Intel's 8th Generation Core Family - Coffee Lake (LGA 1151, 6C/12T)

Where do you expect Core i7-8700K's Turbo to land?

  • 3.8/3.9 GHz

    Votes: 0 0.0%

  • 4.0/4.1 GHz

    Votes: 3 23.1%

  • 4.2/4.3 GHz

    Votes: 6 46.2%

  • 4.4/4.5 GHz

    Votes: 3 23.1%

  • 4.6/4.7 GHz

    Votes: 1 7.7%
  • Total voters
    13
  • Poll closed .
So go the other way, take control of your voltages and see how far you can undervolt it and stay stable. You might reduce temps enough to hold a higher clock when all cores are loaded.
 
Hagrid said:
Yeah, he could of used some of the money to learn patience..... :)

1.41 is too high isn't it for 24/7?
Click to expand...


What Juan said, it is for people that want to enter the world of professional overclocking, makes me laugh, I did that phase then it got stupid so I took up paintballing, that got old so I took up airsoft. I don't think I have overclocked my CPU's in like 7 years now, this while still rocking 300-400K kills in battlefield.

Oh please sir can I be a professional overclocker.
 
Anyone know if someone tried to go all in / hands-on testing using AsRock built-in BCLK hyper engine II to try OC 8700 or 8400 yet? Downgrading to oldest bios if it doesn't work etc to get past any Intel set limitations. I'm all set on a Z370 Taichi board in either case and if this kind of OC would work I'd happily pick up a 8700 non-k which is significantly cheaper and easier to buy.
 
Does anyone with a Z370 have a regular 2.5 or 3.5" HDD in Windows 10 they want to SPIN THE DAMN THING DOWN?

Mine is in there for backup purposes only, I literally write about 2TB a week on Sundays and then prefer it to spin down.
I've even gone as far as to remove the drive letter and still Windows 10 refuses to spin the disk down.

Any idea? Asrock Z370 ITX AC.

(yes, of course power settings configured)
 
oleNBR said:
lmao 5ghz 1.41v

i thought 1.35v for 5ghz was already average..

looking for 1.3v for 5.1ghz if possible, super binned thanks babe
Click to expand...

drescherjm said:
But it has silver TIM. Wow!

On a serious note, I would have expected them to not waste silver tim on it when they realized it was not a good overclock..
Click to expand...

It is a delidded chip with liquid metal and a silver IHS. The tempts are much lower than for stock chips: 18--32 ºC lower. So you cannot compare their voltages with the voltages of stock chips directly.
 
OrangeKhrush said:
What Juan said, it is for people that want to enter the world of professional overclocking, makes me laugh, I did that phase then it got stupid so I took up paintballing, that got old so I took up airsoft.
Click to expand...

It is not what "Juan said". It is what the site (and der8auer) claim:

The Ultra Edition is aimed at OC enthusiasts who are on the hunt for records and want to compete with the best overclockers!
Click to expand...
 
Someone posted a standard retail chip doing 5ghz with less voltage needed. It's all misrepresentation and touting, that said I don't feel sorry for anyone buying into it.
 
juanrga said:
It is a delidded chip with liquid metal and a silver IHS. The tempts are much lower than for stock chips: 18--32 ºC lower. So you cannot compare their voltages with the voltages of stock chips directly.
Click to expand...

Why not, you are putting the voltage through the motherboard, changing conducting agent isn't going to affect the voltage in any way, it will just help heat conductivity, but in 2017 to be talking about that issues is quite sad.
 
It's literally twice the cost of a retail 8700K. You're better off buying 2 stock chips, keeping the better one and selling/returning the other. Then you're more likely to get a better chip than CaseKing for half the cost.

It will run 20C hotter but who cares since the CaseKing chips don't have OC headroom anyway. Who wouldn't trade 20C for an extra 100-200 MHz?! Duh!
 
TaintedSquirrel said:
It's literally twice the cost of a retail 8700K. You're better off buying 2 stock chips, keeping the better one and selling/returning the other. Then you're more likely to get a better chip than CaseKing for half the cost.

It will run 20C hotter but who cares since the CaseKing chips don't have OC headroom anyway. Who wouldn't trade 20C for an extra 100-200 MHz?! Duh!
Click to expand...

20 degrees is a lot to save on though, especially in summer, space heaters in summer aren't fun
 
OrangeKhrush said:
20 degrees is a lot to save on though, especially in summer, space heaters in summer aren't fun
Click to expand...
Yeah but the chip is also taking 1.4V for 5 GHz. Any chip that can do 5 GHz on 1.35V or less is going to significantly close that gap.
The delid is balancing out the shitty bin. It makes no sense. Like I said they are worth MSRP or less, not double the cost. CaseKing is just slightly "fixing" crappy CPUs.
 
