Leaked Review of i7-8700K.

[done12many2]

Just now, DarkBlade2117 said:

I hope it's wrong, though I'm just going to delid my 6700k and OC it to 4.8 (I know it can hit it). I'll sit out of a CPU upgrade until Zen+/9th gen (Ice lake?) I am getting a 1080 or 1080Ti though

 

You won't miss a thing man.  6700k is still a strong ass CPU.

[Drak3]

20 hours ago, Rune said:

I sincerely hope the 5.3ghz OC rumor was not false. I want to overclock the hell out of this. My 6850k can only do 4.9

"Only."

 

Better than the average for the 5930K by 100MHz, and it's the best X99 hexacore for overclocking going by HWBot averages.

[JediFragger]

9 minutes ago, done12many2 said:

 

You won't miss a thing man.  6700k is still a strong ass CPU.

Yup! I can see my 7700k@5Ghz lasting me a fair while tbh, but am open to a platform upgrade in a couple of years if games do go truly multi-core

[zberry7]

1 hour ago, JediFragger said:

Yup! I can see my 7700k@5Ghz lasting me a fair while tbh, but am open to a platform upgrade in a couple of years if games do go truly multi-core

Out of curiosity, what voltage are you using? And temps your hitting lol, and any other significant settings. 

 

My 7700k isn’t 100% stable at 4.8GHz at 1.3v

I could probably get it stable around 1.35ish, but to hit 5 I’d probably be closer to 1.4-1.45v which is way too much heat for me lol

[MageTank]

6 minutes ago, zberry7 said:

Out of curiosity, what voltage are you using? And temps your hitting lol, and any other significant settings. 

 

My 7700k isn’t 100% stable at 4.8GHz at 1.3v

I could probably get it stable around 1.35ish, but to hit 5 I’d probably be closer to 1.4-1.45v which is way too much heat for me lol

I do 5ghz at 1.35v on a 280mm AIO, though my CPU is delidded with CLU on it. Getting 5ghz without a delid, while surviving the stress tests I use would be nigh impossible for someone like me, lol. 

[XenosTech]

Meanwhile I'm here wondering why intel skipped the 4/8 cpu's >.> It's like they're trying to be AMD now lol

[JediFragger]

9 hours ago, zberry7 said:

Out of curiosity, what voltage are you using? And temps your hitting lol, and any other significant settings. 

 

This is delided and liquid metal in it, so it really really helps with the overclock and temps. Running it a 1.34v@5Ghz using a 240mm be!quiet Silent Loop with the fans set to very quiet. My system overall (with a Ti Hybrid + UW Gsync and 16GB of 3000Mhz Ram) is very cool and quiet (both Ti and CPU don't go over 60c whilst gaming, in a case with not great airflow). I'm very happy with it

[MageTank]

1 hour ago, JediFragger said:

This is delided and liquid metal in it, so it really really helps with the overclock and temps. Running it a 1.34v@5Ghz using a 240mm be!quiet Silent Loop with the fans set to very quiet. My system overall (with a Ti Hybrid + UW Gsync and 16GB of 3000Mhz Ram) is very cool and quiet (both Ti and CPU don't go over 60c whilst gaming, in a case with not great airflow). I'm very happy with it

I have a 1080 Ti hybrid as well (EVGA FTW3 version) inside of a Mastercase Pro5. GPU does not exceed 45C under any load (including superposition) and CPU only hits about 70C under 48k FFT Prime95. I do have memory set to 3600 C14-14-14-28-2, which tends to cause me to run higher vCore (mostly for cache stability, since uncore and vcore voltage is tied together, and memory controller is part of the uncore) so people that are not OCing ram nearly as high, might be able to get away with less vcore to stabilize 5ghz on the core.

 

I certainly agree with delidding helping with OCing, as thermals directly impact the resistance of silicon. I imagine delidding is going to be required for the 8700k as well, especially because I imagine the die size to be extremely similar, so transfer of heat will be a very big deal. 

[Master Disaster]

On 09/25/2017 at 6:07 PM, PCGuy_5960 said:

Impressive performance! Especially if you consider that it costs the same as the 7700K.

Says who? The rumour is Intel are going to jack up the price a fair chunk for the 8700K (unconfirmed obviously).

