Intel Xeon L5639 Hexa(6) Core LGA1366 Price:US $79.80 Used Ebay Seller

Got mine in... no matter what I set it to, I can not get it to boot at all if it is above stock.

Very disappointed so far... anyone with a Gigabyte EX58 board get this working? If so, what settings did you use?

I've tried lowering / raising the QPI, CPU voltages, everything. Tried it at even 150 BCLK, and it still refused to boot. At this point, I may end up just going back to my i7 920.

What board did you use?
 
Gigabyte EX58-UD4P with latest BIOS.

No matter what, even if I did 134 MHz BCLK, it would not boot. No matter what settings I tried, it would just not boot, and then it would boot informing me overclocking failed.

Put my Core i7 920 back in, loaded my old profile, and it's working perfectly again.

I'm guessing I either got very unlucky in the chip lottery, or this board doesn't really support 6 core Xeons and overclocking.
 
Gigabyte EX58-UD4P with latest BIOS.

No matter what, even if I did 134 MHz BCLK, it would not boot. No matter what settings I tried, it would just not boot, and then it would boot informing me overclocking failed.

Put my Core i7 920 back in, loaded my old profile, and it's working perfectly again.

I'm guessing I either got very unlucky in the chip lottery, or this board doesn't really support 6 core Xeons and overclocking.

Every single Gigabyte UD3 and UD4 board I've had has been a HUGE pain in the ass to overclock to the point where I will never buy another.

Have you tried checking for beta bioses? I think tweaktown has an area where they post a lot of them for the gigabyte boards.
 
Got mine in... no matter what I set it to, I can not get it to boot at all if it is above stock.

Very disappointed so far... anyone with a Gigabyte EX58 board get this working? If so, what settings did you use?

I've tried lowering / raising the QPI, CPU voltages, everything. Tried it at even 150 BCLK, and it still refused to boot. At this point, I may end up just going back to my i7 920.

Did you by chance disable all power savings? anything labeled c-state, c1,c1e stuff, speedstep, raise cpu pll voltage (mines at 2volts) qpi (1.35) idk lots of settings like manually setting multiplier or trying auto...could be just that one setting your missing....how long have you been trying? try setting ram to higher voltage and slower speed?

If you take some pictures of all relevant bios screen settings, we can better take stabs at something you haven't tried
 
Anyone have any insight if the L5639 is compatible with the MSI boards? I have a MSI Pro E that im looking to use.
 
Gigabyte EX58-UD4P with latest BIOS.

No matter what, even if I did 134 MHz BCLK, it would not boot. No matter what settings I tried, it would just not boot, and then it would boot informing me overclocking failed.

Put my Core i7 920 back in, loaded my old profile, and it's working perfectly again.

I'm guessing I either got very unlucky in the chip lottery, or this board doesn't really support 6 core Xeons and overclocking.


if it works on stock settings it will overclock, you just need to take it slow and figure out whats causing the problem, first thing you need to do is to clear your cmos and load bios defaults , ... then up the voltage on cpu and qpi, reboot, then set your ram multiplier/voltage/timings right, reboot.. and then start raising bclk
 
Last edited:
Every single Gigabyte UD3 and UD4 board I've had has been a HUGE pain in the ass to overclock to the point where I will never buy another.

Have you tried checking for beta bioses? I think tweaktown has an area where they post a lot of them for the gigabyte boards.

Running absolute latest beta BIOS that's modified too from Tweaktown (needed support for 4TB drives in RAID)

I never honestly had an issue, when I first bought the board, I set it up for 3.6 GHz by upping the voltage and the BCLK, and was basically done. Has ran fine ever since.

Did you by chance disable all power savings? anything labeled c-state, c1,c1e stuff, speedstep, raise cpu pll voltage (mines at 2volts) qpi (1.35) idk lots of settings like manually setting multiplier or trying auto...could be just that one setting your missing....how long have you been trying? try setting ram to higher voltage and slower speed?

If you take some pictures of all relevant bios screen settings, we can better take stabs at something you haven't tried

Tried disabling and enabling all of that. I tried CPU PLL voltage at 1.9 volts, QPI from 1.35 to 1.4, tried leaving multi to auto / 16 / 18, underclocked / upped memory voltages, nothing.

I will throw it in again tomorrow morning and try some more.

if it works on stock settings it will overclock, you just need to take it slow and figure out whats causing the problem, first thing you need to do is to clear your cmos and load bios defaults , ... then up the voltage on cpu and qpi, reboot, then set your ram multiplier/voltage/timings right, reboot.. and then start raising bclk

I had tried clearing the CMOS, however, I did not think to do the multi-step process you described. I will try that tomorrow.

