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Xeon Hacking and Overclocking X79/X99 [Beyond X58]

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#1,681 ·
PWn3R said:
Good to know. Do you think it's worth trying closer to 1.4v if I have good temps to see if I can get closer to 5Ghz? Also all of the other voltages I bumped up a bit, but they are all at 1.1ish. after reading the ivy bridge guide I found here last night, I'm wondering if I should try raising some of those more, and wondering if that was why I could get it to start booting at so much higher clock than what I'm at now. Maybe those were too low for the other settings. I'm talking VTT and stuff is at 1.1
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Yeah, if you can keep temps under control I don't really see an issue with 1.4v. You should be ok up to 1.2v on VTT and VCCSA but those don't usually need much voltage unless you're trying to push high memory speeds.
 
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#1,682 ·
tbob22 said:
Yeah, if you can keep temps under control I don't really see an issue with 1.4v. You should be ok up to 1.2v on VTT and VCCSA but those don't usually need much voltage unless you're trying to push high memory speeds.
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I haven't seen any core hit 60c yet, even under load, granted, I'm not thrashing this thing, I want the single core performance for gaming and the higher core count for VMware workstation. I'm out of town for the next two weekends and usually don't get enough time in a block in the evening to try to mess with it then, but I'm going to tweak some stuff and see if I can get higher than this stable. Should I be upping memory voltage as well? I have 1866mhz ddr3 but i put it at 1400mhz before the over clock. I did increase to 1.55 from 1.5v on the ram.
 
#1,683 · (Edited)
Has anyone ever seen a problem where the systme goes to a black screen, but things don't hang immediately? I'm assuming this is some kind of isntability with the OC, but not sure. I've never seen an OC problem not cause a full system hang. It's happened twice now, once while I was remoted into the system. (It kept pinging for several more minutes and showed online, but I couldn't connect in my remoting tool) and once while I was gaming. I could still hear the twitch stream I was watching on the second screen for about 20 seconds after the screen went black. I ended up rebooting in both cases as the system seemed unrecoverable.

Edit: So, I think this was a problem with memory CAS timings and voltage. Bumped memory to 1.6v and dropped the CAS to what it says on the memory (no idea why my board wanted to run it at 7-8-7-22 when it's 10-11-10-28 RAM, but that could've pissed it off, especially with an OC. Also appear to be stable at 4.7Ghz now as well.

https://valid.x86.fr/uuedcm

Edit 2: Just had a revisit of the blackscreen problem after almost 24 hours without seeing it. I'm stumped on this problem.
 
#1,684 ·
Jack Mac said:
1.4V should be fine. I ran my 3960X at 1.4V for 4.7GHz for years no issue.
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They are talking about a 1650 V2, which is a 22nm hexacore (more or less comparable to a 4930K); the 3960X is a 32nm CPU.
 
#1,685 ·
Forgot that it was a V2, yes in that case I'd prefer to keep it around 1.35V.
 
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#1,686 ·
Well, I started getting intermittent shutdowns, and thankfully I figured out what it was. The current capability percentage was too low. I tried 130%-180% on my R4BE, but the 1680 V2 still needed more current. So, I anxiously set it to disabled, and that fixed it. Now, this thing is pulling over 260W in LinX...jeez. With the current capability on 130-180%, it would just shut down. These chips really are power hogs, but I guess it makes sense when you consider that the listed current capability percentages were designed for 6 core i7s.

The intermittent shutdowns were why I couldn't get 4.6GHz stable as well. Now that I fixed it, I'm kind of nervous to re-attempt to stabilize 4.6GHz. I'm going to need at least 1.35v, and my Predator 280 is near the peak of its cooling capacity with this chip at 4.5.
 
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#1,687 ·
Hello all,

I've been reading through this thread as much as I could for the past hour albeit rather slowly.

I've currently got the ASUS P9X79 PRO motherboard with an i7 4820K plugged in running at 4.4GHZ at around 1.26VCORE, cooled using a hyper 212 evo and Thermal Grizzly Kryonaut paste. This is paired with 4x4GB G.Skill Ripjaws Z 2400MHZ running at 1866.

I've purchased a E5-1650 V2 off eBay for £100 (I live in the UK) and I've scoured the internet for concrete evidence or source that confirm whether or not the 1650 V2 has a soldered IHS or a thermal paste alternative like its i7 counterpart has. Most reading seems to indicate it's soldered but nothing concrete.

