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

[Brother Esau]

*NEW* DFI UT 790FX-M2R ~ 3/31/2008 Beta Bios.............http://us.dfi.com.tw/Support/Downloa...FLAG=B&SITE=US

[KTE]

Yea, I agree with Tony to some extent. DFI had more trouble running 1066 than ther boards but they can run it and a few other boards can run it with ease at 4-5-5-15-11, and if not, then certainly 5-5-5-15-14.

[Brother Esau]

I think its a incompatibility issue with these sticks on that level (Bios) because others are running the 1066 divider just fine in this thread with Phenom so I know the board can do it

[justapost]

*NEW* DFI UT 790FX-M2R ~ 3/31/2008 Beta Bios.............http://us.dfi.com.tw/Support/Downloa...FLAG=B&SITE=US

Thx bro,

Flashed it with winflash 1.92 from 3-07.

1. NB multi can only be choosen if CnQ is disabled, so CnQ tweaking can only be used with an 9x multi.
2. Raid Performance is equal with 3-07 for Raid0 and Raid10 performance gives me ~10MB/s better burst now (HD-Tach).
3. Can not even get 250MHZ ref HT bootable with the settings i used for max 285MHz on 3-07

So I flashed back to 3-07 and now 280MHz are possible again. One note that ref HTT only works with mem in 800 mode, 667 results in C1.

[justapost]

150mb/s
you guys use vista or xp?? wonder if raid would work like that here as well.. THAT would be NICE

Why not it's pretty cpu independant.

4XWD Caviar SE16 500GB SATA-II 16MB Cache WD5000AAKS Raid-0 Vista Ultimate-64 Bios 2008/03/07

Thank you for sharing your results, we get very similar results with w2k and vista64

1066 booting.

Now i just spoke with my good friend Gary who is a little more upto date with phenom testing that i am regarding booting at 1066.
he explained the new bios files for the MSI, GBT and Asus allow 1066 to work easier that the DFI, this does not mean it won't work though.

I asked if tRFC at 195 was needed...it's a MUST setting

I asked if tricking the board with timing and voltage before speed helped...seems it is needed in some cases..Like with the DFI.

I asked what timings did you have to run, he quoted the 6's (i thought it would be), so try 6-6-6-18 or 5-6-6-18

So if you are looking to test whether 1066 works, go to 2 dimms only, set 6-6-6-18 tRFC to 195, relax the subs and set 2.0V...this all at DDR800. Reboot,
Go back to bios and set 1066, and try to boot again.

I am trying to get a 9850BE to resume testing, when it arrives i will post how and if I get it working.

Strange, 1066 works fine even with 75ns RFC's. Also if you change the mode from 800 to 1066 the memory timings get lost.
Looking out for your 9850BE testings.

[Tony]

Guys if you must play you have to change byte9 to 17 in the SPD, and remember to correct the checksum.

others are doing 1066 as they have true 1066 rated dimms, we have been shipping 1066 since december also so if you have earlier ram you are going to need to set the voltage first before you apply the speed.

Also you really do need to look at 6-6-6-18 timings to start, I had a ton of issues getting 1066 with only the GBT board doing it really easy thru EPP.

so byte 9 to 17, correct checksum and flash, this sets default speed to 1066 on the ram

[aGeoM]

You really can't expect any IC which is above 20W TDP max to run cool on air with that voltage now, can you?
Yep, it'll be idling (no CnQ) above 45C alone.

KTE..., my friend..., I never doubted about your knowledge, far superior and wider than mine, if you said so, I believe in you and learning from you. But I have the feeling that you are missing the ability of the HS to absorb/dissipate the heat, and cooling the IHS on your equation.

Same here but that's different to how you find the max oc for a CPU. I work backwards from max to find max stable

Me too, but for all system, not only the CPU.

The board makes the CPU cool?

Was trying to make a joke, since I haven't realize if I found the "G-Spot" on DFI for be so "cold". Sorry for my "Beach" English, only 2 years English on High School, ages ago.

Now, seriously I just order an 9850BE for 199 euros, expect to arrive by the end of next week. It's available in Germany since yesterday.



Edit: Just saw my hwbot rank.

[Brother Esau]

Thx bro,

Flashed it with winflash 1.92 from 3-07.

