Xeon L5639 Overclocking on X58

[jihe]

Hmm, I have mine at 4.07Ghz and I am only getting 69GFlops in Intelburn test (max stress) v2.54. Is this normal?

 

[Burpo]

Sounds about right to me. I was getting 67 @ 4000 with L5639

 

[jihe]

Sounds about right to me. I was getting 67 @ 4000 with L5639

Just a tad disappointing, the current i7's get well over 100 with only 4 cores.

 

[MongGrel]

I'd rather get the X5650 for $75. $280 for that one? Well, I'd rather wait and buy the cheapest 6-core Haswell-E since it can clock higher and has higher IPC.

I must have read something wrong there or posted the wrong one, yeah have a X5650 in here.

I thought it was cheaper than that at the time, but I imagine it went up.

 

[jihe]

Oh well, looks like I got a poor clocker. 20 pass Intel Burn at 185x22 = 4.07G, 1.264v (1.30 bios), 1.22v QPI. Any further requires a lot more volts and my poor 212 Evo cannot handle the heat.

 

[Burpo]

You need to tweak chipset voltage a bit more. I don't know what board you have, but here's Asus settings I run on a 24X7 overclock of 4290, stable at load for hrs. (temps in 80's).





(Hint) Add a 2nd 120mm fan to your 212 EVO

 

[jihe]

Thanks. I'll tweak some more. I'm on an UD5 rev 1. What is your cpu voltage at load? I'll probably replace the evo with the old TRUE rev c, just couldn't be bothered taking it out of my c2q rig.

 

[Burpo]

At the speeds I am running now, voltage is 1.46 - 1.49 during load. It does get warm, but within specs & no throttling.

 

[YBS1]

I believe you may be right Burpo, she's given me all she's got I think. I've tried various settings to stabilize it at 5GHz, it's just not happening. The voltage jump to get from 4.8 to 4.9 was significant, 4.8 is a breeze for this chip. Temps are well within acceptable levels but 5GHz would probably take 1.60v and I'm not going there.

 

[Makaveli]

Temps are well within acceptable levels but 5GHz would probably take 1.60v and I'm not going there.

Come on be a man! :biggrin:

 

[Burpo]

lolol @ Makaveli :biggrin:

 

[pay]

BTW, these are a deal & fastest of the 95watt Westmere Xeon Hex cores (ES X5675).. 130w makes too much heat, but you can hit 5Ghz with these at 200 BCLK X 25
http://www.ebay.com/itm/QTY-1x-INTE...-A0-/141349192841?pt=CPUs&hash=item20e9118489

Am I missing something? This seems like a good deal how come it hasn't sold out? Is it because it's an ES or because people would rather get the 5650 for half the price and hit 4ghz?

 

[YBS1]

Probably two factors involved. 1) It's located in China, which a lot of potential buyers will shy away from to begin with, not to mention shipping time will be extended. 2) It's an ES chip, there is really no guarantee that this chip works 100% as intended like a retail chip. There may or may not be errata that was fixed before retail steppings were brought to market. Of course it could match the retail units exactly and may be a phenomenal clocker, or not.

 

[TerryMathews]

Probably two factors involved. 1) It's located in China, which a lot of potential buyers will shy away from to begin with, not to mention shipping time will be extended. 2) It's an ES chip, there is really no guarantee that this chip works 100% as intended like a retail chip. There may or may not be errata that was fixed before retail steppings were brought to market. Of course it could match the retail units exactly and may be a phenomenal clocker, or not.

Three: technically, they're stolen property. I don't get high and mighty about it like some people do but that's a pretty decent chunk of change for a chip that might not work right, customs might turn away, or Intel might demand back.

 

[YBS1]

Come on be a man! :biggrin:

Curiosity got the better of me....1.60v and still the chip proclaimed "You shall not pass!" It's just got a wall somewhere above 4.9 that I suppose would require sub ambient cooling and a ton of voltage to breach.

 

[Burpo]

Get the ES X5675.. Problem solved!

Those Engineering Samples came out of HP servers that worked for yrs. before being replaced.
IMO they are the cream of the crop w/A0 stepping & 95 watts.. Plus 26X Turbo

 

[Makaveli]

Curiosity got the better of me....1.60v and still the chip proclaimed "You shall not pass!" It's just got a wall somewhere above 4.9 that I suppose would require sub ambient cooling and a ton of voltage to breach.

ya 1.60v is crazy voltage on a 32nm chip not worth going up in smoke!

