nForce 790i SLI/Ultra chipset mobos - Reviews/OC/Guides

[stickybz]

Hi

Is anyone running 4Gb DDR3 1800Mhz on this board. Have 2Gb OCZ 1800 with asus 790i ultra, but thought read somewhere is problem with 4X1Gb modules @1800??!!

[pinto]

At C1 (Base Memory Detect), my EVGA 790i is hanging (damn I hate that incessant beep). The mem volt light is orange, both of which lead me to the RAM. No matter which slot I use with which stick (either and/or both), it looks like either my board or this Cellshock PC3-14400 is DOA (both sticks? hard to believe). I don't think its that this board doesn't like Cellshock, since IIRC there is someone on these boards who is also using this combo.

To be sure it wasn't CPU related as I just got an E3110, I also tried my X6800. Same results for both.

Resetting CMOS does nothing.

Removed everything non-essential.

Banged head against wall.

Anyone have any ideas or am I doomed to RMA land on what was supposed to be the savior of my 680i troubles it replaced.

Same problem here, it's the ram voltage at first boot (1.5v). I bought some low end DDR3 (PC8500@1.5v) and it boot immediatly! Set the vddr to what your cellshock are usually works and switch the ram, no problem anymore.

[funkflix]

Know about that problem to good too.. First problem is the Vdimm of 1.5V and second problem is the default 1T. Try with one DIMM in the gray slot with the greater distnce to cpu. It worked for me. Then set Vdimm higher and enable 2T.

Have a lot of trouble with my OCZ PC12800 7-6-6-20 EB on the XFX. They clock really bad, not like some Micron stuff. Highest possibe memclock without corrupted windows boot is about 850MHz 8-8-8-24 2T 1,95V. Will get some Cellshocks in the near future.

[sonofander]

the cells shocks are awesome!!! - but my troubles continue

Still can't run ram unlocked

[dinos22]

the cells shocks are awesome!!! - but my troubles continue

Still can't run ram unlocked

so locked no problems at same speed?
yet unlocked has issues?

i would try playing with SPP/MCP volts a bit

i don't seems to have issues locked or unlocked but from my experience gray slows were clocking RAM poorly with initial bios

black slots were much better

[sonofander]

so locked no problems at same speed?
yet unlocked has issues?

i would try playing with SPP/MCP volts a bit

i don't seems to have issues locked or unlocked but from my experience gray slows were clocking RAM poorly with initial bios

black slots were much better

all my volts are maxed... ram in black slots... newest bios... good ram... --> still can't run unlinked mode
I really want to run my memory at 2000, so I guess I'll just have to run my FSB @ 500




500 fsb on a quad! I love it

[dinos22]

amazing

anyways something is odd there

also don't use max volts unless you have to

[sonofander]

amazing

anyways something is odd there

also don't use max volts unless you have to

I have to! Anything less than 1.55 on SPP and 1.45 on FSB results in BSOD even at 450 fsb. I've tried systematically dropping volts and it always results in reboots. I've read that others just raise fsb w/out touching volts, but that's not my experience at all...

Maybe I just have a buggered board???

[slim142]

Wow I envy you sonofander!!!!! 2000:2000!!! thats pretty good if you ask me.

However, I can see a lot of people complaining about the default vdimm, how come I never heard about this on before boards from eVGA? (680i, 780i)

Also, does the board like to run in 1T at high frequencies? or is it just that sonofander has come golden sticks?

[Big Myke]

how come dinos or other testers have not mentioned this at all before the release? hmmmmm *shakes head* Unless this will be a problem with boards after the release. Strikers better not have this problem...oh man oh man. Fander, I am very sorry that you are having these poor experiences with you board. With the pricey you pay you'd expect to use the features that came in the box. Have you made a thread on the evga forum about the problem? Any support?

[sonofander]

how come dinos or other testers have not mentioned this at all before the release? hmmmmm *shakes head* Unless this will be a problem with boards after the release. Strikers better not have this problem...oh man oh man. Fander, I am very sorry that you are having these poor experiences with you board. With the pricey you pay you'd expect to use the features that came in the box. Have you made a thread on the evga forum about the problem? Any support?

If poor experience = 500 fsb on a quad w/ ram @ 2000 1T, then yeah, I'm having a terrible time with this board

Seriously though, it does seem my board is a little quirky. Having some bigger problems now as it stopped running quad sli. With 2 9800 gx2s installed, I'm only registering 3 gpu cores. Each card installed individually shows 2 cores, but put them together and I only have 3.

Looks like I have an RMA in my not too distant future

[slim142]

Sonofander, hopefully you keep in mind that an RMA might not achieve what you have done so far. 80% of the times happen that second boards dont do what the first did.

