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

[Rammsteiner]

Grrr,

things are pissing me off. AFAIK my RAM is all good. As soon as I select 5-5-5-15 settings, 8ns and 2T 2.2Vdimm (they require 2.1Vdimm) at 267Mhz my HDD corrupts... wtf.

So that's a no go already. Not that I care because 267Mhz is a no go anyway, It's either 293Mhz or 251Mhz.

Anyway, 4-4-4-12 ~4ns (maybe 5ns) @ 251Mhz is doable on the sticks, I know that. But the fun thing is, I run Orthos, CPU-Z and CoreTemp and the thing simply freezes randomly, sometimes after almost 4 hours, sometimes after about 1.5 hours. I read it could be Voltage problems so I added all sorts of V's but no go.

Now I read to deselect Orthos' MBM option, but that didnt fix it either. As I know my temps for the CPU by now Ill just not run CoreTemp anymore with it as well as CPU-Z. Installed Smart Guardian as hopefull replacement for CoreTemp but it's crap... I hope then. It showed my CPU jumping from 55-53-57-60-53... Then I quit it as I simply cant believe that. CoreTemp at least stayed very stable around/below 50C.

Also I read Orthos can be buggy and makes the system freeze, so Im going to run Prime95 again. But system freezing without any difference from adding Vcore/Vdimm etc makes no sense. It doesnt error nor does it BSOD.

Also I'd like DFI makes a BIOS with some better RAM compatibility as my sticks dont run nice on high HTT's at all.

Anyone maybe knows what could cause system freezes? Did the Orthos/CPU-Z/CoreTemp sounds possible or is there really something messed up in my system then?

[Brother Esau]

Why don't you just use one of my examples on the front page? Adjust Ram stuff for you're sticks accordingly!
Why such low HT?

The SB600 HDD controller on this board is Pure Sh@t in every sense of the word! I am sorry I really like this board but its completely unusable without a Dedicated Hardware Raid Controller Card.

From my understanding from other owners of other boards IDE Drives just do better than the Sata drives in this Board and from my brief several go around with the SB600 controller I would be inclined to believe that would be correct considering the readings HDTACH gives for 2 Raptors in Raid 0 ,,,,,,,,LOL....its a complete and utter joke!

[Rammsteiner]

Yeah, I tried all your RAM settings, enabled 2T command, and a few clocks were auto shown as 0 or 1 which I thought might be quite low and increased them to 2.

Added a little bit more Volt as stock wasnt enough (which is understandable with 4 DIMMs). Disabled the lower two settings which looks like EPP things. Im Priming now and hope it doesnt freeze so I can go up from there.

Ive no clue what the freezes were caused by but after I read Orthos has the possibility to freeze sometimes I was like 'z0mfg!'. So using Prime again. Do you have any clue what other things might cause a freeze? AFAIK it can also be too low Vcore but Im very sure that's allright.

Do you think the SB600 could be causing my HDD to corrupt by high HTT speeds? If that's true Im pretty much f*cked then as Ive no RAID controller. WOuld using the Marvell controller be a better idea?

Thx!

PS some feedback on OCing 4x 1GB modules if available anywhere would be awesome too.

[Brother Esau]

The SB600 is useless and the later bios change the Option Rom for SB600 but I only tried it in ALPHA stage prior 12/11/07 But that was crap as well
Use a IDE drive and see if thats the issue. The Ram I have no experience overclocking 4 sticks but if I remember correctly you must enable the Memory Hole option for 4 sticks of Ram on the NF4 DFI Boards see if that works.

At first leave all but Primary Timings on AUTO please!