[Dylanc1500]

6 minutes ago, Master Disaster said:

Says who? The rumour is Intel are going to jack up the price a fair chunk for the 8700K (unconfirmed obviously).

Intels most recent announcement showed the 8700k at $359.

[Master Disaster]

13 minutes ago, Dylanc1500 said:

Intels most recent announcement showed the 8700k at $359.

Fair enough then, I guess that shows why you should never listen to rumours.

[Simon771]

I'm wondering if i7 8700k will be able to OC all of it's 6 cores to 5GHz, or at least 4,8GHz.

If it can do that, I'm assuming it will come close to Ryzen 7 in multithreaded score. We already know it will dominate in single core performance.

[MageTank]

6 minutes ago, Master Disaster said:

Fair enough then, I guess that shows why you should never listen to rumours.

Yeah, rumors are terrible. Now, MageTank Prophecy's on the other hand, those things are 100% accurate at all times, and are totally not the same thing as rumors. Feel free to listen to those  

[ravenshrike]

Isn't RCP the tray price per 1000 cpus?

[porina]

12 minutes ago, Simon771 said:

I'm wondering if i7 8700k will be able to OC all of it's 6 cores to 5GHz, or at least 4,8GHz.

If it can do that, I'm assuming it will come close to Ryzen 7 in multithreaded score. We already know it will dominate in single core performance.

I think it has a very good chance of doing so, but it will probably need a delid and a good cooling solution. While not the same CPU, my 7800X without delid, but with custom loop, seems stable at 4.8 GHz, stable enough for some benchmarks at 4.9 but 5.0 has been out of reach. At 4.9, during a short Cinebench run temps are well into the 90's. I think it really needs a delid to extract maximum potential.

[Wulfy96]

I'd imagine the i7 8700k is going to be Z370 boards only ? Has that been confirmed ?

[MageTank]

6 minutes ago, Wulfy96 said:

I'd imagine the i7 8700k is going to be Z370 boards only ? Has that been confirmed ?

Yeah, they said that. However, I am waiting on ASRock to do their usual thing, and circumvent it entirely through some sort of wacky mod or microcode. From a strict chipset perspective, Z270 is 100% compatible with CFL. It's the motherboard pin configuration along with a mix of microcode trickery that's holding real Z270 support back. However, many pins on Z270 are unassigned or used as ground, so there is still a slight possibility that support could happen, just wouldn't hold my breath. 

[Wulfy96]

1 minute ago, MageTank said:

Yeah, they said that. However, I am waiting on ASRock to do their usual thing, and circumvent it entirely through some sort of wacky mod or microcode. From a strict chipset perspective, Z270 is 100% compatible with CFL. It's the motherboard pin configuration along with a mix of microcode trickery that's holding real Z270 support back. However, many pins on Z270 are unassigned or used as ground, so there is still a slight possibility that support could happen, just wouldn't hold my breath. 

I mean if it does it does though how would it affect motherboard pricing I have no idea

[Simon771]

17 minutes ago, porina said:

I think it has a very good chance of doing so, but it will probably need a delid and a good cooling solution. While not the same CPU, my 7800X without delid, but with custom loop, seems stable at 4.8 GHz, stable enough for some benchmarks at 4.9 but 5.0 has been out of reach. At 4.9, during a short Cinebench run temps are well into the 90's. I think it really needs a delid to extract maximum potential.

I would gladly go from R7 1700 to i7 8700k just to get single core performance which I need for MMORPG games ...

But I don't need all those problems with thermals ... 80°C under aida64/prime95 load is acceptable for me, since I know it won't ever go over 75°C with my daily tasks. 

However, those temps will be probbably when you leave CPU at stock settings.

Delidding isn't exactly solution for me.

 

So I will wait for users to test that 8700k and report temps when overclocked, and only then I will decide if I want to invest around 370€ for CPU and 150€ for motherboard.

Which leads me to another problem ... I can only fir mATX in my case, so I do hope there are going to be decent mATX motherboards out there.

[AncientNerd]

55 minutes ago, ravenshrike said:

Isn't RCP the tray price per 1000 cpus?

That was my original thought as well, then I looked back at their price slides for their last couple of releases and the RCP is what the retail ended up at after prices had stabilized.

