X4 955 Oc Help

[IGhzI]

What are your settings for 4.0

 

[Vic Vega]

...

 

[SickBeast]

You're definitely trolling. Google is your friend, there are forum posts from 2009 with people hitting 4.0GHz on C2 chips. Like I said, you personally were not successful so you are claiming 3.8GHz is the limit and it's not. It's plain to see you are extremely biased and dishonest, not worth conversing with.

So what's your voltage and what are your temps at 4.1ghz?

 

[SickBeast]

tincart is saying that 4ghz is not reasonable as well, Vic Vega. Is he trolling too?

Perhaps we should report your posts to the mods. I've had enough of you now.

 

[soccerballtux]

You're definitely trolling. Google is your friend, there are forum posts from 2009 with people hitting 4.0GHz on C2 chips. Like I said, you personally were not successful so you are claiming 3.8GHz is the limit and it's not. It's plain to see you are extremely biased and dishonest, not worth conversing with.

not on 64b windows.

 

[jacktesterson]

OP 4ghz is too much for a Phenom II. At 3.8ghz they hit a wall.

Can't agree with this.

Its done all the time. I've seen lots of them hit 4

Sent from my LG-P935 using Tapatalk 2

 

[IGhzI]

Can't agree with this.

Its done all the time. I've seen lots of them hit 4

Sent from my LG-P935 using Tapatalk 2

Second that, theres a guy on tomshardware bootable at 4.5 stable at 4.2 ands that with a 955

 

[SickBeast]

I'm not saying 3.8ghz is the limit; I'm saying that *most* Phenom IIs hit a wall at that speed. Just like *most* 2500k chips hit a wall at 4.5ghz. I can hit 5ghz with mine but the voltages and temps are stupid.

 

[Leyawiin]

Of course its absolutely possible to go beyond 3.8 Ghz with a Phenom II X4. Some chips are good samples and can do more than that (I've read of numerous cases of people getting a stable 4.1-4.3 on air). It seems for the average chip and hardware (case/cooling/motherboard/RAM) the upper end is around 3.8-4.0 Ghz. If a chip is capable to go beyond that it oftentimes is taking a lot more voltage to do so and putting out a lot more heat for a minimal performance gain.

I've got a crap X4 980 BE. The thing won't go above 4.0 Ghz and it takes 1.5v to do that. Luck of the draw. Now that the weather is getting warmer I just leave it at stock (3.7 Ghz) and bump the CPU/NB a little (200 Mhz). Can't really tell a difference in gaming and its a lot cooler.

 

[SlowSpyder]

I am solid in W7 64 @ 4030MHz. But when I try to get to 4.2, core five craps out during stress testing. I could push more voltage, but I'm already coming close to 60C during stress testing. No point in going for more, I doubt I'd notice a difference.

OP, just make sure you push the NB/L3 more so than the multiplier, there is plenty of performance to be had by upping those. 2.6GHz on the NB/L3 here.

 

[IGhzI]

I've heard those have alot of problems overclocking.. But yet again it is a 955 oc edition... almost bought one.

 

[tincart]

tincart is saying that 4ghz is not reasonable as well, Vic Vega. Is he trolling too?

Perhaps we should report your posts to the mods. I've had enough of you now.

I did not say anything like this. I prefer running @ 3.8 with less voltage since I don't really need an extra 200 mhz for anything that I do with the system. Running at 4Ghz is perfectly reasonable with my chip, but that does not preclude other choices from being equally reasonable.

 

[IGhzI]

So ive been doing alot of testing these last few days nb memory etc. With just using the multiplier to try hitting 4.0 it would crash with in a few seconds of running prime 95 at 1.5-1525. So I started playing with the fsb and lowering the mutiplier. I ended up getting 40 mins before it crashed this time using x16 fsb 243 im so close.

 

[soccerballtux]

that's strange. Usually it doesn't work that way.

 

[daveybrat]

So has anyone even asked the OP what kind of cooling he's using? Stock? Aftermarket air cooler? Water?

That would be nice to know

 

[IGhzI]

So has anyone even asked the OP what kind of cooling he's using? Stock? Aftermarket air cooler? Water?

That would be nice to know

Hyper 212 Evo

 

[Don Karnage]

OP 4ghz is too much for a Phenom II. At 3.8ghz they hit a wall.

C2's hit a wall at 3.7Ghz, C3's will go over 4.2 with ease aslong as youre on water

 

[soccerballtux]

using stock fsb, what's highest ghz you've gotten? 3.8?

 

[IGhzI]

using stock fsb, what's highest ghz you've gotten? 3.8?

Without test.. Bootable at 4.1 stable at 3.9 1.47. Ive got a test running now at (3.9 1.47) (cpu-nb 2300 1.24) (fsb 230 x17) (ht 2300) 1333 running at 15xx. Been stable for almost an hour on small fft.

 

[soccerballtux]

2.5-2.6ghz seems to be the sweet spot as far as voltage/performance goes IMO
As long as you can get it to 2.6ghz, then even if you had to leave the CPU clocks at 3.8ghz, I would still call that a success and that will still perform very nicely at video games and such.

 

[jay2nice000]

my 955 chip will hit 4.0 and stable but im watching movies or surfing the net but when it comes to gaming it will crash i keep it at 3.6 stable havent pushed 3.7 yet

 

[cmaMath13]

My 955 is running at 3853 MHz with 1.416 V using Coolermaster Hyper 212 Evo.

 

[jay2nice000]

My 955 is running at 3853 MHz with 1.416 V using Coolermaster Hyper 212 Evo.

did run run prime95? if so how long?

 

[lopri]

There are at least 3 different 955s/Denebs as far as I know.

C2
C3 pre-Thuban
C3 post-Thuban (rare)

C2's are obviously the worst, and their sweet spot is probably 3.6 GHz, although 3.8 GHz was not too difficult. These are the ones with the infamous 4.0 GHz ceiling under 64-bit Windows.

I had a brief experience of C3 pre-Thuban 955, and it did about 200 MHz better. (3.8~4.0 GHz) Same ~1.40 vCore. In general voltage isn't a limiting factor for these chips, but the temperature is. It helps a lot if you have some air flow around the VRMs/Mosfets.

I don't have a first-hand knowledge of post-Thuban 955s, but apparently AMD has made some changes to the silicon substrate and these behave much like Thubans, meaning these 955s are way better than previous ones. (Not talking about 960T which IS a Thuban) Don't quote me on this, though, it's a hearsay.

Which one you have is a luck of draw, especially for the different C3s. I think most of 955s in the market are pre-Thuban C3.

 

[jay2nice000]

There are at least 3 different 955s/Denebs as far as I know.

C2
C3 pre-Thuban
C3 post-Thuban (rare)

C2's are obviously the worst, and their sweet spot is probably 3.6 GHz, although 3.8 GHz was not too difficult. These are the ones with the infamous 4.0 GHz ceiling under 64-bit Windows.

I had a brief experience of C3 pre-Thuban 955, and it did about 200 MHz better. (3.8~4.0 GHz) Same ~1.40 vCore. In general voltage isn't a limiting factor for these chips, but the temperature is. It helps a lot if you have some air flow around the VRMs/Mosfets.

I don't have a first-hand knowledge of post-Thuban 955s, but apparently AMD has made some changes to the silicon substrate and these behave much like Thubans, meaning these 955s are way better than previous ones. (Not talking about 960T which IS a Thuban) Don't quote me on this, though, it's a hearsay.

Which one you have is a luck of draw, especially for the different C3s. I think most of 955s in the market are pre-Thuban C3.

How can you tell which chip you have?