Safe voltage for X2 4000+ Brisbane 24/7 longterm?

[DeepThought86]

Alright I've got an X2 4000+ running stable at 2726 MHz, Vcore=1.36v
Ram is stock 1.8v (A-Data 2GB single stick of PC 6400). Board is an ASUS M2A-VM.

I'm thinking of pushing it a little further, but was wondering what a safe voltage would be for LONG-TERM usage i.e. I have no interest in messing up the proc for a few more MHz since I want it to last for at least 4 years. Right now I can go to 2.8 with a little more voltage (~1.39) but it's not totally stable

[freeloader]

If long term is your plan, then I wouldn't go over 1.45 volts. Make sure you have good cooling and try to keep the processor below 55 deg C.

[DeepThought86]

If long term is your plan, then I wouldn't go over 1.45 volts. Make sure you have good cooling and try to keep the processor below 55 deg C.

It's running about 30 deg C idle, 55'ish at load. I'll try some tests and see how far I can go

[Data_]

It's running about 30 deg C idle, 55'ish at load. I'll try some tests and see how far I can go

What cooling do u have in use?

[i found nemo]

55c load and 1.36v's? try some as5 or a re-mount.

[DeepThought86]

55c load and 1.36v's? try some as5 or a re-mount.

Stock cooler *ahem* :D

[Jakalwarrior]

Is it brisbane? if so then the temp readins are questionable at best :/ unless you have a magical chip with temp readings (mine is randomish)

[DeepThought86]

Is it brisbane? if so then the temp readins are questionable at best :/ unless you have a magical chip with temp readings (mine is randomish)

Yup, Brisbane. The readings consistently go up when there's activity, but I guess the absolute value could be off.

I set the voltage to auto in the BIOS and went up to 2.8GHz with 1.41v, after that it wasn't stable. It wasn't much of an increase so I've decided to keep it at 1.36v/ 2.72GHz since that's totally stable and safe and the difference is imperceptible. Coming from a Sempron 3000 Socket A system, this thing is blazing fast anyway!

My main limitation in that old system was the mem slots - only 2, expensive DDR and max 1GB each. With the new board I can go upto 8GB and run a bunch of VM's. I just had to swap the mb + CPU + mem, kept the hdds, case etc. $220CDN including tax and delivery and it runs a dual monitor 1920x1200 and 1280x1024 setup out of the box. The equivalent Intel box would've cost about $100 more for the same performance since for some reason the G33 boards are all mATX w/ 2 mem slots and 4 was a requirement for me so I can get the 8GB. Intel - nice (desktop) microarchitecture, sad system design. The M2A-VM supports Phenom too

[DeepThought86]

Correction, the G31 boards only had 2 mem slots, the G33 had 4 but didn't support dual monitor output, and the single one was D-sub as well i.e. splash out another $50 for a vid card on top of the $30-$50 price diff of the motherboard. Now if I add another vid card in the M2A-VM I can have upto 4 monitors. For a multi-monitor freak like me that's a much better option :D

Not to mention that the E2xxx and E4xxx don't support hardware virtualization and can't run 64-bit guests in 32-bit host OS's.

[i found nemo]

so you gunna buy a nicer cooler? lol that might tempt you to o/c more tho ....

[tictac]

1.4V should be safe for 24/7 run. And make sure the temperature is lower than 50C :)

[SoulsCollective]

I ran my Opty at 1.5V for about two years with no ill effects. The problem came when the mobo crapped out and the voltage reg to the CPU died.

Short version, 1.45V should be fine for air-cooling, although I'd look hard at replacing that stock cooler with something better, if only to reduce the noise levels.

[JTeg86]

I ran my 3200+ Winchester @ 1.55V for about two years and never seen any problems. I would say anything at or below 1.5V would be fine. Of coarse lower is always better as long as its stable:up:

[roadie]

My Brisbane is at 1.45V 24/7. However, load temps are never over 50 degrees, as it's naked and cooled by a lapped TRUE.