1. NB multi can only be choosen if CnQ is disabled, so CnQ tweaking can only be used with an 9x multi.
2. Raid Performance is equal with 3-07 for Raid0 and Raid10 performance gives me ~10MB/s better burst now (HD-Tach).
3. Can not even get 250MHZ ref HT bootable with the settings i used for max 285MHz on 3-07

So I flashed back to 3-07 and now 280MHz are possible again. One note that ref HTT only works with mem in 800 mode, 667 results in C1.

I am really starting to wonder if Oskar is training apprentices for his Bios Team and giving them the AMD 790 Bios as practice (Not Kidding!)

[aGeoM]

I am really starting to wonder if Oskar is training apprentices for his Bios Team and giving them the AMD 790 Bios as practice (Not Kidding!)

Maybe he cud ask for some NEO's help , NEO have been doing a great job for NF2/NF4 DFI boards at DFI Club.

[Brother Esau]

Guys if you must play you have to change byte9 to 17 in the SPD, and remember to correct the checksum.

others are doing 1066 as they have true 1066 rated dimms, we have been shipping 1066 since december also so if you have earlier ram you are going to need to set the voltage first before you apply the speed.

Also you really do need to look at 6-6-6-18 timings to start, I had a ton of issues getting 1066 with only the GBT board doing it really easy thru EPP.

so byte 9 to 17, correct checksum and flash, this sets default speed to 1066 on the ram

If thats the case why not give me a Updated SPD File for my FLEX 9200

[justapost]

The beta bios should fix temperature readings in the first place, have not tried the previous beta to see how much ref HT it gives. 275MHz ref HT primed here for ~ 2hrs (550MHz 4-4-4-12-26 at 2.26V (min)) then the system froze but i was at 2.61GHz with only 1.375V. So I'll try it in small steps with a 10x cpu multi starting at 260MHz.
Question: I downloaded Taiphoon and looked on my crucial dimm's. With that tool i see three different profiles for 200, 333 and 400MHz. CPU-Z shows two JEDEC profiles (333,400) and two EPP (400,533).
Is there a tool for modifying that 533-EPP profile in a way that it will support better that 4-5-5-16 timings at 533?

[Tony]

If thats the case why not give me a Updated SPD File for my FLEX 9200

because it may not work on your memory...plus its out side of warranty.

its so easy to set that byte, just get the cursor over the byte and type 17, then go to Edit> fix checksum and its ready to flash

I am sure you could do this for yourself

[Brother Esau]

Hey , Achmin the 3/07/2008 Bios threw my Temp Readings way out of whack and reinstalled 1/30/2008 for that reason.

The 3/12/08 Beta Bios is very good for my 6400+ BE and very stable but with Phenom installed it was quirky for me and the Damn USB Keyboard would freeze in Bios allot and more than normal and also some instances at Random Just disabling C&Q in Bios would result in a NO Boot situation , also some tiems loading defaults would do the same so I un installed 3/12/08 for those reasons but before with my 6400+ BE i could not say enough positive things about that Beta Release I see that the consensus with 790 Chipset Bios is correct .....Its a very fine line to balance for K8 -K10

[Brother Esau]

because it may not work on your memory...plus its out side of warranty.

its so easy to set that byte, just get the cursor over the byte and type 17, then go to Edit> fix checksum and its ready to flash

I am sure you could do this for yourself

Maybe I am thick on this one but I don't see a byte (9) at all could you please give me a example of what you mean Tony?

[Tony]

You don't need it, I have 4x1GB dimms at 1066 loading vista. it looks like there are a few factors at work here.

1 The CPU's MCH has to be able to do it

2 The bios needs the right code

3 Vdimm looks to be around 1.9 to 2V

4 Drive strengths

I have not changed byte 9 on this test and im doing 1066, I will test with micron dimms also soon.

regards byte 9 its the option for max speed supported at CL...NOT CL-1 etc.

you have 667 set or 800, you have to change the byte its self to 17 as the drop down does not have the correct option for 533

Byte top left is 0 count to the right till you hit 9 and stop, yours is 30, change it to 17. Then hit edit and fix checksum, then hit open,write, and flash the modules.

Do this and you have no warranty, if the dimms fail to boot in any board after this you are on your own

[justapost]

Hey , Achmin the 3/07/2008 Bios threw my Temp Readings way out of whack and reinstalled 1/30/2008 for that reason.

Running that atm.

I assume ~55°C real CPU temp. The reading is not that bad.
Had those really odd readings with my 9500 and shipped sapphire bios on the first day (cpu stopped working few hours later).

