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BIOS Vcore glitch for P5K!!

post #1 of 5
Thread Starter 
I hope this long story is not also old news around here.

I also wish to preface this post, by stating that my system is well air-cooled, and the cpu did not go over 46* during any of the events recounted here.

I have been banging my head against the wall all week. I recently replaced an EVGA 680i with an Asus P5K. I'd never gotten my E6600 stable past 3.15ghz on the 680i, due to a ram compatibility issue I was having (don't ask) I hadn't been able to get stable past 3.2g on the P5K yet either. So I tried bumping the vcore, which I'd left at auto, and was reported as 1.368 by all my programs (CPUID, OCCT, CPU-Z, Everest, 3DMark). I tried 1.4v and 1.425v and each time the system would boot loop until either it reset itself, or it prompted me to enter the BIOS and reset my failed OC.

I didn't think an increase of 1fsb should require more than the vcore increase I was selecting in order to boot, so I started trying my 8x multi, which also would run stable at 3.2ghz
(400fsb), but this time drawing 1.4v (still set on auto in the BIOS) according to my monitoring programs. I put the voltage increase down to the increase in FSB.

I could get the system stable (according to OCCT) at a higher 3.256ghz (8x407) than I'd done before, but that was it again, AND every time I tried to increase vcore in the BIOS to stabilize the system at higher clocks, it boot looped.

Weirdest of all:
I was driven to try a 7x multi, and actually achieved my highest ever, OCCT confirmed, stable 7x470=3.29g@1.4v. I was completely baffled why my 8 and 9x multies wouldn't run this speed. Someone in the post I made this morning, offered that I had an FSB hole, which sounded ominous and irreversible.

But I am a relative newb to computers in general (1st build=last year), so I assumed that I was missing something, and tonight I found out what "it" ist

I was getting more and more curious over why I couldn't change my vcore, and, as mentioned, posted earlier today, yet the suggestions I received, though greatly appreciated, did not solve my problem. It was not until I started double checking my voltages right in the "Hardware Monitor" section (under "Power" in the BIOS) that I got on the right track.

When I was setting the vcore under the "Advanced" tab in the BIOS to 1.4, the actual vcore in the "Hardware Monitor" section was reporting as 1.32v

I'd read about the pencil mod on this site in the past, so vdroop and vdrop are not unknown to me. I googled "vdrop p5k bios", and found a link to a forum entry where someone else had had the same discovery that I was, at that moment having myself, upon reading his entry.

I rebooted into the BIOS, set the system immediately to 9x378fsb(3.4ghz), the vcore to 1.55v, rebooted and checked my vcore in the "Hardware Monitor" area. Sure enough, 1.44v!!

I've since run a couple of runs of 3DMark06, and will run OCCT when I am going to sleep just to be sure, but with my cpu currently idling at 27/23, only going to 46/43 under 3DMark CPU load, and having already had the FSB stable at 1880, I like my chances.

Again, if this is widely known - well, egg on my face. But if you find this info helpful to you, I wish I could take all the credit, and I wish I'd saved the link to the forum I read. It's that fellow that gave me, a newb, the confidence to dial in 1.55v in my BIOS (which is STILL what the "Advanced" screen claims it to be), and boot the system.

Hope this isn't to long a post, I'm new to forums, too.

Thanks for reading
Aging Gracefully
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6600 C2D Conroe 3.2g (8x431) EVGA 680i A1 Galaxy 560 Ti 950/1900/4600 2x2048mhz OCZ Reaper HPC DDR2 1066 
Hard DriveOptical DriveOSMonitor
2x320g Seagate 7200.10 ncq Samsung 20x & LG 16x XP 32bit Samsungs (24" 245BW & 20.5" 206BW) 
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G15 Ultra X4 750W Thermaltake Armor OCZ Equalizer 
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Func 
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Aging Gracefully
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6600 C2D Conroe 3.2g (8x431) EVGA 680i A1 Galaxy 560 Ti 950/1900/4600 2x2048mhz OCZ Reaper HPC DDR2 1066 
Hard DriveOptical DriveOSMonitor
2x320g Seagate 7200.10 ncq Samsung 20x & LG 16x XP 32bit Samsungs (24" 245BW & 20.5" 206BW) 
KeyboardPowerCaseMouse
G15 Ultra X4 750W Thermaltake Armor OCZ Equalizer 
Mouse Pad
Func 
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post #2 of 5
lmao. I didn't read your whole post, but from what I gather, what you experienced was vdroop. lol relax, every board has it, and it's definitely old news. Congrats on your builds though

also, I wouldn't consider 3DMark06 stable. Use either Orthos or Prime95 small fft.

