Geil 2133MHz RAM problem

well i found this on the german forum, not sure what it means

quote

Changelog zum BIOS A7583IMS.162


Update new Clarkdale(10652) MicroCode.

Add Clarkdale auto voltage table.


Remove I5 G6950 DRAM Frequency 1333Mhz(Only 1066Mhz support)


Auto set C-State when Turbo Boost item be changed.
 
update:

seems the problem was Avast! antivirus. i think this has some sort of memory checking tool which was gimping out.

I think the route of the problem may like with the BIOS, i.e. incorrectly reporting speeds or something but ive changed AV and can now run at a tasty 1850MHz
 
Sorry to hijack your thread but was wondering are Geil 2133MHz RAM any good for a core i7 920 assuming that i buy 2 of them, giving me 6-8gb ?

They seem a lot cheaper than tri-channel ddr3 being sold and offer considerable overclocking headroom.

Edit: Ok let me rephrase that; Will an asus p6t or p6t se mobo be able to run 4 sticks of this ram in tri channel or do i absolutely need 3 sticks of ram?
 
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The RAM is tested in pairs to run at the rated settings i.e. 2133 @ CAS9.

The geil should work but there is no guarantee that it'll run at full rated speed.

Update regarding my original problem is that it isnt fixed, there are still problems from a cold boot. Backed it off to 1480 to see if that will behave.
 
I eventually gave up on getting the system to boot first time with RAM faster than 1100MHz a few months back.

However, it niggled me ever since (although there's basically no real world difference i just dont like being defeated) so i had another look at it earlier in the week.

Tried 1 stick first @ 1850MHz and that was fine. I then put the 2nd back in low and behold it will now cold boot with 4GB at this speed.

I wouldn't like to speculate why it now works, there have been no major hardware or software changes to the machine.

Anyways, at least im happy that the RAM is now doing what it says it should.
 
Good news, you won in the end! :D

It's a pity you can't change the memory multiplier up to 11x to hit the 2000MHz mark your RAM is actually capable of. How come memory multipliers are locked like that? Is it a motherboard restriction?
 
yeah its 10x 8x or 6x bclk.

I'm at 185MHz x 20 for 3.7GHz so thats 1850MHz.

According to sisandra benchmarks i have pretty much the same memory bandwidth as a triple channel X58 @ 1333MHz CAS8.

not bad for a dual channel platform
 
Sometimes puter like to throw fits for no reason, then decide to fix themselves randomly :/

Anyway I would try tightening up the timings....You might be able to run CAS7 at that speed.
 
I'm CAS 9 1T atm.

CAS 7 is might be optimistic but CAS8 could be doable.

Wud laff if it started throwing fits again and i had to go back to 1100MHz lol.
 
Im hoping that the R3E can handle 6 of these modules at full speed =D.

Its great ram, but the maximum clock you can reach is limited by the mobo + CPU.
 
I'm running the Geil 2133 ram, never had a problem with it running 200X10 to give
2000mHz, timings are 8-8-8-28 @1.64v
 
VTT = 1.3v, you're a brave man. That's quite a bit over intels 1.21v spec altho i understand there's still a debate about what's safe and what's not.

Although CPU-Z was reporting timing = 1T, it was actually set to 3 in the bios due to auto timings.

Just benched it on sisandra and 2T increased bandwidth and reduced latency so i guess it was running 3T....didnt even think that was an option...
 
Just tried 8-8-8-24 T1 works just the same

OC.jpg
 
In my Bios the settings show as QPI/VTT voltage, as I said, I've set it to 1.3V, but a know a lot of guys use 1.36V and have never heard of any failing yet!!!!
 
I think QPI is fine up to 1.35v. I just dont use any voltages that go purple in my UD5 bios, and thats the purple limit for the QPI.

If I try to set my ram to 2000 Mhz, even at T3 Cas 10, my PC fails and requires a CMOS reset. So theres another reason to ditch my UD5 because I cant use this ram to its full potential.
 
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