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Need help oc'ing 2500k

post #1 of 15
Thread Starter 
Hey guys, I just got this new 2500k from frys last week and it is a beast. It can boot into windows with at least a 54x multi, haven't tried more than that yet. However, I'm finding it extremely difficult to get anything remotely stable on this cpu. Any settings in particular I should play around with to get this thing stable at higher clocks?
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Ryzen Build
(14 items)
 
Fiance's Rig
(12 items)
 
 
CPUMotherboardGraphicsRAM
AMD Ryzen 5 1600 @ 3.8ghz ASUS ROG Strix B350-F ASUS ROG Strix RX 580 8GB @ 1480mhz Team T-Force Night Hawk RGB 2x8GB (coming soon) 
Hard DriveHard DriveCoolingOS
SanDisk X400 512GB (custom enclosure) WD Blue 1TB | Raid 1 Deepcool Captain 240 RGB Windows 10 Pro 
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ViewSonic XG2701 Turbot Mechanical Keyboard EVGA SuperNova P2 650w NZXT S340 Elite 
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Razer Deathadder Chroma Glorious PC Gaming Race Pad 
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Intel Core i5 2500K @ 4.6ghz ASRock Z68 Extreme3 Gen3 MSI HD 7850 2GB @ 1ghz Mushkin Ridgeline Series @ 1600mhz 
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Intel 520 Series Western Digital Caviar Black Cryorig H7 Quad Lumi W/ Xigmatek Purple LED Windows 10 Pro 
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post #2 of 15
You need to play with PLL Overvoltage.
PLL Overvoltage is needed for high overclocks. I'm pretty sure I saw somewhere on forums its needed for 4.8GHz+.
Sandy love
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2500K 4.5GHz 1.32V Asus P8P67 PRO 3.0 Sapphire 5850 Hd 900/1250 Mushkin Blackline 2x4GB 1.35V 
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Sandy love
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post #3 of 15
Thread Starter 
Quote:
Originally Posted by Shame486 View Post
You need to play with PLL Overvoltage.
PLL Overvoltage is needed for high overclocks. I'm pretty sure I saw somewhere on forums its needed for 4.8GHz+.
I've tried enabling that, but my cpu isn't even stable at 1.4v @ 4.8ghz. However, it will boot into windows at a much lower voltage, so I know there is something i'm missing here.
Ryzen Build
(14 items)
 
Fiance's Rig
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CPUMotherboardGraphicsRAM
AMD Ryzen 5 1600 @ 3.8ghz ASUS ROG Strix B350-F ASUS ROG Strix RX 580 8GB @ 1480mhz Team T-Force Night Hawk RGB 2x8GB (coming soon) 
Hard DriveHard DriveCoolingOS
SanDisk X400 512GB (custom enclosure) WD Blue 1TB | Raid 1 Deepcool Captain 240 RGB Windows 10 Pro 
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ViewSonic XG2701 Turbot Mechanical Keyboard EVGA SuperNova P2 650w NZXT S340 Elite 
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CPUMotherboardGraphicsRAM
Intel Core i5 2500K @ 4.6ghz ASRock Z68 Extreme3 Gen3 MSI HD 7850 2GB @ 1ghz Mushkin Ridgeline Series @ 1600mhz 
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Intel 520 Series Western Digital Caviar Black Cryorig H7 Quad Lumi W/ Xigmatek Purple LED Windows 10 Pro 
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Ryzen Build
(14 items)
 
Fiance's Rig
(12 items)
 