[Mikael]

Not to hijack the thread, but I've got to ask something. I just bought a 4400+ Brisbane and it does the following seemingly stable (a few hours of Orthos/OCCT):

2.30GHz @ 1.01V
2.67GHz @ 1.10V
3.00GHz @ 1.23V

Is this good? It seems good for an AMD chip, but I have little experience with these CPUs (I've mainly used Core 2 machines the last year). I have not tried higher yet, since I currently don't have a board for the CPU. I'll overclock more as soon as I get one, though.

[Extelleron]

Not to hijack the thread, but I've got to ask something. I just bought a 4400+ Brisbane and it does the following seemingly stable (a few hours of Orthos/OCCT):

2.30GHz @ 1.01V
2.67GHz @ 1.10V
3.00GHz @ 1.23V

Is this good? It seems good for an AMD chip, but I have little experience with these CPUs (I've mainly used Core 2 machines the last year). I have not tried higher yet, since I currently don't have a board for the CPU. I'll overclock more as soon as I get one, though.

Definately good for an AMD 65nm chip. Is your 4400+ a G2 stepping chip? To check run CPU-Z and it's under "Revision", should say BH-G1 or BH-G2.

If it's a G2 where did you buy it from? I'm just wondering whether the low-end SKUs of AMD's Brisbane CPUs are still mostly G1 or if they have moved to G2.

[Mikael]

Definately good for an AMD 65nm chip. Is your 4400+ a G2 stepping chip? To check run CPU-Z and it's under "Revision", should say BH-G1 or BH-G2.
It's a G2. Here's a pic of it:

http://www.etek.chalmers.se/~brunnis/4400g2.jpg


If it's a G2 where did you buy it from? I'm just wondering whether the low-end SKUs of AMD's Brisbane CPUs are still mostly G1 or if they have moved to G2.
It's bought in a store in Gothenburg (Sweden) called Inet. Just check the box number of the part, if it's G2 the name should end with "DOBOX". The G1 had box numbers ending with DDBOX. I think the G2 is more common here at the moment.

[Spectrobozo]

my g1 brisbane is running at 1.25v 2600mhz, I tried 1.30 (max increment from my poor asrock) 2700mhz and It gets error on prime after 10 minutes, I was thinking, make a pinmod to 1.45v, and see what happens!? maybe 2800MHz+!? but with coolerbox, It's any possible to get a long life!? or even to run stable with 1.45v (or a little less like 1.4v, 1.37v)!? for now, the reading from the core is not acurrate, like any brisbane, but everest give me a reading of 54ºC in full load for the processor... I know, would be interesting to have a better cooling solution, but this is a really low end cheap PC and coolers are expensive here, the cooler box makes more sense for that, and I'm trying just to increase a bit the performance without spending more money on this...

[SocketMan]

Find a good balance beetwen the cpu and ram some where near 3ghz which needs near stock voltage (long life)
By good balance I mean make sure you set you ram to run at it's highest rate,
like so that DDR800 is not running at 700 with some of the cpu (half) dividers.
Added** my G2
;)

[Andy_007]

My X2 Brisbane 4200+ can do 3.2ghz fully stable at 1.4V, i have booted at 3.6ghz but havent being able to get stable yet

http://valid.x86-secret.com/show_oc.php?id=346820

Writing on the chip
ADO4200IAA5D0
CAABG 0805EAE

Cooled with a Arctic Freezer Pro 64, Max load temps about 47 degrees

[DeepThought86]

Well I got an OCZ Vendetta, upped volts to 1.4 and Nb to 1.3 (+0.1) and it's running at 2.8 OCCT stable and IntelBurn test as well. Until I upped the NB volts I couldn't get it stable at 2.8 (actually it would reboot very quickly). Temps are 28 idle, 50 maxed. Interestingly, I got a T2390 laptop and it looks like that has a 20% better IPC (though lower clock). I don't know if my 4-year plan for this rig will hold :)

Been considering an E7200 or Deneb lately. It's an addiction, I know :D
Looks like the K10 is roughly equivalent to C2D. So a cheap 45nm AMD X3 or X4 would be the cheapest upgrade. That is, if AM2 mobos are supported (not AM2+)