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Windows 7: How fast should be NB Frequency?

15 Nov 2013   #1

Windows 7 Ultimate x64
How fast should be NB Frequency?

I have 2x2GB DD3 1333mhz Kingmax RAM and I see the NB Frequency at 1597mhz(1600mhz) and i want to know how much should be this NB Frequency.

P.S:I heard it should be 3xDRAM Frequency(667mhz).

My System SpecsSystem Spec
15 Nov 2013   #2

7 Pro x64, 10 Pro x64

its actually MT and not mhz but people say mhz and to answer your question your motherboard is slight OC'ing that RAM to 12800(1600) instead of its rated 10600(1333) speed which if its stable is fine. you get your sticks speed by doubling its speed so a 1600 stick runs at 2x800 mhz to give you that speed. its confusing i know. if you look at your memory in cpu-z like i posted below you can get an idea for what your memory supports and what it is at?

Taken from my post on a lenovo forum:

heres mine for reference> CPU-Z :you can see in my shot that it shows what its currently at. my NB actualy shows what it is at real time because mines a little nicer of a motherboard thats all. Also cpu-z seems to read some speeds funny as for mine its says its 10700 under SPD when its really 17000. this is because it does not read my XMP profile. Here is a more detailed picture of my ram info to give you an idea> AIDA64

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How fast should be NB Frequency?-daevnuh.png   How fast should be NB Frequency?-161revr.png  
My System SpecsSystem Spec
15 Nov 2013   #3
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot

Quote   Quote: Originally Posted by Jezuz View Post
I have 2x2GB DD3 1333mhz Kingmax RAM and I see the NB Frequency at 1597mhz(1600mhz) and i want to know how much should be this NB Frequency.

P.S:I heard it should be 3xDRAM Frequency(667mhz).
My memory runs at 800 MHz (DDR3-1600) and my NB at 2200, so the 3X rule is not true.

Your motherboard will set your NB frequency to a default which is suitable for your processor and memory. I don't suggest changing it unless you're prepared to do a lot of trial and error, and you don't mind running the risk of burning out your CPU sooner. A lot of overclockers adjust the NB to get more memory throughput, however, they usually have to adjust the NB voltage upwards, too. This can prematurely wear the CPU (especially AMD chips when sometimes the NB is in the CPU package) and it may require active cooling on the NB if you go too high.

I suggest that you leave the NB clock alone, unless you're going for a serious overclock. The default setting is usually more than adequate for the RAM in use.

its actually MT and not mhz but people say mhz
A Northbridge is actually measured in MHz, just like your CPU and HT clock.
My System SpecsSystem Spec


 How fast should be NB Frequency?

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