Recommended coolers for OCing an i7 5820k?

Deankavanagh1999

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After looking to upgrade my platform as my i5 4460 was noticeably bottlenecking my gtx 980 Ti in gaming, I pulled the trigger on a gigabyte x99 soc champion motherboard + an i7 5820k for £330 here in the UK. Next is the cooler purchase for me and I have been researching whether the hyper 212 evo would be suitable for overclocking my CPU and from what I have found, people have said that they would recommend a water cooler for the 5820k to achieve north of 4.0 Ghz. If so, what is the best bang for the buck water cooler to purchase?
 
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Yes. But that applies to any board, amd or Intel. Faster ram has an affect, but how much depends on the game itself. Some games have so little ram usage as such, that there's almost no change as the bandwidth is wide open and waiting on the cpu to do something with the info. Some games are very ram heavy, so faster ram has a larger impact. Cpu speeds will also impact this as a slow cpu with fast ram leaves things hanging, while a fast cpu with slower ram is always waiting. Single-dual-quad also impacts this as 2133 in quad channel has faster throughput than 2666 in dual channel. It's a balancing act. So generally you'll see that 4x4 2133 in quad will be slightly faster than 2x8 2666 in dual. How much is actually translated to fps will...
Its not like go for watercooler only for OC that much you can buy AIR coolers too good one there are many good performance AIR coolers in which you dont have to worry about there life cycle
as for hyper 212 they are just entry level you cant get taht much from your Unlocked CPU
 

Blkacr

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have a corsair h80i on my 5820k and I have a 4.2 ghz over clock and a corsair h115i on my 5930k with a 4.5 now. they both run great. the h80 on the 5820k def hit is peek at keeping it cool at 4.2 (temps on full stress are about 83-85) would probably go with the h100-115 to really keep the processor cool.
 

Karadjgne

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Much depends on ram. If you have all 8 or 4 sticks (2 on each side) of the mobo covered for true quad channel ram, then getting most of the big air to actually fit is impossible. The heatsink physically doesn't have the clearance for ram height on the left side, and can't be adjusted upwards like the fan on the right. Almost all users of fully populated ram slots will use aio or full custom loop for this reason. It's the only type of cooler that will work, regardless of preference.

The only way to get even a hyper212 to work is if ram is all on the right side on a plain dual channel configuration, on which case you miss the point of the x99 ability, and might as well stick with skhlake/kabylake as IPC will be better per thread anyways.

It's a 6core/12thread cpu, rated at 140w TDP. TDP is usually 20%-30% below maximum possible heat. As soon as you start OC, start adding thermal wattage output. A hyper212X is 160w max. All I can say is good luck with that, there's good reasons why x99 users go big or go home.
 
If you plan to OC north of 4.0Ghz, I'd get either a large aircooler, or a good 240mm AIO if you're looking at those. Like mentioned above, you'll need to check for clearance issues if you go "big air". When I got my 5820k at launch, I was testing it both stock and OC'd to 4.4Ghz speed using a Noctua NH-U14S. Stock speed temps were fine, but under stress testing for overclock, I was hitting low 90s peak after 20 minutes or so with good mounting and thermal compound. This was of course worst case scenario. I was testing in my old 800D case with plenty of airflow. Gaming temps were much lower of course, but I wanted to factor in a worst case full load scenario if needed.
 

Karadjgne

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And the U14S is no slouch of a cooler either...
All of those x99's are capable usually of over 200w OC's, if you push them that hard, so a determining factor can also be just how high you will ever plan on going. You say 4.0GHz today, but is there a maybe of 4.3? 4.4? One day? The thing is, you can never over-cool a cpu. You can easily stick the biggest 280mm cooler on a stock x99. Just means you'll never, ever have to worry about heat issues, even if you get into something heavy like rendering, or streaming while gaming etc. But you most definitely can under-cool a cpu especially if you don't plan for future escapades. Hate to see ppl spend good money on a decent cooler, just to turn around and spend more when they realize what they bought isn't enough. Better to spend your money just the one time.
 

