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

[dinos22]

great man

i'm sure you would get another improvement once you tweak subtimings

i found that
tRC 18-20 works well
tRFC 48-58 (actually for stability i stick to 56 here)
tWR you can lower in bios but it doesn't do much for spi
tWTR 16-20 works well
tRRD i ran at 3 on last set of tests....

all subtimings combined and bam you got yourself a spi machine hehe


hey btw it is P1=Enabled that is stopping you from going higher in FSB but the trade off is not worth it if you are benching superpi (or you could prove me wrong hehe)

if you are crashing try lower RAM speeds first before anything else as those clocks are pretty amazing 1090 eek

[saaya]

hehehe, thanks bro

its not me who hooked you up with her so dont thank me hehehe
thank yourself or her

Let me get this straight.
You try to power on the board... it "fires up" for a sec ( or half a sec ) and automatically shutdowns.
If you press the power switch again, does it power up again or doesn't do anything ?
Because the second thing is saying "Short-circuit...somewhere" [ and short-circuit could also mean dead hardware ]

exactly, if it does that once, then it sounds like short circuit.
if it only tries to power up once and then nothing for seconds to minutes, then short circuit, OR bios is fubared! this happens on p5b deluxe boards sometimes. what you gotta do on asus p5b boards in this situation is:
turn off psu, turn on psu, move jumper from normal to reset position, keep the power button pushed. wait for a few minutes, then move the jumper back to normal position. as soon as you do that the board will fire up immediatly.
it will then boot or you can shut down the psu, turn it on again and then boot.

no idea if this works with your board, but give it a try...
with the striker 1 boards there were maaaany bios corruption issues as well...

I'll cancel my Maximus auction on Ebay and keep it for a few more days after I get my SIIE. You guys are freakin' me out w/ these horror stories!! Seriously, is there anybody happy with this board??

OBR loves his S2E
and webwilli loves his one too, but he said himself hes not really pushing it at all and not clocking high

start from 550 in 5GHz incrememnts (all booting from bios)

now now, i know the 790 ocs fsb pretty nicely, but dont you think your exxaggerating a lil here?

jody, nice n low trfc for 1050+ clocks... nice!

[3oh6]

yeah, still leaving P1=enabled for now...SPi, as you know, is pretty much my goal with most any setup. getting this 790i down to the efficiency of the P5K3 at 500~535FSB PL6 is not going to happen, but looking at what i have pulled off here tonight, 550FSB+ might give the edge to the 790i.

as for the timings...the above were just to try and get 1100MHz, but this kit absolutely does not like tRFC below 65. although i have just been doing dual32M testing and anything near 1200MHz needs tRFC up to 65 for that.

lowered vCORE to 1.525 in BIOS and spit out a 1M at 555FSB so looks like there is a bit more headroom to be had. much thanks for the tip on higher vCORE, would have never tried that. now i really want to get this board under cold to see what it can do...where did i put those 9800GTXs

[dinos22]

now now, i know the 790 ocs fsb pretty nicely, but dont you think your exxaggerating a lil here?

i was being serious

saaya when you get stuck with mobos at certain settings then you have to try some radical settings to see how the board responds

i remember having FSB issues with a GB X38 board i had and i decided to jump from 480 to 550 just for kicks and it booted even though slightly higher mhz than 480 were starting to freak out

you just gotta try it

i reckon if Jody disabled P1 and used his SS cooler he would bench close to if not past 600MHz FSB i reckon

[dinos22]

those P5K3 DLX boards were just magic for superpi
killer PL and high FSB and nothing can beat them hey heh

much thanks for the tip on higher vCORE, would have never tried that. now i really want to get this board under cold to see what it can do...where did i put those 9800GTXs

yeah vcore test was an accident for me too as i was scratching my head how come i could do easy FSB OCs on subzero and not on air/water

besides better cooling i realised it was a voltage balance that also had an important aspect lol and vcore played a part which was quite amusing heh

[webwilli]

OBR loves his S2E
and webwilli loves his one too, but he said himself hes not really pushing it at all and not clocking high

i still testing the board

Give me time

[OBR]

thats a great FSB, far far from ability of reference boards ...

[antoine76]

Hi

I have problems with high FSB on my xfx 790i (bios P03R2).
I can boot windows at 530fsb and it's stable but 531 not, just freeze during the ide detect.

My cpu can do 575fsb on P5E3 Dlx (and 550fsb stable), maybe limited by the X38 too...

Any ideas ?

[Broly]

i did enable it dinos

[Coolclocks]

Oi dinos

Is there already a clockgen/setfsb available voor the 790i?

[slim142]

Nice OC webwilli

[eternal_fantasy]

thats a great FSB, far far from ability of reference boards ...

Say wha?

