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Core 2 Duo E8600 to Core i5 2500K Experience/Impressions - Page 3

post #21 of 24
Thread Starter 
Quote:
Originally Posted by Ishinomori View Post

it wasn't .5v that i remember, it was within .1v...
Say RAM is OC'd using 1.65v, then VCCIO should be set to 1.15v...
1.15V to 1.65V is a difference of 0.5V though, not 0.1V.

I heard something about 1.5V being the standard, and to stay within ~5%, meaning 1.35V and 1.65V both actually fall just a bit outside that, but are still supposed to work okay. I think that's what I recall.

Either way, four modules and 16GB of it at 1.35V booted up right away with it (although it defaulted to 1.5V, once I loaded it's profile, it's run fine).

I did an hour and fifteen minutes with Intel Burn Test at maximum RAM stress level, so what settings, and how long, should I go with for Prime 95?
post #22 of 24
Quote:
Originally Posted by Princess Garnet View Post

1.15V to 1.65V is a difference of 0.5V though, not 0.1V.
I heard something about 1.5V being the standard, and to stay within ~5%, meaning 1.35V and 1.65V both actually fall just a bit outside that, but are still supposed to work okay. I think that's what I recall.
Either way, four modules and 16GB of it at 1.35V booted up right away with it (although it defaulted to 1.5V, once I loaded it's profile, it's run fine).
I did an hour and fifteen minutes with Intel Burn Test at maximum RAM stress level, so what settings, and how long, should I go with for Prime 95?

You are correct, i must've still been asleep when i posted! doh.gif

Blend standard for 12hrs would give you a fair idea.
post #23 of 24
Thread Starter 
I think I just may have about the hottest running Sandy Bridge under the sun or something.

3cNR7.jpg

Despite that...

SHbbI.png

I'm unwilling to give it more voltage with temperatures like that. Unless dropping the PLL from 1.70V to 1.65V made the difference, it seems it needs more voltage.

The run with Intel Burn Test in my first post tested stable for much longer, but that was without AVX. Prime 95 later showed it to be unstable, so I bumped Vcore a bit (I actually left it untouched and enabled LLC to it's lowest setting which effectively brought it up a bit), and now it's apparently still unstable.

This is like my Core 2 Duo E8400 C0 stepping all over again, maybe worse. Moving to that to my Core 2 Duo E8600 was a night and day difference. I'm now eying Ivy Bridge and hoping it can be like that all over again.
post #24 of 24
I'm running my i5 2500k at 4GHZ on Coolermaster hyper TX3 air cooler and stock voltages stable , don't need anymore its more than fast enough for anything i can think of using it for. Of course i still like the old i5 655K @ 4GHZ i'm happy with it too lol
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