z68xp-ud3-issd problem with XMP memory?

[Aussie Allan]

  birket

  How did prime go at the lower speed at the high volts ?.......40mins is a good sign.......might require 1.5 for long term stability if it crashes overnight!

 Aussie Allan

[birket]

  birket

  How did prime go at the lower speed at the high volts ?.......40mins is a good sign.......might require 1.5 for long term stability if it crashes overnight!

 Aussie Allan

Well, its been running overnight without a problem, so that's fantastic news! Thanks for your tips guys. However, I am slightly frustrated by the fact that this Corsair ram is supposed to be set to 1.35v. I have had lots of issues getting these machines stable, and it is all because of this RAM! I will be writing an email to Corsair to highlight my concern.

[Aussie Allan]

  Well that really good news if only semi-good news for you personally......you seem to have a belief of the virtues of memory that runs at 1.35v

  Could you share your thoughts behind this ?

  All I could add if you really want the lowest voltage possible is to reduce the volts .04/.05 at a time and test accordingly......as you are probably be aware.....tighter memory timings will play a far bigger part re performance then brute Mhz speed

  Aussie Allan

[birket]

you seem to have a belief of the virtues of memory that runs at 1.35v

  Could you share your thoughts behind this ?

It has nothing to do with a belief or virtues of memory that runs at 1.35v: these ram modules are designed to run at 1.35v, but as I have shown, they don't. I don't care if they are 1.35v, 1.5v, 1.65v or 13v as long as they work as the manufacturer states!

Here's a review of the RAM if you are interested:- http://www.overclock3d.net/reviews/memory/corsair_vengeance_lp_8gb_1_35v_review/1

[Aussie Allan]

  You know....no matter how much I read and people I ask.....there seems to be no real reason behind ultra-low rated memory except a higher max voltage potential ...... some company's push the power saving angle but the difference between 1.5 and 1.35v is about 2Watt/h per week running 24/7

  Here's an interesting snip from a link I'll include at the bottom if you find it interesting....

  DDR3 was specified by the JEDEC Solid State Technology Association to run between 1.5 V and 1.575 V (a 30% drop from DDR2's 1.8 V), and to withstand voltages of up to 1.975 V before taking damage.

                     http://www.tomshardware.com/reviews/lovo-ddr3-power,2650.html

  Let us know if you need any further help.

  Aussie Allan

[birket]

  You know....no matter how much I read and people I ask.....there seems to be no real reason behind ultra-low rated memory except a higher max voltage potential ...... some company's push the power saving angle but the difference between 1.5 and 1.35v is about 2Watt/h per week running 24/7

  Here's an interesting snip from a link I'll include at the bottom if you find it interesting....

  DDR3 was specified by the JEDEC Solid State Technology Association to run between 1.5 V and 1.575 V (a 30% drop from DDR2's 1.8 V), and to withstand voltages of up to 1.975 V before taking damage.

                     http://www.tomshardware.com/reviews/lovo-ddr3-power,2650.html

  Let us know if you need any further help.

  Aussie Allan

Interesting. Its bloody annoying though. You wouldn't believe how much swearing has been flying around our office over the last few days, all because of a bloody voltage specified by the manufacturer that isn't appropriate! The money saving side of it didn't play a part in my decision to buy the memory. It was available from our supplier and ran at the right speed and seemed a decent price. I then found the above review and it gave it a good write-up. This was really what made me buy it. Nothing at all to do with the voltage.

Thanks for your help.

[Dark Mantis]

It is good to hear that you have now got the issue sorted and I too can't understand why they try and make low voltage memory when most of the time it needs increasing to get stability. I think a lot of it is simply trying to appeal to the "save the earth" group, even though it is all a false economy.