I made the purchase as it was cheap and I saw an extra 2 cores as longevity (especially since DDR4 + new mobo costs are through the roof for a more recent platform).

Does the E5-1650 V2 have a soldered IHS or is it TIM based?

Many thanks!
 
#1,691 ·
It was rather frustrating for me reading comments from all over the internet about how the 1650 and 4930K were the same except the ECC support, which baffled me because I know for a fact that Xeon chips are better quality binned and as such should in theory last longer and if unlocked multiplier, have a better overclock ability and lower temps than the 4930K.


I'm looking forward to popping it in my system and at least getting same clocks as my i7 (4.4GHZ) and see what it will allow the ram to go.


Intel official spec says 1866mhz. but I've seen people run 2400 like it's nothing. Should I be concerned about running my ram at its rated 2400? Will the 1650 V2 IMC degrade and end up killing itself?
 
#1,692 ·
2400MHz should be a piece of cake. I run my ram @2666Mhz with my 1680 V2. Keep VCCSA and VTT under 1.2v, should need around 1.1v for each, maybe lower.

Multi is unlocked on the 1650 v2 too.
 
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#1,693 ·
I've followed this thread more or less since it first showed up and it got my interest up. First the unlocked Xeons and some what the comparison between the general public and workstation/server parts, (do prefer X58 Xeons). Started collecting CPUs a year or so ago and finally got around to to putting a little power to them recently.

Boards a Sabertooth X79, did try two different kits of DDR3 2400 (G. Skill & Kingston) which were not much different from each other. Cooling, water chiller set between 4-8c in relation to dew point. One example of each CPU so you can see how the lottery favored me. Was unable to get the 125 strap to work with the 2651 V2 nor anything below the the 3820. Used wPrime as it was the bench I sub'd all I had on hand and follows closely to what I was seeing in single thread, the Ivy based CPUs do show more dominance in the heavy multi thread benchs.
 

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#1,694 ·
Bad X58 week lost a couple boards so put the Sabertooth X79 back on the bench and added a 2650L V2 & 2680 V2 both 10 cores. Changed bench to HWBOT x265 4K for comparison, 2680 did come in second in wPrime 1024 also. Setting 1 core 2 threads in BIOS got a 4.1 using a 114 range Bclk for the 2680.
 

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#1,696 ·
Hey guys,

i need some help. I have a couple of questions.

1: Is X79 worth buying at around 300 dollars in 2018? Im talking about a motherboard some ram like 16gigs and a cpu all together for that price.

2: Is the Asus rampage iv good?

3: Is the EVGA Dark board good?

4: If i get a set like that, which is the go-to upgrade cpu later on for that socket?

Thank you
 
#1,697 ·
Wanderer1 said:
Hey guys,

i need some help. I have a couple of questions.

1: Is X79 worth buying at around 300 dollars in 2018? Im talking about a motherboard some ram like 16gigs and a cpu all together for that price.

2: Is the Asus rampage iv good?

3: Is the EVGA Dark board good?

4: If i get a set like that, which is the go-to upgrade cpu later on for that socket?

Thank you
Click to expand...
X79 is still good for 2018, but it depends a little on what you use the machine for and what you're expecting out of it. $300 is definitely a good deal if it includes the board, RAM and CPU. I use the Rampage IV and I think it's a great board. Dont have experience with the EVGA but havent heard anything negative about it. The best CPU depends on what you plan to use the system for.
 
#1,698 ·
FlawleZ said:
X79 is still good for 2018, but it depends a little on what you use the machine for and what you're expecting out of it. $300 is definitely a good deal if it includes the board, RAM and CPU. I use the Rampage IV and I think it's a great board. Dont have experience with the EVGA but havent heard anything negative about it. The best CPU depends on what you plan to use the system for.
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Thanks for the response, mostly gaming streaming game recording and video editing. Which is the best vfm xeon overclockable cpu for this socket?
 
#1,699 ·
Just curious, can you use XTU for Xeon chips?

I dont remember seeing this ask here. And I cant seem to find the "search this thread" button
 
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#1,700 ·
Seeing 12 core ivy-Xeons dropping in price but not low enough to warrant a buy vs a current gen 10C+ CPU price performance wise. Right now the E5-2680V2 at $160 and E5-2690V2 going less than $300 a month ago are looking really good.

I got myself 2 extra Z9PE-D8-WS sitting in the closet for several months now and one in my main rig may get me to snag an extra pairs of 2680V2s again in the near future.
 
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