cpu bus speed reduced

[jamdale]

I have noticed my cpu bus speed is very slightly reduced when I switch my ram to its xmp profile which the obviously slightly lowers my overclock. Is this normal?

 

[setter]

Ive noticed this too using xmp. Base clock at 99mhz and ram speed showing as 1197mhz in cpuz.

 

[robertchalmers1]

Yeah I get that as well and unsure why it is

 

[jamdale]

Yer that's the speed mine drops too. Strange. In the grand scheme of things it doesn't make too much difference but I'm just curious why.

 

[jamdale]

Actually setter I read somewhere that the ram speed shown in CPUz is halved. Which is why mine shows as 933 and yours shows as 1197. But I can't explain the cpu bus speed.

 

[setter]

Yep, double data rate. My ram is a 2400mhz kit. It also shows a few mhz less when oc'd to 2600mhz in bios. When in back on my system ill try with manual settings to see what it does.

 

[jamdale]

Yer I see what you mean. My cpu speed is annoying me now because i had the multiplier set to 43 but now my cpu speed is slightly under 4.3. I'm sure it doesn't make much difference but it's just strange.

 

[Bart_Hunt]

I have the same with my oced 4770k.
Cpuz shows it at 4197mhz.
I suspect it may be something voltage related.
I have the cpu oc at 1.2v, but maybe with 1.201 it would actually show as 4200mhz?
No idea what else could it be

Lets ask 8 Pack?

 

[robertchalmers1]

I have the same with my oced 4770k.
Cpuz shows it at 4197mhz.
I suspect it may be something voltage related.
I have the cpu oc at 1.2v, but maybe with 1.201 it would actually show as 4200mhz?
No idea what else could it be

Lets ask 8 Pack?

ive tried changing it but it doesnt work like that i either have 4397 ir 4406 but not a straight 4400

 

[wazza300]

xmp is a stored profile,so its possible it will adjust the bclk to suit

tried manually settingup the ram speed/timings/voltages and see if cpu bclk is affected?

manually set cpu clock to 100 aswell

 

[robertchalmers1]

xmp is a stored profile,so its possible it will adjust the bclk to suit

tried manually settingup the ram speed/timings/voltages and see if cpu bclk is affected?

manually set cpu clock to 100 aswell

yeah i tried all of that but still same results

 

[jamdale]

Yer same here.