 
CPUMotherboardGraphicsRAM
AMD Ryzen 5 1600 @ 3.8ghz ASUS ROG Strix B350-F ASUS ROG Strix RX 580 8GB @ 1480mhz Team T-Force Night Hawk RGB 2x8GB (coming soon) 
Hard DriveHard DriveCoolingOS
SanDisk X400 512GB (custom enclosure) WD Blue 1TB | Raid 1 Deepcool Captain 240 RGB Windows 10 Pro 
MonitorKeyboardPowerCase
ViewSonic XG2701 Turbot Mechanical Keyboard EVGA SuperNova P2 650w NZXT S340 Elite 
MouseMouse Pad
Razer Deathadder Chroma Glorious PC Gaming Race Pad 
CPUMotherboardGraphicsRAM
Intel Core i5 2500K @ 4.6ghz ASRock Z68 Extreme3 Gen3 MSI HD 7850 2GB @ 1ghz Mushkin Ridgeline Series @ 1600mhz 
Hard DriveHard DriveCoolingOS
Intel 520 Series Western Digital Caviar Black Cryorig H7 Quad Lumi W/ Xigmatek Purple LED Windows 10 Pro 
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post #4 of 15
Quote:
Originally Posted by Behemoth777 View Post
I've tried enabling that, but my cpu isn't even stable at 1.4v @ 4.8ghz. However, it will boot into windows at a much lower voltage, so I know there is something i'm missing here.
1.4volts at 4.8 would be a nice voltage, maybe you don't have a decent chip,

try 1.4 at 4.5ghz, that should definitly work (most do 4.5 around the 1.3mark)

check this thread
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My System
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2500k @ 4.5/4ghz depending on weather and/or mood P67 SABERTOOTH B3 XFX HD5850 @ 820/1125 2x2gb g.skill ripjawsX 1600mhz 
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64gb Corsair SSD, 1tb Samsung F4 28" Hanns.G 1920x1200 Microsoft SideWinder X4 600w OCZ gameXstream2 
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post #5 of 15
Try 4.5~4.6 stable first so you'll get the idea of the voltage and heat.
Since until 4.6 or so, usually you don't have to mess with any voltages other than vcore.
After 4.6, you need to play with vtt/dram/PLL overvoltage/spread spectrum.
i5 2500K GTX570HD
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i5 2500K @ 4.8GHz 1.384V AsRock P67 Extreme4 (B3) UEFI3.19 EVGA GTX 570HD SC 930/1950 G.Skill RipjawsX DDR3 PC12800 2x4GB@1866 9-10-9-28 
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i5 2500K GTX570HD
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i5 2500K @ 4.8GHz 1.384V AsRock P67 Extreme4 (B3) UEFI3.19 EVGA GTX 570HD SC 930/1950 G.Skill RipjawsX DDR3 PC12800 2x4GB@1866 9-10-9-28 
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post #6 of 15
Jumping straight to 4.8Ghz is a good way to get frustrated fast.
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post #7 of 15
i had to play a little with cpu pll voltage and vccio(vtt) voltage to get my 2500k stable at anything above 4.7. maybe try that as well, could give you a stable clock with a lower vcore. i run my cpu pll at 1.89V

remember also that the maximum difference you should have between vccio(vtt) and the dram voltage is 0.5V. so increase your vtt to be no less then 0.5V lower then your dram voltage, this has also been important for me to stabilize at 5ghz.

are you using that spire gemini to cool this? watch your temps and good luck with your i5-endavour
i7-3930K
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i7-3930K
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Corsair 4x8gb @ 1600mhz Corsair Force GT 120GB Corsair h100 Windows 7 
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post #8 of 15
Quote:
Originally Posted by technot View Post

