Xeon L5639 Overclocking on X58

[Burpo]

Need more juice above 180bclk. +0.20 - 0.22 should do it. Temps shouldn't be too bad.. I leave everything on (C states etc)

 

[ClockHound]

Can't disable Speedstep (turbo) in my Sabertooth. Even when the bios says it's disabled, the clock spikes up 200mhz in Windows. Have the latest bios too.

I dislike turbo when working with audio in a DAW. Those quick spikes play havoc with the DPC latency. And the extra 200mhz wants more voltage than running all cores at X23 on my 5660.

Burpo, can you disable turbo on yours? For like real? ;-)

 

[PG]

Can't disable Speedstep (turbo) in my Sabertooth. Even when the bios says it's disabled, the clock spikes up 200mhz in Windows. Have the latest bios too.

I dislike turbo when working with audio in a DAW. Those quick spikes play havoc with the DPC latency. And the extra 200mhz wants more voltage than running all cores at X23 on my 5660.

Burpo, can you disable turbo on yours? For like real? ;-)

I'm not Burpo, but I think I know the answer to this one. I once had a Sabertooth but sold it. Wish I had never done that....
Anyway, SpeedStep and Turbo are different things. Speedstep allows the cpu to drop speed under low loading. Turbo allows higher speeds when just a few cores are loaded. What you are looking for should be called "Intel(R) TurboMode Tech" in the bios, and it's just below the SpeedStep setting in the bios on the AI Tweaker tab.
See page 70 of this pdf: http://dlcdnet.asus.com/pub/ASUS/mb/LGA1366/Sabertooth_X58/e5995_sabertooth_X58.pdf

 

[Burpo]

Disable C states along with Speedstep..

Chilly here this morn.. Liking the temps

 

[ClockHound]

Wow! Those are great temps...and low volts for 4600 turbo. You must be good at typing with mittens on. Or will be.

 

[Burpo]

60 in Florida is cool, so yeah, temps are good today. Obviously that's @ idle, but volts are adaptive, so you can add .25 to that when it's fully loaded. It's on 24X7, and when I need it to encode/render, it just works.. Never a blue screen or an issue, but I try to keep it in low 80's when loaded. Anytime I need to do transcoding for more than an hr. I back it off to 195 to manage temps & prevent throttling. 6 cores & 12 threads working at 4300 still gets the job done pretty quick..

 

[ClockHound]

60? That's hot! That's spring or fall where I am, not winter. And must admit that I dial up the clock on the cold nights to get some extra ambient heating.

Thanks for the turn off Speedstep/C-state tip. Reduces DPC latency by almost 3 times. Got peaks under 90us. Good to go for DAW work at 4140. Nice that the Sabertooth stores multiple settings. Can crank it back up for video/render stuff.

These Xeons are the bargain of the century. For us used CPU connoisseurs.

 

[1sickm]

Picked up a dx58so, 750w psu, 12gb 1600mhz ram, and another gtx 770. Waiting on my x5670 to arrive !

I think the dx58so is going to be difficult to overclock on but I always like a challenge.

 

[Burpo]

Intel's overclock utility takes much of the guess work out of over clocking, so it shouldn't be that bad..

 

[ClockHound]

Wow! You could launch a starship with that UI. It does overclocking too?

 

[1sickm]

Intel's overclock utility takes much of the guess work out of over clocking, so it shouldn't be that bad..

Yeah I was planning on OC through the BIOS but if Intel's utility makes it that easy and will achieve a nice overclock than I may go that route.


Maybe I will test OC in the BIOS vs the utility. We will know next week!

 

[LotharX]

Cool.. I wouldn't worry with Prime. IBT told me what I need to know much quicker.. Renders @ 4400 for me everyday.. Guess if it goes poof.. I'll have to get another 1.. Long as temps are good, let it rip.. That's my motto..


Nice board Mongrel

Man that Core Voltage is insane, my goes 204BCLK with 1.360V.

I have no offset, so it is always the same voltage, as it showns in the screen.

*Edit* Can you make a picture from the voltages with those 1.48V settings from inside the BIOS?

 

[MongGrel]

I still haven't played with the X5680 that much, to be honest I think I liked the X5650 almost better and tempted to stick the X5680 in the HTPC closer to stock speeds.

 

[MongGrel]

Nah, started messing with it again, starting to tame it a bit.

 

[Burpo]

Results?

Running 4.2ghz @1.38v now.. Tamed down a bit..

 

[MongGrel]

I'm too lazy atm, have it at 4.52 pretty nicely.

Still pretty hot, might have to go to 4.49 again, that was a pretty sweet spot it looked for air here, was just messing around for a change a bit.

 

[Makaveli]

Results?

Running 4.2ghz @1.38v now.. Tamed down a bit..

4.2 at @ 1.38v is fairly high considering i'm doing it at 1.29v for inferior silicon

 

[Burpo]

Ditto on the "lazy" MonGrel
Yes I succumbed to all the warnings.. and haven't really tried to get it down further.. Running .18 offset for now, but this thing works everyday & I don't want issues.. 22X195 is good enough for now. Maybe one day I'll find an X5675
Pretty easy to hit 4.2 when you have 25x multi..

