1366 X58 Xeon 5650

madindehead · 10 Feb 2015 at 11:15

P4Clock said:
why turbo off?it give you an extra 2x on the multi.

Didn't people used to turn off the Turbo when clocking i7-920s? Not sure why exactly, why it's probably a hangover from that.

Putty · 10 Feb 2015 at 12:22

Afternoon All! Has anyone tried ECC RAM on their X58 yet? Spotted 12GB for a rather cheap price and snapped it up to give it a go.

dbmzk1 · 10 Feb 2015 at 12:33

Might just go for one of these... £40-£60 for 2 extra cores, a cooler CPU and a few extra 100 MHz... sounds like a bargain!

DragonQ · 10 Feb 2015 at 12:42

madindehead said:
Didn't people used to turn off the Turbo when clocking i7-920s? Not sure why exactly, why it's probably a hangover from that.

Less variability probably. If you're doing stability testing it's easier to see if a CPU is stable at a single multiplier than 2 or 3 different ones (e.g. 21x for 2+ cores, 22x for 1 core).

Stu · 10 Feb 2015 at 15:55

I had turbo turned off for my 920 setup. The thinking was to achieve the highest clock that was stable and stick to that... a turbo boost (e.g. from 4.0 up to 4.2 or higher) would push things too far and result in a crash.

P4Clock · 10 Feb 2015 at 16:30

i have turbo on and EIST on, EIST makes it run at constant turbo until the threshold temp is hit. my system hit a shocking 61c after 20 mins of IBT so never drop below 22x and in programs that use under 4 core's Turbo go's to 23x

tribz · 10 Feb 2015 at 20:22

How many of your cores are going to 4.6GHz, I thought it was just 2 that turbo'd

DragonQ · 11 Feb 2015 at 00:07

I think I managed to get 200 MHz BCLK stable by whacking up the QPI voltage to 1.33 V and resetting the PPL voltage but I can't go much further. 215 MHz won't boot and 210 MHz produces IBT instability. I also nudged up the DRAM voltage to 1.66 V (from 1.64 V) although I have no idea what the actual voltage is. CPU-Z says my RAM is rated for 1.5 V which is definitely wrong.

Might be able to get 200x22 but I'm not sure. If so, that's 4.4 GHz but only when not under really high load due to Asus throttling. I currently have the VCore at 1.33 V too but I doubt it has to be that high.

sgoaty · 11 Feb 2015 at 10:07

I tried for 4.2ghz but gave up at 1.35v it does 4ghz at 1.26v

Stu · 11 Feb 2015 at 10:36

sgoaty said:
I tried for 4.2ghz but gave up at 1.35v it does 4ghz at 1.26v

I'd be very happy with 4ghz at 1.26v. Is that with or without boost?

sgoaty · 11 Feb 2015 at 11:23

It's fixed at 4ghz not really sussed out how to work this bios properly to be honest.

Also I'm at 1.275v with llc on so it's more like 1.3v under load sorry for the duff info.

Stu · 11 Feb 2015 at 18:05

sgoaty said:
It's fixed at 4ghz not really sussed out how to work this bios properly to be honest.

Also I'm at 1.275v with llc on so it's more like 1.3v under load sorry for the duff info.

That's still a nice balance of speed/volts.

Hesky82 · 11 Feb 2015 at 21:13

Hi Chaps, just picked up one of these X5650 processors.

I'm trying to establish my highest BCLK, isolating the ram and CPU by setting a low multiplier for both. I'm currently at 185, which needs a QPI VTT 1.3v to be prime stable, any higher than 185 and it will BSOD

Rather than just increasing the QPI voltage further I just wanted to check to see if any of you guys have any tips on increasing my BCLK.

Interestingly with just 1.2v vcore the chip will prime at 4.07Ghz, when setting the multiplier to 22. It just feels like my QPI voltage will be the limiting factor for my overclock not vcore.
Under full load I'm seeing 53C on air cooling, so there must be more in it!

I'm using a P6X58D-E with latest bios and 3x4gb G.Skill DDR1600.

Appreciate any help

Genoma · 11 Feb 2015 at 22:06

P4Clock said:
why turbo off?it give you an extra 2x on the multi.

Just because I'm happy with the 4GHz overclock, to keep it stable on 22x @ 4.2GHz with turbo on requires more CPU voltage and temps start getting a bit too high for my long Handbrake sessions.

Genoma · 11 Feb 2015 at 22:07

Hesky82 said:
Hi Chaps, just picked up one of these X5650 processors.

I'm trying to establish my highest BCLK, isolating the ram and CPU by setting a low multiplier for both. I'm currently at 185, which needs a QPI VTT 1.3v to be prime stable, any higher than 185 and it will BSOD
Rather than just increasing the QPI voltage further I just wanted to check to see if any of you guys have any tips on increasing my BCLK.

Interestingly with just 1.2v vcore the chip will prime at 4.07Ghz, when setting the multiplier to 22. It just feels like my QPI voltage will be the limiting factor for my overclock not vcore.
Under full load I'm seeing 53C on air cooling, so there must be more in it!

I'm using a P6X58D-E with latest bios and 3x4gb G.Skill DDR1600.

Appreciate any help

Are you sure you aren't just running into instability with high RAM frequencies? Try dropping the RAM multi to check?

Hesky82 · 11 Feb 2015 at 23:16

Hi Genoma, I selected the lowest ram multiplier, its running at 1113mhz with a bclk of 185.
I also selected a cpu multiplier of 12, so ram and cpu were clocking low while I was testing for the max bclk.

