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4790k locked at 1.28v after setting up ram

Tags:
  • Dominator Platinum
  • vcore
  • Haswell
  • RAM
  • CPUs
  • Z87
  • i7 4790K
  • Maximus 7 Formula
  • Xmp
  • 2400MHz
  • 1333MHz
  • 1505 Bios
  • G.SKILL
  • 1600MHz
  • i 74770k
  • Intel
  • Z97
  • 1.28v
  • Asus
  • Help
  • cpu volts
  • Republic Of Gamers
  • Maximus 6 Formula
  • Corsair
  • Ripjaws
Last response: in CPUs
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October 12, 2014 10:48:49 AM

Hello,
I have a Asus Maximus 7 Formula Z97 paired with an i7 4790k and a 4x4GB 2400MHz kit of Corsair Dominator Platinum. When I attempt to turn on xmp or manually set up the ram it cranks the cpu volts up to 1.28v making the system crash.

I've been working with the good folks at republicofgamers.com but haven't been able to find a fix. They had me try many different settings in the BIOS but nothing has worked.

I've tried using a 2x4GB 1600MHz kit of G.Skill Ripjaws with the same results, xmp and manual setup crank the cpu volts up to 1.28v

I've tried running my Dominator Platinum kit in every config possible. Same results, cpu volts locked at 1.28v

I also have a Maximus 6 Formula Z87 flashed with the 1505 Devils Canyon compatible bios. I installed the 4790k only to have the same outcome. xmp/cpu volts 1.28v manual/cpu volts 1.28v

This 4790k is the 3rd Haswell cpu I've bought in the last year. My two 4770ks have worked fine with my Dominator Platinum 2400 kit. xmp no problem, manual set up not a problem.

Anybody have an idea of what could be going on? Its a shame having to run ram at 1333MHz.. Thanks






More about : 4790k locked 28v setting ram

a b à CPUs
October 12, 2014 2:05:43 PM

Set the CPU voltage to manual and turn it to about 1.125 or something thereabouts. Also, try to set EVERYTHING to manual. A pain, but y'know.

Also, this is a new one. It's possible that the CPU gives some power to the RAM, or the CPU needs more voltage to use the RAM. Not quite sure, I'll look about.

Also, try moving the RAM to a different slot(s).
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October 12, 2014 6:12:27 PM

space55 said:
Set the CPU voltage to manual and turn it to about 1.125 or something thereabouts. Also, try to set EVERYTHING to manual. A pain, but y'know.

Also, this is a new one. It's possible that the CPU gives some power to the RAM, or the CPU needs more voltage to use the RAM. Not quite sure, I'll look about.

Also, try moving the RAM to a different slot(s).


Thanks for the reply. I tried manually setting the cpu volts but as soon as I set up the ram, save and restart the cpu volts go back to 1.28v. I don't know how this is possible but I does it.

Ive tried two very different kits of ram in every possible config on both mobos. I began setting everything to manual but became overwhelmed quickly. So many options in this bios its crazy.

Do you ave any experience dealing with Intel? Is this even something they would warranty? I bought the cpu off Amazon on 8/23. From the moment I installed it in a brand new mobo it hasn't worked correctly.

In my mind that's something that should be honored by warranty but I feel Intel may say its part of the silicon lottery. What do you think? Intel is a little intimidating when it comes to customer support. Maybe not..Thanks space55
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a b à CPUs
October 12, 2014 6:47:13 PM

I've got an i7-4770K in my build, along with (just like you), some insane BIOS. My guess is to call Intel, and state EXACTLY what the CPU is doing, call it defective, and have it replaced. If you complain enough, they'll replace it, my guess is. Also, with silicon lottery, I'm surprised this one didn't get caught. Intel does quality checking on the CPUS to get rid of bad ones (as far as I know), so I'd call them, tell them you got a bad CPU, say you've called three times, etc. Lies get you places in customer support...

I'm guessing it could also be a mobo issue, too. Did you try updating BIOS? Try this:

1. At the bottom, there is a little battery. Should be a button cell. Find it (extremely challenging, it is right in front of you. I have huge problems finding stuff in front of me.)
2. Turn off the PC, shut off the PSU, and unplug it. Take out the battery and leave it out for a good five minutes.
3. Put it back in, turn on the PSU and PC, boot into BIOS, and they'll be reset. Try this, then try updating this, then call Intel and make up stuff.

If that doesn't work, let me know. I'mma look around at this kind of issue.
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a b à CPUs
October 12, 2014 6:48:13 PM

Also, complain that their CPUs are low quality, they don't check for dead ones, etc. That'll get you somewhere!

Also, say you'll switch to AMD... *maniacal laughter*
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October 18, 2014 12:37:12 PM

space55 said:
I've got an i7-4770K in my build, along with (just like you), some insane BIOS. My guess is to call Intel, and state EXACTLY what the CPU is doing, call it defective, and have it replaced. If you complain enough, they'll replace it, my guess is. Also, with silicon lottery, I'm surprised this one didn't get caught. Intel does quality checking on the CPUS to get rid of bad ones (as far as I know), so I'd call them, tell them you got a bad CPU, say you've called three times, etc. Lies get you places in customer support...

I'm guessing it could also be a mobo issue, too. Did you try updating BIOS? Try this:

1. At the bottom, there is a little battery. Should be a button cell. Find it (extremely challenging, it is right in front of you. I have huge problems finding stuff in front of me.)
2. Turn off the PC, shut off the PSU, and unplug it. Take out the battery and leave it out for a good five minutes.
3. Put it back in, turn on the PSU and PC, boot into BIOS, and they'll be reset. Try this, then try updating this, then call Intel and make up stuff.

If that doesn't work, let me know. I'mma look around at this kind of issue.


Its not the mobo. I have a Maximus 6 Formula and a Maximus 7 and It doesn't work on either. The Maximus 6 Formula has the 1505 Devils Canyon compatible BIOS on it so If it was a mobo issue it should work on one of them. Also having tried 2 very different kits of ram and nether work has to be proof the memory controller is messed up on the 4790k.
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