Been a few years since I overclocked.

Tephnos

Tephnos

Tephnos

Soldato
Joined
20 May 2011
Posts
6,077
Location
Aberdeen, Scotland
Hey guys,

Thinking of buying an:
  • ASUS X-99S
  • 5820k
  • 2400mhz Crucial Ballistic 16GB Ram


Last time I overclocked was the i5 2500k years ago, and that was a case of set the multiplier, Prime it and be done. Should I overclock the RAM? I heard it can hit 12-12-12 timings at 2666mhz. How worth it is it really, beyond superficial benchmarks?

Following that, what kind of clocks can I expect from the 5820k? Is 4.5Ghz still easily possible? I'm aware the temps will probably be higher, under my h100i my 2500k hits high 40s, very rarely the low 50s when stressing it.

Also, I heard Prime stressing is bad for Haswell chips?
 
Tephnos said:
Hey guys,

Thinking of buying an:
  • ASUS X-99S
  • 5820k
  • 2400mhz Crucial Ballistic 16GB Ram


Last time I overclocked was the i5 2500k years ago, and that was a case of set the multiplier, Prime it and be done. Should I overclock the RAM? I heard it can hit 12-12-12 timings at 2666mhz. How worth it is it really, beyond superficial benchmarks?

Following that, what kind of clocks can I expect from the 5820k? Is 4.5Ghz still easily possible? I'm aware the temps will probably be higher, under my h100i my 2500k hits high 40s, very rarely the low 50s when stressing it.

Also, I heard Prime stressing is bad for Haswell chips?
Click to expand...
you can still overclock with the multiplier if you want, however some xmp profiles set the bclk to 125 to get the ram to the right speed. as for the ram overclocking, you can do it, but you won't see any difference in normal use, buut i would still spend a few mins to see if you can get anything out of it as it is free performance, even if its only a tiny bit. under a h100i you should be able to get you 5820k from 4.4-4.6ghz, but it will probably be running high 70's to mid 80's depending on the voltage, but that is fine. as for stress testing, you just set the cpu voltage so that it is fixed, otherwise it will overvolt it too much. then you can run whatever stress test you want.
 
Use Real Bench to test stability or the Intel Certified XTU.

Even better just use the PC for the applicatiuons you need it to be stable for.

For 2400 mems you are fine on 100 strap and using multiplier OC.
 
Cheers guys,

Main reason I wanted to OC the ram was mainly because 12-12-12 timings sounded fairly good over 16!

So I'm guessing I was right in that prime stressing is really bad for Haswell then? If that's all good then hopefully I can get a stable 4.5. I've kinda set that as my 'It MUST be that' multiplier, don't care for any lower or higher. It's a nice number. :p

70s to 80s under water eh? That's gonna be something to me. Is that purely under stressing? Seems really high on water but I guess hex core chips will never really OC as well as the quads? I have my 2500k on variable voltage and the highest I see it at x45 is about 1.33/4 volts or so, when it hits 52c maximum.
 
I'm running a 5820k @ 4.5GHz under a Corsair H100 (not even the 100i) and my temps didn't go past 65C (think one core momentarily hit 64'C) in an 8 hour stress.
1h4fqQr.png

They averaged around 55'C -- so temps shouldn't really be any problem for you. As for your OC, I started with 45x multi @ 1.3v and worked the voltage down from there - settled at 1.265v so that might be a good place to start :)
 
Ah, that's absolutely perfect! Just what I was looking for, although 4.5 @ 1.278? Sounds like an excellent chip. No way I'm getting that lucky.

Did you OC your RAM or just left it stock and multiplier OC?
 
got everything set up.

Tried a modest x45 multi with 1.3 volts. Stressed it but would crash. Figured out the Mobo version was from 2014 and there was an update from a couple of months ago that added compatibility with 16GB DDR4, so I got that.

Still BSODing with 0x0124 uncorrectable error. I'd be shocked if the 5820k couldn't hit 4.5 with that vcore, so I'm first trying resetting the CMOS and memtesting the RAM just in case it is that.

Damn. (Also disabled turbo and c-state undervolting just in case it was that, no dice)
 
Memtest completed fine, stressing the PC on stock clocks now.

Looks like my 5820k is just a bad one.
 
You must log in or register to reply here.
Back
Top Bottom