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1366 X58 Xeon 5650

DragonQ said:
This is normal. My coldest and hottest cores are ~10 °C different even at idle.
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Cool

DragonQ said:
Hmm, does it post at stock but not posst when you try to lower all the settings? If so try just leaving all those multipliers at sensible levels instead of always the lowest. QPI and Uncore normally need to be the lowest when you are overclocking the BCLK a lot (as is needed for these chips). Note that the X56xx range can handle 6.4 GT/s QPI, whereas the original Bloomfield lineup could only handle 4.8 GT/s (except for the Extreme Edition chips). For DRAM just set the multiplier to the highest without overclocking your RAM.
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Yes it posts and boots into windows on stock settings just fine.

I think I can cheat with RAM, since I tried overclocking my last CPU the i7 930 and I know that it can handle 1600Mhz and slightly tighter timings @ 1.54V. The only question is, is that fine for this CPU? For the i7 930, it says 1066, for this CPU memory is rated at 1333, so I assume given that everything was working with the 930 @ 1600, should be fine for the X5670 as well?

EDIT: I wonder, maybe it's not booting because Xeons don't like non ECC RAM? So the moment I start playing around with that it doesn't know what to do?
 
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Atomic_Sheep said:
Cool
EDIT: I wonder, maybe it's not booting because Xeons don't like non ECC RAM? So the moment I start playing around with that it doesn't know what to do?
Click to expand...

Nope - I've got two X5650 machines both running standard non-ECC RAM. What motherboard are you using?

*EDIT* I just remembered I had RAM-related problems when I first tried to overclock mine. I disabled XMP and that sorted it for me.
 
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Atomic_Sheep said:
I think I can cheat with RAM, since I tried overclocking my last CPU the i7 930 and I know that it can handle 1600Mhz and slightly tighter timings @ 1.54V. The only question is, is that fine for this CPU? For the i7 930, it says 1066, for this CPU memory is rated at 1333, so I assume given that everything was working with the 930 @ 1600, should be fine for the X5670 as well?

EDIT: I wonder, maybe it's not booting because Xeons don't like non ECC RAM? So the moment I start playing around with that it doesn't know what to do?
Click to expand...
They work fine with non-ECC RAM. They also work fine with faster-than-rated sticks: I run mine at around 1866 MHz. The suggestion to disable XMP might work (if you're using it); I've never used XMP on this system.
 
I have a GA-X58A-UD3R rev 1.0.

I'm pretty sure my XMP is disabled.

Well, I managed to get an overclock which is a start. bclock 160, memory multi x10 @1600, uncore x20 @3200, I think my QPI was x36 @5760, processor was set at x22 and with turbo boost up to x24 @3.8Ghz. I set my memory timings as per my previous overclocking attempts, slight tighter timings and 1.54V. Vcore set to normal 1.225 and DVID set to 0.075V so that's a vcore of 1.3. Those settings seemed to work, it posted and booted and passed 5 minutes of OCCT and Prime 95 (vcore didn't exceed 1.28v).

Next, it stopped posting again. I just changed bclock to 170 and reduced all the multipliers by 1 notch, keeping CPU multi at 22. No post.

Next, I tried bclock 200, memory multi 8 @1600, uncore 16 @3200, QPI x36 @ 7.2Ghz and CPU multi at x20 @4000. No post.

I can't see a pattern why it posted in the first instance but not in the next two. I thought maybe I need to keep my uncore at 3200 and memory at 1600, but that didn't work as could be seen in the 3 attempt. I also know that the CPU posts and boots if I have a multi less than 22. It no longer turbo boosts but it posts and boots, at least at a multi of x21. So hmm, not sure what is going on.
 
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Hmm that's a bit odd. My overclock fails every now and then (maybe once every 2-3 months) and I just enter the BIOS and save and exit then it works, but I've not had it randomly fail to POST every other time like you.
 
I find that the x58 platform does not like RAM running over 1600, and doesn't like more than 3 RAM sticks.

1.54v... is that right for your memory? Mine needs 1.65v.
 
DragonQ said:
Hmm that's a bit odd. My overclock fails every now and then (maybe once every 2-3 months) and I just enter the BIOS and save and exit then it works, but I've not had it randomly fail to POST every other time like you.
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It hasn't failed to post on the over clock that I described. It just seems to like certain settings which to me seem random.

Stu said:
I find that the x58 platform does not like RAM running over 1600, and doesn't like more than 3 RAM sticks.

1.54v... is that right for your memory? Mine needs 1.65v.
Click to expand...

1H memtest stable with 8 9 8 24 timings.
 
Stu said:
I find that the x58 platform does not like RAM running over 1600, and doesn't like more than 3 RAM sticks.

1.54v... is that right for your memory? Mine needs 1.65v.
Click to expand...

Yeah I've experienced similar to you regarding memory, I've only managed to get mine slightly above 1600mhz stable. I am running 6 RAM sticks though, which it's been fine with from day 1. I think the RAM speed really does depend on the RAM you're running, I'm using Kingston stuff, but it's not fancy gaming RAM, just basic desktop cr4p.
 
I attached a speaker to MB, one of those tiny ones that beep when the computer posts successfully. I thought it was going to beep some error codes at me. No luck, doesn't even get to the beeping stage.

I've tried everything now... bclock 170, 180, 200, multipliers for CPU 21,22, 20... nada... the only overclock that works for me is the one that I described. All the other ones result in the MB either turning on, or turning on and going into some power up loop where it's making wierd noises in a loop. Almost sounds like the CD drive is being started or something, even though the CD lights remain off. So something else is making a faint whining noise and then being turned off and this repeats.
 
I doubt it. Admittedly it's my 3rd PSU after I bought the comp given that the first 2 conked it so I returned and got replacements, but this latest one has been solid. It's a seasonic x 750 gold rev 3.0. Rev 1.0 and 2.0 were no good.
 
IME X58 platform only likes more than 3 sticks of Ram if they are the same identical matched type (triple channel kits for instance) otherwise its very hard to stabilise lots of random RAM related BSOD. Some motherboards are better than others as well at handling this. Some work just fine with mismatched RAM.
 
Yesterday I swapped out my X5650 for an X5675, mainly for fun and access to higher multipliers. So far I cannot get it to run my RAM stable at all: it won't post at 1886 MHz and I got a RAM-related BSOD at 1600 MHz during OCCT. I'm using the same DRAM voltage as I was using on the X5650 and that was stable, plus the RAM is rated for 1886 MHz.

Any ideas? I've tried upping the uncore clock and VTT but it doesn't seem to have any effect. I've also tried manually entering timings it's supposed to support but it doesn't like it.
 
You using XMP, custom or standard memory timings? I can get my x5650 running at 4.8ghz if I set RAM to auto everything, but it runs around 1200mhz from memory. I've left mine at 4.4ghz with the memory running at 1603mhz now which is perfectly stable.
 
Manual timings matching the spec sheet: 10-11-10-29 @ 1886 MHz. Works fine on my X5650, won't POST on my X5675. Never tried XMP, how does it even work when you alter the BCLK?
 
I've never used XMP on mine, as my RAM is just basic Kingston low profile 1600mhz non gaming stuff, but when I was looking into these x58's a lot of the info I found on people running big overclocks were using XMP memory profile to get the RAM to run above 1333/1600.
 
My E5649 does 4ghz 24/7 on all cores and turbos to 4.3ish iirc. runs about 1.5v's which is highish but its done so for 3 or 4 years no with no issue. Used to be at 4.4 all cores but gets a little warm and my old h50 no longer likes it that high.
 
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