780G or 790GX for PHII?

[perdomot]

My current 780G mobo supports the new cpus but lacks the 790GX's southbridge which has ACC for better OCing. I've read that the PHII is a good OCer but how much more would a 790GX mobo allow me to OC the new cpus? The average difference on PHI cpus was about 300mhz so I'm wondering if that will apply to PHII cpus.

 

[Pelu]

no clue dude... I have a 790GX and was thinking on a phenom II too... I hear they are better than Phenom One... but not so nasty like i7... at least they dont cost 1000 bucks like the i7 LOL!!!!

 

[SunnyD]

Anything with the SB750 on it will be the best bet. Most if not all 790GX come with the SB750. The other thing you have to take into account is whether your board will handle the 125w CPU's without fussing. The big deal was with the 145w cpus, but hey... might as well consider it.

 

[BLaber]

PII's have the ACC part built in the processor as compared to Phenom I , so you don't need ACC to overclock PII as much it was needed with Phenom I.

I would suggest you try overclocking PII on your 780G motherboard , depending on your overclocking skills if you are able to run your PHII stably at 3.7Ghz , then you are doing good as that's the average overclock right now with PII.AM3 parts with newer C3 stepping may change that.

 

[heyheybooboo]

The issue with SBs prior to 750 was one of PLL 'phase' timing when overclocking - the combination of ACC (Advanced Clock Calibration) and SB750 reduces the 'skew' and better keeps timing in phase as clocks go higher.

Earlier Phenoms have the 'pins' - sb750 and BIOS updates take advantage of them. Higher overclocks with Phenom IIs will certainly benefit from sb750 and ACC but I would think the architectural changes made from 65nm --> 45nm are more significant in the big scheme of things ---- simply because you are starting at a higher clock rate with PhIIs and better OCs at stock volts are seen.

 

[mb103051]

780g and 790fx are the same chip except the graphics is clocked at 500mhz on the 780 and 700 on the 790gx...if you dont mind o/clocking thru windows then the 750 sb would probubly be better..
me i only clock thru bios so the 780g is fine ..if you already have a 780g board put some heatsinks on the mosfets and go to town..from what ive experienced and seen there isnt a whole lot of difference between the two...even my 600sb keeps right up...if your looking for a board as an upgrade then the 750 sb 790gx boards or the 790fx board with the 750sb but they are expensive...
keep in mind to that the 890 chipset is coming out later this year to...
look at the asrock 790gx board at newegg as its only 104 bucks and its a fine board for low bucks...o/clocks like mad...just put some heatsinks on the mosfets though...

 

[AstroManLuca]

Problem with ASRock is apparently their warranty service is absolute shite. Reviewers on NewEgg commented that they only have a true warranty for the first 30 days (in which case you'd just send it back to NewEgg anyway), after which they charge $35 + shipping to get your board serviced. Sounds like BS to me especially since no online retailer is going to provide RMA service past 30 days.

 

[perdomot]

Originally posted by: BLaber
PII's have the ACC part built in the processor as compared to Phenom I , so you don't need ACC to overclock PII as much it was needed with Phenom I.

I would suggest you try overclocking PII on your 780G motherboard , depending on your overclocking skills if you are able to run your PHII stably at 3.7Ghz , then you are doing good as that's the average overclock right now with PII.AM3 parts with newer C3 stepping may change that.

Didn't know about the ACC being in the new PHII chips. Might try it with the X3 chips coming out soon if there is a new bios update to cover them.