5820k vs 6700k

[tuffjuff]

Good morning all,

I have been waiting for Skylake-E for what seems like forever, to upgrade from a 4690k. Recently, a secondary system has required a CPU/motherboard replacement, so my hand has been forced into an early upgrade. Looking into a 5820k, 16GB DDR4, X99 motherboard and the possibility of overclocking... it looks like I'll need massive cooling to pull anything north of 4Ghz. I've always liked the idea of more cores/threads from a future-proofing standpoint (Haswell-E or Skylake-E should, within reason, allow the CPU/motherboard/RAM to last me 5 years or more) but there's no denying a 6700k sounds like it would go faster, easier.

I'm terrified of the idea of a bendable CPU, and it has less cores for about the same price, but I also don't need tons of PCIe bandwidth for anything more than a possible eventual SLI of 980 Ti's. Am I crazy for wanting those extra cores, or is 6700k really that much better of an option for somebody who does mostly gaming with his CPU horsepower?

Your advice is appreciated! Please let me know if I'm inadvertently left out any important detail.

[TheRandomness]

5820k because cheaper + Breadwell-E soon

[tuffjuff]

Just now, TheRandomness said:

5820k because cheaper + Breadwell-E soon

 

The CPU prices seem to be about the same... out of sheer ignorance on my part, how would eventual Broadwell-E affect me/Haswell-E?

[Dr_Pleeper]

5820k

 

[Kobathor]

The 5820k is an all-around better CPU. 6 Haswell cores, instead of 4 Skylake cores.

[don_svetlio]

5820K is around 40% faster overall

[Darkseth]

4 Ghz is piss easy to cool. For example, a Thermalright Macho HR02 Rev B.

It should be enough up to 4.5 Ghz or so (at least, my 6700k is totally fine at 4.5 Ghz).

On the 5820k it should be np, since you wont put up much voltage . 4 ghz might be possible with 1.13 - 1.2 Volts, which is not very high.

However, if you compare both at the same clock speed:

 

5820k:

- Consumes more power (can be 100-130 more if you OC it up to 6700k level)

- Might get hotter due to higher TDP

- Has 50% more Cores

- even at same clock speed, its SLIGHTLY slower (maybe max a few small %) per Clock/Core. But you can ignore that tbh.

- Motherboard is like 100 bucks more

 

6700k:

- consumes much less power

- cheaper Boards/platform, depending where you live. here in Germany, its about 130€ cheaper, than an x99 platform

- USB 3.1 Type C without an additional Card

 

If you think about buying.. Pls dont get the old Haswell E. Wait for Broadwell E these 2 more months or so, and get that.

[Oshino Shinobu]

1 minute ago, tuffjuff said:

 

The CPU prices seem to be about the same... out of sheer ignorance on my part, how would eventual Broadwell-E affect me/Haswell-E?

Broadwell-E should be on the same socket that Haswell-E is (2011-3), so when it comes out, you have the option to upgrade if you want to. 

While the 6700K will technically do better in games, I would go for the 5820K for the multi-tasking and rendering/editing capabilities (if you ever need them). Also, as more games start supporting more cores, the 5820K's performance will improve in games. 

[S7117]

5 minutes ago, tuffjuff said:

I have been waiting for Skylake-E for what seems like forever, to upgrade from a 4690k. Recently, a secondary system has required a CPU/motherboard replacement, so

5820K is better overall because of the 6-cores plus it is one of intel's extreme edition cpus. 6700k is like the 4790K with slightly better temps and performance.

The biggest difference is just the architechture one is 22nm and the other is 14nm. But this is just size comparison not a huge performance boost. 

So the 5820K is the overall better choice even though the 6700k is newer.

[tuffjuff]

I'm glad to hear my 5820k dreams aren't crazy. I really do love the idea of more cores, and I also like that I won't crush my CPU with cooling like I could with Skylake.

I may be able to hold out until early March, but that's about it for me. Power draw isn't a terrible concern - I have an eVGA Supernova 850 and only a handful of drives, 980 Ti and the CPU, plus my system isn't on 24/7.

Is air cooling even a possibility with these at 4GHz or more, or is the Anand review's suggestion of requiring 240 or 360 rad water cooling a reality?

[S7117]

2 minutes ago, tuffjuff said:

I'm glad to hear my 5820k dreams aren't crazy. I really do love the idea of more cores, and I also like that I won't crush my CPU with cooling like I could with Skylake.

I may be able to hold out until early March, but that's about it for me. Power draw isn't a terrible concern - I have an eVGA Supernova 850 and only a handful of drives, 980 Ti and the CPU, plus my system isn't on 24/7.

Is air cooling even a possibility with these at 4GHz or more, or is the Anand review's suggestion of requiring 240 or 360 rad water cooling a reality?

In general I pull for water cooling as I just find it more appealing and to me quieter if you get a good rad and decent fans. I love my H100i GTX. 

Cooling it would possibly extend its life a little as well. The main reason cpus fail over time is voltage and heat so overcooling your system is not really a problem.

[tuffjuff]

1 minute ago, S7117 said:

In general I pull for water cooling as I just find it more appealing and to me quieter if you get a good rad and decent fans. I love my H100i GTX. 

Cooling it would possibly extend its life a little as well. The main reason cpus fail over time is voltage and heat so overcooling your system is not really a problem.

Good to know - I was under the impression that an H100i wouldn't be enough for a 5820k. Looks like I need to look up some overclocking videos! I'll probably be going 5820k, then, unless something happens with the Extreme Edition space in the next few months. 

