F3-2400C10D-16GTX and gigabyte GA-Z87X-UD4H - i7 4770K IMC/system agent voltage

[mgbnetworking]

as far as im aware xmp profiles should set the imc/system agent voltage. however in mycase it just doesnt. so my question is... what should the IMC/system voltage agent be? atm i have mine set at +0.150. also should the analogue/ digital I/O be upped a tad.

my board for these voltages give offset values. i think thats maybe why the xmp work work with the imc... i could be wrong though.

thanks
mark

[emissary42]

Most boards ignore profile voltages for IMC and autotune those themselves. The amount of added voltage for SA and VCCIO(A/D) varies from CPU to CPU. There is no generally "right" value, you have to find that yourself. Some people like to start at +0.100V and if stable reduce the offset in steps of -10mV for all three voltages (and likewise raise the offsets if unstable).

I personally started way lower with my 4670K & Z87X-OC for DDR3-2400, at +0.050V (SA), +0.025V (IO-d), +0.025V (IO-a) and could reduce the offsets even further (to +0.036/+0.018/+0.018).

It is a bit of work, but i am somewhat temperature limited with air cooling, so every bit helps.

[GSKILL TECH]

the i7-4770K CPU does not need much, you can see what the system sets it to with AUTO settings and work from there to manually input it.

[mgbnetworking]

Ok guys thanks for that. I tried it set at 0.036/ 0.018/ 0.018. Seems rock stable at that, so all's good
Cheers

Mark

[emissary42]

Very clever, i am glad it worked out taking that shortcut