Cant get CPU voltages to increase on Zotac 9300

From what I gather the BIOS will only allow you to change the CPU voltage within a very limited range (1.10, 1.15, 1.20, 1.25). There is a modified one around, which allows slightly higher RAM and NB voltage, but I am not sure if I can link to it.

Easily found using Google.
 
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Yes that is the board.

So I presume my chip stock is 1.25v so I should be able to increase it to 1.55v?

It seems I change these settings but they don't apply.
 
I am not sure of the actual stock voltage, sorry. I am going by what's in the product specification. Have you disabled SpeedStep (EIST) etc. in the BIOS?

It seems most people on the net would like to undervolt it and haven't been able to (Zotac have no intention of including it either), what CPU are you using?
 
You can undervolt on the newer PCB 4 version of the board I have. The CPU I am using is the E5200 and cannot find a setting in the bios called EIST.

Thanks
 
Spooter said:
You can undervolt on the newer PCB 4 version of the board I have. The CPU I am using is the E5200 and cannot find a setting in the bios called EIST.

Thanks
Click to expand...

I take it the undervolt is -0.1v mentioned in the spec. You know should be able to work out what the stock setting is using this - find the setting that is 0.1 above the minimum or alternatively -0.3 below the maximum.


When you're checking the voltage in Windows has the reported multiplier changed? I imagine the voltage would drop proportionately to the multiplier if it was being throttled.

You should have an option called C1E try disabling that.
 
Hello,
I have got question to "Spooter" :)
Have you sorted out the problem with Zotac 9300 CPU voltage adjustment ?

I just build the PC from my old components which I had in ATX size PC and I put most of that in to ITX case. But have got now the same problem as you had some time ago with this ZOTAC 9300 board :(
I put C2Q Q9550 processor on to this board and no matter what option I change under BIOS the CPU Voltage stays the same :/ ( 1,125V )and with this I can only overclock it to 3,05 Mhz (which is not realy big increase to the stock 2,85Mhz :/ )

Only when I switch on/off C1E function the Windows changes automaticaly procesor multiplier and drops voltage to 1,0 V so the CPU goes down to 2,0 Mhz.
With this C1E function off the CPU voltage stays on 1,125V.
It is strange becasue the default voltage that I had on previous motherboard was 1,25V (DFi motherboard) and I could get of that CPU 3,95 Mhz with 1,35V.
I do not expect this ZOTAC 9300 to go as high but I should easily get 3,5 Mhz with it if I colud rise the CPU voltage somehow :( especialy when this ITX build is water cooled and I have only 40 degree on full load on 3,05 Mhz on CPU.

PC is stable, no crashes, blue screens etc. just that thing with CPU voltage realy is anoying as there is clearly option for to make those changes in BIOS but looks like it does not work :/ and from what I found out digging in the internet there is a lot of ussers that can adjust this whithout a problem.

Could this be up to the CPU itself ?
But this CPU I have got there is different from that one Spooter was useing on his mobo :/

I even tried to update the BIOS but there is no diference after this at all :/

The mobo version is ZOTAC 9300 WiFi G-E (has got 3 SATA ports).

Please let me know if you managed to rise the voltage when you had this set up.

Thanks :)
 
No one is going to help me with this Zotac problem ?
I emailed Zotac support team as well. No help from them either.
I guess I won't be buying anything labeled ZOTAC next time as this kind of problem I have never had with any motherboard in last 15 years, and I biuld good few PC's since.
 
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