Post your C3 Test Results! (new title)

[crazydiamond]

wtffff!! i need 1.53v + on my vcore for 4100mhz! what a gem, i need a 955

[Daveburt714]

wtffff!! i need 1.53v + on my vcore for 4100mhz! what a gem, i need a 955

That Sux CrazyD.... Sounds like you may really have a weak chip..

That being said, take a step back for a minute bro.
I've been playing with my C3 for a few months now and it doesn't like anything over 1.5v on the cores (1.488 with droop via CPU-Z).
And the NB/IMC doesn't like anything over 1.3v (my IMC is pretty weak too)!

I know you've been playin with Phenoms for a long time too man, you know how they are!
C3's are really different beasts than the early versions. In fact this new stepping has been giving me fits too!

In the end, if you take your time, test each clock with minimal voltages and then blend all your results together, the C3's absolutly ROCK!

Lower your voltages to all stock, and test each thing by itself until voltage doesn't help, then use that knowledge to dial your chip in...

Even with my weak IMC (~2700 max) the C3 smokes any C2 I ever had and makes the old Phenom 1's look pathetic...

The more you play with it, the more you'll realize how sweet it is!

Good luck Man!

[crazydiamond]

i think my post was interpreted the wrong way dont get me wrong i think i got a good chip and 4100mhz w/ any voltage prime stable on air is great, but i was just comparing to his screenshot, 1.43v for 4.1ghz is amazing! if this is a sign for whats to come we are in good shape we know they usually scale to around 1.5v on air no problem so who knows, maybe 4200mhz will be around the corner if 4100mhz is stable w/ only 1.43v

all this assuming his cpuz is reading out correct vcore

edit: and nvspec, how much cpu-nb volts do they need for 2800mhz?

[FlanK3r]

NVC: omg!!!!Whau, try the same chip with 1.55V

[Lastviking]

This is my second 955. It's also a 0945MPMW. This is just a megahalem with a 110cfm panaflo, and a hr05 on the NB for the gd-70.

What real vcore is that? , what room temp do you have? , 45c sound like great temp...i think i need a window to make it that low.

[NCspecV81]

That is the real vcore. my tests were ambient air cooling with a megahalem and a 110cfm panaflo. I could take it outside but its TOO cold out there.

whoever asked. I'm using 1.45v on the CPU-NB.

[Lastviking]

That is the real vcore. my tests were ambient air cooling with a megahalem and a 110cfm panaflo. I could take it outside but its TOO cold out there.

whoever asked. I'm using 1.45v on the CPU-NB.

Then you found a great one! , but how high is your indoor temp?

[NCspecV81]

I dunno. If I had to guess.. probably right around 18-20c. The cpu is idling @ 33c right now. I actually have 2 955's that can match each other. I got them from the 'egg if anyone wonders. 0945MPMW.

[mongoled]

That is the real vcore. my tests were ambient air cooling with a megahalem and a 110cfm panaflo. I could take it outside but its TOO cold out there.

whoever asked. I'm using 1.45v on the CPU-NB.

Hello, when you say that it is 'real vcore' are you measuring the vcore with a multimeter at one of the chokes?

The reason I ask, is because software reading can be very misleading.

i.e. My C3 is prime95 stablewith 1.52v (CPU-Z), the other day I switched to another motherboard, exact same model and bios, and now the CPU is prime95 stable with 1.49v.

The default voltage of the CPU on both motherboards also varied by 0.03v

i.e.

motherboard 1 default voltage = 1.40v (CPU-Z)
motherboard 2 default voltage = 1.37v (CPU-Z)

I need to get round to measuring the real vcore....

[Asmola]

I got new mems, G.Skill D9GTR's and looks like CPU is oc'n little higher with these.
26c ambient temps and cooled by Noctua NH-D14.

[NCspecV81]

Hello, when you say that it is 'real vcore' are you measuring the vcore with a multimeter at one of the chokes?

The reason I ask, is because software reading can be very misleading.

i.e. My C3 is prime95 stablewith 1.52v (CPU-Z), the other day I switched to another motherboard, exact same model and bios, and now the CPU is prime95 stable with 1.49v.

