Overclocking into the Haswell

Alrighty..As the story goes..At this moment I am running with 1.308V, now at 4.4Ghz. Grid 2 has been playing on Ultra for the last two and a half hours with no problem. Pretty nice it looks too. :D Which reminds me I would like to OC my 780 in a day Or so. Maybe in a few days :) Preferably when I'm satisfied with the stability of this chip..I was on another thread a few hours ago discussing a little about stabling out. But unfortunately I had to go out. I was advised to seek out my "cache multiplier" I have no idea where that is. I was told that the cache multiplier shouldn't need any more then "39" Also that was talked upon was the matter of "vring/cache voltage" Where would I find that in the Gigabyte Bios? And what should I raise that by?

Thanks.
 
no, i meant you shouldnt need more cache volts if its 39 ;)

ideally your multiplier for the cache should be within 300 mhz (3 x) of the cores. but 39 will do too.

no idea where it is in the giga bios though. for mine its rather obvious
 
basically. get the speed you are happy with, then try reducing the voltage until it crashes. then bump it up a notch. that way you get less heat and more lifespan
 
james_2k said:
basically. get the speed you are happy with, then try reducing the voltage until it crashes. then bump it up a notch. that way you get less heat and more lifespan
Click to expand...

In the meaning of reaching a limit were Vcore is concerned..What's the very top I should reach before I pull back? I do want to keep this chip for another, at the very most 3/4 years if I can help it
 
hnoestly im not overly sure. i wouldnt want to use more than 1.4

having said that, i had my 920 overvolted a lot and it was running strong years later!

think you will run into a temperature limit before the voltage one
 
At 4.4Ghz We'll see how it comes along :) I am running at 1.308v. The volts powering through the chip, will that effect the lifespan on the other components also, in the case? Or just the chip alone
 
Generally just the chip but OC isnt all about the highest its about the happy medium between heat and performance just go slow an dget to the point where your happy to run 24/7. But as above says chips are really like the lottery and the haswells do need more volts to get higher my 3570k is running 2.75v using dvid method to get 4.5ghz :)
 
I'll see how much v I need for 4.5, I haven't actually tried for it as I set myself a target for 4.4 and kept on lowering my v, I could try even lower cause I haven't actually hit a bsod yet.
 
Looking ahead of myself as always..I have been reading articles about "Skylake" I hope my chip is still a float by then
 
did you try the method of asus to determine how 'good' your cpu is?

de that I followed,
Now, I’ll share a secret imparted by the folks at ASUS who gave several reviewers some tips on overclocking the retail stepping Haswell chips: Set Vcore to 1.20 V. Set all cores to 46x (which would be a 4.6 GHz overclock), save & reboot. If the system boots past the UEFI and either begins to load or, ideally, makes it into the OS and is stable, you have a 50th percentile or greater chip on the Haswell overclocking-ability bell curve. If it won’t at least boot there and make it into the UEFI, you probably have less than a 50th percentile chip. You can expect chips in the lower 50th percentile to top out in the 4.4-4.5 GHz range at 1.25 V.

If your chip will boot at 4.6 GHz and 1.25 V, that’s very good. It means you have at least an average chip. If it will boot at 4.6 GHz and is stable there, then you may have an above average chip. The best chips will be able to do 4.8 GHz stable at 1.25 V. Our sample did 4.8 GHz, but at 1.3 V and on a custom water loop. Using 1.3 V will likely put a chip out of the air cooling / AIO water cooling thermal envelope. Temperatures in all of these scenarios, from the dog 4.3 GHz chips up to the good 4.8 GHz chips, will always be in the ~90°C range. That’s just the nature of Haswell. With the VRM on-die, think of Haswell as Ivy Bridge plus 10° C.

Regrettably, according to overclocking legend Andre Yang, there is no way to bin Haswell for extreme overclocking purposes on ambient cooling. You couldn’t do it with Ivy Bridge either. That ship sailed when Sandy Bridge, well, went under the bridge and continued down the river. If you’re binning for extreme purposes (of which the esteemed Mr. Yang has binned over 500 chips as of late April), you simply have to take them cold. However, for most people’s uses, the method above to bin on air is tried and true through the hundred plus they have binned at ASUS headquarters.

So, to sum up,

First check to see whether you have a chip on the upper end or the lower end of the Haswell bell curve.
There will be a large variation as you can see, from the 4.3 GHz dog up to the ideal 4.8 GHz chip, both at the same voltage and temperature.
Once you’ve checked on your chip, you have a general goal and can then set 1.25 V – manually, so it doesn’t overshoot like it would on Progressive voltage.
After setting 1.25 V, then raise the multiplier.
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Funny enough I was looking at that, James before I left for work this morning lol..She' came at 1.129V. Default settings. When I get back I'm going to check again.
 
james_2k said:
hehe ok, i have no idea what my stock vid was. it was overclocked from the first boot!
Click to expand...

As did I... Unfortunately I got a "dog of dogs" chip. 4.2Ghz is the most I can do stable, and I need 1.29v just for that.

Luckily I have a new chip incoming :D (I won the OcUK super pi 32m contest :) ), so hopefully this one is a little more capable! I'll find out soon I guess.
 
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