Xeon L5639 Overclocking on X58

[Trinamo]

So other than clock speed out of the box, are there any other differences between the 5650 and the 5670/5675 or even a 5690 that would be of any benefit to those of us exploiting their overclocking potential? Higher peak OC speeds wouldn't necessarily be a given in comparison, am I right in that thinking? Thanks!

 

[Burpo]

X5650-X5675 are 95 watt. Anything above that is not 95 watt and seem to not have as much OC head room. The 60 watt L5639 proved to have most headroom in my experience. I was able to overclock 100% to 4260mhz from a 2130mhz cpu.. X5675 has the highest multiplier of the 95 watt bunch & is my pick, but I haven't actually tried one to see how well it OC's. The X5650 offers best value & overclocks well in all benchmarks I've seen/read. $75 for 12 threads @ 4.2Ghz is easy

 

[Trinamo]

Wow that's pretty impressive. But what about the comparison of the 5650 to the 5675? Is the 5675 the same chip with a higher stock bclk or is there more to it and would it have more OC speed potential than the 5650? I've seen people on the thread playing around with the idea but no solid results unless I've missed it. I know you and I have broken 5Ghz on the 5650s.

 

[Burpo]

Heat is the enemy, and the higher multi pretty much guarantees the X5675 is going to be a bitch to cool @200 bclk.

 

[Trinamo]

Gotchya! Thanks Burpo!

 

[YBS1]

Assuming you have a motherboard that can pull ~215, and hoping for a "best case scenario", I'm of the opinion 5660 and up are the way to go. However, sku's above 5660 will bring you almost certainly nothing that the 5660 won't. We've seen that the absolute wall for these things is just shy of 5GHz (also assuming we aren't talking about a pure 1.75+v suicide run and sub ambient cooling). A 5660 @ 23*215 will put you right at 4.9GHz. 5660, 70 and 75 are all a crap shoot in the cpu lottery IMO, if you must feel like you have to have a shot at 5GHz the 5670 and 75 are probably a better bet as they will give you a little more BCLK leeway. It's still going to be a lottery though, as we've seen Burpo might have the best of the 1366 Xeons on Anandtech, cooling and the lower multiplier of the 5650 seem to hold him back. My 5670 was better than both of the 5675's I had. So much for binning.

 

[YBS1]

Heat is the enemy, and the higher multi pretty much guarantees the X5675 is going to be a bitch to cool @200 bclk.

Nah, because it most likely won't get to 200 BCLK.

 

[Burpo]

The higher multi is the stumbling block then.. I know the 45nm quads don't clock for sh*t. This is the latest from my el cheapo $235 build, and while not very impressive the HD 6970 blows away my GTX 570 in OpenGL.. I was surprised..

 

[YBS1]

The higher multi is the stumbling block then.. I know the 45nm quads don't clock for sh*t. This is the latest from my el cheapo build and while not very impressive the HD 6970 blows away my GTX 570 in OpenGL.. I was surprised..

If you've got the cooling to keep the furnace under control, you can just pour the voltage to those 45nm chips.....just saying. Seeing as how my W3520 isn't worth crap now I'd kind of like to hook it up to my X99 loop 'till it pops and/or fizzles. See what's it's really got if it digs deep, never went completely psycho on the voltage back in the day as it was my main pc.

 

[Burpo]

Meh.. I'm over it.. If I can get this 12 core Haswell V3 I'm working on, I'll be making that step up to X99 that you made & gunning for your top CB score.. lol

 

[YBS1]

Whew...A 12 core just might get that job done. Of course you know that if that happens I will shift the goal posts and say single thread results are just as important. lol

 

[Trinamo]

I forgot exactly what I'm set at but @23x I'm running 4.89ishGhz on my 5650, temps are good voltage is okay but not too worried with a replacement $80 away. But its been running like this for months now.

 

[YBS1]

Unless you have an as of yet unknown motherboard you're not running all 6 cores on a 5650 @ 23X, under a multi-threaded load your top turbo multiplier is 22X. Based on 23X @ 4.89 you are running a 212 BCLK, so you are running 4.66GHz under full load. Pretty impressive considering that sounds like you're using it as a daily driver setting.

