Post your C3 Test Results! (new title)

[FlanK3r]

Titan: ok, i remain better for a sandwich :-D

[charged3800z24]

Sandwich.. yumm, now I am hungry again..

Here is a run I just did, nothing fancy, my RAM will not run and tighter timings. I have my eyes on the AMD OCZ modules on newegg.

4.4ghz with 1.48v and 2800 with 1.25v

[FlanK3r]

very cool charged!!!

btw to my chip, finally its no so tragedy as first look. My chip like lower voltages think, in progres 3950MHz with 1.44V stable. We will see later. My point is 4 GHz -hope tomorow.

[Daveburt714]

For some reason my chip doesn't seem to respond really well to cold.
I haven't gotten it extreme but I shivered though amibients of 16c and water temps down to 19c and it only gave me an extra 50Mhz.

Core temps didn't really seem to be a problem (45c under extended load).
The chip just doesn't seem to like voltages over 1.475....

I does pretty well though at ambients, and on water I got an extra 25mhz on the core and almost 300 on the IMC.
I'm pretty happy with the results but I can't seem to get 30 minutes Prime at 4.1, and taking the voltage over 1.5 causes more problems than it fixes. Guess it's not cold enough....

Here's what I'm using 24/7 stable with ambient water.
Not too shabby!

[charged3800z24]

Mine doesn't like voltage as much as it likes lots of cold. You will need to drop another 10*C to see the next jump I guessing. Still no bad results considering.

[Daveburt714]

Mine doesn't like voltage as much as it likes lots of cold. You will need to drop another 10*C to see the next jump I guessing. Still no bad results considering.

I'm sure your right Jay... When I get my own place I'll try using winter to my advantage. Right now it's kind of hard living in an apartment...

64NOMIS, if your watching this thread I have a few questions...
I know your a big dog at AMD and you do alot of testing yourself, so I'd like to get your opinion on a couple theories I have.
Sometimes they seem to conflict with what the gurus on here say, but they seem to work for me...

1) OCZ Tony says that the HTLink speed should be kept ~2000 reguardless of the IMC clock.
My experience is that keeping the IMC and HTLink close (or Linked) offers better performance.

2) I have a theory about ACC and using Wprime/P95 to tweak ACC values...
http://www.xtremesystems.org/forums/...d.php?t=232364

I'm still not sure about the usefullness of this, but I still tend to tweak using this option.
LOTS of respected folks have said this is useless... I still do it anyway!
Does ACC really offer any benefit when using C3, or am I barking up the wrong tree?

ACC has been a mystery since it's inception.... Any light you could shine on this would be appreciated!

L8r...... Dave

[neo mike]

Well im kinda late to the party, but i just got my 965 C3 and put my 955 be aside, i have to say for only having the chip installed for 30 mins, not a bad run, but i will keep pushing see how far i can go, hopefully i got a sweet chip

[FlanK3r]

AIR runs,ambients about 20 C. "bad" serie 0942 EPMW. Today il testing more (wprime 32, superpi, Cinebench, maybe 3D marks)

Quick run Cinebench (i had 4140 MHz screen, but i cant now find it )


superpí 1M (bad time, i must clean registry and RAM for better score )


And validation

[Raiderman]

For some reason my chip doesn't seem to respond really well to cold.
I haven't gotten it extreme but I shivered though amibients of 16c and water temps down to 19c and it only gave me an extra 50Mhz.

Core temps didn't really seem to be a problem (45c under extended load).
The chip just doesn't seem to like voltages over 1.475....

I does pretty well though at ambients, and on water I got an extra 25mhz on the core and almost 300 on the IMC.
I'm pretty happy with the results but I can't seem to get 30 minutes Prime at 4.1, and taking the voltage over 1.5 causes more problems than it fixes. Guess it's not cold enough....

Here's what I'm using 24/7 stable with ambient water.
Not too shabby!

Nice Dave! Damn near the same setting for 24/7!

[FlawleZ]

Great clocks Flank3r! You sure have A LOT installed on your computer lol.

[FlanK3r]

next benchies with AIR cooling, room temps was 20 C. Cinebench at x64 and a bit better score superpi with the same setings as yesterday. With 4326 MHz i was not lucky , 5 loops and crashed.

