Originally Posted by steven88
Originally Posted by DoctorWorm
The USB 3.0 issue is a chipset issue, and it only affects USB 3 flash drives when the computer goes into sleep.Here's Asus's conclusive guide to overclocking
that people base their guides on. Asus has more testing than regular people overclocking, and they have released a conclusive guide in PDF form to describe the ideal settings for overclocking.
EDIT: they say it's not definitive, but it still contains the most research of any Haswell overclocking guide as of right now.
Thanks for the reply....so I can just go ahead and buy with confidence? I have Windows 8
I've been hesitant to buy Haswell because of the poor OC's and high temps people are getting....I honestly don't mind the high temps...like Ivy was high temps but it overclocks fairly well....but with Haswell, I am seeing folks getting 4.5 or less....which makes me ughhh
....my boy's personal rig has a 4670k and his max OC was 4.3ghz
Like with Ivy, you need to delid. Haswell gets hotter than Ivy for the same voltage due to the FIVR, but it's also better per clock too. I think it overclocks about the same as Ivy, just like with Ivy you are temp limited, so people tend to get lower overclocks because they are using the same cooling they had on Ivy.
So the answer is just get a better cooler. I literally just started playing around tonight with overclocks, with an H110 with 4x high speed yates and delid, I'm at email@example.com right now and I'm maxing at an ice cold 76C. I could probably push around 1.4-1.5v with the cooling I got, depending on how I stress test. Even though my chip is slightly below average (cant load os at firstname.lastname@example.org, failed at 10min aida64 1.25v), I could probably do like email@example.com, maybe even 5ghz. I know small fft/IBT will get you way hotter than other stress tests, but especially so on haswell since there's the weird auto-voltage increase issue (bug?) on AVX that's arguably not any indication of real system stability.
I don't think you really need to play with the other voltages on Haswell. If you got good enough cooling to do over 1.3v, than you may need to increase VRIN to keep it above .4-.5v from vcore (just set it to 1.9-2v and forget about it, people only play with it because dropping it might decrease temps just like messing with VTT/IMC/PLL on ivy did nothing but if you dropped them you could possibly reduce temps by 1-2C for insane undervolting if you were nitpicky/insane enough to care).
Then there's Vring + Uncore, which is basically Northbridge voltage/Frequency of old, I remember Phenom chips you tweaked those. They were pretty straightforward back then, I'm sure it isn't difficult with haswell, and I know a lot of boards will auto-tweak those for you to keep them in check. As I understand it, you could just set it to 1.15v and set Uncore = CPU - 300, and if you are nitpicky, you can try to make it CPU-100 and reduce uncore voltage as low as possible (again, extremely diminished returns).
When you get down to it, Haswell appears to give you more freedom - you can mess with Uncore, which gives increased performance gains like CPU Northbridge of old, and the voltage to stabilize it. You can VIN, which might be bad (the fivr, that is) for overclocking but it's great for power consumption and idling and really probably extends the life of your chip (and allows for higher overclocks/voltages?!?!?!). Then there's IMC voltage, but we always had that, increase for very high memory overclocks but most likely it won't help you and you can reduce it if you care to. And digital/analogue, which I'm pretty sure is actually just VTT voltages, which are usually auto increased but just need +.05v for very high ram overclocks, if you even care to go that far.
I mean it's just as complicated as ivy, you just gotta learn the names of everything that's all. Just make sure VIN is .5v above vcore, and put vring at 1.15, fire and forget. Just like with Ivy, all you do is change Vcore and Multi, but if you want, there's more you can tweak. In the case of Ivy, it was PLL, VTT, IMC voltages which reducing to extremes would maybe yield 1-3C combined. In the case of Haswell, not only can you get reduced temps, you can get performance gains with Vring/Uncore/Northbridge. It's only as complicated as you want to make it.
be aware I dont really know too much, i just started playing with overclocks a few hours ago, but this is my impressions so far.Edited by Belial - 7/19/13 at 2:41am