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My first overclock (i5 2500k) 4.5GHZ - How did i do?

post #1 of 7
Thread Starter 
Hey guys,




New to the forums and overclocking in general. Brother in law got me into doing more with my (fairly) new rig. I wanted to see what you thought of my first OC, i've been playing around with it trying to make it as stable as possible. After a 6 hour prime95 test, i'm assuming it is stable now (tonight will let it idle for 12 hours to make sure too).




First, here is my build:




CPU: i5 2500k

RAM: 8gb (2x4gb) corsair xms 3 1600 mhz (9-9-9-24) **(note: just bought some corsair vengeance to replace this)

MB: MSI p67a-gd65

CPU Cooler: Corsair H80 water cooler

PSU: Corsair 800W gamer series

GPU: Sparkle GTX 560 Ti

Case: Corsair 550d




Here are my OC settings:




4.5GHZ

Core voltage: 1.305V

DRAM Timing: Auto

DRAM Freq: 1600MHZ

CPU I/o Voltage: 1.05V

DRAM Voltage: 1.645V

System Agent Voltage: 0.925V

CPU PLL Voltage: 1.80V




System IDLE:

Average 35-38C (Enclosed in desk, with all 550d case sound dampening material on)



System LOAD 100% with PRIME95:

Average 62-67%C (Enclosed in desk, with all 550d case sound dampening material on)

---CORE VOLTAGE UNDER LOAD: Max of 1.352V



I do realize that the case/heat of the case may not have as much to do with temps since the corsair water cooler should keep this even. If i'm wrong here let me know.





Let me know what you think of my results... here is what I think:



1) I'm not EXTREMELY happy with the temperatures, but then again, the h80 cooler is quiet and power friendly (the h100 was just too much). And for a cooling kit, i guess that is ok.

2) I'd like to run core volts at 1.30V and CPU PLL Voltage at 1.75V, but when i do, I fail about 10 minutes into PRIME95. Is increasing CPU PPL just as bad as increasing core volts? Or should i try decreasing core volts to 1.30V and increasing CPU PPL voltage to like 1.85V?

3) I know nothing about overclocking RAM yet, although, from what i've read... on my board it won't support much more than what I have it set at.



Here is a pic of it constructed (one stupid yellow psu wire to board i couldn't hide, so mad about that... short by an inch to route through the back).



653
post #2 of 7
seems about right what everyone else is getting/tad higher on the vcore, as long as its stable it will be fine since its still in the safe zone, i would of swapped the psu around so its sucking air from out of the case (if you have a grilled section under the psu) then u would of been able to run the cable behind the tray
under the radar
(17 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k gigabyte ga-z68x-ud4-b3 MSI GTX 970 Gaming 4g 8gb corsair vengeance 
Hard DriveHard DriveHard DriveHard Drive
Plextor SSD samsung spinpoint f3 1TB samsung spinpoint f3 1TB Western Digital black 1TB 
CoolingOSMonitorKeyboard
silver arrow windows 7 ultimate 64bit samsung s23a950D Ducky shine 3 year of the snake 
PowerCaseMouseMouse Pad
Corsair AX1200 corsair 650D razer deathadder Steelseries QCK 
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asus xonar essence stx 
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under the radar
(17 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k gigabyte ga-z68x-ud4-b3 MSI GTX 970 Gaming 4g 8gb corsair vengeance 
Hard DriveHard DriveHard DriveHard Drive
Plextor SSD samsung spinpoint f3 1TB samsung spinpoint f3 1TB Western Digital black 1TB 
CoolingOSMonitorKeyboard
silver arrow windows 7 ultimate 64bit samsung s23a950D Ducky shine 3 year of the snake 
PowerCaseMouseMouse Pad
Corsair AX1200 corsair 650D razer deathadder Steelseries QCK 
Audio
asus xonar essence stx 
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post #3 of 7
Thread Starter 
Do you think i should lower vcore and increase cpu pll?
post #4 of 7
definitely flip your psu around so it is drawing in cool air from underneath. You can get an extension for that cpu power cable so it can reach:

http://www.amazon.com/CB-8P-8-Pin-Motherboard-Extension-Premium/dp/B0036ORCJY

nice set-up and oc

suggestions:

dram votls to 1.5v
pll to 1.709v
set dram timings manually (ie 9-9-9-24-1t)
Edited by mtbiker033 - 4/10/12 at 10:52am
Easy V3
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Easy V3
(17 items)
 
12 Pack
(15 items)
 
 
CPUMotherboardGraphicsRAM
i7-4820k Asus Rampage IV BE evga 1080ti FE w/ hybrid kit 16 GB G.Skill Trident X 2400mhz  
Hard DriveHard DriveOptical DriveCooling
Samsung 840 EVO 120gb Samsung 840 EVO 1TB Samsung Blu-ray Corsair H110 
OSMonitorKeyboardPower
windows 10 Asus PG278Q Ducky Shine 3 - blue led - cherry mx browns Seasonic Platinum-1000 
CaseMouseMouse PadAudio
Dimastech Easy V3 Mionix NAOS 8200 Mionix Ensis 320 titanium HD  
Other
audio technica ATH-A900X 
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post #5 of 7
Thread Starter 
I'm switching to 1.5v corsair vengeance 8gb (2x4gb)... ddr3 1600 9-9-9-24

I've been reading 1.65v ram is bad.



At that point, should i still run DRAM at 1.5V?

Also, what is the difference between T1 and T2 and what should i run the new RAM at?
post #6 of 7
Thread Starter 
Update:

Took mtbiker advice....

Here are my OC settings:




4.5GHZ

Core voltage: 1.30V

DRAM Timing: Auto

DRAM Freq: 1600MHZ

DRAM Voltage: 1.5V (1600mhz 9-9-9-24-1T)

CPU I/o Voltage: 1.05V

System Agent Voltage: 0.925V

CPU PLL Voltage: 1.75V




System IDLE:

Average 28-33C (Enclosed in desk, with all 550d case sound dampening material on)



System LOAD 100% with PRIME95:

Average 60-63%C (Enclosed in desk, with all 550d case sound dampening material on)

---CORE VOLTAGE UNDER LOAD: Max of 1.344V

So far 30 mins into this test.... seems to be stable so far, will leave prime on for a while and see what's up. Definately cooler and closer to what i want. (Thinking i will try to drop CPU PLL volts to 1.70 next).


I like the performance at 4.5ghz, i'm gonna stick here until i get a new graphics card (no point in pushing a CPU past 4.5ghz with an older GPU.... Looking at a gtx 680 after my wedding so i'll push to 4.8 then) --I tried 4.6ghz at these settings, instant BSOD.


338
post #7 of 7
Yeah either way with or with out an extension you should be able to flip that PSU and have the CPU 8pin still reach from behind your case and out the top left corner to the cpu power connector.
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