 

[ClockHound]

That's not lazy, that's uh...turbo safety margin. Yeah, that's it.

 

[Faljukin]

Nice to see this thread is still going.

I've been using my x5650 for over a year now at 4.2ghz with 1.35v and its still performing great.
I had 2 x5660 for a week but they were both poor overclockers so went back to the x5650. Oh well thats how the silicon lottery works.

 

[menaceR32]

Hi everyone! First post for me. Thanks for taking the time to post all the great info.

After reading the forums here and this thread in particular I decided to snag 5650 off eBay for $92 Canadian all in.

I put a Kraken x61 on it and after a few weeks of tweaking I am blow away with this CPU.

4.1 GHz on all cores
4.7 GHz with less

Core V: 1.35

IBT: 81.3 average (very high)

Max temps were 75-81 C across the cores after 20 minutes of IBT.

I spent a couple of weeks, a few hours a day (as much as my girl would tolerate... OK I got a really addicted) dialing it in. I was actually stuck going past 200 BCLK until I came across a few posts in this thread.

All my stress testing would pass even up to 215 BCLK but I would get random crashes and BSOD's for drivers usually when minimizing a bowser, playing a game or when a mouse farted in a field in Russia.

I was running up to 207 BCLK but started noticing that IBT would have some slow lines and I found that the multiplier was dropping down to 12 for some durations.

I have not tried 206 yet, but seems 205 is good for 24 hours now.

Thanks again everyone!

 

[menaceR32]

Tried a different method to dial in my BCLK and was able to use the x20 multiplier.

4.575 GHz on all cores, so far IBT and memory tests are all clean.

IBT: 94.5 GFlops (average)

Max temp @ 76.

I turned HT off for this try. Dropped core temps by 10 degrees and gained 10 GFlops in IBT strangely enough.

 

[Burpo]

Welcome to the forum! Nice overclock! These chips are an amazing value.
You've got to have a decent board tho.. Which do you have?

 

[menaceR32]

Thanks for the welcome! 100% agree, this CPU is a lot of fun for under $100.

Nothing fancy on my end. I have an Asus P6T with 12 GB of 1600 in it.

Update on the second high BCLK overclock. 100% stable, but I had to push PCIe frequency to 104 to get it booting and stable. I went as far as 105 but video was cutting out for a split every 5 minutes or so. Backed off to 104 and my last post was the result.

It was crushing synthetics from ~81.5 (205 BCLK HT on) to ~94.5 (229 HT off), but real world applications were telling a different story.

3dbench went from ~12300 to ~8000

Far Cry 4 FPS was also down by about 1/3rd even 1/2 when booking it in the gyro or a heavy fire fight.

This was an OC with HT off. Allowed for 10 C more to play with. The high IBT and LinX numbers are HT off. Games were bad with both HT off and so was editing. I tried HT off and no change. Suspected the PCIe freq.

I backed off PCIe freq to 103 and had it booting with BCLK 225. Tried the games out, still no good. 3d Mark over 10K but not good. Backing off to 102 did not help but did not it was a drop that could have been considered within margin of error.

I went back to PCIe 103. HO off and tried going from x20 to x22, no go.

I dropped down to 219 and was booting with 1.41 on vcore. Graphics benchmarks and games were a wash compared to the last settings.

I went back to the more stable auto multi, which gives me the x23 turbo for games and the lower 20's for hex core with all the power management on for messing around in the os.

BCLK205, PCIe 101 with HT on is 100% stable and shows x23 in CPU-Z.

Hands down wins in the graphics benchmarks. Best FPS in FC4 and Wolfenstein too.

Video editing is also wins out with this tune.

Voltage back way down to my first post levels on this too.

 

[MongGrel]

Hi everyone! First post for me. Thanks for taking the time to post all the great info.

After reading the forums here and this thread in particular I decided to snag 5650 off eBay for $92 Canadian all in.

I put a Kraken x61 on it and after a few weeks of tweaking I am blow away with this CPU.

4.1 GHz on all cores
4.7 GHz with less

Core V: 1.35

IBT: 81.3 average (very high)

Max temps were 75-81 C across the cores after 20 minutes of IBT.

I spent a couple of weeks, a few hours a day (as much as my girl would tolerate... OK I got a really addicted) dialing it in. I was actually stuck going past 200 BCLK until I came across a few posts in this thread.

All my stress testing would pass even up to 215 BCLK but I would get random crashes and BSOD's for drivers usually when minimizing a bowser, playing a game or when a mouse farted in a field in Russia.

I was running up to 207 BCLK but started noticing that IBT would have some slow lines and I found that the multiplier was dropping down to 12 for some durations.

I have not tried 206 yet, but seems 205 is good for 24 hours now.

Thanks again everyone!

:thumbsup::thumbsup: