Phenom II X3-720BE List Capable to running 4 cores or not

**hey** · 03-07-2009, 12:35 PM

here we tried some cpus with giga 790gp-ds4h

http://www.donanimhaber.com/Video.aspx?Id=458

results are attached!

**mngdew** · 03-07-2009, 12:39 PM

I'm having an issue with my unlocked 720BE on GA-MA790GP-UD4H.
It's been Prime95-64bit and OCCT stable at 3.6ghz (15x240), but I'm getting sound corruption under Vista 32 and 64 with both SB X-Fi and Realtek HD. With SB X-Fi, I don't hear sound 95% of time, but with Realtek, I do have sound, but randomly corrupted. Also, display seemed slightly corrupted under Vista 32. I have the latest Forceware driver install from nVidia.
I've tried all sorts of settings in the Bios, running FSB at defalut 200mhz, lowering NB and HT to default, and increasing voltage to CPU NB vid, SB and NB voltage.
If I don't unlock the 4th core, then everything is fine. Any thoughts?

**overclockedamd** · 03-07-2009, 07:58 PM

AMD PhenomII 720BE
Asus M4A79T Deluxe
Modded bios found here

after about 2 hours with it and maybe 15 mins of tweaks..most spent in prime95.

*edit* 0904 BPAW

**fanello** · 03-08-2009, 04:32 AM

Originally Posted by mngdew

I'm having an issue with my unlocked 720BE on GA-MA790GP-UD4H.
It's been Prime95-64bit and OCCT stable at 3.6ghz (15x240), but I'm getting sound corruption under Vista 32 and 64 with both SB X-Fi and Realtek HD. With SB X-Fi, I don't hear sound 95% of time, but with Realtek, I do have sound, but randomly corrupted. Also, display seemed slightly corrupted under Vista 32. I have the latest Forceware driver install from nVidia.
I've tried all sorts of settings in the Bios, running FSB at defalut 200mhz, lowering NB and HT to default, and increasing voltage to CPU NB vid, SB and NB voltage.
If I don't unlock the 4th core, then everything is fine. Any thoughts?

I think your fourth core is producing strang things. If all works fine with three cores, it must be the fourth core.

@ overclockedamd

Have you also tested prime Large FFTs? Many X3 @ x4 work fine with small FFTs, but they don't succed in Large FFTs.

**Muraretu** · 03-08-2009, 05:12 AM

So, after i activated the core 4, I was very happy, I made some money economy. Now require to processor to be stable in 3.6 GHz would be too much. Looks good sense to use in 3.4 GHz with default voltage+0.005V.

**ISS** · 03-08-2009, 05:21 PM

I have activated the 4th core using DFI JR 790GX board. The only issue is that lastest official BIOS will not work, have to flash to lastest beta BIOS to get the 4th core up.

Running 3.4GHz at 1.35V.

**ah_khoo** · 03-08-2009, 07:03 PM

Originally Posted by ISS

I have activated the 4th core using DFI JR 790GX board. The only issue is that lastest official BIOS will not work, have to flash to lastest beta BIOS to get the 4th core up.

Running 3.4GHz at 1.35V.

is it prime stable mate?

**_hiVe** · 03-08-2009, 10:58 PM

Sorry for the offtop. but I can't seem to figure out a way to activate the 4th core on my DKA790GX mobo >.<
Suggestions anyone? I've spent a great deal of time searching arround the web, no luck.

My CPU's batch is 0851 FPAW.
Otherwise seems to be a nice clocker, just not with the boxed cooler eehh.

**simone18** · 03-09-2009, 04:53 AM

the dfi boards seem to be good @unlock and clock. still waiting for results to decide what to do :p

**fanello** · 03-09-2009, 08:01 AM

Originally Posted by _hiVe

Sorry for the offtop. but I can't seem to figure out a way to activate the 4th core on my DKA790GX mobo >.<
Suggestions anyone? I've spent a great deal of time searching arround the web, no luck.

My CPU's batch is 0851 FPAW.
Otherwise seems to be a nice clocker, just not with the boxed cooler eehh.