Any other Gigabyte owners try this chip yet? If so, please chime in with your findings.
 
Gigabyte EX58-UD4P with latest BIOS.

No matter what, even if I did 134 MHz BCLK, it would not boot. No matter what settings I tried, it would just not boot, and then it would boot informing me overclocking failed.

Put my Core i7 920 back in, loaded my old profile, and it's working perfectly again.

I'm guessing I either got very unlucky in the chip lottery, or this board doesn't really support 6 core Xeons and overclocking.

I might suggest you try higher qpi/vtt voltage you can up it to 1.5v and throttle it down to 1.48v when you achieve slight overclock. Also bump ioh voltage to 1.2v.
 
Every time i wandered away from asus boards, it ended in terrible results...I don't think i have ever even cleared cmos since coming back to asus.....and this board in general....never been happier. heck intel will be making 8 core 16 thread 4ghz or better stock cpus (for cheap) when i feel the need to change boards again an then it will be to another asus board.
 
Last edited:
Most of the bios settings I'm using was easily discovered from simple Google searches of post dating back 4 years ago
Someone asked for My current settings, and here it is, as i had a choice between 212blck at 18x turbo (power saving off) or 205blck at 20x turbo (power saving on)
For the moment, I'm sticking with the 20x turbo:

og0g.jpg
[/IMG]
4tkn.jpg
[/IMG]
rlkz.jpg
[/IMG]

http://valid.canardpc.com/3m8ykp
3m8ykp.png
 
Last edited:
Try upping your IOH voltage. At stock 1.10v to the IOH, my DX58OG can do ~140 to 150MHz BCLK. It gets to 185MHz with 1.225v and is currently at 200MHz for testing.
 
Last edited:
about 170 idle and 350 full load...course it be closer to 450-500 running bf3 which stresses the hole machine

Thats HUGE, mine whole machine incl monitor peaks out at 380/400w, and that chip is rated 60w tpd vs i7 920 130w tpd..:confused:
 
Just in-case anyone is wondering for future purchases.

I ordered a L5639 from texas for $70 best offer, and it came in really good condition. It also works without a single issue in the Asus Rampage II Extreme (original model, latest bios). Right now I have mine sitting at 18x200, but have booted as high as 212 without BSOD. I haven't tried to really tried to push the chip further. It runs soooo much cooler than my 920 C0.... My average cpu usage just browsing the web is nearly 0% on average now when it was about 5-10% before.... ALSO, I use 6 sticks of 2GB Corsair Dominator 1600Mhz with no problems (maybe I'm lucky since I've read of a few issues around the web with dimm slots and memory controllers).
 
Thats HUGE, mine whole machine incl monitor peaks out at 380/400w, and that chip is rated 60w tpd vs i7 920 130w tpd..:confused:
Look at his sig. He has a 7970 and you have a 7850. A quick google check and I found that the TDP of a 7850 is 130W and a 7970 is 250W. Huge difference there. Much bigger difference there than the difference between cpu tdp.
 
Got mine right where I wanted. 3.6 ghz with turbo on, speedstep on, etc...

BLCK at 200
Vcore at 1.25 (low vdroop)
QPI at 1.33
 
you must be doing something wrong because raising the voltage is not overclocking anything, it must be your memory divider thats set wrong

Doubtful, as I've tried setting the dividers around as well. I don't think it's me not knowing what I am doing, more as in I don't think the board want's to really support it. I just went back to my i7.
 
my best so far!!!
awly.th.jpg
[/URL][/IMG]

Totally forgot to test the turbo stability when making that post...people don't forget to run intelburn test with 2 threads at VERY HIGH stress level and then set the affinity in task manager to run on only 2 cores.....you be surprised how fast it will crash you pc even though it ran 30 test using all cores at non turbo speed. From what i can tell if you do't set affinity in task manager it will load balance and weaken the test....as in it will be using several cores instead of just 2. On my Asus mb it hits a 20x multiplier and holds at it forever if only burning 2 cores. So i thought mine was stable at 212...lol turns out its only stable at 205 when doing this last.

With that said..its the first test i run now to stress test....course it might not be such a big deal on different mb's that run closer to my turbo all the time...for example when i stress test on 12 cores...my multiplier drops to 16X....when testing only 2 corese it jumps to 20x
 
Got mine right where I wanted. 3.6 ghz with turbo on, speedstep on, etc...

