6700K or 5820K?

[readers]

Stop being obtuse about what I'm saying. You guys are getting ridiculous now.

Anyone who says "I need a $1000 CPU" is kidding themselves. There is no need, only want unless you're buying it strictly for work usage and 8 cores vs 6 makes a huge difference for whatever you're doing and will save you time and money in the long run. This probably doesn't apply to people buying it for gaming just because they can.

Also yeah I needed a new computer, not want but actually need. You have to buy newer hardware to keep up with the latest games and keep frame rates up. I could not imagine still trying to run a Socket 939 board still for new titles.

Can you read? Go back to my first post, where I said I would buy it just for gaming? Someone made a ridiculous statement that no one need it, which is completely BS, as someone who does lots of video encoding but also a hardcore game, there is no better CPU out there now.

 

[Anteaus]

Mostly true, but it should be said that the 5820k has 28 PCIe 3.0 lanes while a 6700k on Z170 has 36 PCIe 3.0 lanes. The 5820k has all it's lanes provided by the CPU and the 6700k has 16 lanes for GPU and the Z170 chipset has an additional 20 for additional cards and M.2 PCIe SSDs.

My biggest hangup is overclocking a 5820k on air. I always overclock my components and I think it will be much easier to get a 6700k to at least 4.5 on air than a 5820k. I know there are IPC improvements so that a few hundred Mhz won't be a big difference in performance when compared to my 3570k at 4.5Ghz. I'm just not sure how far I can push a 5820k on air cooling.

I concur. I don't overclock but I've done my homework. General consensus is that the 5820K has a lower overclock ceiling than other chips using similar techniques due to the higher power requirements, (i.e. it runs hotter). I have no anecdotal evidence to know for sure.

For me this doesn't matter because I don't OC but I can see it as a problem for those that do. It might be more finicky with some motherboards and you might need to resort to water cooling, but I've read that getting to 4Ghz is somewhat straightforward. Beyond that is where decidedly less so. On the bright side, most people were able to match the 6700k's core speed, which really helps null out what small advantage it had.

 

[cmdrdredd]

Can you read? Go back to my first post, where I said I would buy it just for gaming? Someone made a ridiculous statement that no one need it, which is completely BS, as someone who does lots of video encoding but also a hardcore game, there is no better CPU out there now.

It seems you're the one who can't read. I never called you out saying you're buying it only for gaming.

I'm making general statements about "need". There is a want for higher end and faster things. You can still do your work on a 5820k, but you want more cores to do faster rendering or encoding.

 

[readers]

It seems you're the one who can't read. I never called you out saying you're buying it only for gaming.

I'm making general statements about "need". There is a want for higher end and faster things. You can still do your work on a 5820k, but you want more cores to do faster rendering or encoding.

Some people consider time is a lot more valuable than a few hundred dollars. which if you consider hourly rate of first world country, it's true. So, yes, NEED.

Also the reason I say you can't read is very simple, I don't care about your general statement, I wasn't arguing against anything you said, you just jumped in, I was arguing against the BS statement made by someone esle, which is "No one need 5960x, and if your work needs it, then you need dual socket server board". To which, what if my work need it and I also want to game on this PC?

 

[AtenRa]

Mostly true, but it should be said that the 5820k has 28 PCIe 3.0 lanes while a 6700k on Z170 has 36 PCIe 3.0 lanes. The 5820k has all it's lanes provided by the CPU and the 6700k has 16 lanes for GPU and the Z170 chipset has an additional 20 for additional cards and M.2 PCIe SSDs.

The big difference is that Z170 is connected to the CPU by the DMI 3.0 which has 4x 8GT/s lanes. With each PCIe 3.0 lane at 8GT/s, you can only use 4x PCIe lanes from the Z170 at full speed. That makes the total PCIe 3.0 lanes to 20 for the Skylake platform. Now if you use more than 4x PCIe lanes from the Z170 then the speed will go down.
If you only want to connect a single M2.0 SSD then you will be fine, once you connect another device in to the Z170 then your M2.0 SSD speed will drop.

