i5 2500k overclock on water

zx128k · 18 Aug 2013 at 01:47

Have got to 4.8GHz and temp are okay but need 1.45 volts of vcore to get there. PLL is 1.8 and VCCIO is 1.05volts. Ram is at the default of 1.65 volts.

Temps stay below 60 degrees in games. Is there any point in trying for 5GHz? Is there any other setting I could try to reduce vcore?

Justintime · 18 Aug 2013 at 01:55

Whats the load line calibration at? When under load what vcore is reported? If its significantly lower than 1.45v then you may just need to set the LLC higher to compensate for the droop, hence a lower vcore needed.
1.45v is a bit much imo. Would also knock the RAM down to 1.5-1.56v if it can, doubt 1.65 will do any damage to the IMC really but if it can go lower, why not.

zx128k · 18 Aug 2013 at 04:53

Load-line calibration = regular
VRM Frequency = 350
Phase control = extreme
Duty control = extreme
CPU current capability = 130%

CPU offset voltage = 0.160
DRAM voltage = 1.65
VCCIO = 1.1
CPU PPL Voltage = 1.9

Can try dropping Ram to 1.5 but it was 1.65 by default.

zx128k · 18 Aug 2013 at 04:57

Load line calibration is extreme when manually set to 1.45volts.

zx128k · 18 Aug 2013 at 19:20

Can get 4.9Ghz @ 1.49 vcore.

zx128k · 18 Aug 2013 at 23:17

Reducing the Ram voltage to 1.5volts causes BSOD.

zx128k · 19 Aug 2013 at 00:51

4.8GHz i5 2500k

Load-line calibration = extreme
VRM Frequency = 500
Phase control = extreme
Duty control = extreme
CPU current capability = 130%

CPU manual voltage = 1.44v
DRAM voltage = 1.65v
VCCIO = 1.15v
CPU PPL Voltage = 1.9

Avoid offset voltage if you value your cpu.

zx128k · 19 Aug 2013 at 01:44

4.8GHz i5 2500k

Load-line calibration = extreme
VRM Frequency = 500
Phase control = extreme
Duty control = extreme
CPU current capability = 130%

CPU manual voltage = 1.445v BSOD when testing.
DRAM voltage = 1.65v
VCCIO = 1.15v
CPU PPL Voltage = 1.9

zx128k · 19 Aug 2013 at 01:55

4.6GHz i5 2500k IBT standard 30 passes.

Load-line calibration = extreme
VRM Frequency = 500
Phase control = extreme
Duty control = extreme
CPU current capability = 130%

CPU manual voltage = 1.38v
DRAM voltage = 1.65v
VCCIO = 1.15v
CPU PPL Voltage = 1.9

8 Pack · 19 Aug 2013 at 09:37

To reduce Vcor and to go higher try tuning VCCIO and PLL. I doubt you will see 5g though but maybe 4.9 is a target. Leave the RAM volts 1.65v is fine!! I have never seen degradation of SB IMC with 1.85V+ so 1.65 is ok!!!!!!!

bilston · 20 Aug 2013 at 11:43

You can also try T.probe vs the extreme you have on the Duty Control now. Mine is more stable with T.Probe with lower volts at a certain speed

zx128k · 21 Aug 2013 at 00:38

Turning off Internal PLL overvoltage seems to help as well. Can boot with any multiplier as well with it off (tried up to 56x).

zx128k · 21 Aug 2013 at 00:39

bilston will give it a try.

zx128k · 24 Aug 2013 at 04:04

4.6GHz i5 2500k IBT standard 30 passes and maximum at 10 passes.

Internal PLL overvoltage = disabled
Load-line calibration = extreme
VRM Frequency = 500
Phase control = extreme
Duty control = extreme
CPU current capability = 140%

CPU manual voltage = 1.375v
DRAM voltage = 1.65v
VCCIO = 1.1v
CPU PPL Voltage = 1.45

zx128k · 24 Aug 2013 at 04:08

Hyper-v affects the way Bus Speed is reported in cpu-z. 100Mhz = 98Mhz with hyper-v installed.

zx128k · 24 Aug 2013 at 05:20

4.7GHz i5 2500k IBT standard 30 passes and maximum at 10 passes.

Internal PLL overvoltage = disabled
Load-line calibration = extreme
VRM Frequency = 500
Phase control = extreme
Duty control = extreme
CPU current capability = 140%

CPU manual voltage = 1.415v
DRAM voltage = 1.65v
VCCIO = 1.1v
CPU PPL Voltage = 1.45

zx128k · 21 Sep 2013 at 15:53

Prime 95 blend temps 58 - 65 degrees C. Running 1 hour.

Internal PLL overvoltage = enabled
Load-line calibration = extreme
VRM Frequency = 500
Phase control = extreme
Duty control = extreme
CPU current capability = 140%

CPU manual voltage = 1.5v (CPU-Z - 1.52v).
DRAM voltage = 1.65v
VCCIO = 1.1v
CPU PPL Voltage = 1.9

zx128k · 23 Sep 2013 at 13:11

Have gone for 4.7Ghz for now.

3t3P · 23 Sep 2013 at 21:56

I got my 2500k to 5Ghz but volts were too high.

I sometimes wonder if I can up it from 4.5 but think I wouldn't notice the difference in games anyway.

8 Pack · 24 Sep 2013 at 15:54

In gaming not a massive difference for sure!!

Seriously though forget Prime and IBT and just use your system with monitoring software running for temps. Prime etc just synthetic silicon bashers. No need!!!