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Need help ocing 2500k past 4.5 ghz

post #1 of 7
Thread Starter 
Hey guys, so ive been overclocking my rig the past 2 weeks and been trying to get past the 5.0 ghz mark with no luck. so for now im stopping at 4.5 @ 1.355v since its where stability is fine and temps are acceptable while running prime 95 (max 76), my rooms pretty warm today so my little water cooling loop isnt working its best. im going to be upgrading to a 3770k and a new 32 gb g.skill 1600 kit after christmas and i was to looking to squeeze some most juice out of these before i sell it a friend. meaning i dont want to fry it but ive been pushing the vcore pretty far, even got some voltage warnings on boot since i was @ 1.540 v, i know stupid but i was going for a max push of 5.1 ghz. Here's my current build and settings

CPU: i-5 2500k @ 4.5 ghz (45 x 100 mhz) w/ 1.355 Vcore
CPU Cooling: Corsair H60 - Push/ Pull 2x Corsair SP120 fans
Mobo: Asus maximus IV gene-z (updated bios)
Ram: Corsair Vengeance DDR3 (2 x 4gb) @ 666 MHZ 9-9-9-24-34@1.5 V (want to get this up to the 800 MHZ it should be able to handle... and then try to push it some more), 2 gb of this is running and a RAMDISK for my os temp files
GPU: XFX 6950 (no OC) 840 mhz core, 1325 mhz memory 2 gb, with Accelero Xtreme PLUS II
SSD 1 (OS/ Programs) - OCZ Vertex 4 120 gb ssd
SSD 2 (games) - OCZ Vertex 3 128 gb ssd
HDD: 2 TB western digital hdd
ODD: Asus blu ray burner
PSU: Corsair 750TX V2
Case: CoolerMaster Haf X



im thinking if i replaced the thermal paste i can get a few more degrees out of it since when i put this together i forgot to order some better paste and just used wat the h60 came with, stuffs probably all crusty now. im willing to play around with the cpu and ram to push out more power. heres the bios info:

AI OC Tuner - manual
Blck - 100
Turbo ratio - all cores
Multiplier - 47
Internal PLL overvtage - enabled
Memory frequency - auto
Performance enchance - enable
Xtreme tweak - enable
Igp Max - auto
Vcore - 1.355

Speed spectrum - disabled
Speed step - enable
Turbo mode - enable
Maximu power - enabled

Vcore pwm mode - t probe
Core mos volt control - auto
Vcore load line calibration - 75%
Vcore switch frequency - manual
Fixed frequency - 550 MHz
Vcore phase control - extreme
Vcore over current protection - 150%

Limited CPU max - disabled
Execute disable bit - enable
Speed step tech - enable
Turbo - enable
C1, C3, C6 - enable
Virtualization - disabled
Edited by adamthepolak - 12/11/12 at 10:52am
post #2 of 7
you only need pll overvoltage if you cant boot into windows without it.
your limited by vcore more than heat. 76* is absolutely fine. keep it under 90* and you shouldnt have problems. 1.44v is already above normal for 4.5ghz. dont screw your friend over by frying out your chip pushing 1.54v into it. thats pretty rude.
try lowering pll voltage and get your ram up to 1600ghz then try some more.
w00t
(18 items)
 
   
CPUMotherboardGraphicsRAM
ph2 x20be asus m4a785-m sapphire vapor-x 4850  geil black dragon 1066 5-5-5-15-20 
Hard DriveOptical DriveCoolingOS
wd  asus dvd multi-write arctic cooling freezer 64 pro win 7 ultimate x64 
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samsung 42" lcd logitech wireless antec basic 500watt old dell crap 
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logitech wireless pioneer 7.1 
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w00t
(18 items)
 
   
CPUMotherboardGraphicsRAM
ph2 x20be asus m4a785-m sapphire vapor-x 4850  geil black dragon 1066 5-5-5-15-20 
Hard DriveOptical DriveCoolingOS
wd  asus dvd multi-write arctic cooling freezer 64 pro win 7 ultimate x64 
MonitorKeyboardPowerCase
samsung 42" lcd logitech wireless antec basic 500watt old dell crap 
MouseAudio
logitech wireless pioneer 7.1 
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post #3 of 7
thats strange. I have a 2500k as well with the h60, and I have it OCed to 4.6ghz and I'm only using around 1.368 on the vcore. your vcore seems a bit high to me.
My temps w/ the h60 are fairly low as well, I think the maximum I've ever hit is 75 degrees
Current PC
(17 items)
 
 
CPUMotherboardGraphicsRAM
Intel i5 2500K @ 4.9 Asus P8Z68-V 7950 Corsair Vengeance 8GB Dual Channel DDR3 
Hard DriveOptical DriveCoolingCooling
Seagate Momentus XT OEM DVD drive Corsair H100i Akasa Apache Black 120mm 
OSMonitorKeyboardPower
Windows 7 Dell 2030M Cherry Corp MX-Board 2.0 Brown Switches Corsair HX650w 
CaseMouseMouse PadAudio
CM 690 II Logitech MX518 Razer Goliathus Logitech Z523 
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Current PC
(17 items)
 
 
CPUMotherboardGraphicsRAM
Intel i5 2500K @ 4.9 Asus P8Z68-V 7950 Corsair Vengeance 8GB Dual Channel DDR3 
Hard DriveOptical DriveCoolingCooling
Seagate Momentus XT OEM DVD drive Corsair H100i Akasa Apache Black 120mm 
OSMonitorKeyboardPower
Windows 7 Dell 2030M Cherry Corp MX-Board 2.0 Brown Switches Corsair HX650w 
CaseMouseMouse PadAudio
CM 690 II Logitech MX518 Razer Goliathus Logitech Z523 
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post #4 of 7
1.440v is ex termly high for a 4.5Ghz OC on SB. Majority of people get around 1.28-1.36v @ 4.5Ghz
post #5 of 7
Thread Starter 
Sry fixed the Vcore value, its at 1.355 v .

i had copied this from a previous post before i had made the changes
post #6 of 7
that voltage and temps are a lot better. more in line with what i did run on mine with a 212+
w00t
(18 items)
 
   
CPUMotherboardGraphicsRAM
ph2 x20be asus m4a785-m sapphire vapor-x 4850  geil black dragon 1066 5-5-5-15-20 
Hard DriveOptical DriveCoolingOS
wd  asus dvd multi-write arctic cooling freezer 64 pro win 7 ultimate x64 
MonitorKeyboardPowerCase
samsung 42" lcd logitech wireless antec basic 500watt old dell crap 
MouseAudio
logitech wireless pioneer 7.1 
  hide details  
Reply
w00t
(18 items)
 
   
CPUMotherboardGraphicsRAM
ph2 x20be asus m4a785-m sapphire vapor-x 4850  geil black dragon 1066 5-5-5-15-20 
Hard DriveOptical DriveCoolingOS
wd  asus dvd multi-write arctic cooling freezer 64 pro win 7 ultimate x64 
MonitorKeyboardPowerCase
samsung 42" lcd logitech wireless antec basic 500watt old dell crap 
MouseAudio
logitech wireless pioneer 7.1 
  hide details  
Reply
post #7 of 7
Thread Starter 
ill be picking up some better thermal paste this week so ill post back temps and results.

i emailed indigo to get some of their indigo xtreme as a free sample, waiting to hear back from them though still.
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