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Gigabyte EP45-UD3 Series Owners Guide - Page 725

post #7241 of 21186
Tried going to 3.8ghz on nearly-stock voltages last night (vcore bumped a notch) and failed doing prime blend (using all memory required me to go to "Custom" but preserved blend settings) at 4 in the morning. Thoughts on the screenshots?

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post #7242 of 21186
Hmm. I'd try bumping up the vCore maybe a couple ticks, and you might want to try putting the MCH core up around 1.2, maybe 1.22.
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post #7243 of 21186
Quote:
Originally Posted by Burn View Post
Tried going to 3.8ghz on nearly-stock voltages last night (vcore bumped a notch) and failed doing prime blend (using all memory required me to go to "Custom" but preserved blend settings) at 4 in the morning. Thoughts on the screenshots?
I would raise Term to 1.26v and MCH to 1.24

edit: you will get stable quicker and more reliably if you test sm fft first ,getting the CPU portion of the clock settled ---Then adjust the MCH Core to stableize the Blend portion
Edited by dennyb - 10/14/09 at 7:56am
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post #7244 of 21186
This is why I bought my board The lovely aftermarket support
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post #7245 of 21186
Thread Starter 
Quote:
Originally Posted by dennyb View Post
I would raise Term to 1.26v and MCH to 1.24

edit: you will get stable quicker and more reliably if you test sm fft first ,getting the CPU portion of the clock settled ---Then adjust the MCH Core to stableize the Blend portion
Yep, all of thee above.
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post #7246 of 21186
Code:

CPU = Q9550 E0
Motherboard = EP45-UD3P 1.6
BIOS Version = FA
Ram = 2x2GB G.Skill F2-8000cl5-4gbpq
 
MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster .............: Auto
CPU Clock Ratio .....................: 8x
Fine CPU Clock Ratio.................: +0.5
CPU Frequency .......................: 4.00 Ghz (471 * 8.5)
 
 
Clock Chip Control 
Standard Clock Control
CPU Host Clock Control...............: Enabled
CPU Host Frequency (Mhz) ............: 471
PCI Express Frequency (Mhz) .........: 100
C.I.A. 2 ............................: Disabled
 
 
DRAM Performance Control
Performance Enhance..................: Standard
Extreme Memory Profile (X.M.P.)......: Disabled
(G)MCH Frequency Latch...............: 333 Mhz
System Memory Multiplier ............: 2.00B
Memory Frequency (Mhz) ..............: 942
DRAM Timing Selectable ..............: Manual
 
Standard Timing Control
CAS Latency Time.....................: 5
tRCD ................................: 5
tRP..................................: 5
tRAS.................................: 15
 
 
Advanced Timing Control
tRRD.................................: Auto
tWTR.................................: Auto
tWR..................................: Auto
tRFC.................................: 45
tRTP.................................: Auto
Command Rate (CMD) ..................: Auto
 
 
Channel A
Static tRead Value...................: Auto (9)
Channel B
Static tRead Value...................: Auto (9)
 
 
Motherboard Voltage Control
CPU
Load Line Calibration (LLC) .........: Disabled
CPU Vcore............................: 1.33125
CPU Termination.....1.200V*..........: 1.260
CPU PLL.............1.500V*..........: Normal
CPU Referen.........0.755V*..........: Normal
 
MCH/ICH
MCH Core............1.100V...........: 1.280
MCH Reference.......0.800V...........: Auto
MCH/DRAM Ref........0.900V...........: Auto
ICH I/O.............1.500V...........: Auto
ICH Core............1.100V...........: Auto
 
DRAM
DRAM Voltage .........1.800V.........: 2.1
DRAM Termination .....0.900V.........: Auto
Channel A Reference ..0.900V.........: Auto
Channel B Reference ..0.900V.........: Auto
Any ideas?
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post #7247 of 21186
I would run those #s with LLC enabled--you do not need to worry about spikes getting into dangerous levels until above about 1.38 in CPUZ. I run it enabled for stable clocks up to 4.25GHz and 1.40 V-core in BIOS. Would not be afraid to go a bit further if I needed to

edit also raise the Term up to about .03 or .04 below V-core---this differential seems to work well
Edited by dennyb - 10/14/09 at 11:22am
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post #7248 of 21186
Thread Starter 
Yep what denny said and maybe set the MCH latch to 400.
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post #7249 of 21186
I enabled LLC (despite what Anandtech said) until I can get my paws on my university's oscilloscopes and actually measure what happens during those transients that Anandtech described. I was able to lower my vcore to 1.3 in-BIOS but under full load it's coming up at 1.264 in CPU-Z and in HWMonitor. So far it passed 10x LinX and it's on test 12 for Prime SFFT.
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post #7250 of 21186
Quote:
Originally Posted by Burn View Post
I enabled LLC (despite what Anandtech said) until I can get my paws on my university's oscilloscopes and actually measure what happens during those transients that Anandtech described. I was able to lower my vcore to 1.3 in-BIOS but under full load it's coming up at 1.264 in CPU-Z and in HWMonitor. So far it passed 10x LinX and it's on test 12 for Prime SFFT.
Ya, we all heard that Anandtech rubbish. You don't need to pamper these processors. Timex built'em--they take a lickin' and keep on tickin'

The pencil mods did the same thing and they were not problematic

Guys a few months back said 1.3625v in BIOS was it. Now we know it is 1.45v in CPUZ and if you want --higher for benching. But I would not dare try that
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