The default voltage of the CPU on both motherboards also varied by 0.03v

i.e.

motherboard 1 default voltage = 1.40v (CPU-Z)
motherboard 2 default voltage = 1.37v (CPU-Z)

I need to get round to measuring the real vcore....

no. I didn't measure with a dmm. I doubt I do that b/c it doesn't really matter that much to me to go poking around with my multimeter.

What I was saying was that cpu-z reads what my bios reads pretty much.

[Zeus]

Asmola, nice overclock on..eh...everything! Especially considering your 26ºC ambient. (turn that heater down man, 26ºC is tropical, it's winter! )

Shame D9GTR takes so much volts to overclock that high, i bet you were close to 2.15-2.2V, no?

[Asmola]

Mem's need only 2 volts (set on bios) for those timings/speed, but i must say those are almost max oc's for everything with these ambients.
Max nb clock that passes 06mark is 2977MHz and mem's 1848MHz and that's max cpu oc. So almost max for everything!
But i will try pushing this further.. and perhaps try lowering my ambients!

[Mavhenz]

Hi there, I got a watercooling setup and I want to know something:

Is the 955 125w better or the 965 better for % gain?
I'm at 3,8 ghz with a 720 be for the moment, and I want to beat the 4 ghz clock (It's mental!)


Or it is the same?
Or it always depends...

(I you could respond quickly that will be really appreciated!)

[vinister]

this is my 24/7 stable clock. I hit a wall if I push too much further, needs 1.5V+ to go any further, but my temps are already at my comfortable limit. So here it stays!

[memel]

C3 965 @4,02Ghz 1,41V AC / G.skill PK 1066 @ 1130Mhz 1,95V / 9800GT @800/2000/2200 / NB 2756Mhz Cpu-nb 1,15V / Biostar TA785GE

[mongoled]

no. I didn't measure with a dmm. I doubt I do that b/c it doesn't really matter that much to me to go poking around with my multimeter.

What I was saying was that cpu-z reads what my bios reads pretty much.

Thanks for explaining, you have a good CPU, just to know if its great, then real vcore would be good to know.

We can only know tht by using a multimeter, but as you said, the rig is fine for all intents and purposes so no need to go poking arnd and

[I.nfraR.ed]

955 C3 | batch 0952CPMW | 4GHz @ 1.5V


965 C3 | batch 0952GPMW | 4GHz @ 1.5375V


This one isn't capable of doing 4.1GHz stable and has weak CPU-NB.
Both of the CPU's are on water, but still it seems that the first 965, which I'm using is the best from the three. However this 955 could beat it, but I'll check that some other time.
I'll also try with different board (UD5P) very soon.

[Oliverda]

955 C3 | batch 0952CPMW | 4GHz @ 1.5V


965 C3 | batch 0952GPMW | 4GHz @ 1.5375V


This one isn't capable of doing 4.1GHz stable and has weak CPU-NB.
Both of the CPU's are on water, but still it seems that the first 965, which I'm using is the best from the three. However this 955 could beat it, but I'll check that some other time.
I'll also try with different board (UD5P) very soon.

That 0952 series doesn't look so good...

[FlanK3r]

C3 965 @4,02Ghz 1,41V AC / G.skill PK 1066 @ 1130Mhz 1,95V / 9800GT @800/2000/2200 / NB 2756Mhz Cpu-nb 1,15V / Biostar TA785GE

watter, air? And batch?

[memel]

watter, air? And batch?

AIR AC Auras
0952CPMW

[I.nfraR.ed]

That 0952 series doesn't look so good...

Could be my board holding me down. I will try today with Gigabyte MA790FX-UD5P, but I can put on water only the CPU, not the NB, because of the heat-pipe cooling system.
The difference may come from the phase count and actually I hope so

@memel Seems better than mine 955 (0952CPMW), but is it fully stable?

[memel]

0952CPMW@ X4 3,9Ghz 1,41V Stable (@4,2Ghz X2 1,488V Stable)
0945APMW@ X4 3,8Ghz 1,42v Stable
0945DPAW@ ???? I test

[Asmola]

Bandwidth is starting to be on target!


Maxxmem show's worse latency's than Evererest, download Maxxmem and test your self:
http://www.maxxpi.net/pages/download...---preview.php

[FlanK3r]

Nice Asmola: 15 000 copy!

memel:its look very good, 0952Cxxx is promising. Strange its, my 0942 is with 1.4V stable at 3900 MHz, but for 4GHz i need 1.52V :-/