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i7 3820 - 4820 Overclock Club - Page 100

post #991 of 6499
^^Can't say anything about your board, but fwiw all the 3820s I've come across can do 5ghz.


Quote:
Originally Posted by HF Venom View Post

aight went into bios had a look around and set the multiplier to 43 and that is all I did. went in to the os started prime 95 and than had a look at things.

is the vcore voltage thingy too high? do I need to do something about that?
also I really appreciate you guys helping me wink.gif

As mentioned, vcore is way too high. Auto voltage for the lose.
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post #992 of 6499
Quote:
Originally Posted by SimpleTech View Post

Yeah that voltage is too high for that minimal overclock. I would try lowering it to 1.25v (or less if possible).

I put in 1.23v and ran prime95 again, temps looked a bit better now. cpu-z keept showing me that under full load vcore had like 1.216v pretty much constantly and in idle the vcore is like 1.224v eh-smiley.gif
is that normal? seems kinda odd to me...
post #993 of 6499
Quote:
Originally Posted by HF Venom View Post

I put in 1.23v and ran prime95 again, temps looked a bit better now. cpu-z keept showing me that under full load vcore had like 1.216v pretty much constantly and in idle the vcore is like 1.224v eh-smiley.gif
is that normal? seems kinda odd to me...

That's a lot better. Voltage fluctuates due to vdroop. Under load the voltage line sags, you can combat this by using LLC to boost voltage under load but you don't want to go crazy because a little vdroop is good.
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post #994 of 6499
Well I'll leave it as it is now smile.gif Thanks for the help guys!
post #995 of 6499
Quote:
Originally Posted by tsm106 View Post

^^Can't say anything about your board, but fwiw all the 3820s I've come across can do 5ghz.
As mentioned, vcore is way too high. Auto voltage for the lose.

i cant seem to run my stable @ 5ghz even on my h100....have tried up to 1.47 volts @ 125 x 41 still no go...idk...
post #996 of 6499
Quote:
Originally Posted by zerokool_3211 View Post

i cant seem to run my stable @ 5ghz even on my h100....have tried up to 1.47 volts @ 125 x 41 still no go...idk...

It takes me 1.48 to get stable at 5.0. I've found that a lot of my stability problems are due to my VCCSA not getting enough juice when I start pushing my ram to higher clocks.
Quote:
Originally Posted by I7guy View Post

i cant get anything stable past 4.3, i think either my board sucks or my cpu sucks.
ive tried everything lol but as soon as i touch bclk or bclk straps it boots like crap or doesnt post etc

Are you setting a manual or offset voltage? Also are you giving it more current capability?
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post #997 of 6499
Quote:
Originally Posted by SneakyBushNinja View Post

Quote:
Originally Posted by zerokool_3211 View Post

i cant seem to run my stable @ 5ghz even on my h100....have tried up to 1.47 volts @ 125 x 41 still no go...idk...

It takes me 1.48 to get stable at 5.0. I've found that a lot of my stability problems are due to my VCCSA not getting enough juice when I start pushing my ram to higher clocks.
Quote:
Originally Posted by I7guy View Post

i cant get anything stable past 4.3, i think either my board sucks or my cpu sucks.
ive tried everything lol but as soon as i touch bclk or bclk straps it boots like crap or doesnt post etc

Are you setting a manual or offset voltage? Also are you giving it more current capability?

I'm setting voltage manually, how do I give it more current capacity?

What's vccsa
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post #998 of 6499
Quote:
Originally Posted by I7guy View Post

I'm setting voltage manually, how do I give it more current capacity?
What's vccsa

It's in the digi+ options, I've had to set mine to 120% to get to 5.0. VCCSA is your memory controller.
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post #999 of 6499
^^Imo, if yer gonna change your limit, you might as well set it to 140%.

Quote:
Originally Posted by zerokool_3211 View Post

i cant seem to run my stable @ 5ghz even on my h100....have tried up to 1.47 volts @ 125 x 41 still no go...idk...

125x41 = 5.125 ghz man!

5ghz is a bit harder on your imc, so you'll need more vccsa volts. Btw, read the ROG MB guide. Btw, what are your temps?
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post #1000 of 6499
Quote:
Originally Posted by tsm106 View Post

^^Imo, if yer gonna change your limit, you might as well set it to 140%.
125x41 = 5.125 ghz man!
5ghz is a bit harder on your imc, so you'll need more vccsa volts. Btw, read the ROG MB guide. Btw, what are your temps?

5ghz is where my H100 totally becomes incapable. My temps climb above 90c on a linpack. I did some bench runs at 4.3 vs 4.75 with Crysis 2, I got 0.1fps higher on a single run with 4.75, that's what made my mind up to drop to 4.3 for my 24/7.

264

I've considered going for a per core setup, but it didn't work out within 15min of testing so I gave up on the idea.
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