Do you think it might be drivers problem? Why dont you wait for next week for official quad drivers? Have you tried the new 170.70 leak?

And btw, now that I see your signature, can you tell me, are those thermaltake PSUs good? are they loud?

[Big Myke]

not being able to unlock and having boot/stability issues is poor experience in my book I guess. I guess I read you wrong. enjoy being linked.

[Leeghoofd]

If poor experience = 500 fsb on a quad w/ ram @ 2000 1T, then yeah, I'm having a terrible time with this board

If ya need to max out every voltage, have how long will the board perform at this level do you think ? it are impressive speeds and would be nice to have it 24/7 at those but not with everything maxed out...

[sonofander]

so I found the reason for the neccisarily high voltages... it's my ram timings!
as soon as I put my ram timings on auto, I'm perfectly stable @ 450FSB with all auto voltages (SPP, MCP, FSB)

what gives??? am I suppossed to run my ram all loosey goosey???

mem @ 1800 7-6-5 1T = maxed volts on NB & FSB

mem @ 1800 8-7-6 2T = all volts auto

[sonofander]

If ya need to max out every voltage, have how long will the board perform at this level do you think ? it are impressive speeds and would be nice to have it 24/7 at those but not with everything maxed out...

I guess I'm just not used to nVidia chipset... max NB volts on this board are 1.55v. I'm used to having to run ~ 1.65v to stabalize my NB on an intel board, so even though I have it "maxed at 1.55v, it still feels low to me

[humeyboy]

Like the Striker Extreme and Striker II Formula, I bet you will find the Striker II Extreme will have far higher volts for all options.

Its just the fact you have a Nvidia Ref Mobo thats all.

[Leeghoofd]

I guess I'm just not used to nVidia chipset... max NB volts on this board are 1.55v. I'm used to having to run ~ 1.65v to stabalize my NB on an intel board, so even though I have it "maxed at 1.55v, it still feels low to me

Can you try 1800 7-7-7-20 1T ? does it still need max voltages then ? but 500FSB is pretty nic eman on a quad , wish I had one that did that

Hows does the bandwith perform once you go over eg 400 ? can you check 400FSB x 9 with 450FSB x 8 ? and if possible keep ram at 1800Mhz...

thx for any input...

[dinos22]

how come dinos or other testers have not mentioned this at all before the release? hmmmmm *shakes head* Unless this will be a problem with boards after the release. Strikers better not have this problem...oh man oh man. Fander, I am very sorry that you are having these poor experiences with you board. With the pricey you pay you'd expect to use the features that came in the box. Have you made a thread on the evga forum about the problem? Any support?

i don't have these issues obviously

[dinos22]

so I found the reason for the neccisarily high voltages... it's my ram timings!
as soon as I put my ram timings on auto, I'm perfectly stable @ 450FSB with all auto voltages (SPP, MCP, FSB)

what gives??? am I suppossed to run my ram all loosey goosey???

mem @ 1800 7-6-5 1T = maxed volts on NB & FSB

mem @ 1800 8-7-6 2T = all volts auto

heheheheheh
that's the problem

ppls trying to be too smart when OCing

[slim142]

Can you try 1800 7-7-7-20 1T ? does it still need max voltages then ? but 500FSB is pretty nic eman on a quad , wish I had one that did that

Hows does the bandwith perform once you go over eg 400 ? can you check 400FSB x 9 with 450FSB x 8 ? and if possible keep ram at 1800Mhz...

thx for any input...

Yeah I would like to know that too, memory bandwidth with FSB at 400, 450 and 500 if you could please, if possible at x9 with RAM at same level at all test to see memory bandwidth.

[sonofander]

I can't run my ram in unlinked mode... What you guys are asking me to do is something I can't do... Sorry

I've given up on trying. I've gotten my ram to 2000 w/ fsb and stabalized it. Happy as piss about it too! Never thought that would happen with a quad. Honestly, I was about to dump it and grab an e8400 and roll with that...

Don't have to do that anymore!!!

[sonofander]

another thing... Any word on a pencil mod for this board to get rid of the vdroop? Dinos???

[funkflix]

Anyone here with a vmodded GTS or better two on a 790i board? I have some strange things going on here..

I'm 100% sure that both GTS are set to 1.333V idle before i put them on to the XFX board(tested on P35 and AMD 790FX), but now i measure just 1.118V in idle on both cards.. When i disable the mods then i measure just 0.996V in idle, thats less then the default specification for the GTS.

Hope someone can help me here!

Edit: Problem was a empty battery on my one DMM..

[dinos22]

another thing... Any word on a pencil mod for this board to get rid of the vdroop? Dinos???

join this thread regarding volt mods
almost all complete but input is needed

http://www.xtremesystems.org/forums/...d.php?t=181677