It may be higher due to early demand but will eventually end up at that price.

[zberry7]

3 hours ago, JediFragger said:

This is delided and liquid metal in it, so it really really helps with the overclock and temps. Running it a 1.34v@5Ghz using a 240mm be!quiet Silent Loop with the fans set to very quiet. My system overall (with a Ti Hybrid + UW Gsync and 16GB of 3000Mhz Ram) is very cool and quiet (both Ti and CPU don't go over 60c whilst gaming, in a case with not great airflow). I'm very happy with it

I’m using a 980Ti hybrid right now and it’s still working great, never seen temps hit 60 either , my 7700k tho can easily hit low 70s on heavier loads (even gaming) and low 80s in synthetics lol. With a h110i V2 240mm cooler (w/ fairly aggressive fan curve)

 

Think I’m gonna order a delidding tool soon, because once I get my 1080Ti I plan on doing a custom loop, it’s crazy how bad this thermal paste intel uses is. I saw a review that showed the 7980XE going into basically thermal runaway at stock settings lol. Crazy how you HAVE to delid the XE and basically every other intel chip if you want decent thermals.

[porina]

1 hour ago, Simon771 said:

I would gladly go from R7 1700 to i7 8700k just to get single core performance which I need for MMORPG games ...

But I don't need all those problems with thermals ... 80°C under aida64/prime95 load is acceptable for me, since I know it won't ever go over 75°C with my daily tasks. 

However, those temps will be probbably when you leave CPU at stock settings.

Delidding isn't exactly solution for me.

 

So I will wait for users to test that 8700k and report temps when overclocked, and only then I will decide if I want to invest around 370€ for CPU and 150€ for motherboard.

Which leads me to another problem ... I can only fir mATX in my case, so I do hope there are going to be decent mATX motherboards out there.

You did mention 5 GHz which is really pushing it. Backing off the clock a bit helps a huge amount. Taking my 7800X example again, at 4.8 it only needs 1.25v, but to go past that, I hit the voltage wall. 1.35v isn't quite enough to stabilise 4.9, and I've not managed to get a bench run in at 5 GHz any voltage. BTW for Prime95 my testing setting was 4.3 GHz 1.10V, and I used AVX offset to limit AVX clock when testing the higher clocks otherwise.

 

Also I've done similar on my 1700. My basic OC is 3.6 GHz 1.20v. 3.9 GHz requires a big jump to 1.40v and turning up load line compensation, and I even did a suicide run at 4.0 GHz but forgot what silly voltage that needed. You just need to stay the sane side of that voltage wall whatever you go with.

[Simon771]

3 hours ago, porina said:

You did mention 5 GHz which is really pushing it. Backing off the clock a bit helps a huge amount. Taking my 7800X example again, at 4.8 it only needs 1.25v, but to go past that, I hit the voltage wall. 1.35v isn't quite enough to stabilise 4.9, and I've not managed to get a bench run in at 5 GHz any voltage. BTW for Prime95 my testing setting was 4.3 GHz 1.10V, and I used AVX offset to limit AVX clock when testing the higher clocks otherwise.

 

Also I've done similar on my 1700. My basic OC is 3.6 GHz 1.20v. 3.9 GHz requires a big jump to 1.40v and turning up load line compensation, and I even did a suicide run at 4.0 GHz but forgot what silly voltage that needed. You just need to stay the sane side of that voltage wall whatever you go with.

Well 4,8GHz would be great aswell. 

But only if I can archive that with my dark rock 3, and without delidding. Somehow I don't think that will be even remotely possible. But it's worth to wait for it.

[Dylanc1500]

6 hours ago, MageTank said:

Yeah, rumors are terrible. Now, MageTank Prophecy's on the other hand, those things are 100% accurate at all times, and are totally not the same thing as rumors. Feel free to listen to those  

Your prophecies are true but Microcenter tried to make you a liar. Microcenter is selling the 7700k for $279 with 30 off a motherboard. 

[Phentos]

Looks like CFL has lived up to the hype.

 

Personally am more than satisfied with my 1700, though I am entertaining the thought of eventually going balls-to-the-wall HEDT Coffeelake/Icelake sometime.