[stealth80]

The 6700K is the better CPU for gaming. Games are literally just starting to use more than 4 cores (like 4 titles?) so at a guess I would say the 5820K would be obsolete by the time they using upto 12 (6 + HT). Also clock for clock the 6700k is also stronger in single - 8 threaded apps. However the X99 is without doubt the better platform. If I were you I would seriously consider waiting for the Broadwell-E or maybe grab a 5820k with a view to Skylake-E next year when they are dropped

 

[S7117]

1 minute ago, tuffjuff said:

Good to know - I was under the impression that an H100i wouldn't be enough for a 5820k. Looks like I need to look up some overclocking videos! I'll probably be going 5820k, then, unless something happens with the Extreme Edition space in the next few months. 

also take a look at the overclocking data base here on LTT as it will help you kind of get an idea of overclocking expectations and trends. Its in the cpu forum.

[Darkseth]

The funny part is.. A good Air cooler is actually BETTER than the H100i, which is just a joke, like 99% of all AIO liquid coolers.

 

Even if you buy a 120 bucks AIO water cooler, you NEED extra 30 bucks for silent noctua coolers~

And you will always have a compromise:

- Either it cools just a few degree better than a Noctua NH D15, but is 2-3 times more Loud, or

- it's quiet, but Cooling performance is worse, than an Air cooler for the half price.

[S7117]

1 minute ago, Darkseth said:

The funny part is.. A good Air cooler is actually BETTER than the H100i, which is just a joke, like 99% of all AIO liquid coolers.

 

Even if you buy a 120 bucks AIO water cooler, you NEED extra 30 bucks for silent noctua coolers~

And you will always have a compromise:

- Either it cools just a few degree better than a Noctua NH D15, but is 2-3 times more Loud, or

- it's quiet, but Cooling performance is worse, than an Air cooler for the half price.

i have no problem with cooling mine and also having it overclocked with out being loud at all really.

[S7117]

Just now, S7117 said:

i have no problem with cooling mine and also having it overclocked with out being loud at all really.

Sure, mines not a 5820k but still with 4.7ghz and temps never getting over 70 degrees....

[Darkseth]

I never said its not possible.

But they are actually way too expensive, if you compare their Cooling performance / noise ratio to high end air coolers. It's not better.

 

If you use the same reference cooler, even the H110i isnt really better than a high end Noctua Air cooler / Bequiet cooler, but costs much more.

 

Only real Pro is that they are really small/compact - in Case big coolers dont fit in the case

[i_build_nanosuits]

5820K is hands down a much better more capable CPU and come with a better platform, more upgrades possible and more pcie lanes.

I would take the 5820K

[tuffjuff]

20 minutes ago, Darkseth said:

The funny part is.. A good Air cooler is actually BETTER than the H100i, which is just a joke, like 99% of all AIO liquid coolers.

 

Even if you buy a 120 bucks AIO water cooler, you NEED extra 30 bucks for silent noctua coolers~

And you will always have a compromise:

- Either it cools just a few degree better than a Noctua NH D15, but is 2-3 times more Loud, or

- it's quiet, but Cooling performance is worse, than an Air cooler for the half price.

 

I'm glad you bring this up - I've been wanting to try something like a Noctua NH-D15. If I went with liquid cooling, I'd throw some Noctua fans on there anyway, and I don't know how effective it would be (static pressure or whatever).

[Nena Trinity]

I like the 5820K best! :3

[Darkseth]

Yup, i've read those Radiators need "pressure", which mostly comes from fan speed (and higher speed = loud).

If you can fit a D15 in your case, go for it. I just went for a cheaper cooler, because i wasnt going for higher OC numbers ^^

[tuffjuff]

2 minutes ago, Darkseth said:

Yup, i've read those Radiators need "pressure", which mostly comes from fan speed (and higher speed = loud).

If you can fit a D15 in your case, go for it. I just went for a cheaper cooler, because i wasnt going for higher OC numbers ^^

 

The Obsidian 750D fits up to... 170mm high coolers, and the D15 is 155 or 160 if I recall. Currently, I run a bunch of Corsair AF120 and AF140fans and my system is loud is hell. When I swap motherboards, I plan to replace all fans with Noctuas, or a fan controller. Ever since I liquid cooled the 980 Ti, I see no reason for my system to be so loud.  

[stealth80]

18 minutes ago, i_build_nanosuits said:

5820K is hands down a much better more capable CPU and come with a better platform, more upgrades possible and more pcie lanes.

I would take the 5820K

Just playing "devil's advocate" here so not start shouting lol (read my post earlier in thread)

Why? Main use is gaming

 

[i_build_nanosuits]

6 minutes ago, stealth80 said:

Just playing "devil's advocate" here so not start shouting lol (read my post earlier in thread)

Why? Main use is gaming

 

even for gaming many modern game engines these days can leverage more than 4 heavy threads and having more than 4 cores will defenetly help, especially looking toward the future with DX12 on the way and stuff...also the 6700K per clock performance in only around 5% better so it's really not worth writing home about an overclocked 5820K will match the single-threaded performance of an i7-6700K handily and will greatly outperform it in terms of multi-threaded performance which will also be beneficial to gaming. the 5820K is a better, more capable chip across the board and it's a joke that they cost about the same the 5820K should be at least 30% more expensive but it's not so might as well jump on it.