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OC'ing i7 920 Update

Post Date: 2010-03-17
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 17 Mar 2010 at 6:44pm

It's straightened out. 

"What we do in life echoes in eternity" - Maximus from Gladiator
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justin.kerr View Drop Down
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Posts: 5086 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 17 Mar 2010 at 6:49pm
Broken%20Heart
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 17 Mar 2010 at 10:35pm
Prime95 error.  Next...lol?
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Posts: 152 		  Quote neilkaz Quote  Post ReplyReply bullet Posted: 17 Mar 2010 at 11:24pm
Some serious cooling in that pic you posted!! I am just curious and realize that you were stable in prime95 with 199 clock and 1.4 V-core, but what temps were you running during prime95 at those levels?
 
I trust Justin will have you running fine really soon. .. neilkaz ..
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 17 Mar 2010 at 11:35pm
Hey thanks!  The cooling was just upgraded from a dual radiator to a triple radiator.  The max was 81C.  Averaged 78C.
 
You're right there, justin will have it running fine real soon.  Besides, if it all worked out on the first attempt, I wouldn't have learned that much...lol...the more errors...the more I learn...lol.
"What we do in life echoes in eternity" - Maximus from Gladiator
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justin.kerr View Drop Down
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Posts: 5086 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 18 Mar 2010 at 9:04am
try upping cpu VTT to +.250 if same results then drop it back and raise cpu V core two more clicks..
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 19 Mar 2010 at 7:45pm
Raised cpu VTT to +250 and started Prime95 Broken%20Heart.
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justin.kerr View Drop Down
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Posts: 5086 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 19 Mar 2010 at 7:58pm
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 19 Mar 2010 at 11:03pm
Error in Prime95 after 3 hours and 13 minutes.  Lowering cpu VTT to +250 and raising cpu Vcore two clicks.
"What we do in life echoes in eternity" - Maximus from Gladiator
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 19 Mar 2010 at 11:13pm
Lowered cpu vtt to +200 and raised cpu vcore two clicks from 1.400v to 1.4125v and restarted Prime95....Broken%20Heart
"What we do in life echoes in eternity" - Maximus from Gladiator
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 3:28am
Error in Prime95 after 4 hours and 14 minutes.
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 3:40am
Raised CPU Vcore two more clicks to 1.425v and restarted Prime95...Broken%20Heart
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 6:08am
Error in Prime95 after 2 hours and 27 minutes.
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 6:25am
Raised cpu vcore to 1.4375V and restarted Prime95...lol...Broken%20Heart.
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Dragoonseal View Drop Down
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Posts: 2247 		  Quote Dragoonseal Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 7:22am
That's a pretty high vcore, what are the temps getting to?
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 8:28am
Max high temp is 81C and average high temp is 78C.
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 8:31am
Error in Prime95 after 50 minutes...lol.  Will raise cpu vcore 2 more clicks and restart Prime95.
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justin.kerr View Drop Down
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Posts: 5086 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 9:57am
seems like the RAM maybe causing the error.
you should not need that much v core at all.
can you show a screen shot of E-leet on the voltage tab?
we need to change some stuff here.
also get mem test here if you don't have it.
 
and mem set


Edited by justin.kerr - 20 Mar 2010 at 10:05am
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neilkaz View Drop Down
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Posts: 152 		  Quote neilkaz Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 11:55am
Originally posted by rholyrag

Max high temp is 81C and average high temp is 78C.
 
Oh...to have such nice cooling ! I am running V-core a full 0.1V less than you and have slightly higher temps during prime95 with clock speed of 183 vs your 199. Then again, I am having serious doubts that my Aestek stage 2 cooling is working properly.
 
Hopefully everything is sorted out here soon for you .. neilkaz ..
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 4:55pm
Tried running memtest with the 4.168 oc and got an immediate error.  Had six instances open with the first five at 920 and the last one set to all unused ram.  Wanted to make sure it wasn't the sticks so reloaded the 3.75 oc and ran memtest again the same way and all six instances ran 200% without error.  Screenshot below of cpu tweak and e-leet.
 
 
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justin.kerr View Drop Down
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Posts: 5086 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 5:34pm
use E-leet to adjust voltages, and post a screen shot using prime95 under load of CPUz
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 10:14pm
Screenshot of e-leet and cpu-z.
 
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justin.kerr View Drop Down
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Posts: 5086 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 10:36pm
this is under load?
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 11:11pm
Actually had to drop vcore down from +0.13125 to +0.11250 in e-leet in order for Prime95 to run without an immediate error.  Ran memtest at the +0.1125 without error.  Screenshots of e-leet, cpuz and memtest.
 
.
 
 
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justin.kerr View Drop Down
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Posts: 5086 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 11:17pm
this is a perfect reason that I hate doing this remotely.. in person, you would have a higher OC a long time ago, but this way it takes so long, and ha s alot of wild goose chases/Sleepy
so have you tried  CPU VTT at 1.35v?
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 11:35pm
lol...If it helps, I am having a blast!!  I am learning a lot from you!  I appreciate the time you have taken to help me out.  Plus if you were here in person, I wouldn't be learning as much.  So no worries.
 
If 1.35v = +250 in BIOS for CPU VTT, yes I did try that, but I don't remember if the memory timings were set manually or if they were set to auto when I ran CPU VTT at +250.  Not sure how much of a difference that would make? 
 
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justin.kerr View Drop Down
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Posts: 5086 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 20 Mar 2010 at 11:48pm
I seen your mem timings are not the same every time. lol
every chip is different, and going to 3.6-3.8Ghz you can treat nearly every chip the same, and get good results, but you are crossing into territory that requires specialization, so some chips love VTT others hate it, same with other voltages, so I would try it see what happens, we will get this figured out. lol
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 21 Mar 2010 at 12:01am
Will give the cpu vtt another go at +250, and see what happens.
 
