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Broadwell-E thread - Page 326

post #3251 of 7252
Quote:
Originally Posted by DarkIdeals View Post

That's a quite good sample, but nothing is wrong with it. My 6800K i used before switching to a 6950X could hit 4.4ghz at 1.3v and could hit 4.5ghz at around 1.4v.

So yours appears to be pretty similar to mine that i had which was one of the best of the best (bought it as a 4.4ghz bin from silicon lottery, he said it was one of the best he had seen so far) considering you're "only" using a Kraken X61 cooler and i'm using a full water cooling setup with both a 480mm and a 360mm radiator, i imagine if you were to move up to a bigger cooling setup you would easily be able to get the same 4.4ghz at 1.30v that i could.

Custom loop is in the future. As of right now, the Kraken actually keeps it pretty cool. I'll see how it handles upping the vcore and clock speed. In all honesty, this is my first ever build and I'm really happy with it. Not completely new to overclocking though as I used to overclock my phone's processor on my previous phones.
Edited by JoshM813 - 10/3/16 at 7:42pm
post #3252 of 7252
So have any of you guys had experience with using a water chiller on Broadwell-E? (specifically 6900K and 6950X's that put out more heat etc..?)

I've managed to get the cinebench temps on my rig down to ~72-75C on the hotter cores (Realbench seems to stay around the same, not going over maybe ~77-78C or so) and i'm about to add my GPU's to the loop and put my 420 rad back in the compensate for that etc.. but i'm kinda considering picking up a decent chiller like the Hailea 790 watt 1/2HP one.

I know JPM has his Koolance 800 watt one; i'm kinda curious of how much of an improvement a decent chiller would provide over standard custom water in my system. Trying to decide between enhancing my water loop with more rads etc.. or just getting a chiller. I currently have an XSPC EX 480mm rad, a Black Ice GTX 360mm rad, and the EK XTC 420mm rad that i'm about to stick back in the loop; but i'm considering either swapping the 420 rad for a new 560, or maybe getting a MO RA3 or something: or just getting a chiller like i said. Not really sure if it'd be worth if for me though...
Edited by DarkIdeals - 10/3/16 at 8:44pm
 
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post #3253 of 7252
can someone help me out, which is the best benchmark software to check the 8/12 hour stability of my CPU overclock ? previously on Skylake and ivy bridge i used Prime95
post #3254 of 7252
Quote:
Originally Posted by SauronTheGreat View Post

can someone help me out, which is the best benchmark software to check the 8/12 hour stability of my CPU overclock ? previously on Skylake and ivy bridge i used Prime95

Realbench can run for up to 8 hours and is a great stability test imo (it runs multipler rendering, editing, encoding etc.. heavy load programs simultaneously to put a quite heavy load on your CPU so it pegs at 100% even on a 6950X; but it doesn't cause the same insane heat that Prim95 AVX w/ small FFT etc.. would cause)

OCCT is pretty popular nowadays too but as far as i know it's just a modified version of Prime95.

Overall for a 6850K i'd recommend trying Realbench personally.
 
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post #3255 of 7252
Quote:
Originally Posted by DarkIdeals View Post

So have any of you guys had experience with using a water chiller on Broadwell-E? (specifically 6900K and 6950X's that put out more heat etc..?)

I've managed to get the cinebench temps on my rig down to ~72-75C on the hotter cores (Realbench seems to stay around the same, not going over maybe ~77-78C or so) and i'm about to add my GPU's to the loop and put my 420 rad back in the compensate for that etc.. but i'm kinda considering picking up a decent chiller like the Hailea 790 watt 1/2HP one.

I know JPM has his Koolance 800 watt one; i'm kinda curious of how much of an improvement a decent chiller would provide over standard custom water in my system. Trying to decide between enhancing my water loop with more rads etc.. or just getting a chiller. I currently have an XSPC EX 480mm rad, a Black Ice GTX 360mm rad, and the EK XTC 420mm rad that i'm about to stick back in the loop; but i'm considering either swapping the 420 rad for a new 560, or maybe getting a MO RA3 or something: or just getting a chiller like i said. Not really sure if it'd be worth if for me though...

I think you could probably gain enough to warrant adding rad space, in truth. Also how would you rig the chiller up to the desk build?
post #3256 of 7252
Quote:
Originally Posted by DarkIdeals View Post

So have any of you guys had experience with using a water chiller on Broadwell-E? (specifically 6900K and 6950X's that put out more heat etc..?)

I've managed to get the cinebench temps on my rig down to ~72-75C on the hotter cores (Realbench seems to stay around the same, not going over maybe ~77-78C or so) and i'm about to add my GPU's to the loop and put my 420 rad back in the compensate for that etc.. but i'm kinda considering picking up a decent chiller like the Hailea 790 watt 1/2HP one.

I know JPM has his Koolance 800 watt one; i'm kinda curious of how much of an improvement a decent chiller would provide over standard custom water in my system. Trying to decide between enhancing my water loop with more rads etc.. or just getting a chiller. I currently have an XSPC EX 480mm rad, a Black Ice GTX 360mm rad, and the EK XTC 420mm rad that i'm about to stick back in the loop; but i'm considering either swapping the 420 rad for a new 560, or maybe getting a MO RA3 or something: or just getting a chiller like i said. Not really sure if it'd be worth if for me though...

RealBench is really a good test for overall stability.
OCCT is really to be used if you want to reach "Golden" stability without generating power and heat as with P95 v28.xx.
OCCT is much more tough to pass than Realbench.
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post #3257 of 7252
I have the Hailea, use it for benching only not for daily use, no point in that, if you run it in series with rads you turn the fans off otherwise it will increase the temp, it is really the next step from rads on the way to SS and more extreme, as an example you may get another 100mhz with chiller, another 100mhz with SS = better scores on the BOT but for daily use not practical, even if you have the floor space it adds the noise of a refrigeration unit. If your semi serious about benching then it is the next step in a long expensive journey, I used a rad in an ice chest before I got the chiller, GPU's and CPU's created more heat a couple generations ago, Keepler and especially Pascal reduced the need, less heat produced and less headroom to overclock, keeping ambient temps down is a better solution, binning CPU's or buying a binned CPU can be a big benefit, chiller or not as you reach the limit of what your silicon can do before what your cooling can do
post #3258 of 7252
So this happened, finally I guess.

After rocking the 6800K for a couple weeks at 4.5ghz and 1.33v some funky stuff happened. I swapped soundcards to test another one out, and I was getting bluescreens in game (cs:go). I thought huh, weird. Did all drivers and whatnot, seemed to do nothing.

I lowered my OC to 4.4ghz, cache 3.7ghz, and ram to 3000. Stable.... Weird, right?

I raised JUST my cpu to 4.5ghz and same symptoms.... I guess the two week burn in finally happened.... Considering it ran OCCT for 6 hours straight one night at those settings.




Now i'm at 1.35Vcore 4.5ghz though and I have no problem rolleyes.gif
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post #3259 of 7252
Not weird. Not stable. wink.gif
post #3260 of 7252
Quote:
Originally Posted by Silent Scone View Post

Not weird. Not stable. wink.gif

I agree. This also is why I always add a few mv on top after I'm done stressing to help prevent being on just the "edge of stability." I would bump it up to 1.375V @pillowsack.
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