 

[Trinamo]

Unless you have an as of yet unknown motherboard you're not running all 6 cores on a 5650 @ 23X, under a multi-threaded load your top turbo multiplier is 22X. Based on 23X @ 4.89 you are running a 212 BCLK, so you are running 4.66GHz under full load. Pretty impressive considering that sounds like you're using it as a daily driver setting.

Correct, I never meant on all six, just when the two hit their 23. And It's running daily just like you said. The H100i keeps it nice and cool.

 

[surfin]

Hi brand new member here. I picked up an old workstation:
The L5640 of course,
GA-X58A-UD3R mb
HD6570 2gb gpu
12gb ram (6x2gb)
misc other bits including an 840pro 512Mb ssd and 2x 1tb hard drives.
All for $600.

I use it for CAD, a software called Archicad which uses all cores.
So I'm keen to get it as fast as possible but stable, and thanking you guys here for helping with that!
I'm thinking the first new item will be a D14 cooler? After a bit of looking around, air seems ok. Correct?

Apart from the fun of overclocking, I'm looking forward to soft modding the GPU, which evidently will take a firepro driver to increase CAD screen work by around 300%...

So great to see a current thread for this old chip
Thanks again

 

[Burpo]

You should be stable running all cores at 3.3Ghz (20X167) easily, & more with increased voltage. Getting it above 180bclk is a bit trickier.

Settings something like this will get you started, but these are with a 45nm Xeon. Your chip will fare better with less heat.

 

[surfin]

Thankyou!

 

[WhoBeDaPlaya]

Got a dual X5675 machine up and running a few weeks ago
No OC though since it's a workstation, but man does it TEAR through Handbrake jobs!

 

[ClockHound]

Got a dual X5675 machine up and running a few weeks ago
No OC though since it's a workstation, but man does it TEAR through Handbrake jobs!

Workstation by day - Funstation by night - Crank up that BCLK after midnight for even more ripping through jobs fun. ;-)
(And post the results)

 

[jforce321]

I actually moved on from my x58 platform a few days ago. Found an i7 3770k/Asus Maximus V Formula deal for only 220 bucks on craigslist, and after overclocking it to 4.6ghz the multithreading performance is equal to my x5650@4.2ghz but my single core score went from 123 to 167 on cinebench, as well as getting all the modern features I was missing from the x58 platform.

http://pcpartpicker.com/p/3dB6gs

http://imgur.com/a/5vuXG

https://www.reddit.com/r/buildapc/c...complete_upgraded_my_old_x58_friend_to_z77_d/

I really enjoyed my x5650 but this was just such a good deal to jump on and make some money back from selling off my x58 stuff.

 

[Burpo]

Good luck with it.. 8 workers isn't enough for me.. I need 12 at least, 16 or 20 would be better..

 

[jforce321]

Good luck with it.. 8 workers isn't enough for me.. I need 12 at least, 16 or 20 would be better..

Yeah i know

I only went with it because of the price and being able to overclock to get the same multicore performance of my x5650 while getting way higher single core and newer board features.

 

[Burpo]

I don't care of you LN2 cool it & clock it at 5.2ghz, it won't produce a 20gb Blu-ray image in less than 1 1/2 hrs. For some of us it's about compute power, and a 3770 won't cut it. I'd have to spend a lot of money to beat my rig at what it does.

 

[Trinamo]

Dad got his 5675 up and running over the past few days with a lot of help from Burpo's post. He managed to get bclk up to 196 and was still able to leave turbo on, temps stayed in the 70's while benchmarking. 4.1 at max non turbo, 4.9 @ 25x on four cores and peaked 5.09 on the other two.

 

[ClockHound]

Dad got his 5675 up and running over the past few days with a lot of help from Burpo's post. He managed to get bclk up to 196 and was still able to leave turbo on, temps stayed in the 70's while benchmarking. 4.1 at max non turbo, 4.9 @ 25x on four cores and peaked 5.09 on the other two.

That's awesome! Burpo gets his five-oh! Not him exactly, but someone he helped on the internet. ;-)

What voltage is required on this 5675? Also shouldn't it be 4.9 on all 6 cores, 25 x 196?

Anyhow, congratulations! Now render some bluray images for Burpo! ;-)