**Official DFI LanParty UT 790FX-M2R Review/Overclock/Guide Thread**

[Rammsteiner]

Well wtf,

This is starting to make zero sense. I passed 1.275V. At that point I decided to go fro 14 multi. But whatever I tried, even adding Volts, it was everything but stable. Played with HT multi, NB multi, nothing.

So I tried previous settings which ran 9h+ and it randomly restarts or BSOD's... The restart makes no sense at all since Ive the auto reset OFF for when a BSOD occures. Also have the shutdown thing in BIOS off at xxC.

I just noticed though I ran this time with unganged where as, IIRC, I previously ran with ganged. Maybe Im an uber n00b and never caught that, but does ganged vs unganged has any effect on stability? At DDR800 mode it is.

Im really considering, how annoying it's starting to get, to throw it all out and plug everything on my DQ6 and see how that goes because this makes no sense.

[KTE]

This is starting to make zero sense. I passed 1.275V. At that point I decided to go fro 14 multi. But whatever I tried, even adding Volts, it was everything but stable. Played with HT multi, NB multi, nothing.

Ahhh you have just bit the lions tail Sir (Miss? )

You see, Dear Mr Rammsteiner (Mrs? ), everything which doesn't make sense makes sense to Phenom, quite incredible don't you think

I just noticed though I ran this time with unganged where as, IIRC, I previously ran with ganged. Maybe Im an uber n00b and never caught that, but does ganged vs unganged has any effect on stability?

Yes

[Rammsteiner]

Ahhh you have just bit the lions tail Sir (Miss? )

You see, Dear Mr Rammsteiner (Mrs? ), everything which doesn't make sense makes sense to Phenom, quite incredible don't you think

Yes

Ugh, I dont care if things make sense to Phenom, I WANT IT TO MAKE SENSE TO ME.

How does ganged vs unganged effect stability for DDR800 mode. Is this a general rule or just trial and error?

Oese, you disabled ODT pin fine delay? So what did it really gave you by disabling it? Might try it out as well although I use Micron IC's and that option looks like it stabilizes signals... And Micron doesnt like unstable signals lol.

Justapost, Ill try it when I build everything over on the DFI AGAIN. At least I know it's more likely Ive a crap CPU stepping than that my DFI was broken.

64 bit vs 32 bit OS's... Actually, I dont think it should matter in the end. And besides that, didnt Tony hit 3+Ghz on his with Vista 64? Im nowhere near that.

Ill wait a few weeks till after exams and maybe order a new 9850BE, or if it's close to release a 45nm one. I know at some point it's all stable at 2.7Ghz, just got to mess around again and note even more settings as ganged/unganged.

[justapost]

go get PCmark Vantage, run the full test 90mins or so...passes that its stable

Thank you for the tip tony but in do not use Vista here.

Great testing there, thanks.

That's the sort of testing which is very interesting and helpfully conclusive.

Thanks Tye,
My main goal is to find out if the nb voltage is really total independant from cpu speed and voltage.
Currently it looks like I require higher voltages with 70°C cpu temps than with 60°C. Also the nb starts to fuel the chip at 2.4GHz/1.4V, i get ~3°-4°C higher temps.

My 740G just booted 9850, randomly -> gotta ask MGR if he'll let a girfriend deliver the system to work now so I can test it at break

Nice, good to see the chip still works. With no chef looking over my shoulder, it's hard to cope with myself here, so may things waiting for reinvestigation.

Well wtf,

This is starting to make zero sense. I passed 1.275V. At that point I decided to go fro 14 multi. But whatever I tried, even adding Volts, it was everything but stable. Played with HT multi, NB multi, nothing.

So I tried previous settings which ran 9h+ and it randomly restarts or BSOD's... The restart makes no sense at all since Ive the auto reset OFF for when a BSOD occures. Also have the shutdown thing in BIOS off at xxC.

I just noticed though I ran this time with unganged where as, IIRC, I previously ran with ganged. Maybe Im an uber n00b and never caught that, but does ganged vs unganged has any effect on stability? At DDR800 mode it is.

Im really considering, how annoying it's starting to get, to throw it all out and plug everything on my DQ6 and see how that goes because this makes no sense.

I'd drop the cpu and nb multi and inspect how far ref HT goes. Then id try to reach 2.8GHz with an 13 or 13,5 cpu multi and an 9x nb multi via small ref HT increasements.

[Tony]

Thank you for the tip tony but in do not use Vista here.

Thanks Tye,
My main goal is to find out if the nb voltage is really total independant from cpu speed and voltage.
Currently it looks like I require higher voltages with 70°C cpu temps than with 60°C. Also the nb starts to fuel the chip at 2.4GHz/1.4V, i get ~3°-4°C higher temps.

Nice, good to see the chip still works. With no chef looking over my shoulder, it's hard to cope with myself here, so may things waiting for reinvestigation.


I'd drop the cpu and nb multi and inspect how far ref HT goes. Then id try to reach 2.8GHz with an 13 or 13,5 cpu multi and an 9x nb multi via small ref HT increasements.

I thought it ran on XP also, there is a 32bit version as well as 64bit

[unkn0wnhacka]

man... i have tried to get my htt above 220 for at least 1-2 weeks... now i cannot even get it above 206 without it crashing lol..

how can i get my multi up higher?

why does stupid AOD reset my vcore everytime i open it? zzzz

I have kinda cheap ram but its still patriot... that wouldnt really limit me under 220 HTT would it?

I have higher vcore for testing purposes... im not worried about my temps :P

[sea_man]

i have a "X files" here....

Whit Vista 32b i can OC up to 2.7 ( tested whit 2 hours of Prime and Ortos)
but whit Vista X64 i can`t go over 2.5 ...
There are any trouble with X64 and OC in this DFI board ??

Thanks for you replies..

[aGeoM]

i have a "X files" here....

Whit Vista 32b i can OC up to 2.7 ( tested whit 2 hours of Prime and Ortos)
but whit Vista X64 i can`t go over 2.5 ...
There are any trouble with X64 and OC in this DFI board ??

Thanks for you replies..

Had none differences between Vista x86/x64 and Server 2008 x64, however I could go up to 2.9 with XP x86 but was not stable at all

Didn't nothing special, installed Vista x64 at HTT=250, updates, reboot, Catalyst drivers, reboot, all drivers left, reboot, up HTT=255,

Other's have reported problems with Vista x64

[Brother Esau]

i have a "X files" here....

Whit Vista 32b i can OC up to 2.7 ( tested whit 2 hours of Prime and Ortos)
but whit Vista X64 i can`t go over 2.5 ...
There are any trouble with X64 and OC in this DFI board ??

Thanks for you replies..

There are many documented cases on this forum with Phenom not O.C well on both 64 Bit XP & Vista its not isolated to the D.F.I 790FX

[AlabamaCajun]

There are many documented cases on this forum with Phenom not O.C well on both 64 Bit XP & Vista its not isolated to the D.F.I 790FX

I've shimmied up the wrong tree.

continued in the new thread.

[sea_man]

There are many documented cases on this forum with Phenom not O.C well on both 64 Bit XP & Vista its not isolated to the D.F.I 790FX

Very sad this information,i have 8g of ram and i need x64 to work.
i will try whit Ubuntux64.