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1366 X58 Xeon 5650

MaXxOnOC said:
@shea1980 & @Joxeon: I've 3 identical 1600Mhz 1,5v sticks and tried many times lifting the SPD to 8. But with otherwise same settings (only RAM voltage I've slightly raised every try bit-wise up to 1,6v max.) the board don't want to boot with those 1520MHz on RAM (and 3040MHz QPI). So I left it at 1140MHz RAM because it was stable. Have you guys any advice to get the RAM stable @ 1520MHz?
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Have you tried raising qpi voltage? Up to 1.35 is safe, I think I needed 1.31 to get my ram stable at 1600.
 
Joxeon said:
Have you tried raising qpi voltage? Up to 1.35 is safe, I think I needed 1.31 to get my ram stable at 1600.
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Not on RAM test, my QPI Voltage is 1.295V in bios and it shows 1.280V in Windows (since I've OCed the CPU back in november). A little question: 1520MHz is heavy over the max. 1333MHz for the RAM under Xeon's - is it save to overclock this?
 
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MaXxOnOC said:
Not on RAM test, my QPI Voltage is 1.295V in bios and it shows 1.280V in Windows (since I've OCed the CPU back in november). A little question: 1520MHz is heavy over the max. 1333MHz for the RAM under Xeon's - is it save to overclock this?
Click to expand...

Yeah it's fine, I've seen people with 2000+ on ram. If moving the qpi voltage doesn't work then try lowering qpi frequency as over 3000 it can become unstable but it's no problem lowering this a few ticks. Also try bumping the dram voltage a bit as even though it says 1.5v you can give it a bit more to ensure stability.
 
Joxeon said:
Yeah it's fine, I've seen people with 2000+ on ram. If moving the qpi voltage doesn't work then try lowering qpi frequency as over 3000 it can become unstable but it's no problem lowering this a few ticks. Also try bumping the dram voltage a bit as even though it says 1.5v you can give it a bit more to ensure stability.
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I'll give it a try and test it very soon, then I'll post my experience and summary.
 
Only with QPI voltage raising up bit-wise to 1.355V max. it wasn't successful. Same with RAM up to 1.60V + QPI.
Can't lower the QPI frequency directly, only 4 rough factor steps (Slow mode, x8, x12 ...).

Please help.
 
MaXxOnOC said:
Only with QPI voltage raising up bit-wise to 1.355V max. it wasn't successful. Same with RAM up to 1.60V + QPI.
Can't lower the QPI frequency directly, only 4 rough factor steps (Slow mode, x8, x12 ...).

Please help.
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What are you setting uncore too when trying 1520 ram speed?
 
Computer says no. As far as I can remember this must be double value of RAM speed, or not? The next lower step is 1140MHz on RAM (and logically 2280MHz uncore), these settings running stable since november on my system.

Another version: The next uncore steps don't have any corresponding RAM values.

Yeah but no but yeah the rough steps are hillarrious dumb.
 
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MaXxOnOC said:
Computer says no. As far as I can remember this must be double value of RAM speed, or not? The next lower step is 1140MHz on RAM (and logically 2280MHz uncore), these settings running stable since november on my system.

Another version: The next uncore steps don't have any corresponding RAM values.

Yeah but no but yeah the rough steps are hillarrious dumb.
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It dont have to be 2x ram speed you can run it x1.5 or any inbetween alternatively you can run more than x2 I had x2 +2 stable on mine but over 3600 uncore become unstable on my board.
 
Joxeon said:
It dont have to be 2x ram speed you can run it x1.5 or any inbetween alternatively you can run more than x2 I had x2 +2 stable on mine but over 3600 uncore become unstable on my board.
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Try lowering it to 2280. And if it works then work your way up.

What ram do you have?
 
MaXxOnOC said:
Nope RAM at 1140 (half of uncore). Can I get the RAM to 1520 @ 2280 uncore? Think it was "forbidden" (because of the rule "RAM 1/2 uncore").
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The 1/2 only applies to Bloomfield chips, westmere ep chips of which the x5670 is can happily run uncore at only 1.5x ram speed so 2280 is fine with 1520 ram.
 
No luck with 1520MHz @ RAM and with no changing the uncore (2280MHz, last stable), no matter the other settings:

RAM @ 1,5V > QPI volt. up to max. 1,335V > stuck at win-boot-logo
RAM @ up to 1,6V > QPI volt. up to max. 1,335V > stuck at bios (wrong RAM size detected)

Tried every 1 step upwards.

Any suggestions?
 
MaXxOnOC said:
No luck with 1520MHz @ RAM and with no changing the uncore (2280MHz, last stable), no matter the other settings:

RAM @ 1,5V > QPI volt. up to max. 1,335V > stuck at win-boot-logo
RAM @ up to 1,6V > QPI volt. up to max. 1,335V > stuck at bios (wrong RAM size detected)

Tried every 1 step upwards.

Any suggestions?
Click to expand...

Not sure what else to suggest, it may just be a weak imc or the fact that your using 8gb sticks.
 
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