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Kingston HyperX "1066Mhz" RAM instability...

post #1 of 14
Thread Starter 
I recently found out that my RAM runs unstable, as I accidently ran a large FFT-Test in prime95 instead of a Small FFT one. the small FFT was rock stable so fare but the large FFT one gave me a 0x000124 BSOD after half a minute.

Since I'm currently trying to fix some CTD issues with PC games, this seems to be a possible cause.

its the rig in my sig, and I have 4 x 2 GB of Kingston HyperX DDR2 RAM, 2 of which are labeled with 1,95v max and 2 which are labeled 2,3v max. They both SHOULD be 1066Mhz, however if I put the clock setting to 533Mhz they fail to boot, and if its left on auto, they only run at 400Mhz. I have put voltage to the lower max value of both.

Has anyone an Idea what timings I should try best or if I was fooled by the guy who sold me the 1,95v 1066Mhz RAM sticks, because maybe they are only 800Mhz?
Edited by SoulFlight - 5/26/11 at 8:32am
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post #2 of 14
Are you running them with some kind of FSB OC?

If the kits are not identical, you may have some trouble finding a sweet spot to have all 4 stick running with no issues. Voltage is key. i suggest you try to set them all at 2.3V and check for stability at 533MHz if you already haven't tried that.

Can you give some info on both kits? like model number? or the product page? speced latencies and operating voltages for spec settings should be indicated in every stick of ram, and are identical for both stick of the kit.
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post #3 of 14
Thread Starter 
No, my Ovberclock ist archieved only by CPU multiplier (gotta love the BE), so I think my OC should not have an effect on my RAM (am I right on that one?)

Right now it runs stable at 400Mhz and 5-5-5-18 and 1.8v which CPU-Z suggested me. Anyways they should do more than that.

As far as I know, they should all be 533Mhz 4-4-4-12. Only info given by the sticker is a voltage value which I think is maximum. Got those pieces too long ago.
CPU-Z shows them as DDR2-400 with max bandwith PC2-6400.
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post #4 of 14
They are not paired correctly as they are not all identical by design.

Had 2 pairs of HyperX 1066 DDR2 from the same type ,but different lots and because one pair had unmatched modules i would get an error sometimes.

I needed to test each pair separetelly and each module to see exactly the issue.
Everytime they were paired in dual channel one error (hilarious) would pop up in test 5 in Memtest ,no matter what i ve tryed.
Each module was perfectly fine and would even work at 1066 by itself though.

So for 4 modules to work you need perfectly matched sticks.Due to CPU IMC limitations you will run them at 800Mhz , if they are matched.
You can t do to much about it.

Timing wise you could try 5-6-6-18-26 and see what happens (which i ve discovered that on my config is faster than 5-5-5-18-23 for some reason , though the timings are slower in this way).
Edited by Dromihetes - 5/26/11 at 12:19pm
   
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post #5 of 14
Thread Starter 
Is there any effect overclocking with multiplier only has on RAM, because after I changed memory clock to 533Mhz at the beginning, my rig wont boot anymore and I had to take the battery out to make it work again...

this caused me, however, to loose my whole overclocking config which I somehow cannot reach anymore, because at 3,9 Ghz, regardless of voltage changes, I get a BSOD.
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post #6 of 14
If you don't change FSB, only multiplier, you are fine. CPU multi doesn't affect RAM Speed
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post #7 of 14
0x0...124 is usually CPU instability. Since it happened on large FFTs it seems to make sense.
post #8 of 14
What CPU NB voltage are you using ?!
It can be very well a CPU cache issue.
   
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post #9 of 14
Thread Starter 
Mystery solved:

My "newer" RAM is 800Mhz. According to the Kingston Product page my older 2x2GB Sticks are those:

KHX8500D2K2/4G4GB DDR2 1066MHz Non-ECC CL5 (kit of 2 – 2GB)5-5-5-152.2-2.3V

my other ones, which were sold to me by a fellow student as 1066Mhz (I'll have a word with him) are:

KHX6400D2LLK2/4G 4GB 800MHz DDR2 Non-ECC Low-Latency CL4 (kit of 2)4-4-4-121.95V


of course you cannot run them stable simultanously, since you only have one voltage setting for all sticks.


Using the 1066Mhz DDR2 I already had right now, no issues while testing.
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post #10 of 14
Quote:
Originally Posted by SoulFlight View Post
Mystery solved:

My "newer" RAM is 800Mhz. According to the Kingston Product page my older 2x2GB Sticks are those:

KHX8500D2K2/4G4GB DDR2 1066MHz Non-ECC CL5 (kit of 2 – 2GB)5-5-5-152.2-2.3V

my other ones, which were sold to me by a fellow student as 1066Mhz (I'll have a word with him) are:

KHX6400D2LLK2/4G 4GB 800MHz DDR2 Non-ECC Low-Latency CL4 (kit of 2)4-4-4-121.95V


of course you cannot run them stable simultanously, since you only have one voltage setting for all sticks.


Using the 1066Mhz DDR2 I already had right now, no issues while testing.
Well you can, u can pump more volts and mhz trough 1, or slow down the 1066 to 800mhz and just pump all with 2.1v, should be fine
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