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Xeon Owners Club

This type of ram work better with relaxed timing, I tried in any case to pull them
2400-10-12-12-28.jpg
with the low voltage on the cpu they give their best performances
 
You're doing it wrong. The benchmark results appear so good because you're running the uncore (northbridge) around 3600 MHz or above. The real-time bandwidth is a lot lower than that, and since QPI data strap is lower than uncore, you could face stability issues.

QPI should be higher than uncore, and if that's impossible to achieve, at least try to obtain 1:1 ratio. Since you're running DDR 2400 and above, try to keep DDR voltage below 1.65v and QPI/VTT below 1.35v, as both are deadly to the CPU.

And don't forget to use HCI MemTest with no pagefile to test DDR stability. MemTest86 is bad for checking DDR overclock stability. Prime95 v26.6 custom 512K FFT test with 75% of RAM combined with LuxMark to test QPI and uncore stability.
 
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Regeneration said:
You're doing it wrong. The benchmark results appear so good because you're running the uncore (northbridge) around 3600 MHz or above. The real-time bandwidth is a lot lower than that, and since QPI data strap is lower than uncore, you could face stability issues.

QPI should be higher than uncore, and if that's impossible to achieve, at least try to obtain 1:1 ratio. Since you're running DDR 2400 and above, try to keep DDR voltage below 1.65v and QPI/VTT below 1.35v, as both are deadly to the CPU.

And don't forget to use HCI MemTest with no pagefile to test DDR stability. MemTest86 is bad for checking DDR overclock stability. Prime95 v26.6 custom 512K FFT test with 75% of RAM combined with LuxMark to test QPI and uncore stability.
Click to expand...


In this specific case, I was not looking for stability, but for maximum frequency.

the uncore was set to look for the maximum frequency of memories

however you're right the system broke after a few seconds.
 
Making some progress (in torturing the cpu)

And one question - how are thermals in a custom loop? I wanted to go custom loop one day and I thought I'd put my xeon under a custom loop - are temps excellent vs a 360mm aio?
 

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I have a Xeon 5520 dual core HP ML350 G6 server I just got and trying to up the performance a bit. So got the PCIe cable to allow 150w video cards and a Asus GTX 560 card. Hooked it up and system blew up .. I suspect a P/S or the Backplane (both I have ordered). Just as a FYI system now does a 5 second cycling boot that never POSTs, anyways. I suspect the used 560 card was the culprit since the wattage should have been within 150w ...perhaps it's shorted. IF I can get the system working again I'm planning to get a gtx1050 which has a rating of 75w, but does require a additional 6 pin power connector. Any advice? (other than it's not worth upgrading).
 
Are you sure you got the right part for that ML350? The server parts are sometimes very specific and can have issues if you have the wrong one.

Also, servers are picky about video cards and can mess around with other stuff like the i2o. I find that upgrading the cpus is an easier route to more performance.
 
SamirD ... It's already (partially) upgraded ... when I got it, it was a single core with less memory and integrated graphics. I added the 2nd processor, memory and a 8500GT card to test it with ... everything was great. Then I made the mistake of adding too powerful a video card (or a faulty card) and blew the Backplane or power supply, not sure which yet ... or what else was damaged at the same time. Now gotta wait 2 months to get replacement parts from China and hope all is well.
 
Hey chwk5520, I actually have the same server. I upgraded mine to the x5672 CPU x2 with 48gb of ddr3 ram. I had a r7 250x, Rx 480, gtx 560 ti, gtx 750 ti and currently a gtx 770. It is running fine. You might have a faulty GPU, wrong PCIe cable or you might have plugged it into the wrong slot. I believe there were 2 sockets for the PCI-E cable.

When you get a new psu and backplane, leave the gpu and pci-e cable out. see if it boots.
 
gizmo613 ... Sounds like a nice system. No problems running the gtx750ti... doesn't that have a TDW of 180w?. Yes I tossed the gtx560 GPU (got it second/third hand anyways) so trying to keep the wattage lower this time, but keep the performance reasonable. Currently using a I5 system so the dual core will be a upgrade, even with the less powerful E5520's. Perhaps in the future I will upgrade to higher end CPU's and overclock them, but for now getting it to start will be a victory. I did see two 10 pin ports on the backplane (both unlabeled) so I assumed that since I HAD dual P/S each had it's own connector. Perhaps I plugged into the Primary P/S and with the multiple fans and drives the wattage spiked, or like you said ... a bad GPU.
 