[Cele303]

These are my repeat benchmarks with DDR3 and Gigabyte 790FXT, last ones were with cheap Asrock and DDR2 while I was waiting for new memory... I was focusing more on testing ram frequency then best overall efficiency, but it looks good to me anyway...

Cooler is Big Typhoon... Next benchmarks with water cooling...

Screenshots are big so thumbnail instead of inserting image with textual main info...

SuperPi 1M - 15.594s ; CPU 4370MHz, NB 2990MHz, RAM 1840MHz 6-6-6-18 1T



SuperPi 32M - 16m 19s ; CPU 4218MHz, NB 2886MHz, RAM 1776MHz 6-6-6-18 1T



wprime 32M - 8.469s ; CPU 4292MHz, NB 3016MHz, RAM 1856MHz 6-6-6-18 1T



pifast - 24.73s ; CPU 4310MHz, NB 3029MHz, RAM 1864MHz 6-6-6-18 1T



Sandra cpu arithmetic - 53.88GIPS ; CPU 4122MHz, NB 2977MHz, RAM 1832MHz 6-6-6-18 1T

[dinos22]

hi Cele303 did you use Large System Cache for 32M SuperPi
it looks like you havent

[mngdew]

Are all the high overclocking results are on 32bit or 64bit Windows?

[charged3800z24]

Mine were mostly on win7 64

[eRazorzEDGE]

Just got mine today and so far, it's looking promising....



On Win7 x86, stock voltages, under phase @ -15°C idle.

Anyone know the actual CPU-NB stock voltage? 1.375v seems way too high to me.

[Daveburt714]

Are all the high overclocking results are on 32bit or 64bit Windows?

All my runs are done on Win7 64. I know they're not the most impressive, but I'm a stickler for stability, and all my shots are at least close to stable...

That being said, either my chip is getting burned in, or the TIM is starting to set a little better...

Here's a new result! Finally got >4.1Ghz with decent NB in CB:

[mongoled]

Hello peeps, old timer here

Just got my C3, its a 0944APMW

First question, havnt found answer on the internets.

What is the default CPU VDDC (otherwise known as CPU-NB-VID) as per AMD Overdrive for these CPU's?

The default on this chip is showing as 1.550v which is the maximum.

Is this correct?

On first look dont seem to be a good CPU, on default volts its not prime95 stable at 3.9Ghz. I get bluescreen reboots when priming with blend option, it reboot on test6 FFT length 1024mb without any of the cores failing.

Rig is the same as in sig except the CPU

Looking at other peeps results must say I am quite dissapointed, I know I have not dialed anything in, but was expecting to at least be prime stable at around 4Ghz with my cooling setup on default volts, settings etc

- EDIT -

Also blue screen reboots priming with small FFT's

[FlanK3r]

dave: u must go up to 17 000, watch at my post #136 ...Its simillar clock (only higher NB, but sometimes is in Cinebench better 2600 than 2800)

[wez]

What is the default CPU VDDC (otherwise known as CPU-NB-VID) as per AMD Overdrive for these CPU's?

The default on this chip is showing as 1.550v which is the maximum.

Is this correct?

1.55v sounds quite right for CPU VDDC, iirc my giga board run 1.5v as default.

However it shouldnt be the same as CPU-NB-VID, that would be the imc voltage afaik. (1.1v default on my c3)

[neo mike]

Well i cracked 4ghz pretty dam easy on this new C3 need to get a good cooler im only on stock cooler, love to see how far this chip will go

[FlanK3r]

As ussually, first better contact in wprime 32 M. Think, 4200-4240MHz ispossilble. (Aircooling Cooler Master Hyper 212)

[jpm804]

Well i cracked 4ghz pretty dam easy on this new C3 need to get a good cooler im only on stock cooler, love to see how far this chip will go

Nice to see that chip is treating you well Mike...

Wonder what it will do will better cooling....

[neo mike]

Well i will have to findout im thinking 4.5 , will findout this weekend. I think you sold me a Golden Chip

[eRazorzEDGE]

This chip is crazy, I love it. 4.8GHz just throwing up some voltage, with 3.0GHz on the NB