BLCK at 200
Vcore at 1.25 (low vdroop)
QPI at 1.33

Is there any point to using speedstep on aside from possibly a laptop?
Just wondering
 
Well, I bit. 24 Threads here I come :)

SUPERMICRO X8DAL-i-O Dual LGA 1366 Motherboard - $207

INTEL XEON L5639 - 2 @ $70 (pending best offer acceptance) = $140

Cooler Master Hyper 212 EVO - 2 @ $31.51 = $63.02

Seasonic SS-660XP2 ATX 12V/EPS 12V, 660W, 80 PLUS PLATINUM - $100

I already have RAM and a case so my total comes out to $510 and there's a $20 rebate that offsets a good part of the tax.

$500 is a nothing to sneeze at, but that's a heck of a lot of quality hardware for the price. I've held onto my q9550 for long enough but it's started to fritz out on me (though it might just be the PSU).

Pretty crazy that even if you need RAM, case, and SSD you could still do it all for less than $1K w/ shipping and tax.
 
Last edited:
As an eBay Associate, HardForum may earn from qualifying purchases.
As an Amazon Associate, HardForum may earn from qualifying purchases.
Well, I bit. 24 Threads here I come :)

SUPERMICRO X8DAL-i-O Dual LGA 1366 Motherboard - $207

INTEL XEON L5639 - 2 @ $70 (pending best offer acceptance) = $140

Cooler Master Hyper 212 EVO - 2 @ $31.51 = $63.02

Seasonic SS-660XP2 ATX 12V/EPS 12V, 660W, 80 PLUS PLATINUM - $100

I already have RAM and a case so my total comes out to $510 and there's a $20 rebate that offsets a good part of the tax.

$500 is a nothing to sneeze at, but that's a heck of a lot of quality hardware for the price. I've held onto my q9550 for long enough but it's started to fritz out on me (though it might just be the PSU).

Pretty crazy that even if you need RAM, case, and SSD you could still do it all for less than $1K w/ shipping and tax.


What will you be doing with a machine with 24 threads? Not that Im not impressed, its just i have a hard time really stressing my 12 thread machine unless i feel like heating the room with a boinc project...course i bet you could bd_reuilder a blue ray in like half an hour which would be nice
 
As an eBay Associate, HardForum may earn from qualifying purchases.
As an Amazon Associate, HardForum may earn from qualifying purchases.
I've been wanting to experiment with parallel processing more. I have a CUDA card ready to go but didn't have a spare pcie slot to put it in.

And also, I rarely upgrade my computer now-a-days so figure might as well go all out :)
 
How has this CPU been for gaming for you guys? And how does it compare with a 2500K, or other similar Intel quad core CPU, 920, etc.
 
The Xeon L5639 CPU is 37% more energy efficient. The 2500k Supports AVX instructions. On something that uses all the cores you would have to overclock the 2500k to death to get it close to the Xeon. But games are slowly catching on using all the threads. There is a handful out there so far. But for $70 bucks why not right?

How has this CPU been for gaming for you guys? And how does it compare with a 2500K, or other similar Intel quad core CPU, 920, etc.
 
Currently i have Q6600 with abit IP 35pro and gtx 460..i mostly play battlefield 3..if i get this processor and overclock it to around 3.2 will it perform similar to 3770k at stock speed? my brother has 3770k and 7970ghz edition..i m going to get R9 280x which is pci express 3.0 and x58 mobo is 2.0 is it worth investing in this cpu and x58 mobo or get new generation haswell..i mostly do gaming but 6 core would be nice for future..
 
A 3770k @ 4.5GHz would lose to a L5639 @ stock under a application that uses all the threads fully. Plus as I mentioned in the other thread. Plus the Xeon L5639 CPU is more energy efficient.
 
what's the typical power draw from the outlet when running all 6 cores overclocked to say 3.2-3.6GHz?
 
A 3770k @ 4.5GHz would lose to a L5639 @ stock under a application that uses all the threads fully. Plus as I mentioned in the other thread. Plus the Xeon L5639 CPU is more energy efficient.


Are you absolutely sure this is correct? There are 2 architectures worth of IPC improvements between the two, the 3770k at 4.5 is clocked nearly 2x what the L5639 turbos to at stock. It's 4 cores vs 6 cores but the frequency difference and IPC advantage of the Ivy chip seems like it might be hard to overcome.

Overclocked, sure... but stock?
 
Back
Top