Current memory timings in BIOS are set manually to 9-9-9-24, tRFC is set to auto and current value is 88.
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justin.kerr View Drop Down
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Posts: 5086 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 21 Mar 2010 at 12:28am

the mem timings, is another thing that really starts to come into play once you start pushing the max factory rated stuff.. lol
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 21 Mar 2010 at 5:05pm
lol....Getting closer. Smile
 
Prime95 error after 13 hours and 7 minutes.  Settings in BIOS were vcore at 1.40625 and vtt was at +200.
 
Changed vtt to +225 and left vcore at 1.40625, ran Prime95 got an immediate error.
 
Changed vcore to 1.40 and left vtt at +225, started Prime95 and has been running for 90 minutes so far.
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 24 Mar 2010 at 1:08am
lol...have found several settings that don't work.
 
Vcore at 1.40V and VTT at +225 - Error in Prime95 in 4h 26m
Vcore at 1.3875 and VTT at +200 - Memtest passed 6 instances at over 200% each, Error in Prime95 in 2h and 11m
Vcore at 1.39375 and VTT at +200 - Error in Prime95 in 11h 58m
Vcore at 1.38750, VTT at +125 and DIMM Voltage at 1.650 - Pass 20 passes of Linx, Error in Prime95 in 1h 57m
Vcore at 1.38750, VTT at +125 and DIMM Voltage at 1.625 - Error in Prime95 in 11h 53m
Vcore at 1.3875, VTT at +125 and DIMM vVoltage at 1.625, changed timings from 9-9-9-28 to 9-9-9-24 - Passed 20 passes of Linx, currently running Prime95
 
Changed DIMM voltage because when I was monitoring voltages in e-leet, the DIMM voltage would get as high as 1.69.
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rholyrag View Drop Down
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 24 Mar 2010 at 4:50am
Originally posted by rholyrag

lol...have found several settings that don't work.
 
Vcore at 1.3875, VTT at +125 and DIMM vVoltage at 1.625, changed timings from 9-9-9-28 to 9-9-9-24 - Passed 20 passes of Linx, currently running Prime95
 
Changed DIMM voltage because when I was monitoring voltages in e-leet, the DIMM voltage would get as high as 1.69.
 
Error in Prime95 after 3h and 55m.
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Posts: 5086 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 24 Mar 2010 at 9:06am
don't drop the DIM voltage, when running the RAM at full rated specs, you will need full voltage, if not a tad more, Intel specs that you have to keep the RAM voltage within .5V of VTT voltage.
E-leet will not report accurate voltages, if you want accurate voltage readouts, you will need to buy a good digital multi meter, and do it manually.
 
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Posts: 843 		  Quote rholyrag Quote  Post ReplyReply bullet Posted: 27 Mar 2010 at 11:42pm
lol...my success rate at the higher overclocks, meaning anything close to 4.0Ghz has not been good...Ouch.  Even though the high overclocks would pass 20 passes of linx and memtest, it would not pass Primed 95.  All the errors in Prime95 were all while testing at or above an fft length of 512, which if I read the info on Prime95 right, these are all considered large fft's and most of the time points to a problem with memory.  So I lowered the overclock to the settings below and it passed 24 hours of Prime95.
 
CPU Clock Ratio ( 20X )
CPU Host Frequency (Mhz) ( 179 )
MCH Strap ( Auto )
CPU Uncore Frequency (Mhz) ( 16X)
CPU Clock Skew ( 0 ps )
Spread Spectrum ( Disabled )
PCIE Frequency (Mhz) ( 105 )
Memory Feature
Memory Speed (Standard)
Memory Control Setting ( Enabled )
Memory Frequency ( 1067mhz / 2:8 )
Channel Interleave Setting ( 6 Way )
Rank Interleave Setting ( 4 Way )
Memory Low Gap ( Auto )
tCL Setting ( 9 )
tRCD Setting ( 9 )
tRP Setting ( 9 )
tRAS Setting ( 28 )
tRFC Setting ( 88 )
Command Rate ( 1T ) Memory timings set to super talent specs.
Voltage Control
EVGA VDroop Control ( Without VDroop )
CPU VCore ( 1.375V)
CPU VTT Voltage ( +50 )
CPU PLL VCore ( 1.8 )
DIMM Voltage ( 1.575V )
DIMM DQ Vref ( +0mV )
QPI PLL VCore ( 1.250V)
IOH VCore ( 1.250V )
IOH/ICH I/O Voltage ( 1.525V )
ICH VCore ( 1.100V )
PWM Frequency ( 800 Khz )
CPU Feature
Intel SpeedStep ( Disabled )
Turbo Mode Function ( Enabled )
CxE Function ( Disabled )
Execute Disable Bit ( Disabled )
Virtualization Technology ( Disabled )
Intel HT Technology ( Enabled )
Active Processor Cores ( All )
QPI Control Settings ( Enabled )
QPI Link Fast Mode ( Enabled )
QPI Frequency Selection ( 4.8GT/s )
PnP/PCI PCI Express
Maximum Payload Size ( 128 )
 
It appears from the testing that when the memory goes above 1500mhz, it does not pass Prime95 even though it will pass linx and memtest.
 
Justin in your experience, what are your thoughts?
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Posts: 5086 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 28 Mar 2010 at 1:31pm
Yes, some RAM is very tough to get to run full speed with good timings, sometimes you have to tweak a lot of the sub-timings to get it to pass, that is why I hate AUTO setings. lol
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