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PSA: unlocked 8core for x79.. if you cared.

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post #1 of 259 (permalink) Old 07-11-2015, 10:52 AM - Thread Starter
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Got your attention? Good, now I can finally rack up those imaginary "internet points" by showing off my geek bling.

So short story: the Xeon E5-1680V2 for the x79 is a 8 core cpu that is unlocked and sports a large jump in cache.

Long story:
So as with any enthusiast hardware there is a time and place where users can build, overclock, and gloat over having a rig with the best hardware and unrivaled performance. This time is short as the next year the newest and greatest is released.
Comparing X79 to X99:
1. ddr4
2. nvme support
3. 8 core cpu support

In the case of ddr4 I already have 64gb of 2133, thus the jump at this time to ddr4 doesn't really excite me. Nvme is interesting and may be enough to jump ship to x99 if performance for say load times simply went from fast to instant. Luckily it seems some people have had luck with the intel 750 pci as was my case. Great, so 1 and 2 irrelevant. 8 cores however is also exciting. However at the time I felt I was out of luck and 6 cores was just going to have to be enough (in all actuality its completely overkill... but its a free country). Still with google a short click away I decided to see if that magical "4970x" ever came to be. Toil as a did however for a while 2 hours at work I just couldn't find any hope until a few stories appeared.
Great! I just found 3 instances.... oh wait its just the same user on different forums arguing the same thing. A user named lutjens had obtained a E5-1680V2 and posed his results of a 4.5oc. It sounded too good to be true, especially that CPU-Z had some inconsistencies. Never the less the idea stuck. Did I ramble on enough yet? Well good, I'll keep going.
So a few days later at work I find said xeon in an ebay listing. Expensive... but still less than a 5960x. "Well if the intel 750 worked... maybe this will too!". With that I bought the cpu and cried as I submitted the payment. Just waiting for the cpu caused enough anxiety, did I just waste a big wad of cash? Well even if it did work the answer could be yes if you think about it.
Well as you guessed yes, it did work. With days of tinkering I present my 8 core xeon on x79 running at 4.4ghz. I just say my office has been quite toasting the last few days benching but at 1.352vcore at max load I couldn't be happier. Well the goal was to match my 4.5 4930k... but nevertheless I'll take it.


So if you really wanted an 8 core overclocked cpu on x79, try the E5-1680V2. From what I gather the cpu was for Apple's mac pros for late 2013. Most Xeons are locked since x58 however apparently doesn't apply to one socket configurations... yet.

Special thanks to lutjens for being heckled in forums but pointing me in the right direction.



Proof of stable oc:

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post #2 of 259 (permalink) Old 07-11-2015, 11:06 AM
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I thought it was fairly well know that Xeon 16xx series chips were unlocked.

If that is stable at 44x on only 1.33v though that is pretty awesome. Wonder what you can do with 1.4v or 1.45v lol.


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post #3 of 259 (permalink) Old 07-11-2015, 11:17 AM - Thread Starter
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I seen some instances of the lower Xeon 16xx series being used, but could not find specifically the 8 core variant other than lutjens'.

I tried, tried hard. However even at just over 1.4 I could not get any combination to stay stable over 4.4. 125 blck.. nope. 45+ multi, nope. 44x with a slight blck oc... nope. 4.4 however zeroed right in no problem. speed step and offset voltage works too!

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post #4 of 259 (permalink) Old 07-11-2015, 11:33 AM
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Damn frown.gif

Still, that's not bad for 8 cores. Now when people ask what CPU you have, instead of giving the typical response of oh yeah I have a i5-xxx or a i7-xx .. you can be like yeah.. I have a Xeon E5-1680 v2 and they will be like what... tongue.gif


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post #5 of 259 (permalink) Old 07-11-2015, 11:38 AM
 
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That SKU is not even on intel ark. intel probably didn't bother listing it.
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post #6 of 259 (permalink) Old 07-11-2015, 11:40 AM
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it is not very convenient as cpu

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post #7 of 259 (permalink) Old 07-11-2015, 11:47 AM
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post #8 of 259 (permalink) Old 07-11-2015, 12:18 PM
 
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Quote:
Originally Posted by iinversion View Post

Quote:
Originally Posted by TheLAWNOOB View Post

That SKU is not even on intel ark. intel probably didn't bother listing it.

http://ark.intel.com/products/77912/Intel-Xeon-Processor-E5-1680-v2-25M-Cache-3_00-GHz

What?

You can find it via google, but you can't find it by navigating thru intel ark.
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post #9 of 259 (permalink) Old 07-11-2015, 12:22 PM
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Quote:
Originally Posted by TheLAWNOOB View Post

You can find it via google, but you can't find it by navigating thru intel ark.

Yes you can.



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post #10 of 259 (permalink) Old 07-13-2015, 05:22 AM
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Quote:
Originally Posted by Servos View Post


Special thanks to lutjens for being heckled in forums but pointing me in the right direction.

You're welcome...wink.gif It's somewhat odd that it took you so much voltage to run at 4.4GHz. What cooling are you using? I'm still using my Corsair H110, and backed down my clock to 4.4GHz as well. I was stable at 4.5GHz, but didn't like using over 1.3V to get there. The 100MHz just wasn't worth it, as I run at 4.4GHz with only 1.25V (much less) and all other voltages at stock. At 4.5GHz, with the significantly higher voltage, the chip ran much warmer, again helping me make the decision that 4.4GHz was best..smile.gif

The thing I like most about the CPU is that it runs quite cool...I max out at 60°C under extreme load. The fact that it was a simple drop in upgrade that allowed me to extend the life of my system was nice too...wink.gif

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