I had the p5k and it was a simple 2 minute pencil mod that elimated the vdroop. It allowed me to go higher than I thought possible.

Happy adventures!
Edited by thawny - 5/25/08 at 12:10am
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.6Ghz 1.48v eVGA 680i A1 revision eVGA 9800GTX 800/2000/2350 2x1GB Patriot Extreme PC-6400 
Hard DriveOptical DriveOSMonitor
150GB Raptor 500 Barracuda Lite-on DVD-RW Combo drive vista / xp 32 dual boot 22" Samsung 226BW 
KeyboardPowerCaseMouse
Logitech G15 Antec True Power Trio 650w Antec 900 Logitech G5 
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Standard Mouse Pad 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.6Ghz 1.48v eVGA 680i A1 revision eVGA 9800GTX 800/2000/2350 2x1GB Patriot Extreme PC-6400 
Hard DriveOptical DriveOSMonitor
150GB Raptor 500 Barracuda Lite-on DVD-RW Combo drive vista / xp 32 dual boot 22" Samsung 226BW 
KeyboardPowerCaseMouse
Logitech G15 Antec True Power Trio 650w Antec 900 Logitech G5 
Mouse Pad
Standard Mouse Pad 
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post #3 of 5
Most asus boards have a fairly big vdrop all of them i owned have been bad.
SABERWOLF
(18 items)
 
XEON-WOLF
(18 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7-6800K MSI X99A GAMING PRO CARBON EVGA GTX 1080 FTW Hydro Copper G.SKILL TridentZ Series 
Hard DriveCoolingCoolingCooling
Samsung EVO 850 500 EK-SBAY Dual DDC 3.2 PWM Serial Alphacool NexXxoS ST30 Full Copper Radiator 360 Hardware Labs Black Ice SR2 Multiport Black Car... 
CoolingCoolingOSMonitor
EK-CoolStream RAD XTC 420 koolance 380i Windows 10 Pro ASUS VW246H Black 24" 2ms 
PowerCaseMouseAudio
SeaSonic M12D SS-850 850W  Thermaltake core x71 CM Storm Sentinel Advance II Corsair Void 
CPUMotherboardGraphicsRAM
X5675@4400 1.344 ASUS P6X58D-E XfX RX480 RS F3-12800CL7T-6GBPI 6-7-6-21 1T 
RAMHard DriveHard DriveHard Drive
F3-12800CL9S-4GBRL WDC WD1001FALS-00J7B1 ST31000340AS WDC WD7500AAKS-00RBA0 
Hard DriveOptical DriveCoolingOS
Hitachi HDS723020BLA642 ihas 624-A SilverStone Heligon HE01 windows 10 64 Pro 
MonitorPowerCase
Vizio 42inch lcd tv CORSAIR CMPSU-950TX Modded Rocketfish 
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SABERWOLF
(18 items)
 