595MHz stable FSB on SS phase
on water i've done some 575MHz 32M runs

but it really depends on the chips
and it does take a little while to tune it right as well as i've had times during testing where it won't boot at 525 with another chip lol (vcore wasn't in the right range )......you do have to hit sweet spots if you are on air/water for volts >> for air/water you have to tune GTLRef a little as well as volts to get what you want out of the FSB

if you have subzero it is waaaay easier....you just bump the volts and just start from 550 in 5GHz incrememnts (all booting from bios)

i can boot at 611MHz i think it was (~5.8GHz) but FSB isn't stable

charles is perfectly stable at 600MHz FSB with his E8400 chip

Sorry OBR, but you fail.

[OBR]

32M runs not stable settings ... what we need, i can do some stupid screens at high FSB too (with E8400) but for what, when system is not Prime95 (OCCT) stable?

[TheGoat Eater]

where can I get P03R2 for Evga ?

[eternal_fantasy]

32M runs not stable settings ... what we need, i can do some stupid screens at high FSB too (with E8400) but for what, when system is not Prime95 (OCCT) stable?

Don't get ahead of yourself. I was merely pointing out that you wrote

thats a great FSB, far far from ability of reference boards ...

Just because someone posted a CPU-Z validation. As far as I'm concerned the CPU-Z Validation was the "some stupid screens at high FSB", and the 575MHz 32M runs was the "stable settings".

Ergo these "great FSB" you were referring to are well well within ability of reference boards.


note: nothing personal webwilli marely using your post as an example.

[GAR]

enable both P1 and P2

What are those and how do i enable them???

[bellinghamwa]

What voltage would y'all recommend for the CPU FSBwith a E8400 on 790i at 3.6 (1600 linked/synced)? The CPU Core is on Auto (1.32v in CPUID).

I had all voltages (except RAM) set to Auto, but was experiencing lagging and freezing in Crysis. I manually increased the CPU FSB to 1.35v from Auto-1.30v and increased the SPP to 1.40v from Auto-1.30v, and it lags less, but was wondering if I should increase the FSB to 1.4v instead of 1.35. The only problem is that it is in red instead of green. Before I put the E8400 in I had a E6750 and it automatically set the CPU Core and the CPU FSB to 1.4 (green).

[slim142]

What voltage would y'all recommend for the CPU FSBwith a E8400 on 790i at 3.6 (1600 linked/synced)? The CPU Core is on Auto (1.32v in CPUID).

I had all voltages (except RAM) set to Auto, but was experiencing lagging and freezing in Crysis. I manually increased the CPU FSB to 1.35v from Auto-1.30v and increased the SPP to 1.40v from Auto-1.30v, and it lags less, but was wondering if I should increase the FSB to 1.4v instead of 1.35. The only problem is that it is in red instead of green. Before I put the E8400 in I had a E6750 and it automatically set the CPU Core and the CPU FSB to 1.4 (green).

CPU FSB looks ok, try increasing the SPP to 1.45v

According to what Im reading from your post, I think you havent checked if the CPU is estable yet. Use OCCT or Orthos (blend test) to see if your CPU is estable.

[bellinghamwa]

Is there any reason why the Auto settings would set the FSB to 1.40v with the E6750, but set the FSB to 1.30v on the E8400? Is it that the FSB voltage should match the CPU Core voltage? Note, the Auto settings for CPU Core were 1.40v for E6750 and were only 1.30v for the E8400.

[BenchZowner]

Is there any reason why the Auto settings would set the FSB to 1.40v with the E6750, but set the FSB to 1.30v on the E8400? Is it that the FSB voltage should match the CPU Core voltage? Note, the Auto settings for CPU Core were 1.40v for E6750 and were only 1.30v for the E8400.

The default Vfsb for the E6xxx series is 1.2V, while it's 1.1V for the E8xxx series

[GAR]

Aright fellas, a quick update, 450fsb seems to be the stable point for this board, latency is really relaxed, because my bandwidth at 900mhz 8-7-7-24 2.0v my bandwidth is 9000mb, latency is 65..........but system passes prime blend




P03 bios, prime blend stable for several hours

[RawRick812]

could anyone give me a little push in the right direction. Im looking for a 500 2000 fsb on this rig and am kinda new. here is what I got so far but not as stable as I want. this is Crucial Ballistix ddr3 2000 on a new Striker II Extreme I know it can do a lot better than this. If someone could post there bios settings it would be very helpful. also any suggestions. thanks

[day187]

Finally booted up @ 500FSB from bios on my EVGA



Vcore is high need to work on that...

[|SiLA|]

having some problems now with my s2e

using ez flash with a pendrive can't flash my old 0402 bios to 0508

keep getting invalid rom id

[webwilli]

don´t flash 0508

use 0511 or 0512

http://rapidshare.com/files/107112839/0512.zip.html