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Update: EVGA 780i Broke 500MHz FSB barrier

O

Owls

Senior member
I seem to be unable to get past 1850MHz (QDR) on this board. Anything higher and it usually doesn't post.

I tried maxing the SPP/MCP/NB voltages but I'm at a loss why it won't go any higher. It is rock stable at 1850MHz though.

My MCP temp is 45C (I took off all the gunk and junk that EVGA used, initially it was at 80C)

Here's my setup

EVGA 780i P03 Bios
Xeon E3110 (@4.16GHz)
2x 8800 Ultra
2x PC-9600 OCZ
1x Seagate 400GB Sata
1x DVD/CDRW Burner
SilverStone Strider 1000w

I wonder if it's just a bum board. I've seen others on the EVGA forums past 1900MHz.

Update:
I dropped my multi to 8 and went straight for 2000MHz. Booted! Went for my last stable speed at 4.16GHz and so far so good! Posted a screenshot below.

Update 2:
Now running at 2100MHz FSB
 
Hi Owls, I have read that these boards have FSB holes. You may have to try a larger jump in FSB frequency than your chip will allow to get the board to cooperate. Anybody have experience with this?
 
That's what I'm reading on the EVGA forums as well. One guy said the 680i had the same problem and were eventually fixed with BIOS updates.

I will try 1950MHz QDR and higher tonight.
 
dang that is some nice stuff, just wondering, how stable is the 2080mhz fsb? just to add, yeah these boards definately have some big fsb holes, my 680i doesnt boot from 401 to 411fsb from what i have encountered so far.
 
Prime95 ran stable for the past 5 hours but after playing CS source for about 40min I got a BSOD. I just finished a 2 hour CS/FSX marathon without any problems after I pushed ALL the FSB/SPP/MCP+SPP voltages to their max. Fortunately I have good cooling so I'm not worried.
 
What kind of cooling are you using?

Also, how likely is it that the FSB holes are similar on all boards using the same chipset?
Meaning, is it likely that my ASUS 780i will have a hole round about the same place and then be all good higher up the ladder?

I'm using the new 0903 bios on it btw.
 
fsb holes i believe are random, i think it will depend largely on the batch of the motherboard (kind of like cpu's) some are just better than others; as well most of the newest bios may help with fsb holes encountered with earlier versions of the bios
 
Interesting...

I just wanted to know if I could try going higher than 2000 myself.
I might just do that.
 
Originally posted by: Cheex
What kind of cooling are you using?

Also, how likely is it that the FSB holes are similar on all boards using the same chipset?
Meaning, is it likely that my ASUS 780i will have a hole round about the same place and then be all good higher up the ladder?

I'm using the new 0903 bios on it btw.
Click to expand...

I'm using the Antec 900 case. It's a VERY tight fit in there with two video cards. I had to mount the Thermalright Ultra-120 Extreme facing the top exhaust fan otherwise it wouldn't fit. I have the side fan pointing at the MCP and keeps it at about 50C, the rear fan blowing air in, and the two front 120s are also blowing in.

I highly doubt you will have the same FSB holes as me. On my board it ranged from 1850-1925. It was pretty bizarre to find that out.
 
I have a Q6600 that I previously had in there but I never tried going past 1950 once I saw there were huge holes and I wasn't feeling all that brave.

I found it considerably harder to OC with the quad core than with the duo, I know this is common knowledge, but I'm not going to touch a quad for gaming until they suck less power. I think that there was a review of quad cores OC'd like mine eating up to 300-400w.
 
haha well I don't need to run it 24/7. It stayed stable for about 13 hours which is much longer than I normally use it in a day.
 
it doesn't matter how many hours you use ur pc in a day...

system stability starts to tick its clock whenever ur pc is on and adds onto that.
i've seen systems fail after 13 hours of P95 v25.6 testing
 
Originally posted by: LOUISSSSS
it doesn't matter how many hours you use ur pc in a day...

system stability starts to tick its clock whenever ur pc is on and adds onto that.
i've seen systems fail after 13 hours of P95 v25.6 testing
Click to expand...

I know. I will do a 24 hour test just for you 🙂

Anyway, 2100MHz while stable for 6 hours is not rock solid. I think the actual upper limit of this board is around 2080-2090MHz. I have the SPP/FSB voltages maxed and I cannot even boot at 2200 MHz.

This board makes me wish I had a vapochill and an unlocked chip. Maybe for my birthday if I can convince the wife since I haven't even told her of my spending spree on THIS setup 😛
 
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