What memory set to choose 8x8gb or 4x16gb for a 5820k?

[seba_1]

Hello,
I want to make a new system and I have a doubt about what memory ram to get to make a total of 64GB:

Processor
Intel Core i7-5820K 3.3GHz 6-Core Processor
Motherboard
ASRock X99 Extreme4 ATX LGA2011-3


My options are :
1.To get a kit of 8x8 GB ram.
1 x {Kingston HyperX Fury Black DDR4-2133 288-pin DIMM 14 8x8GB 64GB}

2. To get 2 kit of 4x8GB ram.
2 x {Crucial DDR4-2133 288-pin DIMM 15 4x8GB 32GB}

3.To get 1 kit of 4x16GB ram (this is more expensive than the previous ones).
1 x {G.Skill Ripjaws V Series DDR4-2400 288-pin DIMM 14 4x16GB 64GB}

Would any of these points work without any problems ?

About point 2, is there any problem to get 2 different kits to fill the 64GB ?
About point 3, this option would allow me to expand to 128GB in the future, but given that I'll get the new kit in the future, would this be a problem to get a different kit and fill the 128GB in the future?

 

[Tradesman1]

4x16GB would be less stress on the MC (memory controller) than 8x8GB

No guarantees when mixing sets of DRAM - even with 2 identical sets - always best to get all you want in a single package - the forums are filled with threads of folks getting two sets and them not playing together

 

[seba_1]

So according to what you say, if we discard point 3, would you suggest option 1 as the best between option 1 and option 2 for the 64Gbs,


option 3 > option 1 > option 2 ?

 

[Tradesman1]

I'd go 4x16 over 8x8

 

[seba_1]

Ok, let's say now you don't intend to overclock the machine, would you still go for the 4x16 considering it's around 150 dollars more expensive to get this set than the 8x8?

 

[Tradesman1]

Yes, going 8x* adds more stress to the MC thus the CPU so it can affect the processing at stock or even with an OC and if you do OC 8sticks can in part limit the OC

 

[wicked_sticky]

on that board using 4 sticks vs 8 sticks will have no bearing on performance.

I personally would not pay extra to get a 4 x 16gb set up.

In 2 years 128gb ddr 4 kitts will cost not much more as much as 64gb kits cost now plus you can sell you current kit if you want to upgrade later

99.5% chance you wont have any problems mixing two identical kits if you buy them years apart. You probably wont even have problems buying 2 different brands with the same voltage speed and timing (timings wont be 100% identical between brands but it will down clock to the slower speed.

Are you in the US? You should be able to get a 8x8gb kit of DDR-2400 for $330 and DDR-2133 for $320 (I would pay upto 10% more for the faster speed)

 

[Tradesman1]

on that board using 4 sticks vs 8 sticks will have no bearing on performance.

I personally would not pay extra to get a 4 x 16gb set up.

In 2 years 128gb ddr 4 kitts will cost not much more as much as 64gb kits cost now plus you can sell you current kit if you want to upgrade later

99.5% chance you wont have any problems mixing two identical kits if you buy them years apart. You probably wont even have problems buying 2 different brands with the same voltage speed and timing (timings wont be 100% identical between brands but it will down clock to the slower speed.

Are you in the US? You should be able to get a 8x8gb kit of DDR-2400 for $330 and DDR-2133 for $320 (I would pay upto 10% more for the faster speed)

_____________________

99.5% sounds awful impressive. Do you have a basis for this statement? Might read through the forums, plenty of threads of people buying a couple of identical sets to save a few bucks off a four stick set, which cost more before it takes more testing to come up with 4 sticks that will all play nice - let alone 8 sticks. And yet you claim 99.5 % when years apart, at a time the sticks have been made with different PCB lots, different chips, even different solder? Interesting that DRAM makers would recommend against mixing package (which to a degree you can claim understandable for sales purposes, but it's a more a thing they don't want to have to deal with additional RMAs, as is the far majority of 'bad' sticks RMAed are actually perfectly good, people have tried to mix them with other sticks and people have no idea how to set up DRAM to run to spec.

It was sort of with claims like you make here and teh simple fact that DRAM is probably the least understood component in a rig that led me to write the DDR: FAQs and Fiction article for TomsHardware, the thread below has links to both parts:

:http://www.tomshardware.com/answers/id-2741495/ddr3-faqs-fiction.html

 

[wicked_sticky]

You're right I'm making those figures up using personal experience. Of the dozens of systems I built the only time I've had issues is with generic brand motherboards.
I elite group brand motherboards are finicky with mixing 2 different brands.
I've never ever had issues using the same exact model ram that came in separate packaging. Never had issues mixing bra do on Asus asrock msi or gigabyte boards.
Yes I've read forums where the odd person has issues hence there isn't a 100% garuntee.

There is some tiny chance that a mfr completely changes the pcb and solder process mud production run all the scenario listed in the links are possible, you have to be incredibly unlucky to get 2 dimms so drastically different they are incompatible. You will see 2 different brand ram that seem identical and though the CAS is the Same some of the other timings are not, and you must manually set them.
It's also why we run me test when we upgrade someone's ram we garuntee the work.

When your mixing ram, don't let the bios automatically set the timings, set it manually to mfr specs (this is a good idea no matter what).

And yes more sticks of ram uses more voltage on the controller but with 8 vs 4 dimms that difference is not much and it is designed to handle it.

You can always play it safer with getting 1 kit. There is always a chance of incompatibility but it really is too small to worry about.