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

[Sparky]

OK So I think my M2RS is defective I tried to bump the multi from 11.5 to 12 again and nothing, but then I couldn't get it to post again. Reset cmos, set default settings again (SPD sets too high of timings) and save, no POST. reset again, try again, no POST. I finally got it to POST and boot up now, but I am running on not-standard settings. I pulled the power to my gfx card and turned the PC on, it should at least complain about that, but nothing. Something is goofy on the board

How good is motherboardpro.com with an RMA? I'm considering buying a different board and sending it in for a refund as I can't be without my PC. maybe even go intel since this is totally driving me crazy...

[3oh6]

3oh6 thanks for your info, when your ready to go for some more oc-ing, could you check your max htt speed with these sticks? just to check the above theory!

ahhh, you just missed me. i am back to the Phenom for a whole pile of benches but i do have to switch to another Phenom sometime tomorrow or Monday so at that time i will take 10 mins and see if the HTT i can reach with 2x1GB is the same as the 2x2GB kit. before, i had the 5000+ in there with a kit of FireStix PC2-9600s (2x1GB) and 330HTT wasn't a problem but i couldn't get much higher than that for some reason. i will at least see if it gets that high with the 2x2GB OCZ platinums.

keep your eyes on this post monday afternoon/night sometime

[ZL1Killa]

OK So I think my M2RS is defective I tried to bump the multi from 11.5 to 12 again and nothing, but then I couldn't get it to post again. Reset cmos, set default settings again (SPD sets too high of timings) and save, no POST. reset again, try again, no POST. I finally got it to POST and boot up now, but I am running on not-standard settings. I pulled the power to my gfx card and turned the PC on, it should at least complain about that, but nothing. Something is goofy on the board

How good is motherboardpro.com with an RMA? I'm considering buying a different board and sending it in for a refund as I can't be without my PC. maybe even go intel since this is totally driving me crazy...

motherboardpro is awesome! trust me. talk to mike and tell em Campbell said hey and ZL1Killa (campbell is BrotherEsau)

[Oese]

@ DPeter: Yes I do think that htt and memory divider are connected. The cold bug issue when having x2's under extreme cooling shows this clearly.. The cold bug (i.e. lowered max htt under extreme cooling) is dependend on the imc, which is the first 5 letters of the processor stepping (ccbbe, ccb9e and so on..).

so thats my theory and its nice for me too to have some people that could test with their rigs...

the guy with the gigabyte and different cpu's (and a m2r as well) is wishes in this thread: http://www.forumdeluxx.de/forum/showthread.php?t=463011

@ all: Is there a dram timing skew option in any bios version??

[Brother Esau]

Hello one and all I'm back online

[Jaivan]

Hello one and all I'm back online

Its about time!! How long does it take to move?!!.........JK back.

[Brother Esau]

So how is the 1/30/2008 Official Bios working for everybody??
Been busy with the move and only used it for a couple of days prior to breaking down my system for the move.

[KTE]

Good to see you back Campbell.

Thought you had lost your way to home for a second. Home as in XS

[Brother Esau]

Hey, Tye how the hell are ya? Have you re-upped and gotten a DFI 790FX-M2R

[Oese]

With 1/30/2008 as well as with 2/12/08 beta i have trouble running high htt's with my 2x2gb memory kit. Won't boot above 290Mhz .. Older bios's not tested yet.

With half multipliers i'm stable at high htt's, but memory performance is lowered a lot (1/2 - 2/3).. Do you know something about this behaviour?

A member from forumdeluxx/Germany found out that on his asus 790fx mobo adjusting the dram timing skew diminished this problem.. would it be possible to add such an option to the bios, or is there a version with this option available?

I'm used to it since my first s939 dfi mobo..

[Brother Esau]

I'm running X10 Multi @ 353 so I have not had any of those issues that you speak of

Try enabling the Memory Hole Remapping feature in Bios that should do the trick with 4GB Ram

[Oese]

ahhh give it a try thx!

edit: mmh had memory hole remapping enabled already, i think this is necessary for the bios to recognize 4gb...

enabled memory hole instead.. did not really help.. following tests with/without memory hole enabled were the same..