 

[YBS1]

Get the ES X5675.. Problem solved!

Those Engineering Samples came out of HP servers that worked for yrs. before being replaced.
IMO they are the cream of the crop w/A0 stepping & 95 watts.. Plus 26X Turbo

I don't think those 5675's are going to be the magic bullet you think they'll be. I've (and you as well for that matter) got a pretty good piece of silicon. The only reason I stretched it as hard as I did was the sheer ease at which 4.8 came, figured 5.0 was within reach if I pressed it. I don't think I'll get much argument in saying Sandy Bridge is the best clocking Intel architecture, and look how few SB-E's can pull off 5GHz. Getting 5GHz out of one of these is going to require extreme cooling or falling over yourself backwards lucky CPU luck of the draw.

 

[Makaveli]

I don't think those 5675's are going to be the magic bullet you think they'll be. I've (and you as well for that matter) got a pretty good piece of silicon. The only reason I stretched it as hard as I did was the sheer ease at which 4.8 came, figured 5.0 was within reach if I pressed it. I don't think I'll get much argument in saying Sandy Bridge is the best clocking Intel architecture, and look how few SB-E's can pull off 5GHz. Getting 5GHz out of one of these is going to require extreme cooling or falling over yourself backwards lucky CPU luck of the draw.

Agreed 5ghz on Westmere is extremely rare.

And if you make it you may be able to run some benchmarks but forget about a 24/7 overclock.

Seem like alot of effort.

 

[Burpo]

Evidently I have more faith in Intel's binning. These procs cost a LOT of money & were the first of their kind. Tho not designed to run @ 200, so far ALL Westmere EP chips I've tried can do 200 BCLK. At 95 watts heat is less of an issue, and this is the fastest of the 95 watt Xeon's. The difference of the ES is A0 stepping & is reported to clock better.

http://www.intel.com/content/dam/ww...on-updates/xeon-5600-specification-update.pdf

Xeon X5675
SLBYL (B1)
3.07 GHz 6 × 256 KB 12 MB 0.75–1.35 V
95 W
LGA 1366 February 14, 2011
AT80614006696AA
BX80614X5675
$1440

 

[YBS1]

You do realize that at the speeds/volts we are running these things at they are not even close to 95w TDP processors anymore right? As for the binning, chances are all 5670's, and many/most 5660 and 5650's could have passed the binning process as 5675's. They need inventory to sell in the lower slots, so even the best silicon could find it's way into the lowest product slot. I have no doubt they can run at 200+BCLK (the trick will be 200bclk and 25 or 26X multiplier at the same time though), I just doubt many can run 5+GHz without sub ambient cooling. You may get lucky though.

 

[leobsb]

I replaced my L5639 for a X5650.
overclocking both processors were a different experience.
The L5639 needed much less voltage to achieve a BCLK of 200 while the X5650 needed 1.41V and some more juice in the QPI and ICH voltages.

Now It is on 4.4GHz with a BCLK of 200. It is stable and after one hour of linpack burn test the hotest core reaches 76ºC. It is watercooled by a EK supreme block.

It stills needs some tweaks but I'm happy with my results. For the price it will keep you from upgrading to a much more costly plataform and save me money, it worth the upgrade.

 

[Burpo]

Nice.. Makes waiting for Broadwell a bit easier doesn't it?

 

[leobsb]

Nice.. Makes waiting for Broadwell a bit easier, doesn't it?

Sure, I'll not spend big cash on a six core plataform. I'll wait for a real upgrade.

Right now do you think it worth it to get the X5675 ES for $135? I live in Brazil so China shipping is not really that bad.
I could try to sell the X5650 for the same price locally. The waiting time is usually 2 months to deliver, that is the drawback for importing.

 

[Burpo]

the trick will be 200bclk and 25 or 26X multiplier at the same time, I just doubt many can run 5+GHz without sub ambient cooling. You may get lucky though.

Of course I know power draw is exceeded, but these chips Intel binned for 26X & 95 watts (not 130 watt). These are the ones that I believe CAN run 5ghz on air..

Right now do you think it worth it to get the X5675 ES for $135? I live in Brazil so China shipping is not really that bad.
I could try to sell the X5650 for the same price locally. The waiting time is usually 2 months to deliver, that is the drawback for importing.

I want one of these so bad.. Yes it's a steal @ $135.. I just have too much going on right now. Hopefully there'll be 1 left when I'm ready..