XEON-WOLF
(18 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7-6800K MSI X99A GAMING PRO CARBON EVGA GTX 1080 FTW Hydro Copper G.SKILL TridentZ Series 
Hard DriveCoolingCoolingCooling
Samsung EVO 850 500 EK-SBAY Dual DDC 3.2 PWM Serial Alphacool NexXxoS ST30 Full Copper Radiator 360 Hardware Labs Black Ice SR2 Multiport Black Car... 
CoolingCoolingOSMonitor
EK-CoolStream RAD XTC 420 koolance 380i Windows 10 Pro ASUS VW246H Black 24" 2ms 
PowerCaseMouseAudio
SeaSonic M12D SS-850 850W  Thermaltake core x71 CM Storm Sentinel Advance II Corsair Void 
CPUMotherboardGraphicsRAM
X5675@4400 1.344 ASUS P6X58D-E XfX RX480 RS F3-12800CL7T-6GBPI 6-7-6-21 1T 
RAMHard DriveHard DriveHard Drive
F3-12800CL9S-4GBRL WDC WD1001FALS-00J7B1 ST31000340AS WDC WD7500AAKS-00RBA0 
Hard DriveOptical DriveCoolingOS
Hitachi HDS723020BLA642 ihas 624-A SilverStone Heligon HE01 windows 10 64 Pro 
MonitorPowerCase
Vizio 42inch lcd tv CORSAIR CMPSU-950TX Modded Rocketfish 
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post #4 of 5
lawl, even my 680i had vdroop. Totally gone 100% after the vdroop pencil mod. Simple, and completely recommended if you're doing any real overclocking
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.6Ghz 1.48v eVGA 680i A1 revision eVGA 9800GTX 800/2000/2350 2x1GB Patriot Extreme PC-6400 
Hard DriveOptical DriveOSMonitor
150GB Raptor 500 Barracuda Lite-on DVD-RW Combo drive vista / xp 32 dual boot 22" Samsung 226BW 
KeyboardPowerCaseMouse
Logitech G15 Antec True Power Trio 650w Antec 900 Logitech G5 
Mouse Pad
Standard Mouse Pad 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.6Ghz 1.48v eVGA 680i A1 revision eVGA 9800GTX 800/2000/2350 2x1GB Patriot Extreme PC-6400 
Hard DriveOptical DriveOSMonitor
150GB Raptor 500 Barracuda Lite-on DVD-RW Combo drive vista / xp 32 dual boot 22" Samsung 226BW 
KeyboardPowerCaseMouse
Logitech G15 Antec True Power Trio 650w Antec 900 Logitech G5 
Mouse Pad
Standard Mouse Pad 
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post #5 of 5
Not needed on most boards doing the vdroop will make your board fry alot quicker cause its pushed harder all the time. I did a vdroop on 2 boards 1 died then rma and it died also from the vdroop they got so hot that would warp the boards. Most boards you can just up the vcore another notch or 2 to get the vcore you need without modding the board.
SABERWOLF
(18 items)
 
XEON-WOLF
(18 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7-6800K MSI X99A GAMING PRO CARBON EVGA GTX 1080 FTW Hydro Copper G.SKILL TridentZ Series 
Hard DriveCoolingCoolingCooling
Samsung EVO 850 500 EK-SBAY Dual DDC 3.2 PWM Serial Alphacool NexXxoS ST30 Full Copper Radiator 360 Hardware Labs Black Ice SR2 Multiport Black Car... 
CoolingCoolingOSMonitor
EK-CoolStream RAD XTC 420 koolance 380i Windows 10 Pro ASUS VW246H Black 24" 2ms 
PowerCaseMouseAudio
SeaSonic M12D SS-850 850W  Thermaltake core x71 CM Storm Sentinel Advance II Corsair Void 
CPUMotherboardGraphicsRAM
X5675@4400 1.344 ASUS P6X58D-E XfX RX480 RS F3-12800CL7T-6GBPI 6-7-6-21 1T 
RAMHard DriveHard DriveHard Drive
F3-12800CL9S-4GBRL WDC WD1001FALS-00J7B1 ST31000340AS WDC WD7500AAKS-00RBA0 
Hard DriveOptical DriveCoolingOS
Hitachi HDS723020BLA642 ihas 624-A SilverStone Heligon HE01 windows 10 64 Pro 
MonitorPowerCase
Vizio 42inch lcd tv CORSAIR CMPSU-950TX Modded Rocketfish 
  hide details  
Reply
SABERWOLF
(18 items)
 
XEON-WOLF
(18 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7-6800K MSI X99A GAMING PRO CARBON EVGA GTX 1080 FTW Hydro Copper G.SKILL TridentZ Series 
Hard DriveCoolingCoolingCooling
Samsung EVO 850 500 EK-SBAY Dual DDC 3.2 PWM Serial Alphacool NexXxoS ST30 Full Copper Radiator 360 Hardware Labs Black Ice SR2 Multiport Black Car... 
CoolingCoolingOSMonitor
EK-CoolStream RAD XTC 420 koolance 380i Windows 10 Pro ASUS VW246H Black 24" 2ms 
PowerCaseMouseAudio
SeaSonic M12D SS-850 850W  Thermaltake core x71 CM Storm Sentinel Advance II Corsair Void 
CPUMotherboardGraphicsRAM
X5675@4400 1.344 ASUS P6X58D-E XfX RX480 RS F3-12800CL7T-6GBPI 6-7-6-21 1T 
RAMHard DriveHard DriveHard Drive
F3-12800CL9S-4GBRL WDC WD1001FALS-00J7B1 ST31000340AS WDC WD7500AAKS-00RBA0 
Hard DriveOptical DriveCoolingOS
Hitachi HDS723020BLA642 ihas 624-A SilverStone Heligon HE01 windows 10 64 Pro 
MonitorPowerCase
Vizio 42inch lcd tv CORSAIR CMPSU-950TX Modded Rocketfish 
  hide details  
Reply
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