Calculating FSB Ratio

[tolagarf]

I'm looking to exchange my memory (currently Corsair DDR4-2400 CL14) since the current ones for some reason hate my guts. But I can't run my memory at 125 MHz FSB, since this will make my CPU run quite a bit hotter with this Noctua NH-U12S cooler. And I'm wondering which memory to get that will operate best with my i7 5930K.

I tried looking for websites that can calculate the FSB Ratio of RAM, but the only one I found was last updated in 2011, so I'm not sure it's up to date on DDR4 memory. What I'm looking for are speeds that run 100 MHz on the FSB, because from what I can gather this is what my CPU operates best with.

Also I'm considering SLI down the road (instead of upgrading every year), and I know that memory with high speeds can give a huge FPS boost in this case. So I'm trying to figure out the 'sweet spot' if you will.

Edit: Sorry I meant the boot strap which is 100 for 2133 MHz and 2400 MHz.

 

[tinytomlogan]

Depends on the CPU and youve not said ANYTHING about your system specs.

probably means your CPU cant go that high really.

 

[tolagarf]

Depends on the CPU and youve not said ANYTHING about your system specs.

probably means your CPU cant go that high really.

Ehm sorry

i7 5930K CPU @ stock
ASUS X99-E motherboard
Corsair DDR4-2400 4x4GB CL14 RAM
EVGA SuperNova P2 750
EVGA GTX 1080 FE @ stock

I have used 2800 MHz RAM before with this CPU (across two different motherboards) at 125 strap, but as I mentioned it will make the CPU run hot unless I mess around with adaptive voltage. A strap of 133 it won't do at all, tried that with my current RAM which have a XMP profile for 2666 also. Nothing will make that happen as I tried everything I possibly could.

 

[tinytomlogan]

Its just the BCLK - I doubt your CPU will do 125 without a mega low multiplier (if at all)

Just remember 40x100 = 4ghz --- 40x125 = 5ghz

If you change the strap you change the clock.