BSOD After using ASUS Sabertooth 990FX MOBO OC Utility.

What you linked to is probably what you have. On cpuz, the memory tab shows what it is actually running at. The SPD tab shows the different frequencies and timings it can run at. If it has an XMP value, that will show you what it can do, but XMP is an Intel thing. With AMD it has to be set that way manually. In CPUz, if you were looking at the 'max bandwidth' section, that just tells your motherboard what it can start it at so you can get into bios to set the proper values. It does not mean that is actually the max bandwidth. On the side of the ram sticks is a white sticker which will show you the frequency, the first 5 timings and the voltage to set in your bios.

Good job on the Prime run.

They are both the same thing. DDR3 is double data rate, so it reports 800 which means double or 1600MHz as it should be. I realize when you first hear it, it's confusing but after a while it's not so bad. But, CPUz posts double data rate which is 2 X 800 or 1600. (give ot take a couple of numbers at times) So, if the memory tab was to say 667, that would mean it's running 1333. gangiry will be on in the morning to us. He is in the UK and it is 6 hours ahead of us. He knows a lot about AMD boards, I don't. I can help you with some basics such as CPUz and running tests, but he needs to give you specifics. He may want you to run memtest again. Once you change ram frequency, timings and voltage, that changes a lot. Or he may not. But, to overclock properly, you spend many hours running stability tests. It is not a set it and forget it thing. All CPus and motherboards are different, even same make and model. So every board and chip will need different settings. That's why you run so many stability tests, to see if it needs tweaking a little. You have to be very patient to overclock properly and never use the software the manufacturers give you. Overclocking is not for the faint of heart.

Just burn the ISO to a cd (burn as an image file) then boot your cd/dvd and let it run overnight. Post your results.

There are 2 tests. Be sure to use memtest86+ and not memtest. Most of us would agree on that. There are several versions. The .ISO file, put a blank CD in your drive and double click it. Windows image burner will come up unlless you have other image burning software. Burn it to the CD, then boot from the CD and it will start automatically. It will take quite a few hours to run a full test. I always run at least 8 passes. Each pass consists of 10 tests. Each pass tests something different. It takes about 8 passes to run a full test. If you see an error you can stop, the test failed. We'll tell you what to do then. I usually run it overnight. I start it and go to bed, let it run all night. When you get through, keep the CD. You will need it often. They also have a version which will burn it to a USB flash drive. You can use the one time boot key or set bios to boot from the DVD first and hard drive second. Either way is OK. I'm not sure what your one time boot key is, but I have an Asus board and it is F8. When you see the asus logo start tapping F8 and you will se a list of every bootable device on your computer. Use the up/down arrows to highlight the one you want and press enter. You may already know that, but just in case..... But either way you want to do it is OK. On another note. Before you really start overclocking read your manual and find the ways to reset CMOS, you may very well need to know.

Morning folks! Sorry for the delay

Cheers Steve, You explain things so much better than i can. Fancy a job as my translator?

Regarding AMD and XMP
Asus boards have implemented a way of applying the xmp profile with a setting called D.C.O.P.
In your bios on the extreme tweaker tab if you click the AI Overclock option you can set either maual, offset or D.C.O.P. If you set D.C.O.P you can then select the xmp profile for your ram.
Demonstration of D.C.O.P
I've never actually used this setting though and just apply the timmings manually.

huonub just a heads up regarding AMD temp's.
In an earlier post you stated that your cpu temp never goes above 34c and idle around 12-16c.
Unless your ambient temp is about 5c then this is pretty impossible as you can't cool below ambient on air cooling unless you live in a fridge or other super cold place
AMD cpu's have some wierd way of messuring temps and it's basically some calculation of mulitple numers. To get your idle temp you check the socket temp which will just give you a rough idea,
Look at the core temp for load temp's but this will only be accurate from about 40-45c and up.
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Have a read of this which explains it a lot better than i can. AMD Temp Information and Guide

If everything is stable at stock settings and your ram at its rated settings then you can move on to overclocking your cpu. Change the Windows Power profile to performance.

If you haven't already saved the current bios profile the do so as if you need to clear the cmos yu can just reload and carry on where you left off.

Go into the TOOL tab in your bios and select "Asus oc profile".
Enter a name for the profile,
Enter the number if the profile position you want to save to and click enter.
Hit enter again to save it.

Next you want to go into the "Advanced" tab and select "Cpu Configuration" and set all to disabled.
Cool n Quiet
C1E
SVM(Unless needed for running a virtual machine)
Core C6 State
HPC Mode(currently testing enabled)
APM Master Mode



Hit "F10" "Enter" to save and exit and reboot back into the bios


Next go into the "Extreme Tweaker" Tab and set the following as a starting point.
"AI Overclock Tuner"set to Manual.
Cpu ratio = 21 for a cpu frequency of 4.2Ghz as a starting point.
AMD Turbo core technology = Disbaled
Cpu bus/peg frequency = 200
Cpu/nb frequency =2400
Ht Link frequency =2400(Bulldozer likes Cpu/nb,HT LINK to be same where Piledriver/Vishera likes higher HT link)

Scroll down to "CPU & CPU/NB Voltage mode and select "Manual"
Cpu manual voltage = 1.4v(The actual voltage applied will be slightly less due to v-droop.
Cpu/NB manual voltage =1.2v(Never leave this set to auto when overclocking on Asus motherboards as it will give way too much voltage).


Scroll back up to " Digi+ VRM/Power control" "Enter".
Set Cpu and Cpu/nb Loadline callibration to "high"
CPU Current Capability =130%
CPU/NB Current Capability =130%
CPU Power Phase Control = Optimized
CPU Power Duty Control = T.Probe

Hit F10, Enter to saved and exit to reboot into windows.
Open HWINFO64 or whichever software you are using to monitor temps(ONLY ONE) and run 20mins of Prime or 5 passes of Intel Burn test. If you crash,bsod or your system just freezes just go back in the bios and raise the cpu voltage by 2 increments.
Reboot and stress test again.
If it passes without crashing or anything then go into the bios and raise the cpu ratio by 1 increment, reboot and test. then it's just a matter of rinse n repeat untill it either crashes or your happy with the overclock. Once you reach an oc you're happy with run your stress test for a few hours if using prime.

REMEMBER TO KEEP AN EYE ON THOSE TEMPS. 62c IS THE MAXIMUM RECOMMENDED TEMP FOR THE CPU CORE AND 70c FOR THE SOCKET. DO NOT GO OVER 1.5V.

If you have any problems or there is anything you're unsure of just ask

Have fun!

Okey doke! Is your memory 1 single 16Gb kit with 4 sticks or did you buy 2 seperate 8Gb kits? It can cause problems if running 2 seperate kits.
Go into the advance tab of your bios, Select North Bridge and then go into Memory Configuration and check if a setting called Memory mapping(can't remember exact name) is enabled. If not enable it.
If it is already enabled then try raising your Cpu Vcore or Cpu/nb voltage a couple of increments. It will take some trial and error.
I'm not too clued up when it comes to memory though so somebody else may have to chime in for that.

If any of that help's get the full 16Gb showing and it has passed memtest then you won't need to run memtest again unless you overclock your ram. If after you memory is stable and Prime finishes ok you can up your cpu ratio untill it fails Prime. When it fails just raise the Cpu Vcore a tad. For 4.5Ghz using a cpu ratio of 22.5 you should be looking around the 1.440- 1.452v mark but all Cpu's are different and yours may take more or less.

I'm off to bed now though mate, knackered! No doubt i'll be up at silly o'clock though so i'll check in as soon as