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Overclocking Woes and Corsair Vengeance - Page 2

post #11 of 17
6/25/12 at 11:53pm
Set to 3t and work to better timing?

Try something absurd like 11-11-11-30 3t and see if it boots.
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post #12 of 17
6/26/12 at 12:09am
Thread Starter 
Quote:
Originally Posted by ASSEMbler View Post

Set to 3t and work to better timing?
Try something absurd like 11-11-11-30 3t and see if it boots.
3T? There isn't such a thing as an option. I've tried setting it to the highest accepted timings and the lowest frequency with no success. Corsair blames the Motherboard and ASUS blames the RAM.
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post #13 of 17
6/26/12 at 6:37am
Quote:
Originally Posted by superericla View Post

3T? There isn't such a thing as an option. I've tried setting it to the highest accepted timings and the lowest frequency with no success. Corsair blames the Motherboard and ASUS blames the RAM.

Asus and Corsair could be correct... if they acknowledge this as a common issue with this particular RAM/mobo model. Some times the two just do not play nice together but usually Corsair will exchange the RAM if it's really a RAM issue. Asus has a history of pushing the specs and being RAM sensitive mobos IME and that of other PC builders.
Edited by AMD4ME - 6/26/12 at 6:39am
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post #14 of 17
6/26/12 at 11:00am
  • xd_1771
  • Mess with the goat, get the horns
  • Forum Moderator

I have an idea as to what might be the problem.  When you overclock a 1055T to 3.9Ghz you use a 286 to 300Mhz bus clock and the RAM multiplier is set at x5.33 (i.e. the multiplier usually used for DDR3-1066).  If you have anything at all (this includes minor timings like tRFC) in your RAM timings profile that is automatically set, it might be too low because you're using the x5.33 multiplier that is optimized for DDR3-1066.  It would help if you could show us a picture of your RAM timings page and then we can go from there.  This has been a common issue for people in situations similar to yours, particularly on GIGABYTE boards that automatically set the tRFCs to 90-110-90-110 for some reason regardless.  If I'm right, then neither the board or the RAM is at fault.  The reason I diagnose this is because when you're running at the default clock as per the ASUS optimal profile without stability issues at the default CPU speed and bus clock, you're using the different x8 multiplier and the auto timings are optimized for DDR3-1600 operation.

 

I'm also curious whether you've tried raising the CPU-NB voltage at all as per 66racer's suggestion.  On an E0 revision x6, having 4 DIMMs at 1600Mhz shouldn't be a problem but you may need some adjustments before it is not a problem.

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post #15 of 17
6/26/12 at 11:12am
  • Schmuckley
  • No keyboard detected! Press F1 to continue..
I'd say.chalk the RAMs up to a loss/sell off cheap..and get some Samsungs or Hypers (STT,Dominators..old school)(Samsungs are cheaper)
Your mobo isn't exactly stellar..either...
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post #16 of 17
6/26/12 at 3:29pm
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post

I have an idea as to what might be the problem.  When you overclock a 1055T to 3.9Ghz you use a 286 to 300Mhz bus clock and the RAM multiplier is set at x5.33 (i.e. the multiplier usually used for DDR3-1066).  If you have anything at all (this includes minor timings like tRFC) in your RAM timings profile that is automatically set, it might be too low because you're using the x5.33 multiplier that is optimized for DDR3-1066.  It would help if you could show us a picture of your RAM timings page and then we can go from there.  This has been a common issue for people in situations similar to yours, particularly on GIGABYTE boards that automatically set the tRFCs to 90-110-90-110 for some reason regardless.  If I'm right, then neither the board or the RAM is at fault.  The reason I diagnose this is because when you're running at the default clock as per the ASUS optimal profile without stability issues at the default CPU speed and bus clock, you're using the different x8 multiplier and the auto timings are optimized for DDR3-1600 operation.

I'm also curious whether you've tried raising the CPU-NB voltage at all as per 66racer's suggestion.  On an E0 revision x6, having 4 DIMMs at 1600Mhz shouldn't be a problem but you may need some adjustments before it is not a problem.
I'll try manually setting all of the timings to known stable values. I have tried raising the CPU-NB voltage quite a bit with no success. My new highest stable overclock is around 3.5GHz with a 250MHz bus clock and the ram at 1666MHz. I'll try going further.
Quote:
Originally Posted by Schmuckley View Post

I'd say.chalk the RAMs up to a loss/sell off cheap..and get some Samsungs or Hypers (STT,Dominators..old school)(Samsungs are cheaper)
Your mobo isn't exactly stellar..either...
I bought this RAM because I'm planning on upgrading to an i7-3820 + Rampage IV Extreme within the next 2 weeks. This isn't the motherboard I plan on using for long, but the RAM is on it's qualified vendors list.
Edited by superericla - 6/26/12 at 3:32pm
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post #17 of 17
6/26/12 at 3:55pm
Thread Starter 
Known Stable Timings:

450

Known Stable Overclock with Raised Voltage:

450

450

I can set the RAM to the exact same timings and even a lower frequency than when it's stable at 14 multiplier 250 bus speed with no success booting. I have tried voltages up to 1.5V with no success.
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