About a month ago I brought a new 990XA-UD3 Motherboard for my system to serve as a upgrade later option. It works fine on default BIOS settings but if I try to overclock through the BIOS it does something really odd with the clock speeds on each core.
Core 0 will run at the new OC @3.7GHz but Cores 1 to 3 will only run at factory 3.5GHz whilst the OC has been set.
I'm use to the keyboard BIOS and the new motherboard has Gigabyte's new UEFI BIOS. So can anyone help please?
What settings are you messing with inside the bios? You don't tell us. So are you leaving everything on and just boosting fsb or what? Include as much info as possible to troubleshoot.
I will look when I get in from work as I can't remember off the top of my head.
Try to avoid using the Hypertransport BUS, use the multiplier and up the voltage a little bit. But aim for the lowest possible voltage
Rip it out and sell it, it's not good for oc:in.
Afaik APM aint supported/cant be configured which leads to throttling... I had the same board for one evening, then I bought a new one. :P
These are the settings I have/changed: (Italic font is Stock settings)
CPU Clock Ratio: x18.50 (Stock: x17.50)
CPU North Bridge: 2200MHz (Stock: 2000MHz)
CPU Unlock: Disabled
Cool & Quiet: Enabled
CIE Support: Enabled
SVM: Enabled
CPU core Control: Auto mode (Auto, One, Two, Three core's per processor)
CPU Vcore: + 0.025V
NB core: +0.025V
I've got another concern along with this. Core 0 runs 3c below 1, 2 & 3 in CoreTemp. And that's the Core that is showing up as being overclocked to 3.7GHz whilst the other are at factory 3.5GHz but in the UEFI it shows all cores at 3.8GHz and the running temp is 37c.
The ud3 mobos have a fair amount of vdroop it can be fixed by enableing load line calibration (LLC) at the 'extreme' seting that will probably get the cpu more stable.
I will have a look but this new GUI isn't exactly clear about what each setting is doing unlike my old Motherboard was.
I can't see anything in the UEFI labled LLC!
Look under 'Advanced'. Its called 'Load line control' on there mobos
M.I.T \Advanced Frequency Settings\Advanced CPU Features
CPU Clock Ratio
CPU Unlock
Cool & Quiet
C1E Support
SVM
CPU Core Control
- Automatic Mode
- One core per Processor
- Two cores per Processor
- Three core per Processor
These are the only options I have.
Well seeing as I'm not getting anywhere with this. Can someone point me in the right direction of some software to monitor temps and clock speeds that is better than CoreTemp & CPU-Z please.
Hi there thought I'd create an account to help answer your questions and problems.
Because I don't know what else you've done inside the CPU BIOS section and possibly memory timing, I'd suggest reset BIOS, Turning off Cool & Quiet
Leave the FSB stock 200 and only change the Multiplier. With my 4 year old AMD Phenom II 955 X4 BE. It was safe on 20 x 200 = 4Ghz with voltages between 1.4v to 1.5v and nothing over 1.5volts. Make sure it doesn't go above 62 degrees (celsius) 143.6 (fahrenheit) For this, use 3rd party cooling and not stock.
I never touched the North Bridge.
Ram timing I found 1333MHz @ 7-7-7-20 1T 1.6v stable, I chose 1333MHz because it was faster overall.
to be Clear: CAS Latency 7. tRCD 7. tRP 7. rRAS 20. Command Rate 1T
As for software, Everest Home Edition (freebie) give that a try, personally CPU-Z is all I need for when I'm first establishing a trial and error of stable overclocking.
Anyways, give it a whirl. If it goes down hill maybe do 200 x 19.5 and then 19.0 then 18.5 and so on.
Forgot to mention. On that particular board I've hit 4.5GHz with one of the Phenom 2 X4 CPUs (don't recall which) This was in 2011. Probably rev 1.x of that Motherboard. As for Automatic Fan Control for the CPU Heat sink, I let it always run full speed because I would want it always cool and ready for gaming.
Thank you. This is the UEFI rev 3.5 with UD4 features. It's stable @3.8GHz now but CoreTemp shows that it's throttling the cores apart from Core 0. Temps have sorted themself out now. I must of had a offset wrong somewhere.