Windows 10 Xeon E5420 Overclock Crash

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papproland0807

papproland0807

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Apr 8, 2018
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CPU: Xeon E5420 2.5GHz
MOBO: Gigabyte GA-P35-DS3R Rev 1.0
RAM: Kingston 2x2GB DDR2 667Mhz CL5
VGA: ASUS HD 5770 1GB GDDR5 128 bit
HDD: WD Blue 500GB SATA ll + Samsung 250GB SATA ll
PSU: Codegen 400W
OS: Windows 10 Pro v1709

I can overclock the CPU to 3.30GHz with 1.3000V Core Voltage. It's working fine not crashing or anything like that. When I try to set the Clock Speed to 3.40GHz or 3.50GHz, Windows is not booting. Stucked on the Logo. I tried to set the Core Voltage to 1.31250V but not working. :( Maybe later I'll try with Windows 7.
 
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RememberThe5th

RememberThe5th

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Jul 30, 2014
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Im not sure but you have to change ram speed from 667 to lower if possible, you're going over the limits of ram.
Either get faster ram to 800 with heatsinks (they can OC pretty heavily to 1066).

Try timings 6-6-6-18 1T (1T if possible) and 2.1V (thats limit for ram sticks without heatsink from my perspective).

NOTES: There is hidden key combo for showing hidden settings, after you boot in bios press CTRL+F1 that should open some settings like timings, chipset voltage and etc.
PCIE Don't set it to auto, set it to 100MHz or 101-105 i wouldn't go over 105. Maximum (by other forum posts without corruption) is 110MHz.
When i OC my Q6600 i've putted (65nm not 45nm) 1.35V, it shouldn't hurt chip for short period of time.
Make sure that you re pasted chipset thermal paste, and make sure that it doesnt spill over, or don't put too much (not cpu, but other heatsinks).

Can you post CPU-Z screenshot when you did 3.3GHz overclock? (first tab)
 
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BFG-9000

BFG-9000

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Sep 17, 2016
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Unlike Duals which easily went over 500FSB, Quads put two devices on the same FSB so were lucky to go over 450FSB without a lot of voltage and tinkering.

More devices on the same high-speed bus (the Northbridge was a 3rd) means more termination issues and reflections. It's kind of a shame because the Quads could certainly use a high FSB more than a Dual--after all both dies have to communicate with the memory controller over it.

Compounding the issue was Intel forcing the memory to run at least at FSB speed on desktop (both mobile and older Pentium 4 chipsets allowed running the memory slower than 1:1) so your poor DDR2-667 must run at DDR2-900 if you select a 450FSB. I should point out here that due to architectural limitations of Core 2, even a Quad at 4.05GHz only has a worst-case memory bandwidth requirement of 5.19GB/s, which could be adequately fed by just a single channel of DDR2-667 (5.33GB/s). That was when they started pushing their silly IGP, which could explain it.

So the limitation could be either your chip or your RAM. If you insist on such high FSB, 1.45v is the max safe vCore voltage for 45nm, but VTT must never be over 1.4v (I don't think the DS3R can even be set above 1.3v for VTT on 45nm). The P35 chipset itself is 90nm and can safely take up to 1.6v MCH (which is normally needed for >470FSB with a Dual).
 
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RememberThe5th

RememberThe5th

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Jul 30, 2014
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papproland0807

papproland0807

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Apr 8, 2018
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Now finally Overclocked this CPU to 3.40GHz. In the BIOS PCI Express Frequency is at 100MHz, DDR2 OverVoltage 0.2V, PCI-E OverVoltage +0.2V, FPS OverVoltage +0.2V and the CPU is at 1.33750V. In AIDA64 or CPU-Z sometimes shows 1.312V and 1.296V. I only tested it on Windows XP 32 bit.

Screenshot: https://imgur.com/a/Ne1399M
 
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