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memory failure stress testing OCZ2B1066LV4GK/ EP45-UD3P

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dito

Member
Joined
May 28, 2009
Location
Vacaville, CA
I've been trying to get my Q9550 to get to 4.0ghz. I have it stable with these settings:
Q9550 @ 3.8Ghz (448x8.5), Gigabyte EP45-UD3P, (2) 30GB OCZ Vertex in RAID0, TRUE 120 Extreme lapped, 2x2GB OCZ Blade LV PC2-8500, XFX HD4890 1gb(@980/1105Mhz), Corsair TX750W PSU, Windows 7 Pro 64
I'm running the memory at mch 333mhz 2.0B , 5-5-5-18 2T. If I try Auto, or 2.4b it will not work/crash. So I keep it at mch 333/2.0B. ET6 says DRAM is at 2.1v and mch voltage is at 1.2v. If I up the fsb to 451 (just 3 mhz) I will start getting memory errors. I've used Prime95 and OCCT to test the stability. In Prime95, it crashes at around hour 18 or so. In OCCT it crashes around 30 minutes in. The best stability I get seems like running these at mch 333/2.0B. I THINK it's the memory keeping me from going any further, at this point. Temps are about 65 max (2 cores, the other 2 are less). The funny/ironic thing is I have an identical setup except for the RAM. The other day that other PC froze, it was bad RAM (other MFR.). I swapped out that bad RAM for these OCZ2B1066LV4GK, and I EASILY got to 4ghz on AUTO settings on THAT OTHER PC! WTF?! It previously was only able to get to 3.6on the "other" RAM. I tried putting it back to this PC and STILL all I could get was 3.8. What gives? any ideas/suggestions?! THANKS IN ADVANCE!!!
 
Try setting the System Memory Multiplier to 2.00D on the 400 strap, and bump the vMCH from 1.2 to 1.3 - 1.35V. If the RAM are the low voltage Blades, then they're rated at 1.8V w/ EVP at 1.85V.
 
Thanks AGAIN REDDUC, I'll try that. Yes they're the LV blades. EVP of 1.85 Vmch or DRAM?
 
so... don't go past 1.85v DRAM?

OK am I even on the right track thinking its memoery probs? CPU passes OCCT CPU test at higher FSB, but fails OCCT Linpack test. It does fine on Prime95 until RAM is 95+% at the 18th hour. That's why I BELIEVE its memory problems...???Am I on the right track?!

ED, I would think you'd be able to get way past 4.05 on a Q9650 on H20!?

REDDUc, 400 @ 2.0D works at 448fsb, but nothing works at 453fsb. I tried (all with 5-5-5-18 timings) auto/auto, auto/2.4B, auto/2.0B, auto/2.0D, 333/2.4B, 333/2.0B, 400/2.0D, nothingthe longest run i could get on linpack Occt was 333mhz @ 2.0B, DRAM 2.1v, vMCH @ 1.2v for 28 minutes on occt and about 18 hours Prime95.
 
1.85v evp which means your warranty... ;)

I can get way past it, look at my sig. Im benching in the 4.8Ghz+ range. I run 4Ghz 24/7. :)
 
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