266x12 DDR800 HTx5= 3,2Ghz cpu 1066mem is rockstable

275x12 DDR667 HTx5= 3,3Ghz cpu ~840mem is at least 2h primestable

320x10 DDR667 HTx4(3,2,1) wont boot

320x10 DDR533 HTx4 boot

330x10(8,6) DDR533(400) HTx4(3,2,1) wont boot

looks like imc/memory issue right? upping nb/ht (mobo) voltages didnt help..

[Oliverda]

So how is the 1/30/2008 Official Bios working for everybody??
Been busy with the move and only used it for a couple of days prior to breaking down my system for the move.

It's the best BIOS so far. I use my Phenom 9500 @ 2.8GHz stable with it.

[Brother Esau]

ahhh give it a try thx!

edit: mmh had memory hole remapping enabled already, i think this is necessary for the bios to recognize 4gb...

enabled memory hole instead.. did not really help.. following tests with/without memory hole enabled were the same..

266x12 DDR800 HTx5= 3,2Ghz cpu 1066mem is rockstable

275x12 DDR667 HTx5= 3,3Ghz cpu ~840mem is at least 2h primestable

320x10 DDR667 HTx4(3,2,1) wont boot

320x10 DDR533 HTx4 boot

330x10(8,6) DDR533(400) HTx4(3,2,1) wont boot

looks like imc/memory issue right? upping nb/ht (mobo) voltages didnt help..

Usually its the CPU which is the limiting factor with AMD and some CPU's just don't care for certain multies no matter what you do with them and I can attest to that throuh experience with some of the 939 Opterons whats you're HT Multiplier at 800? thats what I run mine at!

Thanks Oliverda I like the Bios as well

[Oese]

Yes I believe its the CPU.. I'm running HTx5 (1 Ghz) 24/7 (1330Mhz HT gives me 300Points more in 3dmark06 I like this about the am2+, someone from forumdeluxx has his running @ 1600Mhz with an x2 no problem...)

Besides the described limitations i'm very pleased with board and bios as well.

A dram skew option would be nice whatsoever

Thanks for your help and advice!

Öse..

[Brother Esau]

Try dropping down to X4 = 800HT and lowering you're Multiplier
Look at the Bios Templates Overclocks I did on the First page of this thread and see if you can get any love with those guide lines

[Oese]

Of course I lowered the ht multi to achieve higher htt, as posted above, not that new to oc.. But I will look through the templates again.. don't mind I believe its my cpu/imc, and 3,2ghz 1066mem is fine though..

running @ 3,35ghz (highest achievable with 1,5v at prime) with mem @ 840 does not give me THAT more speed, so I'm comfortable.. Will go for phenom with b3, 6400's too costly for me if i can get a phenom at about 20€ more or 5200+ windsor perhaps

looking forward to first results with phenom b3 stepping on this board

ahh another little question: does it make sense to get htt cpu boot up clock as high as possible? i left it at 200mhz...

[Brother Esau]

I set my Boot HT to 320 or 350 200 is too low but leave the adjustment HT Gap at 5mhz

[Oese]

ahh thx.. every little bit helps..

but... not a chance

[Oese]

looks like a new bios arriving soon at the dfi beta download site??

[Brother Esau]

looks like a new bios arriving soon at the dfi beta download site??

Kinda lame past 2 beta's only focus in on that!

[Oese]

What do you mean? Only focus on RAID bios update?

[Brother Esau]

Yes Raid Rom update. But I suppose that its much needed as I do not use it because of my Raid Controlller but I have used the SB600 for my Raptors in Raid 0 testing and submitting bugs and it most definitely need major improvement !

[Oese]

they better get it fixed, i know a lot of people having trouble with the uli sb raid on the cfx's.. most annoying..

[Brother Esau]

This is totally different and not ULI but its a dog none the least and it needs serious attention.