Core i7 5820 has 28 lanes at full PCIe 3.0 speed, so you can connect more devices at full PCIe 3.0 speed.

 

[cmdrdredd]

The problem I found is that some motherboards stick the usb 3.1 on a pcie lane so it shuts off one lane when using it and you lose a pcie slot when using the m.2. Not every board is like this but I have seen a few from various manufacturers that have this in the fine print. One from asus even said that if you use usb 3.1 and m.2 that some of the pcie slots will run at 1x. What got me is that if you were running two GPUs then your second one would be stuck at 1x.

Just gotta plan ahead about what slots you need to use with add-in cards.

 

[Tecnoworld]

Very interesting thread.

I'm exactly deciding if I should go for the 5820k or the 6700k.

My primary task would be photo editing (Lightroom and photoshop) and video editing (premiere). I'll also like to play with my PC, but to a lesser extent (say 20% of the time).

Whatever the CPU, I'll buy 16GB of memory for the setup, and complement it with a very fast primary SSD drive (Samsung 950 pro M.2 card 512MB) and a couple of Samsung 850 EVO 1TB in raid 0 on SATA.

What would be the best CPU for this configuration and use?

p.s.: for the beginning, I'll use my old Radeon 6970 as a GPU, waiting for the incoming DX12 cards in 2016.

 

[R0H1T]

Very interesting thread.

I'm exactly deciding if I should go for the 5820k or the 6700k.

My primary task would be photo editing (Lightroom and photoshop) and video editing (premiere). I'll also like to play with my PC, but to a lesser extent (say 20% of the time).

Whatever the CPU, I'll buy 16GB of memory for the setup, and complement it with a very fast primary SSD drive (Samsung 950 pro M.2 card 512MB) and a couple of Samsung 850 EVO 1TB in raid 0 on SATA.

What would be the best CPU for this configuration and use?

p.s.: for the beginning, I'll use my old Radeon 6970 as a GPU, waiting for the incoming DX12 cards in 2016.

More cores, hence 5820k easily ()

 

[Tecnoworld]

Ok, thx, what about an affordable but good x99 motherboard? Would the Gigabyte GA-X99-UD3 allow for good overclocking performance? It's the cheapest that I can find and seems quite decent, specs wise.

 

[R0H1T]

Ok, thx, what about an affordable but good x99 motherboard? Would the Gigabyte GA-X99-UD3 allow for good overclocking performance? It's the cheapest that I can find and seems quite decent, specs wise.

Looks like a good board but it doesn't seem to have an ultra M.2 slot to make full use of the 950 pro. I'm a bit biased towards ASRock so I'd recommend the X99 extreme4, the latest version (same model) with USB 3.1 is also qually worthy, the other good alternative is ASUS' X99-A with the same option of going with USB 3.1.

 

[Tecnoworld]

Thx! Seems that supported memory only goes up to 3000mhz. Is it a waste to buy the vengeance 3200 kit? I could find it at a decent price, but there could be cheaper options at 3000...

 

[R0H1T]

Thx! Seems that supported memory only goes up to 3000mhz. Is it a waste to buy the vengeance 3200 kit? I could find it at a decent price, but there could be cheaper options at 3000...

If you're getting high speed mem at a fair price then by all means get it, ASUS' x99-A would then be a better choice since it supports mem speeds of up to 3200MHz. I could've bought the same (ASUS) board thrice in the last two weeks at 180~190$ (depending on the fluctuating exchange rates) but alas had no real need for it, now am at least slightly disappointed that I let it go at that price :\

However you'll have to decide if you do need that high speed mem for yourself, generally speaking it won't make much of a difference above 3000MHz.

 

[tAmbal]

I'm also stuck between 6700k and 5820k, leaning towards the 5820k. (I really want more cache and cores.) did not upgrade to haswell-e last year cause I was waiting for skylake, but then skylake came out and was a disappointment.
Is upgrading to X99 still worth it? will the next coming processor skylake-E work on the X99 platform?

