Intel Core i7 5930K Haswell-E max memory help

[Bearo]

Hi all,

I'm looking to make a new build. I've got my eye on the new Intel Core i7 5930K Haswell-E cpu, to go with the Asus RAMPAGE V EXTREME Intel X99 Socket 2011-3 Motherboard. I planned to get Corsair Dominator Platinum 16GB DDR4 2800 MHz but decided to save a few quid and go for Corsair Vengeance LPX Red 16GB DDR4 2666 MHz as the performance difference doesn't justify the price difference.

My question is that this CPU and mobo is designed to support DDR4, but the specification for the CPU states "Max. Memory Speed: DDR4 - 2133Mhz". The lowest clock speed for DDR4 that I've managed to find was for some Crucial Value DDR4 sticks, all other DDR4 RAM is well over the maximum memory speed of this CPU.

Does this mean this CPU is not going to be compatible for me?

I currently have an intel 3770k and Corsair Vengeance 2133 mhz DDR3. I had to restrict it to 1600 mhz as that was the max memory speed for the intel 3770k and it was just BSoD'ing all the time until I did this.

Is it likely the same thing would happen with the new build?

Any advice is appreciated.

Cheers

 

[DubbleClick]

Not likely that would happen. They guarantee you the cpu will be able to handle ram at 2133 mhz, but it should also be able to handle ram speeds well beyond that. If cpu's were not able to, faster ram would not be produced.

 

[Bearo]

Not likely that would happen. They guarantee you the cpu will be able to handle ram at 2133 mhz, but it should also be able to handle ram speeds well beyond that. If cpu's were not able to, faster ram would not be produced.

That's true but as mentioned, I still had similar issues with my 3770k with 2133mhz RAM with its max memory support. I don't want to sink a large amount of cash into this build and have the same thing happen.

 

[DubbleClick]

As I said, it is very, very unlikely that this would happen.

On 3770k:
Did you set XMP on?
Did you enter the correct voltage?
Did you enter the correct timings?
Did your motherboard support memory that fast (thats what limits it, not really the cpu)?

However, even if the same thing happens, it's not like 2666mhz memory costs a lot more than 2133 mhz memory.

 

[DubbleClick]

Just don't go with corsair dominator platinums. For that price you could almost get 32 gb of other brand 2800mhz memory.

 

[Bearo]

As I said, it is very, very unlikely that this would happen.

On 3770k:
Did you set XMP on?
Did you enter the correct voltage?
Did you enter the correct timings?
Did your motherboard support memory that fast (thats what limits it, not really the cpu)?

However, even if the same thing happens, it's not like 2666mhz memory costs a lot more than 2133 mhz memory.

http://www.tomshardware.co.uk/forum/328720-30-memory_management-bsod

This was my thread about the original 3770k/RAM issue. The screen shots show I had XMP enabled, correct voltage, timings etc (on auto actually).

I had the same thread going on the Corsair community forums at the time, a member called peanutz94 was the one that suggested it might be max memory support that was causing the issue

It's true the memory doesn't cost a lot more between 2666MHz and 2133MHz, but I'd like to have the option of upgrading moving forward (3000+MHz).. it's piece of mind I'm after really.

I've seen some reviewer's using G.Skill Ripjaws 4 3,000MHz in there benchmarking rigs along with the 5960k and 5930k, so I guess it should be possible, unless of course they're running those sticks at lower speeds (but then what would be the point of that!)?

cheers

 

[DubbleClick]

Yes, it is indeed possible.
As for auto timings, that might have been the issue. When I enable xmp my 2400mhz ram doesn't like to run all stable. If I set timings and voltage (even 0.02v less than with xmp) manually, it runs smooth. I'm certainly not the only one with that issue.

So yeah, to reiterate, if those speeds wouldn't run, noone would produce that fast ram. 1600/1866 mhz is a good spot for ddr3, for ddr4 I'm not sure. What I'm sure about, though, is that we will see much faster mrmory floating around in just a few months. G.Skill already has a kit running at 4ghz.

 

[DubbleClick]

By the way, another suggestion. Stay awat from the asus board. No, not because it's bad, contrary, it's great. But doesn't offer more over the other high end x99 boards while being $200 extra.
There are not many reviews out yet, but performance apparently goes rather similar from entry level to high end. For sure, a sweet $250 board is enough.

Just stay away from the gigabyte boards. Although I own one myself and they are great on z97, on x99 they simply lack inexcusable features (M.2, hello) while being in the same price range. On z97 they offer great features for little price, on x99 little features, for great price.

 

[Bearo]

By the way, another suggestion. Stay awat from the asus board. No, not because it's bad, contrary, it's great. But doesn't offer more over the other high end x99 boards while being $200 extra.
There are not many reviews out yet, but performance apparently goes rather similar from entry level to high end. For sure, a sweet $250 board is enough.

Just stay away from the gigabyte boards. Although I own one myself and they are great on z97, on x99 they simply lack inexcusable features (M.2, hello) while being in the same price range. On z97 they offer great features for little price, on x99 little features, for great price.

Yes, I'm seeing a lot of other options now. This was a potential build, nothing is set in motion. I'm also considering waiting for the Broadwell-E chip next year. I've read in various places its a socket 1150 chip so I could just go for a current Z97 chipset board and a 4770k or even 4760k as temporary chip until the Broadwell is release and then upgrade. But then I've also seen today in some places online sources stated the Broadwell-E is an X99 socket 2011-3 chip.. so I'm not really sure what to do.

Ha.. decisions decisions.

 

[DubbleClick]

Broadwell (iX-5xx0(k)) will be z97, 1150 socket.
Broadwell-E (i7-6xx0k/x) will be x99, 2011-3 socket.
Broadwell-E might however still take a while, but if you can wait, that's good. Motherboard and Ram prices will probably drop by quite a lot, while cpu's stay on about the same level.

 

[Bearo]

Broadwell (iX-5xx0(k)) will be z97, 1150 socket.
Broadwell-E (i7-6xx0k/x) will be x99, 2011-3 socket.
Broadwell-E might however still take a while, but if you can wait, that's good. Motherboard and Ram prices will probably drop by quite a lot, while cpu's stay on about the same level.

Cool, thanks for the info!