I'm currently testing the rams max frequency and I'm up to 1483mhz, oddly I cant get the ram to run at its rated speed of 1600mhz with 9-9-9-24 2t 1.5v on this set-up, pc wont even post!

This is the settings for the highest stable bclk I can get, ht enabled.....

CPU Ratio Setting......................[12.0]
Intel(r) SpeedStep(tm) Tech............[Disabled]
Xtreme Phase Full Power Mode...........[Enabled]
BCLK Frequency.........................[185]
PCIE Frequency.........................[100]
DRAM Frequency.........................[DDR3-1113MHz]
UCLK Frequency.........................[Auto]
QPI Link Data Rate.....................[Auto]

CPU Voltage Control....................[Manual]
CPU Voltage............................[1.2125]
CPU PLL Voltage........................[Auto]
QPI/DRAM Core Voltage..................[1.3]
IOH Voltage............................[Auto]
IOH PCIE Voltage.......................[Auto]
ICH Voltage............................[Auto]
ICH PCIE Voltage.......................[Auto]
DRAM Bus Voltage.......................[1.5]

Hoping I'm missing something simple here.

Cheers

Ste · 11 Feb 2015 at 23:29

Your QPI link and Uncore at default will start to cause issues at high bclk.

Someone will advise what to set them to shortly, can't quite recall. Think one is 36x rather than auto which makes a big difference to stability.

DragonQ · 12 Feb 2015 at 09:06

Stu said:
That's still a nice balance of speed/volts.

Agreed. Personally, if I can get 200x22 working then I'll obviously go with that but if I can't go above 200x20 then I'm just gonna go back down to 182x22 because the voltages needed for that (especially QPI voltage) are about 0.1 V less.

Hesky82 said:
Hi Genoma, I selected the lowest ram multiplier, its running at 1113mhz with a bclk of 185.
I also selected a cpu multiplier of 12, so ram and cpu were clocking low while I was testing for the max bclk.

I'm currently testing the rams max frequency and I'm up to 1483mhz, oddly I cant get the ram to run at its rated speed of 1600mhz with 9-9-9-24 2t 1.5v on this set-up, pc wont even post!

This is the settings for the highest stable bclk I can get, ht enabled.....

CPU Ratio Setting......................[12.0]
Intel(r) SpeedStep(tm) Tech............[Disabled]
Xtreme Phase Full Power Mode...........[Enabled]
BCLK Frequency.........................[185]
PCIE Frequency.........................[100]
DRAM Frequency.........................[DDR3-1113MHz]
UCLK Frequency.........................[Auto]
QPI Link Data Rate.....................[Auto]

CPU Voltage Control....................[Manual]
CPU Voltage............................[1.2125]
CPU PLL Voltage........................[Auto]
QPI/DRAM Core Voltage..................[1.3]
IOH Voltage............................[Auto]
IOH PCIE Voltage.......................[Auto]
ICH Voltage............................[Auto]
ICH PCIE Voltage.......................[Auto]
DRAM Bus Voltage.......................[1.5]

Hoping I'm missing something simple here.

Cheers

Are you sure your RAM is rated for 1.5 V? Back when X58 was new, DDR3 RAM was typically rated for 1.65 V. Also, set your QPI link data rate to the lowest of the three values when overclocking - if you're using a BCLK of 180+ MHz then the lowest selectable speed (36x) will be higher than the usual speed for the CPU so you don't want to push it further.

madindehead · 12 Feb 2015 at 09:59

The QPI Link Data Rate needs to be x36. My i7-920 runs at 4GHz like that, never had an issue. Uncore frequency for my i7 is x13 (some rule about (2*something)+1 MAX).

Having those set properly is very important, and makes a big difference on your overclock iirc. I actually have photos of my BIOS settings for 4GHz (i7-920) if anyone wants a starting point.

Hesky82 · 12 Feb 2015 at 11:02

Cheers guys! I did a little googling last night after Ste gave me a few pointers and I noticed P6X58D users seem to set their uncore frequency exactly double that of their ram.
I did just that and was able to zip straight up to 200BCLK with no additional QPI VTT, I'm sure I could wind the QPI voltage back from 1.3v.

Now I just need to figure out how I can get my ram to post at its rated speed of 1600mhz.
DragonQ, this is the ram I'm using.....

http://www.gskill.com/en/product/f3-12800cl9t-12gbrl#tabs-spec

So these are the ram testing settings I was using last night.....

CPU Ratio Setting......................[12.0]
Intel(r) SpeedStep(tm) Tech............[Disabled]
Xtreme Phase Full Power Mode...........[Enabled]
BCLK Frequency.........................[133]
PCIE Frequency.........................[100]
DRAM Frequency.........................[DDR3-1603MHz]
UCLK Frequency.........................[3208Mhz]
QPI Link Data Rate.....................[Auto]

CPU Voltage Control....................[Manual]
CPU Voltage............................[1.2125]
CPU PLL Voltage........................[Auto]
QPI/DRAM Core Voltage..................[1.3]
IOH Voltage............................[Auto]
IOH PCIE Voltage.......................[Auto]
ICH Voltage............................[Auto]
ICH PCIE Voltage.......................[Auto]
DRAM Bus Voltage.......................[1.5]

I was hoping after lowering the UCLK frequency as discussed, the ram would play ball and post at its rated speed. Unfortunately it did not.

Any suggestions regards to the ram?

Thanks again for your help guys.