It is imposible to unlock the fourth core with an msi board

**largon** · 03-09-2009, 09:25 PM

Wheeee!
Imagonnagetmy720BEtoday!

edit:

CACZC AC 0851FPBW

**mercindustries** · 03-10-2009, 02:26 AM

0904BPAW on M4A78T-E, sometimes it will post with 4th core, most of the times it will not, so far it's only appeared twice to me and unable to prime

**keysplayr** · 03-10-2009, 02:48 AM

0904DPCW,
GIGABYTE GA-MA790GP-UD4H rev. 1.0 BIOS ver. F1
3.2Ghz 1.344v, stock volts -w- stock aluminum cooler. (Not much of an o/c for this site, I know

It works whether I install Vista with the 4th core unlocked, or unlock it after. I hear some folks cannot get the 4th core to appear in Task Manager even though it shows in BIOS or CPUz. Works without issues at full core speed. Some folks report unstable even running 4th core under 1GHz. I have run ORTHOS for six hours and Prime95 for six hours without errors at stock 2.8GHz (haven't run it at current o/c yet).
Umm.. lessee. I have run a few benches: Cinebench R10 and POVRay. Benchmarks are in line with Anandtechs PhenomII X4 920 at stock speeds. So, I guess I'm good to go with this little guy!!
Some pics below: I'm using Vista32. Vista 64 (which I do not have) shows better results with Cinebench R10.

NOTE: I haven't yet found an app that accurately monitors the core temps. I've tried the following:
CoreTemp
Everest
HWMonitor
AMD CPU Info/PwrMon

Anyone found something that works? -Thanks.

**nirianto** · 03-10-2009, 04:57 AM

0851FPAW with jetway HA07-Ultra -> no 4th core

**_hiVe** · 03-10-2009, 06:46 AM

Originally Posted by nirianto

0851FPAW with jetway HA07-Ultra -> no 4th core

Could you tell us more? Your input whether its the mobo or the CPU batch would be appreciated.

Thanks.

**largon** · 03-10-2009, 06:55 AM

X3 720BE
CACZC AC 0851FPBW
DFI JR 790GX-M2RS

Unlocked to 4 cores after flashing to 2-25beta.
1+ hour prime stable at stock, and going strong.

Click image for larger version.

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**ISS** · 03-10-2009, 09:39 PM

Originally Posted by ah_khoo

is it prime stable mate?

Sorry, I don't run Prime. I use OCCT's Intelburntest instead. Cause I have face issues in the pass where the comp is prime stable but crashes in games.

**ah_khoo** · 03-10-2009, 10:46 PM

what kinda test you ran before? imo if you pass blendtest, then basically you'll have no problem w/ anything. i mite be wrong thou.

**ISS** · 03-11-2009, 12:34 AM

Originally Posted by ah_khoo

what kinda test you ran before? imo if you pass blendtest, then basically you'll have no problem w/ anything. i mite be wrong thou.

Nope, not really. Try running both small and large test as the same time. Its even harder to pass compared to blend.

But I realise Prime does not stress CPU as hard as AMD's own testing utility (it test Integers and check registers as well) but Prime doesn't.

Check out Intel Burn Test, read that Intel use it to test their own CPU and it stresses CPU even more than Prime. Now OCCT includes this test in their software and you no longer need to run from command prompt.

**mngdew** · 03-11-2009, 08:58 AM

It seems the latest 720's are finally locked up. I've tried four 904EPMW with 0044, 0108, 0234, and 0348. I was able to unlock two of them, but BSOD when starting Windows. Two couldn't be unlock at all (Bios keeps resetting to default).

p.s. all on M4A79 with modded bios.

**charged3800z24** · 03-11-2009, 10:05 AM

here is 3.8ghz 720BE (CACZC AC 0904DPMW) 4cores wPrime 32M & 1024M on GA-MA790FXT-UD5P AM3 setup.

**largon** · 03-11-2009, 10:23 AM

charged3800z24,
Does it run OCCT 1h CPU tests?
What NB freq/volt?

**charged3800z24** · 03-11-2009, 10:33 AM

Originally Posted by largon

charged3800z24,
Does it run OCCT 1h CPU tests?
What NB freq/volt?

I haven't ran OCCT yet, but NB is completely stock. I will play with it later.

**Mad-Marty** · 03-12-2009, 05:03 AM

Phenom II x3 720 0904EPMW works with 4 cores (prime-checked only 10 minutes by now).

The mb has problems finding my 8800 gt @ POST with ACC enabled.
Works with integrated graphics without problems.

Details here:
http://www.xtremesystems.org/forums/...d.php?t=220802

**iandh** · 03-12-2009, 08:04 AM

Mine is 0904CPMW, 1hr OCCT stable at stock w/4 cores

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