remember also that the maximum difference you should have between vccio(vtt) and the dram voltage is 0.5V. so increase your vtt to be no less then 0.5V lower then your dram voltage, this has also been important for me to stabilize at 5ghz.
That is actually not the case for SB.
You don't have to have that 0.5V on SB.
i5 2500K GTX570HD
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @ 4.8GHz 1.384V AsRock P67 Extreme4 (B3) UEFI3.19 EVGA GTX 570HD SC 930/1950 G.Skill RipjawsX DDR3 PC12800 2x4GB@1866 9-10-9-28 
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i5 2500K GTX570HD
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @ 4.8GHz 1.384V AsRock P67 Extreme4 (B3) UEFI3.19 EVGA GTX 570HD SC 930/1950 G.Skill RipjawsX DDR3 PC12800 2x4GB@1866 9-10-9-28 
Hard DriveOptical DriveCoolingOS
Crucial M4 SSD 128GB, 1x 500GB WD, 2x1TB WD Samsung DL DVD Writer Noctua NH-D14 Windows 7 Ultimate 64Bit SP1 
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Asus VG248QE Steelseries 6GV2 Rosewill Capstone 650W Corsair 600T White 
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post #9 of 15
Quote:
Originally Posted by Tunagoblin View Post
That is actually not the case for SB.
You don't have to have that 0.5V on SB.
are you sure? according to bit-tech.net's article on LGA1155 overclocking they say:
Quote:
Memory Voltage: As with LGA1366 and LGA1156 CPUs, keep this value to within 0.5V of the VCCIO voltage to prevent long term damage to the CPU. By default, this is 1.1V, which means the 1.65V used by previous Intel DDR3 memory is still acceptable. However, more recent memory will be rated at 1.5V (or even 1.35V if you choose a low-voltage kit). Increasing the VCCIO voltage obviously gives you more overhead on your memory voltage (remember, add +0.5V at most or risk damaging your CPU).
i7-3930K
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i7-3930K 4700mhz @ 1.376v sabertooth x79 Sapphire Radeon HD 6990 4GB Sapphire Radeon HD 6990 4GB 
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Corsair 4x8gb @ 1600mhz Corsair Force GT 120GB Corsair h100 Windows 7 
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i7-3930K
(14 items)
 
  
CPUMotherboardGraphicsGraphics
i7-3930K 4700mhz @ 1.376v sabertooth x79 Sapphire Radeon HD 6990 4GB Sapphire Radeon HD 6990 4GB 
RAMHard DriveCoolingOS
Corsair 4x8gb @ 1600mhz Corsair Force GT 120GB Corsair h100 Windows 7 
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Acer 24" BenQ 21.5" Logitech g15 Corsair HX 1050w 
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post #10 of 15
Quote:
Originally Posted by technot View Post
are you sure? according to bit-tech.net's article on LGA1155 overclocking they say:
Yes. I've read that same thing and thought same thing.
But someone here told me it's not the case for SB and gave me a link, too..
I can't find it now.. maybe I'll have to trace through my 400+posts...
i5 2500K GTX570HD
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @ 4.8GHz 1.384V AsRock P67 Extreme4 (B3) UEFI3.19 EVGA GTX 570HD SC 930/1950 G.Skill RipjawsX DDR3 PC12800 2x4GB@1866 9-10-9-28 
Hard DriveOptical DriveCoolingOS
Crucial M4 SSD 128GB, 1x 500GB WD, 2x1TB WD Samsung DL DVD Writer Noctua NH-D14 Windows 7 Ultimate 64Bit SP1 
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Asus VG248QE Steelseries 6GV2 Rosewill Capstone 650W Corsair 600T White 
MouseMouse Pad
Steelseries Sensei Steelseries Qck Mini 
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i5 2500K GTX570HD
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @ 4.8GHz 1.384V AsRock P67 Extreme4 (B3) UEFI3.19 EVGA GTX 570HD SC 930/1950 G.Skill RipjawsX DDR3 PC12800 2x4GB@1866 9-10-9-28 
Hard DriveOptical DriveCoolingOS
Crucial M4 SSD 128GB, 1x 500GB WD, 2x1TB WD Samsung DL DVD Writer Noctua NH-D14 Windows 7 Ultimate 64Bit SP1 
MonitorKeyboardPowerCase
Asus VG248QE Steelseries 6GV2 Rosewill Capstone 650W Corsair 600T White 
MouseMouse Pad
Steelseries Sensei Steelseries Qck Mini 
  hide details  
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