Haswell Overclock Thread

Martini1991 · 16 Jun 2013 at 20:04

GodAtum said:
This guy got a stable 4.8GHz @ 1.28: http://www.youtube.com/watch?v=ub6WnHmiIOs

I don't see any proper stability testing ?

shadow_boxer · 16 Jun 2013 at 20:42

Martini1991 said:
I don't see any proper stability testing ?

And it'd be a cherry picked processor supplied by Asus! :rolleyes:

flopper · 16 Jun 2013 at 22:22

shadow_boxer said:
And it'd be a cherry picked processor supplied by Asus!

yea

4.7ghz 1.27v adaptive
seems to work for me.

Martini1991 · 16 Jun 2013 at 23:39

flopper said:
yea

4.7ghz 1.27v adaptive
seems to work for me.

Doesn't mean they all will though.
We've quite clearly seen that Haswell is pretty inconsistent with clocking, I've been through 2 4670K's already and seen a MASSIVE difference between the two.

shadow_boxer · 17 Jun 2013 at 00:18

flopper said:
yea

4.7ghz 1.27v adaptive
seems to work for me.

Not sure if sarcastic?! :confused:

My 4770K does 4.7GHz at 1.275V but as Martini says Haswell is incredibly inconsistent. Even in the video he states Asus have tested around 550 CPU's and I'm pretty sure their not going to give him a duff one to do an overclocking video using their flagship ROG board. Asus themselves have found that about 50% will need at least 1.25V for 4.6GHz with only 10% even capable of 4.8GHz.

GodAtum · 17 Jun 2013 at 06:39

shadow_boxer said:
Not sure if sarcastic?!

My 4770K does 4.7GHz at 1.275V but as Martini says Haswell is incredibly inconsistent. Even in the video he states Asus have tested around 550 CPU's and I'm pretty sure their not going to give him a duff one to do an overclocking video using their flagship ROG board. Asus themselves have found that about 50% will need at least 1.25V for 4.6GHz with only 10% even capable of 4.8GHz.

i need a point of reference to compare. How did the 3770k cope with 4.8GHz?

Jokester · 17 Jun 2013 at 06:54

The percentages Asus mention seem to be roughly comparable to SB or IB can 't remember which one it was they published figures for.

flopper · 17 Jun 2013 at 08:59

Martini1991 said:
Doesn't mean they all will though.
We've quite clearly seen that Haswell is pretty inconsistent with clocking, I've been through 2 4670K's already and seen a MASSIVE difference between the two.

yea, got a good chip.
seen some that has to run 1.4 at 4.3ghz.

single stage cooling are likely the option for 5ghz running.

OLDPHART · 18 Jun 2013 at 11:02

lettuce said:
Jesus!, just done my first video encoding with this Haswell chip, on my old i7 920 Bloomfield a file size approx 80Gb would have taken 1hr 15 to encode, Haswell is reporting 21 minutes now!!!!

EDIT: Well it would have been quicker if my system didnt just Bluescreened!!!. I have stressed this OC with OCCT on LinPack with 90% memory usage and AVX LinPack Capable for 30 mins, then ran AIDA64 for 3hrs 40mins and it passed it fine!!!. Now after 4 minutes of encoding with RipBot the system crashes!!, the BSOD code is 0x124 according to WhoCrashed program

WoW, sorry to hear that lettuce, but in a way it's a good stability tester like running CineBench.

My 920:4.450 will pass CineBench but over that will fail.

Martini1991 · 18 Jun 2013 at 11:54

I was encoding last night, did an hour long encode with Handbrake, taking my CPU to 100%, perfectly stable at 4.6GHZ

OLDPHART · 18 Jun 2013 at 12:17

Martini1991 said:
I was encoding last night, did an hour long encode with Handbrake, taking my CPU to 100%, perfectly stable at 4.6GHZ

I take it you got you PC sorted?, nice one.

flopper · 19 Jun 2013 at 02:28

4.7ghz 1.28v
4670k

Martini1991 · 19 Jun 2013 at 07:39

OLDPHART said:
I take it you got you PC sorted?, nice one.

Nah, still running 1066MHZ RAM lol.
I need to change board.

dim_pwn · 19 Jun 2013 at 20:08

Martini1991 said:
Nah, still running 1066MHZ RAM lol.
I need to change board.

What board you on?

spankingtexan · 20 Jun 2013 at 10:52

Air conditioning for computers.

http://www.youtube.com/watch?v=Wf9N7qpwiO0

Should help keep your Haswell cool.

Nelly · 20 Jun 2013 at 11:25

Half the time people, and even reviews don't even test proper stability with the latest linpacks, using ones that are like 2-3 year old pushing just 60 Giga Flops.

Anyway, will build my rig tonight and test my 4770K hope it's a good one...

Pers · 21 Jun 2013 at 16:57

Finally got a chance to see how my 4770K performs. It wasn't happy at [email protected], got a 124 blue screen.

Currently running [email protected] and stable so far. Tried [email protected] and got a 124.

Temps with the H110 are pretty decent considering it's a hot day here, running fans at 1200rpm cos at 1500rpm they are loud

79c max on aida64 but running lower than that mainly.

Need to fine tune this a bit but happy with first time clock. The Hero is a very good board with lots of features.

lettuce · 22 Jun 2013 at 14:15

Ok after some research, it would appear its best not to touch the uncore value from the default 3.5ghz setting until you have a stable CPU clock and voltage OC. If your having trouble getting a stable OC with say 4.6Ghz with 1.240v also look at changing VRIN setting from auto to anything from 1.8 to 2.0, try 1.9v to start with and you should hopefully get it stable. Then after move onto upping the uncore to around 4ghz and the voltage setting you want to be looking for to get uncore stable is CPU Ring Bus voltage, and anything from 1.1 to 1.2 should help.

This is an awesome guide for any gigabyte users...

http://www.overclock.net/t/1401976/the-gigabyte-z87-haswell-overclocking-oc-guide

So for getting a stable CPU Clock you want to look at the vcore and vrin settings and then for uncore stability look at the CPU Ring Bus settins

BriT · 22 Jun 2013 at 14:25

Anyone got the 4770K under water? thinking of putting it under water to get better clocks.

spankingtexan · 22 Jun 2013 at 22:12

BriT said:
Anyone got the 4770K under water? thinking of putting it under water to get better clocks.

What temps do you get at 4.4Ghz, and what voltage?