03/07/2008 does a very good job with the ref HT here, so i'll stay with that version.

The 3/12/08 Beta Bios is very good for my 6400+ BE and very stable but with Phenom installed it was quirky for me and the Damn USB Keyboard would freeze in Bios allot and more than normal and also some instances at Random Just disabling C&Q in Bios would result in a NO Boot situation , also some tiems loading defaults would do the same so I un installed 3/12/08 for those reasons but before with my 6400+ BE i could not say enough positive things about that Beta Release I see that the consensus with 790 Chipset Bios is correct .....Its a very fine line to balance for K8 -K10

That does not sound promising but i'm curious about how it will handle high ref HT's.
Max I could get on the M3A was ~272MHz but that was far from stable, so i'm quite happy with ~285MHz max here atm.
286MHz is no go area atm, even with relaxed memory timings, high RFC's and weak mode. system gets stuck at post code 43.

[Tony]

check the pics





Bios shots in here also

[Oese]

rrrrrgh need trc > 26 too, but with 800divisor....

[Brother Esau]

You don't need it, I have 4x1GB dimms at 1066 loading vista. it looks like there are a few factors at work here.

1 The CPU's MCH has to be able to do it

2 The bios needs the right code

3 Vdimm looks to be around 1.9 to 2V

4 Drive strengths

I have not changed byte 9 on this test and im doing 1066, I will test with micron dimms also soon.

regards byte 9 its the option for max speed supported at CL...NOT CL-1 etc.

you have 667 set or 800, you have to change the byte its self to 17 as the drop down does not have the correct option for 533

Byte top left is 0 count to the right till you hit 9 and stop, yours is 30, change it to 17. Then hit edit and fix checksum, then hit open,write, and flash the modules.

Do this and you have no warranty, if the dimms fail to boot in any board after this you are on your own

What can I say I did not know thats what you meant But hey its a learning process right Tony and no question is a stupid question when it comes to stuff like this I appreciate your patience and willingness to teach thanks brother

[Tony]

Ok before any of you go setting byte 9 to 17 you must read the following:

Im working on a Phenom special SPD for OCZ ram, I have flashed Micron byte 9 to 17 and I have altered a lot of the spd also

I have a boot from cmos clear at 1066 1.9V on the DFI, previously all i got was C1...just like Campbell

So...stay tuned, specially if you are an OCZ user as i will be releasing an SPD shortly that may allow a straight boot to 1066 with 1GB dimms.

[aGeoM]

OK guys, I'd gave a try on this new beta, all seams to be running OK, temps are the same as before, I even cud raise the HTref a little.

[Oese]

temps with 03/31 are the same as with 03/12 here too (windsor f3 core..)... but they spoke about ERRORS not unlikely readings or such.. and there was a good explanation somewhere... AMD cpu diode on the newer chips is DESIGNED not to give correctreadings but to distinguish between somewhat high or low (although i dont really like that..) readings lower than 55°C are meant to be LOW temp, > 55°C is HIGH...

did not test oc very much with this new bios besides my 3,2gig @ 1,408v which are unfortunately gone since THAT mystic night when they ran 6,5h ... no go as ever since then..

[Brother Esau]

I am currently on the New 3/31/2008 Beta Myself and I see some issues with it and more then one.

Back to the RAM 1066 Divider Issue, its a SPD Programming incompatibility alright Flashed the SPD File to Reaper 1150 SPD that was sent to me when I was on DFI P35 and I am currently on stock Voltages CPU DIE Termination is all on AUTO 5-5-5-18 195ns across the board

Will be Flashing back to 1/30/2008 Official see some things that I don't care for in this Bios and want to see if situation can be duplicated successfully on 1/30/2008

Be Back in a little bit Fellas

[justapost]

@BrotherEsau, can you select better timings than 4-5-5-16 in the bios? I'm still unsure whether it's a SPD or a bios thing.

[Brother Esau]

Well just got back online after 1/30/08 Bios Flash.
@Achmin , I will see whats what soon enough that Beta was not stable for me and it was acting weird and erratic for me at least. I will see if I can get any love with 1066 divider now which was previously impossible on this 1/30/2008 Official with the FLEX9200 SPD which did not work on Official 1/30/08 or 3/31/08 Beta with original SPD File even with Tony's settings until I Flashed the SPD itself