AMD cpu that will do 4GHz on 64 bit?

[P.A.D>]

Sorry people I've been out of the OC thing for a little while now and would like some recommendations for a AM3 cpu that will do this If any?

I've got the 955 oc'd to 3.8 and have had It at 3.9-4. While 3.9 Is mostly stable 4 Is a no go for stability. I'm using the 790FX GD 70 with 4 gigs.

I've heard the new chips will do this but I'd like to here from you guys.

[Loser777]

You should probably look at the last few pages of this thread:
http://www.xtremesystems.org/forums/...d.php?t=213248

There are some that have done 4GHz Prime Stable

[zanzabar]

my 1090 will, most of the thulbans do 4.1-4.2

[TheBlueChanell]

Every X2/X4 C3 chip I've worked with has been good for 4ghz. My 1090t went to 4.2ghz easy and once that rigs back-up I'm gonna push it further.

[[XC] Oj101]

TBC, isn't your CPU-NB a bit high for 24/7?

[Royalk]

My 955/1055T/840T's CPU-NB voltage are all on 1.35v, for almost one year, so it should be fine.

[zanzabar]

the default on my 1090 is 1.4V so i dont think that 1.35 will kill it

[Leeghoofd]

the default on my 1090 is 1.4V so i dont think that 1.35 will kill it

My CPU NB is 1.2 on the CH IV, think your MSI is the issue... runs happily at 2750 at 1.3

[zanzabar]

My CPU NB is 1.2 on the CH IV, think your MSI is the issue... runs happily at 2750 at 1.3

im on an aus m4a89td pro now, i should update the sig, both run 1.4 default

[[XC] Oj101]

Yeah, I'm at 3GHz 1.3v and with the same board (790FX-GD70) and a 1055T I'm getting 1.2v as the default

I was under the impression that 1.35v was about the safe limit.

[FlanK3r]

hmmm, maybe for Thubans are values a bit diferent.

[[XC] Oj101]

Yeah, I'm talking about Thuban. I thought 1.35v for Thuban and 1.4/1.45v for Deneb?

[FlanK3r]

I think +- yes for 24/7 with aircooling (CPU-NB voltage) . For benchmarking a bit higher (1.4V Thuban/1.5V Deneb)

[BeepBeep2]

You could just have a bad CPU, my 965 did 4 Ghz on water with 1.55v, wouldn't hit 4 Ghz on air at all. Stopped at 3.85...and this is 32-bit.

[charged3800z24]

On water it isn't to hard to do with most of the Thubans. On Air, if good enough, this is also possiable. I've seen some interesting results lately.

[ericFX1984]

my 965 C3 does 4.0Hz stable on air and the same on water, on my chiller I got it to 4.5GHz

[stangracin3]

i run 1.3875 on my NB and i load at 48-50 C and that is with ty thermal paste

[[XC] Oj101]

The voltage limit isn't about temperature... I've pushed 1.5v (CPU-NB instead of CPU) through it by accident without seeing a big temperature increase.

[stangracin3]

The voltage limit isn't about temperature... I've pushed 1.5v (CPU-NB instead of CPU) through it by accident without seeing a big temperature increase.

thats weird cause you should see a fairly large difference

[demonkevy666]

thats weird cause you should see a fairly large difference

yeah I got 6C hotter on idle and load with my NB up at 1.5 volts (3.2ghz) ?
:/

[BeepBeep2]

Yeah, I remember setting NB to like .975v @ 1600 for CPU-Z valids because of heat...

[TheBlueChanell]

TBC, isn't your CPU-NB a bit high for 24/7?

It's been a dream so far, I would say that my memory is running a bit low for 24/7.

[PatRaceTin]

You may need some good cooling to stabilize deneb @ 4.00+

[[XC] Oj101]

yeah I got 6C hotter on idle and load with my NB up at 1.5 volts (3.2ghz) ?
:/

6'c isn't a big difference, and it sure isn't safe for 24/7 even though it's relatively cool.