Official eVGA 780i Discussion/Review/Overclock/Guide Thread

[E.R]

Does SLi really works there? i get around 56000 on one 8800GTX and Vista 64.
Same CPU, a QX9650@4GHz.

[Mk]

Does SLi really works there? i get around 56000 on one 8800GTX and Vista 64.
Same CPU, a QX9650@4GHz.

I dono but thats the only 3D mark i have
Cant find a fast download link for the 2003 or 2006

[jkresh]

currently at 3.6 (450*8 or 400*9 at 1.39v actual) right now, can post at 4ghz but can't get prime to run for more then 15 minutes (even at 1.5v actual)

much better overclocking with quads then my old p5wdh

[FuriousSalesman]

sorry to bump this, but I have a question.
I was reading a review of the XFX 780i at this link.

http://www.pcper.com/article.php?aid...e=expert&pid=5

There is a CPU N/2 option in the bios that allows another .5 to be tacked on to the multiplier.

I am not sure if that is an exclusive on the 780i. There has been some debate over 8500 vs Q9450. The problem with the 9450 is its 8 multiplier. However, will the CPU N/2 option work with a quad and make the effective multi 8.5?

If so, then overclocking the q9450 will be a tad easier correct?

q9450
possible?
8.5 multi x 471 FSB = 4003.5 Mhz

normal
8.0 multi x 500 FSB = 4000 <--- difficult to do, I presume

a .5 increase on a 8500 could make it go sky high too.

[Justifire]

sorry to bump this, but I have a question.
I was reading a review of the XFX 780i at this link.

http://www.pcper.com/article.php?aid...e=expert&pid=5

There is a CPU N/2 option in the bios that allows another .5 to be tacked on to the multiplier.

I am not sure if that is an exclusive on the 780i. There has been some debate over 8500 vs Q9450. The problem with the 9450 is its 8 multiplier. However, will the CPU N/2 option work with a quad and make the effective multi 8.5?

If so, then overclocking the q9450 will be a tad easier correct?

q9450
possible?
8.5 multi x 471 FSB = 4003.5 Mhz

normal
8.0 multi x 500 FSB = 4000 <--- difficult to do, I presume

a .5 increase on a 8500 could make it go sky high too.

If you think that you can add .5 multiplier to the Q9450, you're wrong.
Q9550 has a multiplier of 8.5 Q9450 8.0

[FuriousSalesman]

If you think that you can add .5 multiplier to the Q9450, you're wrong.
Q9550 has a multiplier of 8.5 Q9450 8.0

Then what does the CPU N/2 option do? Or does it only work with the current 65nm chips?

[Justifire]

Then what does the CPU N/2 option do? Or does it only work with the current 65nm chips?

As you can read, it's for the q9550 to use the 8.5 multiplier.

[froste]

New BIOS for EVGA 780i SLI is posted. Version P03.

Updated Yorkfield microcode
Improved stability for > 800MHz memory
Additional support for future graphics cards

http://www.evga.com/forums/tm.asp?m=...1&key=&#230745

[GAR]

Thanks EVA....got it up and all looks good.

[ppcli]

well see if the 1 i had to rma comes with the new bios.get the mobo on the 24th of dec and its rmad on the 10 of jan.gets to evga and find out theres a 7 day+ wait before ill see 1 shipped.its race now see if the mobos here bfore the 9800 gx2s our out.

[Ten]

hi guys
Im having some problem with my new rig(XFX 780i and 8800gt@ SLI) and nvidia driver, my regular PSU Enermax Infinity 720w gaveup the day before i put this things in, now im sitting on a Ipower 600w PSU.
It put my gfx in endless loop and so on and advise or tips? and if someone could share there setting would be great
Sorry for spelling and so on just got off nightshift

[icon57]

Here's she is...

is this available yet?

i have the regular version, still in the box...

[fadetoblack]

I just picked up one myself, playing around at 4ghz with 2 8800gtx's. Should i go for another one?????

can you post your bios settings? i cant seem to stabilize 4ghz on this board.

[seamumc]

is this available yet?

i have the regular version, still in the box...

Nope, this was anounced a couple weeks ago without any indication of a release date.

Which is kind of lame as this sounds like a good design and I know more then a few of us are waiting for it.

[icon57]

^^^
hmmm...well i am just gonna build a rig with what i have, and see what happens when this is released... thx

[Khaotic]

there is a simple vdroop mod, look at the first post, i have no vdroop
takes only 1 minute to do.

Tried to follow that link. Picture did not load. Probably needs to be reposted. Can someone please repost picture of vDROOP pencil mod.

Still trying to find good results here of RETAIL Quad Core 68x0 chip. Seems to be a lot of talking in circles about dual cores. Some of us gamers have no need for a Quad on this SLI board.....

[icon57]

i am getting a "floppy disk fail error" on POST that stops the process, and i have no floppy connected, and disabled in bios.....anyone?

[fadetoblack]

i am getting a "floppy disk fail error" on POST that stops the process, and i have no floppy connected, and disabled in bios.....anyone?

disable your drive A

[GAR]

Anyone mount a thermalright ultra 120 extreme, the backplate is touching some board components, im afraid of crushing it????

[GAR]

also what pci-e mhz is everyone using, im at 135 with no issues so far.

[joe.denice]

Anyone mount a thermalright ultra 120 extreme, the backplate is touching some board components, im afraid of crushing it????

I am using one in my rig and so far so good. I have had the board for about 5 weeks now and its running pretty well. Hopefully this will keep up. :crosses fingers:

[icon57]

Anyone mount a thermalright ultra 120 extreme, the backplate is touching some board components, im afraid of crushing it????

i put mine on last night, no probs at all, idle temps about 37c...not in the case yet...still benching it

[Khaotic]

Ok, it seems that my ISP was having some issues and pictures were being stripped from the forum. That made it look like the pencil mod post was a dead one, but i see now.....
The picture shows the resistor as a 100K ohm resistor. I understand the point of a pencil mod is to try and lower that resistance by a certian amout/degree. What is the target resistance we're looking for there?
I've measured mine and it is dialed to 100K. So I just need to know what I'm trying to tune it to with the pencil lead.

[icon57]

It's a grounding "spring" for the MCP heatsink and should be in contact with the MB tray (according to the guys at the evga forums).

I just finished modding my 780i. And by mod I mean getting it to run under boiling. An out-of-the-box test run had the MCP (southbridge) running at 90C. It went as high as 96C while I was setting up the BIOS.

Apparently, nvidia has a brilliant heat management strategy for their MCP chips which involves tons of thermal paste, and foam heat pads. Except, the foam isn't supposed to be a heat pad. After taking off the MCP 'sink, removing the misplaced foam spacers, bending the heatsink so it was flat and flush, reapplying a reasonable amount of thermal paste, and painstakingly reattaching the MCP heatsink, I am now running between 60 & 70 wishing for a LC solution.

And from what I'm reading at the evga forums, I'm not the only one who got a board where the foam spacers were misplaced and making contact with the northbridge and southbridge chips.

i have watched mine spike as high as 106c....

what is the MCP, and is that the small black heatsink on the top of the board near the cpu? and if so...any alternatives to cooling this are? (air cool)
what about gpu heatsinks? can they be used in this area ?
TIA

[fadetoblack]

I am using one in my rig and so far so good. I have had the board for about 5 weeks now and its running pretty well. Hopefully this will keep up. :crosses fingers:

could you please tell me all your bios settings for you 4ghz oc? i had my qx9650 stable at 4 on my previous x38 but i cant even get it stable at 3.6 on this 780i.