Intel Haswell 4670k + 4770K Overclocking guide

[ProKoN]

also make sure you are on the latest bios.

[Wano97]

I've followed your first step which is increasing vrin/vccin to 2v, cpu voltage to 1.25, ram to 1333MHz and 1.5v but now my pc doesn't boot, it's stuck at the post screen thing

[ProKoN]

are you on the latest official bios

 

what are you cpu core and uncore multipliers set at?

 

try to increase core voltage or drop the cpu multiplier...read the entire guide! and watch the videos!

[Wano97]

are you on the latest official bios

what are you cpu core and uncore multipliers set at?

Latest official bios indeed. And I didn't touch the uncore multipliers, but they are at 38. Uncore freq is 3.4.

[ProKoN]

I've followed your first step which is increasing vrin/vccin to 2v, cpu voltage to 1.25, ram to 1333MHz and 1.5v but now my pc doesn't boot, it's stuck at the post screen thing

 

 

the guide starts by setting VCCIN to 1.9V

 

DO NOT SET YOU VRIN TO 2.0V

[Wano97]

the guide starts by setting VCCIN to 1.9V

DO NOT SET YOU VRIN TO 2.0V

Yeah I've also tried 1.9, still doesn't boot though

[Wano97]

the guide starts by setting VCCIN to 1.9V

DO NOT SET YOU VRIN TO 2.0V

I'm probably stupid... Does this help you?

[ProKoN]

I'm probably stupid... Does this help you?

yes it does thank you

 

i am the stupid one

 

you set the right value at 1.9V. forgot gigabyte labels vccin as vrin. most people including myself refer to vrin as CPU RING Voltage.

 

your temps were good at 1.4V.

 

try 1.3V and 44x.

 

hopefully we cant get a higher multi but start there

[Wano97]

yes it does thank you i am the stupid one you set the right value at 1.9V. forgot gigabyte labels vccin as vrin. most people including myself refer to vrin as CPU RING Voltage. your temps were good at 1.4V. try 1.3V and 44x. hopefully we cant get a higher multi but start there

Alright it booted up, but my pc bluescreened immediatly after boot. No worries I guess because it restarted itself and i'm logged in without any bluescreen (yet)

Edit: i ran the benchmark from intel, and my pc crashed. No idea what to do now

Edit 2: I raised my voltage to 1.31, I've benchmarked for much longer now, it still bluescreened after a while, raising to 1.32 now and I'll see what happens next

[ProKoN]

i also suggest setting the specified values to extreme

 

[Wano97]

Will do. I'ma keep raising my voltages until I get through the benchmark, after that I'll let it stress test

[ProKoN]

Will do. I'ma keep raising my voltages until I get through the benchmark, after that I'll let it stress test

 

 

sounds good

 

 

keep a close eye on the temps. we like to keep things below 85c for day to day operation, under 80c is more like it.

 

Im impressed by that little cooler you have.

[Wano97]

sounds good

 

 

keep a close eye on the temps. we like to keep things below 85c for day to day operation, under 80c is more like it.

 

Im impressed by that little cooler you have.

Well he's(/it's) flattered. My temps were 65 tops on 1.31 V

[ProKoN]

Well he's(/it's) flattered. My temps were 65 tops on 1.31 V

 

I can just imagine that little kuhler blushing right now lolz

[Wano97]

I can just imagine that little kuhler blushing right now lolz

Yeah true I believe it was spinning at 2500rpm, and that makes some noise... Any fan program to control system fans? I've used my gigabyte easytune until now for the fan control. And I got through the benchmark with 1.33v with highest temp at 72. I'ma raise to 1.34 and stress test over this night

[ProKoN]

for gigabyte set your fan curves up through the bios. in my opinion their software is rubbish.

 

I think its in the pc health status tab

[Wano97]

 

for gigabyte set your fan curves up through the bios. in my opinion their software is rubbish.

 

I think its in the pc health status tab

 

I guess I'll figure the fans out later. I have no idea how to know the speed of it like that... No idea how fast 1.50PWM/centigrade is...

Is it normal that my cpu temps go from 60-75 all the time?

[ProKoN]

 

 

 

I guess I'll figure the fans out later. I have no idea how to know the speed of it like that... No idea how fast 1.50PWM/centigrade is...

Is it normal that my cpu temps go from 60-75 all the time?

 

 

yes haswell temps are jumpy thats normal. just keep an eye on maximum temps its normal to jump around

[Wano97]

yes haswell temps are jumpy thats normal. just keep an eye on maximum temps its normal to jump around

I hope it won't do any harm if I sleep during a 8h stress test

[ProKoN]

I hope it won't do any harm if I sleep during a 8h stress test

 

none what so ever

 

i have woken up countless times to BSOD's

 

typically if you can run 5-6 cinebench runs back to back your going to be fairly stable.

[Wano97]

none what so ever

 

i have woken up countless times to BSOD's

 

typically if you can run 5-6 cinebench runs back to back your going to be fairly stable.

