I've hit a overclocking wall! HELP please! :(

Jay85

Jay85

Jay85

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I managed to use offset to get my 4.7ghz completely stable now and lowered my cpu pll voltage to keep temps down (1.65v). Although when i first log in cpu-z shows my voltage to be around 1.46v it drops shortly after due to intel speed step to a nicer 1.2v then when at load it will stay around 1.39v for 4.7ghz.

I have my:

LLC set to regular (0%)
Offset set to: auto (didn't need to change this)
Multiplier: x47
CPU PLL voltage: 1.65v
Internal PLL overvoltage: Enabled
SPI: Enabled
Extreme Tweaking: Enabled


For 4.8ghz i tried to by upping the multiplier and going for it but as soon as it gets to the windows logo it just restarts and fails to boot into windows... I read that upping the internal PLL overvoltage can help with booting in but i also read that ASUS has gotten rid of this feature on some of their boards or disabled it via bios update allowing you only to enable internal pll overvoltage but not to adjust it..


So is there any other way to help with booting in for 4.8ghz? Any other voltages i can tweak?
 
You're pretty much on the edge really. At 4.7GHz, it's going to be a case of diminishing returns for big voltage increases. I'm surprised you can't even boot if 4.7 is stable under load (how have you been testing it and for what duration?). 4.7GHz for 1.39V is pretty solid, but it might be worth upping your LLC since at boot your whole system is drawing power as it starts up and you might be suffering a bit of vdroop? Just a guess though. I think you might need more vcore to hit 4.8GHz though.
 
Devrij said:
You're pretty much on the edge really. At 4.7GHz, it's going to be a case of diminishing returns for big voltage increases. I'm surprised you can't even boot if 4.7 is stable under load (how have you been testing it and for what duration?). 4.7GHz for 1.39V is pretty solid, but it might be worth upping your LLC since at boot your whole system is drawing power as it starts up and you might be suffering a bit of vdroop? Just a guess though. I think you might need more vcore to hit 4.8GHz though.
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Im literally just doing it for benchmarking reasons and having 4.7ghz stable is a nice bonus for everyday use. For testing i've used prime95 (6 hours) and IBT very high at 5 runs and it passed it perfectly. Temps were touching nearly 99c but when doing normal gaming i dont see it pass 72c. I do get random pauses sometimes during boot so maybe a slightly higher llc will help with that but i really dont wanna increase my volts anymore than i need to.

I tried offset + 0.015v and still no boot with ultra high llc so im stumped.
 
Jay85 said:
Im literally just doing it for benchmarking reasons and having 4.7ghz stable is a nice bonus for everyday use. For testing i've used prime95 (6 hours) and IBT very high at 5 runs and it passed it perfectly. Temps were touching nearly 99c but when doing normal gaming i dont see it pass 72c. I do get random pauses sometimes during boot so maybe a slightly higher llc will help with that but i really dont wanna increase my volts anymore than i need to.

I tried offset + 0.015v and still no boot with ultra high llc so im stumped.
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It seems like your problems exist at the boot stage, which is a bit of a head scratcher. Usually you can get into the OS and crash when you start loading the cpu up, but not being able to boot means you're miles away from stable. I suspect the 4.7GHz OC isn't quite as stable as you think, but 6hrs of prime and IBT is a good indicator for stability. I'm stumped, but hopefully someone else will be able to help.

How high have you gone on the vcore for 4.8GHz? I think you'll need at least 1.45V-1.5V for that if you're at the limits of what your chip can do. I'd call it a day tbh, as 100Mhz isn't really worth it to start pumping big voltages through your chip.
 
Devrij said:
It seems like your problems exist at the boot stage, which is a bit of a head scratcher. Usually you can get into the OS and crash when you start loading the cpu up, but not being able to boot means you're miles away from stable. I suspect the 4.7GHz OC isn't quite as stable as you think, but 6hrs of prime and IBT is a good indicator for stability. I'm stumped, but hopefully someone else will be able to help.

How high have you gone on the vcore for 4.8GHz? I think you'll need at least 1.45V-1.5V for that if you're at the limits of what your chip can do. I'd call it a day tbh, as 100Mhz isn't really worth it to start pumping big voltages through your chip.
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It's confusing me too,i have no idea why it won't boot for 4.8ghz even though i can with 4.7ghz no problem. I can play games for hours at 4.7ghz and it wont crash or error or anything! Just runs perfectly fine.

I tried upto 1.48v for 4.8ghz but i read that you shouldn't go over 1.4v for ivybridge? Is that true? Or is there a much higher limit than that? I'm running it on water cooling so temperature isn't really an issue as i consider anything under 80c still quite cool.

Demons UK said:
Mines seems happy at 4.6 but to get to 4.8 seems impossible, even with vcore at 1.5! Although my chip is a dog.
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Have you tried for 4.7ghz yet? Would be interesting to see what volts you need for it.
 
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