Cannot Find a Stable i5 760 OC

[Paft]

PC completely freezes...I hear a continuous sort of buzz in the headphones and the power button does Nothing, not even holding it down for 10 seconds. I have to flip the PSU switch.

I can run games fine. It has NEVER actually frozen during a game, but in Windows doing typical stuff. Once a day or two.

It seems fine on stock, but I'll have to stay on stock for a week just to confirm and I will edit/bump.

Here are my settings anyway:



Operating System:
Microsoft Windows 8.1 Professional

PSU (cause of the problem?):
Gaming Series™ GS600 — 80 PLUS® Certified Power Supply 600W

CPU Type:
QuadCore Intel Core i5-760, 3833 MHz (20 x 192)

Motherboard Name:
Gigabyte GA-H55M-UD2H (2 PCI, 2 PCI-E x16, 4 DDR3 DIMM, Audio, Video, Gigabit LAN, IEEE-1394)

Motherboard Chipset:
Intel Ibex Peak H55, Intel Lynnfield


System Memory:
8151 MB (DDR3-1333 DDR3 SDRAM)

DIMM1:
Corsair XMS3 CMX4GX3M2A1600C9 2 GB DDR3-1333 DDR3 SDRAM (9-9-9-24 @ 666 MHz) (8-8-8-22 @ 592 MHz) (6-6-6-16 @ 444 MHz)
DIMM2:
Corsair XMS3 CMX4GX3M2A1600C9 2 GB DDR3-1333 DDR3 SDRAM (9-9-9-24 @ 666 MHz) (8-8-8-22 @ 592 MHz) (6-6-6-16 @ 444 MHz)
DIMM3:
Corsair XMS3 CMX4GX3M2A1600C9 2 GB DDR3-1333 DDR3 SDRAM (9-9-9-24 @ 666 MHz) (8-8-8-22 @ 592 MHz) (6-6-6-16 @ 444 MHz)
DIMM4:
Corsair XMS3 CMX4GX3M2A1600C9 2 GB DDR3-1333 DDR3 SDRAM (9-9-9-24 @ 666 MHz) (8-8-8-22 @ 592 MHz) (6-6-6-16 @ 444 MHz)

BIOS Type:
Award Modular (08/20/10)

GPU:
Gigabyte GTX 770 OC Windforce 3X

Storage:
Seagate 2TB
OCZ-VERTEX4 SSD 60GB
Seagate 600 Series SSD 480 GB

Tried "Performance Enhance" on both Standard and Turbo.

 

[wazza300]

1.376v seems an awfull lot for 3.8ghz~??? usually anywhere from 1.2v-1.35v for 3.8ghz it depends on each cpu

I would try a lower cpu multi and a higher bclk for 3.8ghz

maybe

181x21bclk (disable intel turbo boost)

and 8x memory multi = 1446mhz ram speed

set uncore frequency to 16x

set cpu voltage to normal in cpu voltage list

set dvid to +0.0750v

performance enhance set to standard

qpi/vtt set to 1.35v

cpu clock drive set to 800mv

enable all power saving apart from c1e,disable that and use balanced power profile in windows power saving options

then stress cpu in windows with prime95 and look in cpu-z to see what the load cpu voltage is and tell me

you might need more dvid or less idk yet

 

[pastymuncher]

1.376v is way too much for only 3.8Ghz on a 760. If it's any help here are my settings for my old 760. It was on a Asus P7P55D-E Pro so there will be different names for the settings compared to Gigabyte.

4Ghz

Vcore 1.2875v
CPU PLL 1.8625v
BCLK 20x200
IMC 1.16250v
PCH 1.0875v


4.2Ghz

Vcore 1.375v
CPU PLL 1.900v
BCLK 21x200
IMC 1.3125v
PCH 1.15v

As you can see there was a big increase in vcore for just a extra 200mhz so I ran it at 4Ghz for day to day use.

 

[Paft]

Oddly delayed reply!

I'm running at 4.01GHz ATM and seems stable. I left all the voltages on auto. Is that OK?

The Intel benchmark:
Stock 2.80GHz= 349
O.C. 4.01Ghz = 466

Am I missing something?

 

[Hotwired]

Bottom line is, are you getting any issues.

I have a longstanding overclock on my 750 bought at launch which needs 1.4v to be "stable in my book" at 4GHz with 16GB of memory.

But that may mean nothing to your rig and how you test.

You personally have to stress test it to your satisfaction because someone elses results can only be a guide.

 

[Paft]

I just assumed when overclocking you'd need to mess with voltages but all I did was change the Multiplier and BLCK. I thought more work would be needed.

When you say stable what are you referring to? In game FPS? I'm a ****ing noob-o-tron.

 

[Hotwired]

Well it really is that easy.

You go into a menu, change some settings and it's done.

Stable refers to your programs running without issues after you do that.

Nothing can totally check your computer is stable but there are specific programs which stress your computer to see if it starts chucking errors out (proving an unstable overclock).

Here's a guide: http://www.overclock.net/t/605848/i5-i7-lga-1156-overclocking-guide-to-4ghz

And these are voltage limits for 1156: http://www.overclock.net/t/585861/socket-1156-imc-above-1-21-volt

 

[C64]

Some chips just aren't that good voltage wise and will need 1.45 volts to hit 4-4.2 ghz IBT stable.

Don't worry so much about the voltage as long as temps are okay my i5 750 is still perfectly fine ran it for years at 1.43 volts for 4.1 ghz with speedstep on never seen above 65c thanks to noctua d14.Only time it's seen 80c is IBT stability test.

As long as your temps are okay say under 85c IBT load and under 70c gaming I'd crank the voltage to 1.45 or even 1.5 to see what mhz you can achieve then trim it down.

1.45 volts is definitely a safe 24/7 voltage.

Only tests worth bothering with are IBT and games imo.

On my msi p55 gd80 I found it way more stable to leave PLL VTT etc on auto only thing to touch is cpu vcore only leave all other voltage on auto find which vcore you need for desired clock and leave at that.

A chip that does 4.2ghz on 1.375 volts is rare and a good clocker most of these will require 1.45 volts to get those speeds.

 

[forteh]

Try taking two sticks of ram out, my i5 750 on an h55ud2h didn't like all 4 slots populated, with only 2 filled though it would sit at 4.2ghz ( 20x210) with 1.4v all day long. I was cooling with a thermalright truespirit 140bw without a case and temperatures didn't go much over 70℃.