Why DDR4-3000MHz when i5-6600k only supports DDR4-1866/2133

[Zetsumei]

In the Build of the Month May 2016 there is DDR4-3000MHz included in the Unicorn build. But I read that the i5-6600k only supports DDR4-1866/2133. I did also read something about XMP (don't fully understand it).

Will XMP on a Motherboard do the work automatically or do you need to tweak something in the BIOS to get the full potential from the DDR4-3000MHz?

I would be very happy if someone can explain this for me.

[Deleted]

It depends on the motherboard, you can run the RAM but it will only run as fast as the motherboard allows.

[Evildeffy]

It depends on the motherboard, you can run the RAM but it will only run as fast as the motherboard allows.

Correct but of course it also depends upon the IMC of the CPU if it can tolerate higher speed RAM or not.

On average Skylake can take 3200 - 3600MHz no problem but you could be screwed and get 2133MHz max as well.

[DeltrusDisc]

I must say, I've been pondering lately whether I should feed my 5820k a faster setup of RAM... Using DDR4 2133 but I realize I could go for higher.

What do youuuuuuuuuu guys think? Would Adobe Lighroom benefit?

(Yes, I, Deltrus, DON'T know everything. Much to the shock of some people here...)

RAM isn't one of my more understood parts, specifically the benefits of faster clocked RAM. If it would actually benefit me in Lightroom, video editing software, etc, I'd probably upgrade, no lie.

[Evildeffy]

I must say, I've been pondering lately whether I should feed my 5820k a faster setup of RAM... Using DDR4 2133 but I realize I could go for higher.

What do youuuuuuuuuu guys think? Would Adobe Lighroom benefit?

(Yes, I, Deltrus, DON'T know everything. Much to the shock of some people here...)

RAM isn't one of my more understood parts, specifically the benefits of faster clocked RAM. If it would actually benefit me in Lightroom, video editing software, etc, I'd probably upgrade, no lie.

You suck Deltrus!

No you would notice 0 benefit with Haswell-E, this has been tested before.

If you had Skylake it would matter for games as there's a tangible benefit in faster RAM for them but this seems to be mostly, if not entirely, irrelevant for prior architectures including yours!

Maybe at some point you'll get on my level Mr. Double-D

[Lathais]

I must say, I've been pondering lately whether I should feed my 5820k a faster setup of RAM... Using DDR4 2133 but I realize I could go for higher.

What do youuuuuuuuuu guys think? Would Adobe Lighroom benefit?

(Yes, I, Deltrus, DON'T know everything. Much to the shock of some people here...)

RAM isn't one of my more understood parts, specifically the benefits of faster clocked RAM. If it would actually benefit me in Lightroom, video editing software, etc, I'd probably upgrade, no lie.

Isn't 2133 like the 1600 of DDR3 where all DDR3 RAM was just factory OCed 1600 RAM anyway? Could you not just OC your 2133 RAM and see if it makes a difference? If it does help, just leave it OCed, it would be the same thing as buying faster RAM, you just don't have to manually OC it.

[DeltrusDisc]

Actually 2133 DDR4 is the equivalent to 1333 DDR3, or even 1066, considering 1600 DDR3 wasn't the original speed. I feel like there might even be slower DDR3 speeds, though...

My RAM isn't exactly the top-notch (Crucial's cheapest haha) so I really don't know if I want to try OCing it. Plus no heat-spreaders, BECAUSE THEY'RE SO NECESSARY. YA KNOW, RAM SURE GETS HOT NOWADAYS. lul.

[Zetsumei]

It depends on the motherboard, you can run the RAM but it will only run as fast as the motherboard allows.

Thanks! That video was really helpful.

Everybody thanks

[DeltrusDisc]

Thanks! That video was really helpful.

Everybody thanks

So, I just looked it up and saw the price.

Nice to see prices have come down. That price actually surprised the shit out of me just now... 3GHz DDR4, from Corsair's Vengeance lineup, of 2x8GB.. for only $70?! Shit. To think my 2x8GB packs were $110 a year and a half ago. My word!

Maybe I'll upgrade just for shits.

Wait, there's better things out there. Okayyyyy...

[Butler to Baby Sloths]

The CPU spec sheet only mentions 2133MHz DDR4 because that is the JEDEC standard. The CPU memory controller is capable of much higher clock rates (you will need to set the strap to 125 or 150MHz for speeds higher than 2666MHz or 3000MHz respectively).

[DeltrusDisc]

Strap being the base clock, correct?

And then I have to fuck around likely with other things, too, yes?

[gegalfo]

Strap being the base clock, correct?

And then I have to fuck around likely with other things, too, yes?

thats where the fun starts though

[Remilia]

thats where the fun starts though

and the crashing.

but yes, Skylake only got certified for the maximum of 2133MHz, doesn't mean it can't run higher. Just think of it that it's always going to be guaranteed to work at 2133MHz, but anything above that is an overclock.

[Deleted]

Pretty lame actually, as skylake actually benefits more from faster RAM speeds than previous chips.
I think that at the moment the sweet spot is 2666, with performance and pricing in mind. But pricing might have actually come down more on the higher speed modules.

[Butler to Baby Sloths]

Strap being the base clock, correct?

And then I have to fuck around likely with other things, too, yes?

I think they unlinked the strap from the PCI-E clock timer in X99 and Z170.

But yeah, I got 2666MHz RAM so that I don't have to think about that stuff

[gegalfo]

and the crashing.

but yes, Skylake only got certified for the maximum of 2133MHz, doesn't mean it can't run higher. Just think of it that it's always going to be guaranteed to work at 2133MHz, but anything above that is an overclock.

well you are doing it wrong then

[Remilia]

well you are doing it wrong then

I very well am, lol. I don't bother tinkering with memory now. >.>

[Sorshen]

There are modules up to 4266/4400 from Corsair/G.Skill afaik.
Modern games like faster ram on Skylake: http://www.eurogamer.net/articles/di...-core-i5-2500k

[IsaacnM]

Notably, its CPU specification sheet notes the 2133MHz DDR4 due to JEDEC standard. However, it can give better clock rates if you set the strap set to 150/125 MHz if you’ll have speeds over 3000MHz or 2666MHz

- - - Updated - - -

Notably, its CPU specification sheet notes the 2133MHz DDR4 due to JEDEC standard. However, i5-6600k motherboard can give better clock rates if you set the strap set to 125/150 MHz if you’ll have speeds over 3000MHz or 2666MHz

Infracted for thread necro. - Cilraaz