Don't think you can overclock on those hp servers.
The gtx 750ti is only 60w and the gtx 770 is a 230w card. I have 750w for the server plus another 750w for redundancy.
 
gizmo613 said:
Hey chwk5520, I actually have the same server. I upgraded mine to the x5672 CPU x2 with 48gb of ddr3 ram. I had a r7 250x, Rx 480, gtx 560 ti, gtx 750 ti and currently a gtx 770. It is running fine. You might have a faulty GPU, wrong PCIe cable or you might have plugged it into the wrong slot. I believe there were 2 sockets for the PCI-E cable.

When you get a new psu and backplane, leave the gpu and pci-e cable out. see if it boots.
Click to expand...
Wait, how did you get the 770 to work? Don't those require external power to the gpu?
 
A special pcie cable is needed.
 
Thank you! Did you lose i2o on it when you added any of the gpus or have any issues with it?
 
not sure what i2o does but I did update its firmware to the latest one for the ml350 g6. I had windows 10 installed.
 
Say do any of you know for certain the difference between the 2 ten pin connectors on the backplane? I suspect that one is for each of the Hot swap power supplies (assuming both are used). Unfortunately I can't check my theory with a meter until I get my system working again. Which would mean that if you plugged the special PCIe cable into the second one and only used one power supply, there should be no power through the cable? I've downloaded several G6 manuals but other than saying the 10pin is for the 'special cable', they don't actually say which connector or the difference!
 
The picture in the manual actually shows the first/top connector being used for the pci-e cable. But yes, it doesn't say what the other connector is used for.
 
chwk5520 said:
Say do any of you know for certain the difference between the 2 ten pin connectors on the backplane? I suspect that one is for each of the Hot swap power supplies (assuming both are used). Unfortunately I can't check my theory with a meter until I get my system working again. Which would mean that if you plugged the special PCIe cable into the second one and only used one power supply, there should be no power through the cable? I've downloaded several G6 manuals but other than saying the 10pin is for the 'special cable', they don't actually say which connector or the difference!
Click to expand...
Having a redundant Power Supply means it should run if one is faulty or removed.
The position of the cable shouldn't matter.
 
gizmo613 said:
not sure what i2o does but I did update its firmware to the latest one for the ml350 g6. I had windows 10 installed.
Click to expand...
It's a remote control capability for the server, typically on a dedicated nic or vlan. Usually this interferes with gpus on some of the older servers of this generation. (I know it does for sure on the Dell Poweredge 2950 series.)
 
Hey everyone back here for an update been messing with the xeon e5450 eo revision managed to get it upto about 4.37ghz @ 1.336v as i did the cinebench test and got 486cb points still far fetched for my 4.4ghz goal
 
What is the difference between the e5450 and the x5450? Specs they seem about the same except their tdps are vastly different. How does that come out in performance?

Looking to get a xeon to slap in this shuttle xpc sx38p2 pro i found on facebook for peanuts to give to my mate.

chwk5520 said:
Say do any of you know for certain the difference between the 2 ten pin connectors on the backplane? I suspect that one is for each of the Hot swap power supplies (assuming both are used). Unfortunately I can't check my theory with a meter until I get my system working again. Which would mean that if you plugged the special PCIe cable into the second one and only used one power supply, there should be no power through the cable? I've downloaded several G6 manuals but other than saying the 10pin is for the 'special cable', they don't actually say which connector or the difference!
Click to expand...

I actually had one of these servers and used the ten lin connectors for my gpu. They are the 150w outputs for the graphics options they had (i think with a fair bit of certainty) . I used both at the same time with only 1 psu unit in the machine to balance the load across the two 150w outputs. If you get some cables off some dodgey chinese seller make sure to check the wiring as mine came wrong and i had to rewire the 10 pins totally.

I had a 980ti in mine if you where curious. I did have a molex to 8 pin adapter for a while that worked... Just.
 
lyra said:
What is the difference between the e5450 and the x5450? Specs they seem about the same except their tdps are vastly different. How does that come out in performance?
Click to expand...

Only thing i see is TDP, X5450 is 120W and Tcase 63c and the E5450 is 80W Tcase 67c
 
And with 775 mods its just stick the sticker on, mod the socket and bios updste and its off to the horses yeah?
 
The xeon e5450 is a better cpu for lower electricity bill and x5450 is more power hungry will cost more to run. I been messing around with the e5450 as it was hard modded already no sticker is needed on asus p5q premium trying to find a sweet spot in the bios settings in order to get 4ghz with lower power comsumption with low vcore and low fsb term voltage. Most of the time i was having trouble with freezing and unstable ram timings. But it getting there slowly as i been stressing testing and testing damanding cpu and ram based games to iron out the issues. I would keep a log of details in order which settings i changed :)
 
So no real performance difference between the e5450 and the x5450?
 
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