TaintedSquirrel said:
Yeah but the chip is also taking 1.4V for 5 GHz. Any chip that can do 5 GHz on 1.35V or less is going to significantly close that gap.
The delid is balancing out the shitty bin. It makes no sense. Like I said they are worth MSRP or less, not double the cost. CaseKing is just slightly "fixing" crappy CPUs.
Click to expand...

If someone pays that then they deserve their outcome, I just find the idea of delidding in 2017 so silly, very very silly.
 
OrangeKhrush said:
Why not, you are putting the voltage through the motherboard, changing conducting agent isn't going to affect the voltage in any way, it will just help heat conductivity, but in 2017 to be talking about that issues is quite sad.
Click to expand...

Electromigraiton and other stuff depends exponentially on temperature. So a given voltage can be dangerous at a given temperature and safe at another. You cannot compare the voltages at different temperatures directly. You have to factor the 18--32 ºC delta, first.
 
Revenant_Knight said:
Just built my SFF i7-8700 build. Bad news for anyone who uses the L9I. It's simply not a powerful enough cooler to not throttle with this CPU.

I've underclocked to 4.0GHZ ACT and it seems to have stabilized in the 80C range. Still, I need to find a better solution.
Click to expand...

I have the same cooler for my Node 202 build and when I tried it on my 6700K, even undervolted to something like 1.15 and 4.0 GHz on all cores, I wasn't happy with the temps either. Wonder if there's a tdp limiter on z170/z270 to turn your 91W unlocked cpu into locked 65W cpu. For Node 202 there's a problem with finding a compatible and easy to install cooler enough for an i7 cpu.
 
Raendor said:
I have the same cooler for my Node 202 build and when I tried it on my 6700K, even undervolted to something like 1.15 and 4.0 GHz on all cores, I wasn't happy with the temps either. Wonder if there's a tdp limiter on z170/z270 to turn your 91W unlocked cpu into locked 65W cpu. For Node 202 there's a problem with finding a compatible and easy to install cooler enough for an i7 cpu.
Click to expand...


I have the 8700 not 8700K. Rated for 65w.

That said there are long term and short term wattage limits you can mess with in the Bios. I can get close to 4ghz 6 cores at 75watts long term with a L9i. That said, it's still in the mid 80 range temp wise.
 
Revenant_Knight said:
I have the 8700 not 8700K. Rated for 65w.

That said there are long term and short term wattage limits you can mess with in the Bios. I can get close to 4ghz 6 cores at 75watts long term with a L9i. That said, it's still in the mid 80 range temp wise.
Click to expand...

I know, that's why highlighted K in my post, just surprised you're not able to tame a non-k cpu rated at 65w, when this cooler is supposed to be alright for these models. Maybe delid with some liquid metal between die and IHS and repaste will help? That said though, delid didn't help much for temps with L9i in my case.
 
Im using an ek mx block on my 8700k. It strips the heat hella fast but at 5.1ghz and 5.1 im hitting 75 sustained. Ive yet to thermal throttle.

So a good water block and custom loop can yield acceptable performance with oit popping the lid. But i run it at 4.8 all core and its very manageable temp so far.
 
tangoseal said:
Im using an ek mx block on my 8700k. It strips the heat hella fast but at 5.1ghz and 5.1 im hitting 75 sustained. Ive yet to thermal throttle.

So a good water block and custom loop can yield acceptable performance with oit popping the lid. But i run it at 4.8 all core and its very manageable temp so far.
Click to expand...
What volts do you need for 4.8? I was stable and benchmarking at 1.265 but needed a full 1.28 to make it prime95 stable.
 
Raendor said:
I know, that's why highlighted K in my post, just surprised you're not able to tame a non-k cpu rated at 65w, when this cooler is supposed to be alright for these models. Maybe delid with some liquid metal between die and IHS and repaste will help? That said though, delid didn't help much for temps with L9i in my case.
Click to expand...


Missed the highlighted K. Sorry.

Truth is that it's not a 65W part. It can be, but you'll probably not see the full 4.3ghz in a SFF rig like the Dan Case I'm using with L9i. If I put it in an NCASE M1 with a bigger cooler, I'm fairly certain it would be ok.
 
Cali3350 said:
What volts do you need for 4.8? I was stable and benchmarking at 1.265 but needed a full 1.28 to make it prime95 stable.
Click to expand...

About the same. 5.0 stable between 1.26 and 1.28. Everything is stable. Even p95. IBT and cpiz stress test also stable. Also my ddr4 3600 is stable as well. 5.1 i have to go abut 1.35 ish. 5.2 is 1.4 but thats waaaay too mich heat and it throttles. But It wont throttle at 5.0 and below. And 4.8 is my lock in speed. I may do 2 cores at 5.1 4 at 5.0 and 6 at 4.7 for 24/7. I also use speed step because I like the savings if power heat and wear and tear when it doesnt need full hammer performance like watching videos or minecraft etc...
 
