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i7 3820 - 4820 Overclock Club - Page 218

post #2171 of 6491
Quote:
Originally Posted by t4ngent View Post

I picked up a second 3820 at Micro Center the other day for $204 (after slickdeals coupon) =)
and picked up another sabertooth board on ebay.

Unfortunately the OC on these is pathetic compared to my first set.. it won't even boot with 125 strap, even with 36 multiplier and high vcore..

it works fine at 105 BCLK x 42 multiplier.. but the second you change the strap to 125 it won't even post successfully. I spent like an hour trying different settings with 125 strap and couldn't get a single one to post.

Anyone have an idea if its more likely the CPU or the board which is causing problems?
You're using manual or offset Vcore?
post #2172 of 6491
how exactly does offset voltage work...i have never took the time to learn how to use it...i have always used the manual voltage settings
post #2173 of 6491
Manual.

It was definitely the processor. I swapped out my other 3820 on the new board and it runs fine at 125 strap.

Will be exchanging the new 3820, what a piece of junk. Also I noticed that one of the cores on it had an average temp of 8-10 C higher than the other 3 cores, I know 3820 are generally the low binning 2011 chips but its hard to believe one would pass QC with such a poor solder job.


Quote:
Originally Posted by Gorki View Post

You're using manual or offset Vcore?
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i7 3820 (Swiftech Apogee HD block) ASUS Sabertooth X79 GTX 670 4GB SLI (XSPC Razor blocks) 64GB Patriot Viper 1866 
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Crucial M4 SSD Custom Water, 2x D5, 2x RX360  Cougar Vortex 120mm PWM Fans Antec Spot Cool (VRM/RAM cooling) 
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Danger Den Torture Rack Logitech Performance MX Logitech Z5500 
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i5 2500K ASRock Extreme6 Onboard 32GB Crucial Ballistix 1600Mhz 
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Logitech M400 MAudio BX5a Studio Monitors Denon AH-D5000 Headphone TC Electronic Desktop Konnect 2x2 Interface 
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post #2174 of 6491
Quote:
Originally Posted by zerokool_3211 View Post

how exactly does offset voltage work...i have never took the time to learn how to use it...i have always used the manual voltage settings
I've used it back in x58 days but it's completely different now. I asked almost the same question in ROG section, so take a peak there it's good read though. I' was thinking for @5G but that confirmed my worst fear since it's not possible to use offset with 125 strap only strap 100 will work and 3820 lacks of multis so...
post #2175 of 6491
Quote:
Originally Posted by Gorki View Post

I've used it back in x58 days but it's completely different now. I asked almost the same question in ROG section, so take a peak there it's good read though. I' was thinking for @5G but that confirmed my worst fear since it's not possible to use offset with 125 strap only strap 100 will work and 3820 lacks of multis so...

looks like it only works with 100 strap...so that is out for me....rofl
post #2176 of 6491
Quote:
Originally Posted by Gorki View Post

I've used it back in x58 days but it's completely different now. I asked almost the same question in ROG section, so take a peak there it's good read though. I' was thinking for @5G but that confirmed my worst fear since it's not possible to use offset with 125 strap only strap 100 will work and 3820 lacks of multis so...
Offset voltage will definitely work with strap. You'll be able to achieve 5GHz OC with offset voltage. However, vcore will remain almost static either in idle or under load. When I tested before, when CPU is idling vcore does lowered but only by -0.00X V. So, since vcore almost static, better use manual voltage because you can't utilized what offset voltage can offer.

Other than that "issue", CPU will works as usual, e.g. CPU frequency will step down when idling (1500MHz) if SpeedStep is enabled.
Edited by kizwan - 1/15/13 at 5:05pm
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post #2178 of 6491
Yes, C1E unable to work properly because vcore is almost static all the time even when idling.

http://www.overclock.net/t/1221208/i7-3820-overclock/1100#post_17815713

EDIT: If you check the screenshot in the post, you'll see VID does lowered when CPU not under load, unless Real Temp report wrong value.
Edited by kizwan - 1/15/13 at 7:21pm
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WD WD6400AAVS 640GB 8MB SATA-II Caviar Green 2 x Plextor PX-M5S 128GB (RAID0) Liteon 12x Blu-ray Drive COMBO 2 x (EK-FC R9-290X - Acetal, EK-FC R9-290X Back... 
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Koolance Ball Valve VLV-BL1X2 XSPC D5 Dual Bay Reservoir/Pump Combo Hardware Labs Black Ice GT Stealth 360mm Hardware Labs Black Ice SR-1 120 
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post #2179 of 6491
Thread Starter 
Hows them boards and overclocks goin there gentlemen questionmark.gif
post #2180 of 6491
Thread Starter 
Quote:
Originally Posted by t4ngent View Post

Manual.

It was definitely the processor. I swapped out my other 3820 on the new board and it runs fine at 125 strap.

Will be exchanging the new 3820, what a piece of junk. Also I noticed that one of the cores on it had an average temp of 8-10 C higher than the other 3 cores, I know 3820 are generally the low binning 2011 chips but its hard to believe one would pass QC with such a poor solder job.
OMG that's THE worst 3820 ive heard of take that crap back tongue.gif
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