I5 2500k Unstable - SOMETIMES, Help! :(

[Neil79]

My settings for 4.7GHZ

-i5-2500K 4.7GHZ,Gigabyte Z68XP-UD3P,HyperX 8GB,GTX 560Ti OC,Samsung 1TB+SSD CACHE,Corsair V2 600W,Win 7 64bit.

BIOS VERSION - F6

\MB - ( M.I.T )/
\Advanced Frequency Settings/

CPU CLOCK - 33X
BCLK - ( DISABLED ) left at default 100mhz
EXTREME MEMORY PROFILE XMP - ( PROFILE 1 )
SYSTEM MEMORY MULTI - ( AUTO )

\Advanced Cpu Core Features/

CPU CLOCK RATIO [33X]
PWN FREQUENCY CONTROL [ AUTO ]
INTERNAL CPU OVER CURRENT PROTECTION [ AUTO ]
INTERNAL CPU PLL OVERVOLT [ AUTO ]
RATIO CHANGES IN OS [ DISABLED ]
INTEL BOOST TECH [ AUTO ]
RATIO 1 - 4 [ 47 ]
TURBO POWER LIMIT [ 250 ]
CORE CURRENT [ 250 ]
CPU CORES ENABLED [ ALL ]
CPU ENHANCED HALT C1E [ AUTO ]
C3/C6 STATE SUPPORT [ AUTO ]
CPU THERMAL MONITOR [ DISABLED ]
BI-DIRECTIONAL PROCHOT [ AUTO ]

\Advanced Memory/

EXTREME MEMORY PROFILE X.M.P [ PROFILE 1 ]
SYSTEM MEMORY MULTI SPD [ AUTO ]
PERFORMANCE ENHANCE [ STANDARD ]
DRAM TIMING SELECT SPD [ AUTO ]
CHANNEL A - B [ AUTO ]

\Advanced Voltage Settings/
MULTI-STEPS LOAD-LINE [ LEVEL 6 ]
CPU VCORE [ 1.340V ] ( TEST WITH PRIME 95/INTEL BURN TEST AND THEN LOWER THE VOLTS UNTIL UNSTABLE TO FIND YOUR LOWEST STABLE VOLTAGE )
QPI/VTT VOLTAGE 1.050V [ AUTO ]
SYSTEM AGENT VOLTAGE 0.920V [ AUTO ]
DYNAMIC VCORE [ AUTO ]
GRAPHICS DVID [ AUTO ]
CPU PLL VOLTAGE 1.800V [ 1.800V ]
DRAM VOLTAGE 1.500V [ 1.616V ] ( LOWER OR HIGHER DEPENDING ON MEMORY REQUIREMENTS )
DRAM VREF 0.750V [ AUTO ]
DRAM TERMINATION 0.750V [ AUTO ]
CH-A/B ATA VREF 0.750V [ AUTO ]
CH-A/B ADDRESS VREF [ AUTO ]

\Misc Settings/

ISOCHRONOUS SUPPORT [ ENABLED ]
VIRTUALIZATION TECH [ ENABLED ]

\Power Management/

HPET SUPPORT [ ENABLED ]
HPET MODE [ 64BIT ] - 64bit windows versions

\Pc Health/

CPU SMART FAN CONTROL [ DISABLED ]

Sometimes it will work for a week other times boot loop, I can play hours and hours of BF3 and skyrim, do lots of photography. It's 10+hrs prime 95 stable and many many runs of Intel Burn test at both medium and high. Yet sometimes when you boot the system it will hit a boot loop, and keep getting to the bios logo and turning off, then turning back on again. You have to leave the power cable out for a bit, then reboot while pressing DEL to get to the bios setting's screen, to reset back to 4.6GHZ.

However If i then go back to the bios and set to 4.7GHZ with my above settings it will work perfectly again, any advice?

 

[Neil79]

Also, I've been reading about a problem with this board, and all gigabyte z68 boards of an endless boot loop, which can spontaneously start happening even after a month or so of running fine. I'm a bit nervous since it appears to be the luck of the draw as to whether or not you get a faulty board. Some say the boot loop happened after they tried to overclock. Others claim it happens if you hit the restart button. I see many of you have had success overclocking with no boot loop problems. Has anyone encountered this problem?

Damn it

http://www.overclock.net/t/1034724/gigabyte-p67-z68-boot-cycling-problem

 

[Paragon]

Are you using the latest BIOS for the board?

 

[blade52x]

Damn it

http://www.overclock.net/t/1034724/gigabyte-p67-z68-boot-cycling-problem

Gigabyte has these random retarded issues with their boards. I remember with my P35-DQ6 and Q6600 overclocked to 3.6ghz, cold booting was be a hassle. I had this issue where it would turn on for a second, shut off, and then attempt to turn on, except half the time everything would just flicker and go dead. For a while I thought it was just me, until a friend of mine reported an identical problem with his 45nm quad on a different board.

But a P35-DS3L had no such issues overclocking a X3380. Seems hit or miss.