do find a slightly better mobo.
But after a couple of days the horrid, silly haven't got a clue how to sort out 4gig problem raised it ugly head again.
Now before anybody says I've tested all the memory one at a time without any errors
I've set it up in the bios correctly when clocking & tried running it at stock problem still there.
I've checked both mobo's for bent pins to which i have none.
I've swaped my cpu with somebody else for a few days to test to see if it dodgy mem controller which im glad to say it hasn't got .
I've tried diffrent memory problem still there.
Tired diffrent mem timing problem still there.
In all my years of building PC's im at a complete loss as to what causing this problem, that I and countless others are suffering without any cause as to why but others are having zero problems running triple channnel.
Here my quick easy fix to the problem.
Rip out a stick of memory run it in dual channel, yes the i7 920 runs perfectly fine in dual as it would in triple.
You loose some bandwidth down to 19 from about 25 but tbh it nothing that noticable in the real world ie games ect, only see the diff in benchmarks & it still has a massive amount of bandwidth compared to the Skt 775 Quads.
So basically your I7 920 becomes a i7 860 or an i7 850 as it's has slightly slower stock clocks.
Also one other thing i've noticed when running just 4gig in dual channel that the cpu clocks slightly better and with less volts as it having less stress on the built in mem controller i would think.
Ok so your wondering has the 4gig turned into the 2gig problem
Nope not at all boots everytime with 4gig of memory showing erm 4gig.
Im now running my Corsair XMS3 7-7-7-20 T1 at 2000mhz 8-8-8-24 T1 1.65v without any problems when using 6gig i couldn't get it stable at this speed with those timing with 4gig no probs at all.
Im actually more happier now just running 4gig without any problems than i was using 6gig with constant headache trying to find a fix.
Everything runs just as good on 4gig as it would using 6gig ie windows 7 64bit CS4 Lightroom 2 ect so im not missing the extra 2gig and extra bandwidth.
so if your having probs with 6gig just give 4gig a try.
But after a couple of days the horrid, silly haven't got a clue how to sort out 4gig problem raised it ugly head again.
Now before anybody says I've tested all the memory one at a time without any errors
I've set it up in the bios correctly when clocking & tried running it at stock problem still there.
I've checked both mobo's for bent pins to which i have none.
I've swaped my cpu with somebody else for a few days to test to see if it dodgy mem controller which im glad to say it hasn't got .
I've tried diffrent memory problem still there.
Tired diffrent mem timing problem still there.
In all my years of building PC's im at a complete loss as to what causing this problem, that I and countless others are suffering without any cause as to why but others are having zero problems running triple channnel.
Here my quick easy fix to the problem.
Rip out a stick of memory run it in dual channel, yes the i7 920 runs perfectly fine in dual as it would in triple.
You loose some bandwidth down to 19 from about 25 but tbh it nothing that noticable in the real world ie games ect, only see the diff in benchmarks & it still has a massive amount of bandwidth compared to the Skt 775 Quads.
So basically your I7 920 becomes a i7 860 or an i7 850 as it's has slightly slower stock clocks.
Also one other thing i've noticed when running just 4gig in dual channel that the cpu clocks slightly better and with less volts as it having less stress on the built in mem controller i would think.
Ok so your wondering has the 4gig turned into the 2gig problem
Nope not at all boots everytime with 4gig of memory showing erm 4gig.
Im now running my Corsair XMS3 7-7-7-20 T1 at 2000mhz 8-8-8-24 T1 1.65v without any problems when using 6gig i couldn't get it stable at this speed with those timing with 4gig no probs at all.
Im actually more happier now just running 4gig without any problems than i was using 6gig with constant headache trying to find a fix.
Everything runs just as good on 4gig as it would using 6gig ie windows 7 64bit CS4 Lightroom 2 ect so im not missing the extra 2gig and extra bandwidth.
so if your having probs with 6gig just give 4gig a try.
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