- Any idea why my cpu utilization is jumpy sometimes? It goes to about 60 percent sometimes and goes back to 99... This is only in benchmarks! During stress tests the CPU utilization sticks above 95%

- Why do I have to use such high voltages to achieve 4.4GHz stability? And other people don't

- I cannot change the CPU ring frequency, no matter how hard I search... I've gone through my whole BIOS and also looked at the intel extreme tuning utility, I can't seem to find it. Do you think there's any chance that it's just on a 1:1 ratio by default in this situation and it changes accordingly to the CPU frequency and cpu vcore?

- If I don't have 8 hours to stress test every time, can I stress test for 1 hour at a certain voltage, and if it's stable for this full 1 hour, increase my vcore by 1mV to increase stability?

 

Also this is something I've found, would you recommend this? (Found it on another forum): Folks with Haswell....DO NOT GET DISCOURAGED! Most are stuck at 4.2-4.3ghz because they never touched their UNCORE. Once you lower your uncore down to 34x or 35x, you can easily increase your multiplier headroom. Sometimes by even 4.6ghz....thats an increase of 400mhz over an initial 4.2ghz....which is a HUGE bump in performance..... compared to the 1% loss in performance by lowering uncore down to 34x or 35x. CORE IS STILL KING. Oh yeah and please....if you have a 2400mhz memory kit...DO NOT run 2400mhz initially. Lower it to 1600mhz and try to see the max potential of the CPU, before raising the memory back to 2400mhz. Most CPUs cannot hold a high overclock (4.7ghz) with a high memory speed (2400mhz)

I have no doubt in my mind that most Haswell samples can run approx 4.5ghz, by playing with these new settings we weren't familiar with on Sandy/Ivy. Good luck 

[ProKoN]

- Any idea why my cpu utilization is jumpy sometimes? It goes to about 60 percent sometimes and goes back to 99... This is only in benchmarks! During stress tests the CPU utilization sticks above 95%

- Why do I have to use such high voltages to achieve 4.4GHz stability? And other people don't

- I cannot change the CPU ring frequency, no matter how hard I search... I've gone through my whole BIOS and also looked at the intel extreme tuning utility, I can't seem to find it. Do you think there's any chance that it's just on a 1:1 ratio by default in this situation and it changes accordingly to the CPU frequency and cpu vcore?

- If I don't have 8 hours to stress test every time, can I stress test for 1 hour at a certain voltage, and if it's stable for this full 1 hour, increase my vcore by 1mV to increase stability?

 

Also this is something I've found, would you recommend this? (Found it on another forum): Folks with Haswell....DO NOT GET DISCOURAGED! Most are stuck at 4.2-4.3ghz because they never touched their UNCORE. Once you lower your uncore down to 34x or 35x, you can easily increase your multiplier headroom. Sometimes by even 4.6ghz....thats an increase of 400mhz over an initial 4.2ghz....which is a HUGE bump in performance..... compared to the 1% loss in performance by lowering uncore down to 34x or 35x. CORE IS STILL KING. Oh yeah and please....if you have a 2400mhz memory kit...DO NOT run 2400mhz initially. Lower it to 1600mhz and try to see the max potential of the CPU, before raising the memory back to 2400mhz. Most CPUs cannot hold a high overclock (4.7ghz) with a high memory speed (2400mhz)

I have no doubt in my mind that most Haswell samples can run approx 4.5ghz, by playing with these new settings we weren't familiar with on Sandy/Ivy. Good luck 

- cpu utilization is application dependent

- lol all chips overclock different. 4.4GHz is a good overclock. sorry bout your luck with high volts . its all a matter of luck!

- your ring ratio certainly is not 1:1 by default. I will send you a pic later. Im using a ud5h.

- if you dont have time to stress test just run cinebench 5-6 times. stress test when your sleeping!

 

-dropping the uncore will help with stability at the cost of performance but it is true for the most part, core is king. its when your uncore is 3000MHz or lower do you take a performance hit.

 

 

-YES you can run high frequency ram on a haswell chip that has been aggressively overclocked, I run my memory at 2666 stable for 18 hours stress test!

[Wano97]

- cpu utilization is application dependent

- lol all chips overclock different. 4.4GHz is a good overclock. sorry bout your luck with high volts . its all a matter of luck!

- your ring ratio certainly is not 1:1 by default. I will send you a pic later. Im using a ud5h.

- if you dont have time to stress test just run cinebench 5-6 times. stress test when your sleeping!

 

-dropping the uncore will help with stability at the cost of performance but it is true for the most part, core is king. its when your uncore is 3000MHz or lower do you take a performance hit.

 

 

-YES you can run high frequency ram on a haswell chip that has been aggressively overclocked, I run my memory at 2666 stable for 18 hours stress test!

When I stress test it at a certain voltage, it's stable, but when I start folding my PC bluescreens after a while

[theawesomejman]

Can I/ should I update the BIOS as soon as I get my pc? Without ever installing windows or anything, on another pc i download the bios binary and good to go?

 

using Q-Flash on a gigabyte mobo...

[ProKoN]

Folding is a great way to stress test

Dont update your bios unless your having issues.