I tried to get to 5.0 but couldn't. The highest voltage I tried was 1.35 but the temperature got to 99 on AIDA64 stability test and vcore showed 1.394 on HWmonitor. After 3 minutes the computer freeze up. I was able to overclock to 4.8 using 1.2875 volts and it was stable but I only ran AIDA64 for 10 minutes. So looks like I didn't win the silicon lottery.
 
Last edited:
juanrga said:
Electromigraiton and other stuff depends exponentially on temperature. So a given voltage can be dangerous at a given temperature and safe at another. You cannot compare the voltages at different temperatures directly. You have to factor the 18--32 ºC delta, first.
Click to expand...

will intel 8 cores be 14nm++ or 10nm+

10nm+ lower the temp, even better
 
Really want to pull the trigger on the 8700, but can't justify the $700 update to my Ivy 3570 setup that isn't really slowing me down...
 
tangoseal said:
About the same. 5.0 stable between 1.26 and 1.28. Everything is stable. Even p95. IBT and cpiz stress test also stable. Also my ddr4 3600 is stable as well. 5.1 i have to go abut 1.35 ish. 5.2 is 1.4 but thats waaaay too mich heat and it throttles. But It wont throttle at 5.0 and below. And 4.8 is my lock in speed. I may do 2 cores at 5.1 4 at 5.0 and 6 at 4.7 for 24/7. I also use speed step because I like the savings if power heat and wear and tear when it doesnt need full hammer performance like watching videos or minecraft etc...
Click to expand...
1911Shootist said:
Really want to pull the trigger on the 8700, but can't justify the $700 update to my Ivy 3570 setup that isn't really slowing me down...
Click to expand...

I hear ya there in a holding pattern with 3570k also.
1911Shootist said:
8700 (non-k) in stock at Newegg
https://www.newegg.com/Product/Prod...19117826&cm_re=i7_8700-_-19-117-826-_-Product
Click to expand...
Wow raised it again, just keeps going up
 
sorry for all my cell phone typos I constantly make. I do much posting from my cracked screen phone I am too lazy to replace.
 
Revenant_Knight said:
Yes Non-k.


A bit of adjustments in the BIOS and I can play BF1 at 4.3GHZ all cores. Stress tests still throttle to 3.8ghz.
Click to expand...
I’m thinking of getting this chip to go into my Sentry that’s just arrived but waiting to see others personal interaction with it in terms of thermals particularly with the noctua l9i
 
Veritas187 said:
I’m thinking of getting this chip to go into my Sentry that’s just arrived but waiting to see others personal interaction with it in terms of thermals particularly with the noctua l9i
Click to expand...


Bottom line is that in Synthetic Benchmarks, with the L9i, you will probably get fulll speed in short bursts at full fan speed, which is loud.However, sustained turbo is in the 3.3-3.5GHZ range, and it hits 90-95c.

That was on an open bench. If you want full turbo, you need better than an L9i.

That said, if you trim the power usage back to what a 8700T might pull, you can still have this CPU for when better cooling comes out.

EDIT for UPDATE: I just started doing some serious gaming benchmarks on the system. I played BF1, on Ultra, at 2688x1680 (1920x1200 super sampled by 1.4 times). Graphics card is a MSI Aero ITX 1070. At a rock sold 60 FPS (work monitor doesn't go past 60HZ), I saw the CPU boost to 4.3GHZ on all cores. Temps would spike into the 90s on occasion, but the clocks did not throttle.

For gaming, BF1 at least, seems to be fine when using the L9i.
 
Last edited:
Newegg cashing in on this screwed situation. 8700k is 410, 8700 is 340, 8600K is 300, 8350K is 250(oh deer), 8400 is 240. Overpay much. I guess one just has to wait it's coming soon
 
OrangeKhrush said:
Newegg cashing in on this screwed situation. 8700k is 410, 8700 is 340, 8600K is 300, 8350K is 250(oh deer), 8400 is 240. Overpay much. I guess one just has to wait it's coming soon
Click to expand...


Their system is automated. Demand goes up, so does price.

At $240 for the 8400, I'd have to seriously consider a Ryzen 7 series. Man it feels good to have some competition again. Reminds me of the Barton XP days.
 
Ok so in the interest to not mislead, I made a mistake.

I was hitting current limitation on my CPU, when I opened up the LLC to a higher level I noticed I was hitting thermals of 80c package. This is very hot indeed.

Thus, yes I can hit high OC at lower voltage but the thermals are too high. I am going to have to delid and apply new TIM. This is too hot for my blood. So much more potential if you can strip the heat off.

I am using afull custom loop too!
 
You must log in or register to reply here.
Back
Top