 

[R0H1T]

Is upgrading to X99 still worth it? will the next coming processor skylake-E work on the X99 platform?

Yes & No respectively.

 

[tAmbal]

that sucks. I might stick to 6700k then, or just wait with the upgrade again. dammit everytime you want to upgrade there's something around the corner, I hate it.

 

[Anteaus]

that sucks. I might stick to 6700k then, or just wait with the upgrade again. dammit everytime you want to upgrade there's something around the corner, I hate it.

Go with the 5820K. The price difference is negligible and by the time its time to upgrade you'll likely need to change chipset regardless of whether you go X99 or Z170. The two extra physical cores are worth it in my opinion. I'll repeat what has been said before: in spite of the higher single core performance of the 6700K, neither CPU will be the limiting factor in your new build if you game...it will be the GPU. For everything else, 6(12) is better than 4(8).

Sometimes you just gotta pull the trigger.

 

[RussianSensation]

Ok, thx, what about an affordable but good x99 motherboard? Would the Gigabyte GA-X99-UD3 allow for good overclocking performance? It's the cheapest that I can find and seems quite decent, specs wise.

Don't do it.

That board's M.2 maximum speed is only 10Gb/sec.
http://www.gigabyte.com/products/product-page.aspx?pid=5138#ov

The absolute best 'budget' X99 board is the Asrock X99 Extreme 4. It basically beats all competition in terms of price and features. It has premium components, a ton of features and great onboard sound.

Asrock X99 Extreme 4 has Ultra M.2 interface which pushes the speed up to 32Gb/s which is nearly 3X faster than the Gigabyte X99 boards.

Samsung 950 Pro M.2 is very similar to the Samsung SM951. Make sure to read compatibility of the SM951 on X99 boards:
https://www.ramcity.com.au/blog/m.2-ngff-ssd-compatibility-list/189

You could also consider Asus X99-A USB 3.1 but not all BIOS versions work well with SM951 (see link above).

If you want to raid 950 M.2 drives down the line, go Z170 automatically. Also, I would only recommend going 5820K if you plan on overclocking. Otherwise, i7 6700K is better out of the box and Z170 has native NVMe compatibility so it should have the least issues with Samsung's 950 Pro M.2 drive.

Thx! Seems that supported memory only goes up to 3000mhz. Is it a waste to buy the vengeance 3200 kit? I could find it at a decent price, but there could be cheaper options at 3000...

For X99 platform, it is a waste for 2 reasons:

1) X99 platform will see almost no benefit between DDR4 3000 and DDR4 3200 because it's already quad-channel. Only get 3200mhz DDR4 if the price difference isn't much;

2) Most X99 CPUs will have serious trouble running DDR4 3200 because even if the motherboard and DDR4 can do it, the memory controller inside X99 CPUs sometimes can't even handle DDR4 2666mhz => FACT

I would get any of these kits without overspending for a Corsair DDR4 3200.

Ripjaws 4 16GB DDR4 3000 CL15-16-16-35 1.35V = $120
Ripjaws 5 16GB DDR4 2800 CL15-16-16-35 1.25V = $130 (the main reason to get this over Ripjaws 4 is likely if future CPUs will run out of spec with 1.35V (too high) and you plan to carry over the DDR4 for a next platform upgrade in 2018-2020+
Ripjaws 5 16GB DDR4 3000 CL15-15-15-35 1.35V = $140 (These tight timings are better than DDR4 3200 with CL15-17-17-35 or higher)
Mushkin 16GB DDR4 3000 CL15-15-15-35 1.35V = $142

vs.

Corsair Vengeance DDR4 3200 kit is $175 but has CL16-18-18-36 timings and also 1.35V. Sounds like a waste of $ to me because both Ripjaws 4 and 5 and the Mushkin kits above smash it in timings which means you are paying extra for nothing.

