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post #7341 of 7965
Quote:
Originally Posted by gofasterstripes View Post

That difference is so small it could be changes in the conductivity of the surface of the solder you're probing!

Nae worry lad smile.gif

Ok, ok. Just a little worried with this new PSU. It's the paranoia of buying new products, lol

Thanks smile.gif
     
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post #7342 of 7965
Quote:
Originally Posted by OCmember View Post

Sounds like a PSU problem to me, but I could be wrong. What are you using for a PSU and Motherboard?

Plus 3.6GHz QPI is getting a little out of stability range for normal volts. I'd push a little more volts into the QPI & IOH core. Try running them at the same volts e.g. 1.30v for both.

Your uncore looks like it isn't being pushed too hard at 3.2GHz but for the heck of it try 1.25v


EDIT: Wait a minute. You are running 32GB with HT on? try running 8GB with HT off. Sounds like it's too much memory controller pressure for the chip and the board.


Now I tried it with only 1 module 8 GB and the 4,4 GHZ (191x23) seems to need less CPU voltage to be stable but not much. I didn’t test is intensively because after all it doesn’t make sense, I think at 1,46-1,47 volts or something like that it could pass 15 minutes of prime95 but I’m not 100% sure. It definitely crashed at 1,43 volts with 3B Bluescreen and 1,45 volts with freeze. The QPI/DRAM Voltage was 1,25 v the IOH at 1,3 volts. The Temperatures and power draw were a lot lower here with the less ram.

As sad why I should test something when it doesn’t make any sense, I want to use my full RAM and also want to upgrade to 48 GB soon. Also only Single-Chanel is bad. So it must be stable under full configuration. Turning HyperThreading off is not a good idea, because it cost a lot performance, but yes I know you need less voltage if it’s off.

I don’t know if it’s important but with the CPU I had before (i7 920 C0) it was not possible to reach more then 3,7 GHZ at 1,38 Volts. Everything above this was not only too hot, no it always crashed with Bluescreen regardless of voltages and I tried it so many times with no sucess. The same bad overcklocking results with the both X5660 the secound one I use now is a B-Batch modell and should need lower voltages then the A-Batch first one but it isn't so.

Somehow my system have a tendency to crash whatever you change in the BIOS and it is really sucks with time frown.gif
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post #7343 of 7965
Try setting the voltages as said above, with all or half the RAM in.
post #7344 of 7965
Quote:
Originally Posted by 14600 View Post

Now I tried it with only 1 module 8 GB and the 4,4 GHZ (191x23) seems to need less CPU voltage to be stable but not much. I didn’t test is intensively because after all it doesn’t make sense, I think at 1,46-1,47 volts or something like that it could pass 15 minutes of prime95 but I’m not 100% sure. It definitely crashed at 1,43 volts with 3B Bluescreen and 1,45 volts with freeze. The QPI/DRAM Voltage was 1,25 v the IOH at 1,3 volts. The Temperatures and power draw were a lot lower here with the less ram.

As sad why I should test something when it doesn’t make any sense, I want to use my full RAM and also want to upgrade to 48 GB soon. Also only Single-Chanel is bad. So it must be stable under full configuration. Turning HyperThreading off is not a good idea, because it cost a lot performance, but yes I know you need less voltage if it’s off.

I don’t know if it’s important but with the CPU I had before (i7 920 C0) it was not possible to reach more then 3,7 GHZ at 1,38 Volts. Everything above this was not only too hot, no it always crashed with Bluescreen regardless of voltages and I tried it so many times with no sucess. The same bad overcklocking results with the both X5660 the secound one I use now is a B-Batch modell and should need lower voltages then the A-Batch first one but it isn't so.

Somehow my system have a tendency to crash whatever you change in the BIOS and it is really sucks with time frown.gif

So what he was trying to do is process of elimination to figure out what you could change to help. Not get the best performance. Find the issue causing the need for so much voltage, and then work out the tweaks for best performance. X58 takes some real trial and error to get it right. It's actually one of the reasons why it was loved so much (and still is), the hunt for the best config intrigues only the best of overclockers!!

pull most of the memory, and things get better, your memory controller is being stressed too much. Turn off HT, and things get better, the cores/motherboard voltage regulator working too hard. But, the biggest factor is, what are all the components in your system??

Fill out the rig builder as complete as possible. so many variables can attribute stability problems. low quality PSU, will require more Vcore. High voltage, average ram can make the memory controller work harder, especially at 32 gigs. A mediocre motherboard will definitely be a huge factor in all of this. What are the complete batch numbers for the chips you have been testing?? I have seen some wildly different results due to batch numbers too.
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post #7345 of 7965
With 32GB of ram it's gotta be the VTT and Dimm volts. I would push 1.325v cpu VTT, and 1.666v dimm.

EDIT: the bad part is if you don't have voltage terminals (or know where to place the meter probes) you could be getting bad software readings. e.g. HWmonitor says I am pushing 1.4v VTT when in reality I've set the bios to 1.30, and on the terminal it's reading 1.305v
Edited by OCmember - 8/5/16 at 12:08pm
     
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post #7346 of 7965
Maybe I should accept somehow it not possible to overclock it more/better then 4,2 GHZ with 1,4 Volts. I mean is it really worth to spent again hours maybe for nothing. I already spent so much time on it and unfortunately nothing changed the high cpu voltage is nedded to avoid crash, it didn’t help to change other voltages like VTT/QPI, IOH and RAM. Remove RAM to stabilize doesn't make sense for me because I need it.

Always if I reduce vcore Bluescreens 3B, 1E, 101, 124 appears and overall as said the tendency to crash is somehow very high with this setup.

Now I’ve 66,7 % more multi thread Performance and 12,5 % single thread as with the i7 920 3,7 GHZ 1,38 v (more/better was not possible). It is a good result I’m happy with it. With 4,4 GHZ it would be only 5 % more.
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post #7347 of 7965
Quote:
Originally Posted by 14600 View Post

Maybe I should accept somehow it not possible to overclock it more/better then 4,2 GHZ with 1,4 Volts. I mean is it really worth to spent again hours maybe for nothing. I already spent so much time on it and unfortunately nothing changed the high cpu voltage is nedded to avoid crash, it didn’t help to change other voltages like VTT/QPI, IOH and RAM. Remove RAM to stabilize doesn't make sense for me because I need it.

Always if I reduce vcore Bluescreens 3B, 1E, 101, 124 appears and overall as said the tendency to crash is somehow very high with this setup.

Now I’ve 66,7 % more multi thread Performance and 12,5 % single thread as with the i7 920 3,7 GHZ 1,38 v (more/better was not possible). It is a good result I’m happy with it. With 4,4 GHZ it would be only 5 % more.

you probably bought those (xeons) from a private user?
     
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post #7348 of 7965
Quote:
Originally Posted by OCmember View Post

you probably bought those (xeons) from a private user?

No, they're used from commercial seller.
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post #7349 of 7965
Quote:
Originally Posted by 14600 View Post

No, they're used from commercial seller.

I had a X5660 that wouldn't do 4.4GHz under 1.4v er something.. really disappointed with the chip..
     
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post #7350 of 7965
Quote:
Originally Posted by OCmember View Post

I had a X5660 that wouldn't do 4.4GHz under 1.4v er something.. really disappointed with the chip..

Me too but not sure if they're so bad or if it's rather MB or PSU Problem. I think it is both. Unfortunately I don't have money to buy 10 chips and test it to see. How much voltage do you need with the W3690 for 4,47 GHZ? Do you have a B Batch? There’re also C and D Batches, not sure if they are good for overclocking.
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