X99 LGA2011-3 Memory Standards

[iruixos]

Sorry if this has been asked before (I did a quick search).

 

So, I was looking at this board: ASUS X99-A ATX LGA2011-3 X99 DDR4 SLI WiFi 4XPCI-E16 2XPCI-E1 SATA3 USB3.0 Motherboard

 

According to NCIX's product page, it supports the following memory standards:

• DDR4-3200/PC4-25600 (O.C.)
• DDR4-3000/PC4-24000 (O.C.)
• DDR4-2800/PC4-22400 (O.C.)
• DDR4-2666/PC4-21300 (O.C.)
• DDR4-2400/PC4-19200 (O.C.)
• DDR4-2133/PC4-17000'

 

I was also looking at this CPU: Intel Core I7-5930K 3.70GHZ Six Core 15MB Hyperthreading LGA2011-V3 Processor

 

According to ark.intel.com, it only supports:

• DDR4-2133
• DDR4-1600
• DDR4-1333

 

What does this mean? Can the processor accept RAM modules with speeds over 2133MHz? If so, does that mean it'll scale the processor speed accordingly?

[Deletive]

The processor will accept RAM higher, it'll usually depend on the mother about how much higher.

You don't need the i7 5930k over 5820k unless you're going to be using the extra lanes.

[MegaDave91]

I assume what it's saying here is: because 1333/1600 is standard for DDR3 - DDR4 at those speeds will also work with Haswell E. I believe 2133 is the standard for DDR4. 

[iruixos]

The processor will accept RAM higher, it'll usually depend on the mother about how much higher.

You don't need the i7 5930k over 5820k unless you're going to be using the extra lanes.

 

I wanted to leave some room for improvement as I remember someone from PCPer mentioning the 5930 had 40 lanes whereas the 5820 only has 28.

[Deletive]

I wanted to leave some room for improvement as I remember someone from PCPer mentioning the 5930 had 40 lanes whereas the 5820 only has 28.

Well unless you have 3 way sli plus extra pci-e cards I don't think you'll need those 40 lane. 

[iruixos]

Well unless you have 3 way sli plus extra pci-e cards I don't think you'll need those 40 lane. 

 

Touché. Either way, my main concern was the difference in stated memory standards

[Deletive]

Touché. Either way, my main concern was the difference in stated memory standards

Yep, basically if youre motherboard supports it your Intel CPU would probably have no problem running at that speed.

[bomerr]

2133 is the official standard of DDR4

 

Higher speeds require OCing the ram.

So a higher speed kit is factory certified to operate at the OC frequency. 

 

Motherboard support is kinda finicky for DDR4 which is why vendors are currently listing supported frequencies and even supported kits.