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Need help overclocking 1090T

post #1 of 15
Thread Starter 
Hey guys I'm really at a loss right now. As the title states, I have a 1090T but I'm having issues getting a stable and safe "appearing" OC at 3.6 (200x18.5). My problem is with the vcore. I've got the m3a770de Asrock mobo and if I set my vcore in the bios to 1.35 as soon as I boot into Windows cpu-z reports it at 1.38 idle which sounds kind of ok but if I run Prime95 the vcore shoots up to 1.4+, if I go for a heavier overclock such as 3.8 I will set the vcore to 1.36 in the bios and it is around 1.41+ at idle using cpu-z (or aida64) If I continue to put a full load on it with Prime95 the vcore once again shoots up and reaches about 1.44-1.45 and thats just wayyyy to high for me to be comfortable with for just a 3.8 OC. If I lower the vcore (to where I would ACTUALLY want it) in the bios Prime ends up erroring out due to what I'm assuming is the vcore fluctuating out of a stable range. I have even left prime running for 10+ hours with no errors but if I start smp folding the client crashes.

If I could get the vcore to stay where I set it I could throw a higher frequency on. Now here is the part that my question comes in. I've looked all over at what people have been able to do with these chips. People are getting 3.8-4.0+ on about 1.46 (or lower) vcore but their temps are often 50c. + after running prime. I am questioning my chips actual vcore because after running Prime95 for an hour or so my temps average around 45c. with cpu-z showing the vcore at 1.46. Ambient temp and varying heatsinks can account for a lot of this but my Frio has the fans on low (all the way low). Another downside is I can not find a single place on my mobo to use a multi-meter and I do not want to take it out of the case.

Cool and quiet, c1e, spread spectrum, and all that other junk is disabled, unfortunately this board doesnt have an option for Load Line Calibration or anything similair. Is it possible my vcore is lower than what cpu-z is showing? The bios certainly doesn't agree with what windows is showing. If it really is 1.46 is that safe for a 24/7 gaming and folding rig? I've read people saying that up to 1.55 is safe but I've always thought phenom II's redlined at 1.45.
Edited by Roll Cam Tide - 10/14/11 at 12:31pm
post #2 of 15
CPU-Z is not always 100% accurate. However, 1.5V on air is perfectly safe for Phenom IIs with a good cooler. I think your motherboard is limiting your ability to overclock your CPU. Just keep an eye on temps and stay under 55C.
post #3 of 15
Thread Starter 
What kind of temps do you get running prime at your 1.425?
post #4 of 15
Hell I ran an 1100t at 1.46v on air for MONTHS. 1.55v is max, I definitely wouldn't sweat being in the mid 1.4xv range as long as the temps are good. Keep core temps under 62c. 55c isn't the limit.

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CPUMotherboardGraphicsRAM
2500k 5.2 ghz 1.38v MSI Z77A-GD65 Gaming MSI Gaming GTX 970  16 GB Corsair Vengeance 
Hard DriveHard DriveOptical DriveCooling
Corsair SSD Sandisk SSD ASUS XSPC 320 
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Windows 10 64 bit 24" Asus 24" Asus 24" Asus 
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42" Samsung  Steel Series Merc Stealth Pro Corsair AX860 Corsair 800D 
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Logitech G502 JBL Studio monitors 
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2600k (4.5ghz/1.33v) Asus P67 Sabertooth GeForce GTX295 8 gigs Corsair Vengence 1600mhz 
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2 300g Seagate Barricuda's-Raid 0 Samsung Light Scribe DVD-RW Rasa 720 RX360, Swiftech QP320, Swiftech GPU bl... Windows 7 Ultimate 64 bit 
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post #5 of 15
Right now the system is 100% loaded folding at 47C. A max heat (small, in-place FFTs) prime test gets it up to 52-53C. I have very good air flow though.
post #6 of 15
Quote:
Originally Posted by Ihasfip View Post
Keep core temps under 62c. 55c isn't the limit.
The max operating temperature for Phenom Ii X6 is 55-62C. Most folks on OCN will recommend that you stay at 55C or below so that you don't have problems when your ambient temps fluctuate.
post #7 of 15
Thread Starter 
Do you have any guess as to whats causing cpu-z to show a much higher vcore than what I've set in the bios?
post #8 of 15
There is a margin of error in CPU-Z and your motherboard has poor power management. Even so, it's not really much to worry about as long as you are keeping your temps in check.
post #9 of 15
Thread Starter 
Right now I'm 20 minutes into a Prime95 run at 3.7 ghz 1.448 vcore, averaging 47 c. Not bad so far but I don't think I'll push it any farther though (Mobo might explode!!!)

Edit: I see that your a folder. Can you think of any reason that I can run Prime for 12 hours, run linx for like 2 hours on a large problem number (4 gigs of ram worth) and Aida64 stability test for 12 hours, all reporting NO errors but when I start my folding client (v7 beta) the a4 core eventually crashes???
Edited by Roll Cam Tide - 10/12/11 at 10:02pm
post #10 of 15
Quote:
Originally Posted by klaxian View Post
The max operating temperature for Phenom Ii X6 is 55-62C. Most folks on OCN will recommend that you stay at 55C or below so that you don't have problems when your ambient temps fluctuate.
I don't see how a max can have a range...thats what a max is. But regardless, I would have no issue with temps being in the upper 50s during prime95. Your pc will not see that kind of load in many other circumstances anyways.


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2600k (4.5ghz/1.33v) Asus P67 Sabertooth GeForce GTX295 8 gigs Corsair Vengence 1600mhz 
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2 300g Seagate Barricuda's-Raid 0 Samsung Light Scribe DVD-RW Rasa 720 RX360, Swiftech QP320, Swiftech GPU bl... Windows 7 Ultimate 64 bit 
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Battlestation
(18 items)
 
Death
(15 items)
 
 
CPUMotherboardGraphicsRAM
2500k 5.2 ghz 1.38v MSI Z77A-GD65 Gaming MSI Gaming GTX 970  16 GB Corsair Vengeance 
Hard DriveHard DriveOptical DriveCooling
Corsair SSD Sandisk SSD ASUS XSPC 320 
OSMonitorMonitorMonitor
Windows 10 64 bit 24" Asus 24" Asus 24" Asus 
MonitorKeyboardPowerCase
42" Samsung  Steel Series Merc Stealth Pro Corsair AX860 Corsair 800D 
MouseAudio
Logitech G502 JBL Studio monitors 
CPUMotherboardGraphicsRAM
2600k (4.5ghz/1.33v) Asus P67 Sabertooth GeForce GTX295 8 gigs Corsair Vengence 1600mhz 
Hard DriveOptical DriveCoolingOS
2 300g Seagate Barricuda's-Raid 0 Samsung Light Scribe DVD-RW Rasa 720 RX360, Swiftech QP320, Swiftech GPU bl... Windows 7 Ultimate 64 bit 
MonitorKeyboardPowerCase
23" Acer H233H, 19" Acer AL1916W Steelseries Merc Stealth 750w Silverstone Strider Corsair 800D 
MouseAudio
Logitech G9 Crappy old Dell 2.1 
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