Would the i7-6850k Benefit from 3333mhz RAM?

The Final Slice · Sep 15, 2016

I was planning for a future build to include the i7-6850k CPU. It's recommended RAM speeds are DDR4 2400/2133. My motherboard will be an Asus ROG STRIX X99 GAMING ATX LGA2011-3. It can support memory speeds from DDR4-2133 / 2400 / 2666 / 2800 / 3000 / 3300 / 3333. Since this is going to be an all-out build (And far in the future), I was debating whether or not to buy RAM at 3333mhz speed, since my motherboard can support it. Is there any benefit in doing so since my CPU recommends 2400mhz as it's max, or would I just be wasting money? Another small question, is there a CPU out there that is recommended to run RAM at a speed of 3333mhz?

Thank you in advance,
The Final Slice

Kevern_11 · Sep 15, 2016

Kind of a waste, RAM speeds aren't very noticeable unless using an iGPU or APU.

The Final Slice · Sep 16, 2016

Kevern_11 :

Alright, thank you for the quick reply!

Tradesman1 · Sep 16, 2016

Do you plan to OC the CPU? Faster DRAM will show improvements in performance depending on what you do with the rig. For X99 I normally suggest about 3200 as the max as higher can be more of a strain on the X99 CPUs

The Final Slice · Sep 16, 2016

Tradesman1 :

I do plan on Overclocking the CPU and the GPU. What would you suggest as the max RAM needed for the i7-6850k?

Tradesman1 · Sep 16, 2016

3200 and for best performance a CL of 14, am planning an X99 and just grabbed a 64GB 4x16GB set of the TridentZ in that (3200/14).

KINETICREIGN · Nov 17, 2016

The Final Slice :

According to the specs (i7-6850k) RAM support is specific to the CPU, NOT the motherboard.

I'm also researching this same answer for the same build x99 ROG STRIX with the intel i7-6850k.

If you notice the specs of the CPU i7-6850k it says it ONLY supports *Memory Types DDR4 2400/2133*

The specs on various x99 boards will support: 8 x DIMM, Max. 128GB, DDR4 3333(O.C.)/3300(O.C.)/3000(O.C.)/2800(O.C.)/2666(O.C.)/2400(O.C.)/2133 MHz Non-ECC, Un-buffered Memory

However, my direct question is will the i7 6850k PROCESSOR actually support higher freq? Will the board tune the RAM with the CPU even though the freq isn't listed as supported by the CPU?

Shouldn't the support be matched on both CPU and MOBO? Not just the MOBO?

Tradesman1 · Nov 17, 2016

Yes, 2133/2400 is nothing more than the base spec of DDR4 for the CPU. Generally speaking from about 2800 on up (depending on the individual 6850K) may require a bit of a CPU OC

KINETICREIGN · Nov 18, 2016

ASUS OC Socket utilizes extra pins to connect a proprietary circuit to contacts found on land grid array (LGA). Combined with the customized UEFI, this exclusive feature enables higher DDR4 memory frequencies, lower latencies and enhanced stability while overclocking, extending all the way to extreme overclocking conditions, such as liquid nitrogen (LN2).

Test:
I just built a M VIII HERO with the i5-6600k (skylake) DDR4-1866/2133. I used Corsair V @3600mhz. Without OC... the board and UEFI tuned the RAM @2133mhz.

Conclusion:

I concur that yes, unless you OC the i7-6850k (broadwell e), it will tune the RAM to 2400mhz and the rest of those frequencies will only be used by UFO's and Alien communication.

The Final Slice · Nov 22, 2016

Thank you very much. So in conclusion, 3333mhz RAM will be compatible, it will just be automatically tuned down to 2400mhz UNTIL I overclock it as far as I can? Assuming I can only go so high, would I better better off with a native 2400 / 2800, or would the lower-than-native mhz on the 3333 be just as fine?

By the time this is overclocked, it will take off into the stay expanse like a UFO. Haha

Tradesman1 · Nov 22, 2016

When first installed - all DRAM goes to the mobos default. From there can simplay try enabling XMP which pulls the data off the SPD and trys to set the DRAM to those specs - if too high for the individual CPU (mainly it's MC (memory controller) ) then from there you can try adjusting data rate by manual manipulation of the timings/voltages and/or OC of the CPU to help the MC

The Final Slice · Nov 22, 2016

Thank you, when I get a hold of all my components, I'll install the 3333 and see how everything works once I try OCing the CPU.

Tradesman1 · Nov 22, 2016

Keep us updated

The Final Slice · Nov 23, 2016

Sure thing, thanks for all the help! Just so you know though, it may be a while.

Tradesman1 · Nov 23, 2016

No worries, Been here awhile now and probably will continue

The Final Slice · Nov 25, 2016

That's cool, thanks! See you around!

Tradesman1 · Nov 25, 2016

Have a gud 1 !

Would the i7-6850k Benefit from 3333mhz RAM?

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