Deankavanagh1999

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Thanks everyone for the useful advice, I think I will save up the money and get a 240mm liquid cooler rather than skimp out? Furthermore, can any of you guys report on how ram frequency effects performance of your cpu and gpu as digital foundry have shown there to be a correlation between higher ram speeds, and getting more out of the cpu? Cheers.
 
I can tell you X99 is picky on RAM frequencies. After counless hours dialing things in, I ended up running my 2800 at 2666 with tighter timings vs. stock. When using 2800 or 3000, the 125 strap is needed for most people to get that speed. It's rare to get those on the 100 strap to pass POST. However, some CPUs(mine), don't OC the CPU core speed well when using 125 strap. 2666 is on the 100 strap, but so is 2133, 2400, and 3200, though never tried. When I could POST at full 4.4Ghz with 2800 or 3000 RAM frequency, I found in memory latency and bandwidth tests I got higher throughput and benchmark scores with a tweaked 2666 setting. At 2800 or 3000, you had maybe a 50/50 chance of booting and passing POST. This was after several UEFI updates. With RAM set at 2666, mostly cured that issue. Unless things have changed with newer steppings, ect, 3200Mhz is about the max memory on X99 with Haswell-E except a rare few at 3400.
 

Karadjgne

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Ram on an x99. What kind? X99 platforms have the ability to run full quad-channel ram, which the regular boards cannot, they can only run 2x sets of dual channel. But to run quad will take both sides of the socket. All things being equal, single channel is slow, dual channel faster and quad channel fastest throughput, how much so depending on how the ram is used, what's using it, even which slot can affect it (according to mobo vendors recommendations).

(Ddr3/ddr4 x79/x99 same configurations)

Also depends on the ram itself. Having 4 sticks in the same kit doesn't necessarily mean it's quad channel capable, it's usually 2x sets of dual channel rated. This makes a difference because the bios chip on the ram only allows for dual channel no matter what slots you use physically.

For normal, 2x sticks of dual channel with big air, you'd use C1/D1.
For normal 4x sticks of dual channel with big air C1C2/D1D2, populate both channels on same socket side.
With an aio, this can change as the socket is no longer height restricted, so you can use B1/D1, or with 4x sticks B1B2/D1D2 etc. For quad channel ram it'd be 4x sticks, A1/B1/D1/C1 etc.
 

Deankavanagh1999

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Hi there, what I meant was the ram speed in MHz. For example 2 8gb sticks running at 2133mhz vs 2 8gb sticks running at 2666mhz, has anyone seen a difference in game performance with faster ram on the x99 platform?
 

Karadjgne

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Yes. But that applies to any board, amd or Intel. Faster ram has an affect, but how much depends on the game itself. Some games have so little ram usage as such, that there's almost no change as the bandwidth is wide open and waiting on the cpu to do something with the info. Some games are very ram heavy, so faster ram has a larger impact. Cpu speeds will also impact this as a slow cpu with fast ram leaves things hanging, while a fast cpu with slower ram is always waiting. Single-dual-quad also impacts this as 2133 in quad channel has faster throughput than 2666 in dual channel. It's a balancing act. So generally you'll see that 4x4 2133 in quad will be slightly faster than 2x8 2666 in dual. How much is actually translated to fps will depend on cpu speeds, resolution, detail settings, gpu power etc. You could see 0fps or upto 20fps easily.
 
Solution
Faster RAM does not make much difference to gaming performance. Maybe a tiny bit even if it is. Doesnt matter if you have 2133mhz or 2666mhz, you wont see any significant FPS difference. Where RAM speed matters is non gaming tasks, specially if you use softwares and apps which make use of RAM and sometimes in overclocking.

http://lifehacker.com/when-ram-speed-matters-and-how-it-affects-your-games-1436679680
https://www.pugetsystems.com/labs/articles/Breaking-the-Hype-of-High-Frequency-RAM-142/page4