 

[Tecnoworld]

Thx a lot for the great advice.

I'm an overclocker. My current 'very old' system is a q6600 running at 3400mhz ;-)

So I'll definitely try to squeeze every drop of power from my next cpu (planning on buying a cooler master liquid all in one cooler).

So, yes, the 5820k could make sense for me.

But...is the extreme 4 compatible with the samsung 950? Seems so, but I'd like to be sure before spending big $$$ on it.

Raid will be done with cheaper and bigger samsung 850 evo via sata.

 

[MagickMan]

The Asus "overclock socket" (more voltage pins than regular X99 sockets) is worth checking out, IMO, if OCing is your thing. I was able to get 150MHz more out of an Asus X99-A vs a Gigabyte X99-UD4. Why did I get the A over the Deluxe? Because I didn't need the extra features, like on-board wifi, and in terms of performance they're the same, so might as well save $80.

 

[Tecnoworld]

Thx, but where I live the asus is about 40€ more than the asrock! So I went for the following configuration:

- cpu 5820k
- mobo asrock x99 extreme4
- ram 16gb this: http://www.gskill.com/en/product/f4-3000c15q-16grbb
- two samsung 850 evo (raid 0)
- corsair 750w
- corsair 200r case
- cooler master 140xl

 

[MrTeal]

Have the issues with the Asus X99 socket and overvoltage frying HW-E chips been resolved, or is that still a potential concern?

 

[RussianSensation]

Thx, but where I live the asus is about 40€ more than the asrock! So I went for the following configuration:

- cpu 5820k
- mobo asrock x99 extreme4
- ram 16gb this: http://www.gskill.com/en/product/f4-3000c15q-16grbb
- two samsung 850 evo (raid 0)
- corsair 750w
- corsair 200r case
- cooler master 140xl

That's a solid build overall. I am not sure about the CM 140XL as I haven't done much research on that AIO CLC. How much is that AIO CLC compared to say the Corsair H105 or Swiftech H-220X?

FYI, the standard Asrock X99 Extreme 4 board doesn't have USB 3.1. If you need that feature, look into Asus X99-A USB 3.1 model or you would need to find a version of the Asrock Extreme board with USB 3.1.

Just be mindful that you may not be able to get DDR4-3000 speeds rock stable on X99 boards though because not all 5820K's can handle it but since there are very little premiums for DDR4-3000 right now, I can see why you went that way.

Corsair 750W PSU? I hope you went with a Gold version at least. How much is BeQuiet or EVGA or SeaSonic where you are?

 

[MrTeal]

That's a solid build overall. I am not sure about the CM 140XL as I haven't done much research on that AIO CLC. How much is that AIO CLC compared to say the Corsair H105 or Swiftech H-220X?

I haven't tried the H105, but the H220 and H220-X are a real step above the 140XL, and even the 280L.

 

[YBS1]

I haven't tried the H105, but the H220 and H220-X are a real step above the 140XL, and even the 280L.

The Corsair units actually cool pretty well, the biggest advantage of the Swiftech units is they do it while being vastly more quiet.

 

[RussianSensation]

The Corsair units actually cool pretty well, the biggest advantage of the Swiftech units is they do it while being vastly more quiet.

You are right! The CM 140XL competes well on temperatures...

...but the noise levels are ridiculous.

H110 strikes an amazing balance of performance and noise levels compared to the H105 or the CM140XL.

I honestly think unless going with a high quality AIO CLC unit like the H110 or better, it might not be worth it. I think at that point I'd rather go with a great air cooler.

Who wants > 50dBA noise levels with an AIO CLC? That basically defeats the purpose of water which is supposed to offer amazing performance + low noise levels.

Holly cow, the Swiftech H220 completely destroys the Cooler Master 240.

While the CM 120XL is running at 56 dBA and barely beats a $40 Thermalright True Spirit 140 that's operating a whisper quiet 37 dBA. Dang. Ya, I think I would not go with these Cooler Master AIO CLCs now that I looked at the benches.