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My eVGA 780i A1 = CRAP...NEED HELP

1259 Views 22 Replies 5 Participants Last post by  c00lkatz
Situation:
So i bought this 780i A1 a few months ago from a OCN member and the board arrived DOA even though it was a fresh RMA, so i called eVGA RMA'd the board and they sent me a working one. Until last week i didn't have an after market CPU cooler so i hadn't started to over clock. Now after starting to overclock it has been nothing but hell. Basically at 3.8ghz and higher nothing will stay stable, i have done vdroop mod and have zero vdroop now. After doing the vdroop mod it seemed to help at first but then once i was trying to hit 4ghz and higher its not help. I mean its weird i had my CPU at 3.8ghz which i thought was stable after running PRIME 95 for 12+ hours with zero issues, but then i restart my computer and it crashes 5 hours later. I have spent DAYS trying to get this motherboard stable and it just seems that this motherboard is defective or something. I have trying playing around with the CPU FSB the Lanes and nForce SPP with no luck and the cpu multiplier. Please guys im open to any suggestions, the computer is my sig rig.

Voltages
CPU FSB: 1.3v (1.4v - 1600 QDR+)
nForce SPP: 1.4v ( 1.45v - 1700 QDR+)
MCP: 1.525v
HT: 1.25v
Aux: 1.5v
Lane 0: 70
Lane 1: 70
Lane 2: 70
Lane 3: 70

Bios Features Disabled
C1E
Execute Disable Bit
Virtulization Technology

CPU Speed/ Bios Voltage/ CPU-Z
3.17/1.25/1.2 ~ Stable
3.325/1.25/1.2 ~ Stable
3.526/1.25/1.2 ~ Stable
3.7/1.25/1.2 ~ Stable
3.8/1.26250/1.24 ~ Stable in PRIME 95 crashes when not in PRIME 95 after a few hours
4.0/1.3250/1.304 ~ Stable In PRIME 95 crashes when not in PRIME 95 after a few hours

If you guys need any more information please just ask and ill do my best to get it. Thanks in advance.
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Have you lowered your "LDT" multi or whatever it is called? It is likely at 5 for stock settings, and you probably should have it set at 2-3.
Quote:

Originally Posted by Aaron_Henderson View Post
Have you lowered your "LDT" multi or whatever it is called? It is likely at 5 for stock settings, and you probably should have it set at 2-3.
Where is that option?
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Not sure if it will be called the same thing in the EVGA bios, as I'm on ASUS 780i, but @ stock it is as follows -

LDT Multi x FSB = LDT frequency
so - 5 x 200 = 1000MHz

You should try and keep it as close to 1000MHz as possible, at least until that is eliminated as the culprit setting. So, if you are at 400 FSB (1600), you would probably be fine at 3, for 3 x 400 = 1200MHz LDT, which should be fine. I don't think many of the 780i boards can get too much higher than 400-450 FSB.

***EDIT***

Found this for you -

Overclocking

Spread Spectrum Control = All set to disabled
CPU Internal Thermal Control = Enabled
Limit CPUID MaxVal = Disabled
Enhanced C1 (C1E) = Disabled
Execute Disable Bit = Enabled
Virtualization Technology = Enabled
CPU Multiplier = 9 X
Enhanced Intel SpeedStep Tech = Disabled
LDT Frequency = 5x ---------------------------- THIS SETTING HERE!

CPU Core 2 - Enabled
CPU Core 3 - Enabled
CPU Core 4 - Enabled
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the last 3 evga boards i did builds and overclocks on all had outdated bios. i had crashing problems as well, all three with q6600's though. on a 680i it even changed the multiplier from 8 to 9. that's a really big difference


update your bios, it fixed all of my problems.

edit: pretty sure those instructions above are for a quad, im not sure if its the same for a duo though.
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Quote:


Originally Posted by Greensystemsgo
View Post

edit: pretty sure those instructions above are for a quad, im not sure if its the same for a duo though.

Yes, but I only showed the settings so he can see what I am talking about when I say LDT multi.
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4
Quote:


Originally Posted by Greensystemsgo
View Post

the last 3 evga boards i did builds and overclocks on all had outdated bios. i had crashing problems as well, all three with q6600's though. on a 680i it even changed the multiplier from 8 to 9. that's a really big difference


update your bios, it fixed all of my problems.

edit: pretty sure those instructions above are for a quad, im not sure if its the same for a duo though.

im already on the P08 bios.

Quote:


Originally Posted by Aaron_Henderson
View Post

***EDIT***

Found this for you -

Overclocking

Spread Spectrum Control = All set to disabled
CPU Internal Thermal Control = Enabled
Limit CPUID MaxVal = Disabled
Enhanced C1 (C1E) = Disabled
Execute Disable Bit = Enabled
Virtualization Technology = Enabled
CPU Multiplier = 9 X
Enhanced Intel SpeedStep Tech = Disabled
LDT Frequency = 5x ---------------------------- THIS SETTING HERE!

CPU Core 2 - Enabled
CPU Core 3 - Enabled
CPU Core 4 - Enabled

Thanks, now i need some more people to verify these because in a bunch of threads ive seen people have the virtual / execute/ both disabled.

Quote:


Originally Posted by Aaron_Henderson
View Post

Yes, but I only showed the settings so he can see what I am talking about when I say LDT multi.

where in the bios is LDT?
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Quote:


Originally Posted by RAFFY
View Post

im already on the P08 bios.

Thanks, now i need some more people to verify these because in a bunch of threads ive seen people have the virtual / execute/ both disabled.

Ignore the settings, I just used that to point out where the LDT setting is. Just change the LDT to 2 or 3 and ignore the rest! I found this off another site about the EVGA 780i, so it should be under "overclocking" I think. Again, I don't have the EVGA, just drawing from my 780i experience as I also found it a hassle to OC on.
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ill agree that the 780i is rough. ive heard of about 3 friends now having troubles ocing quads on it, but not q6600, higher series weird ones.
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You shouldn't need to touch the LTD freq. If you want to play with it, it is found in advanced>clock setting. You should be able to run pretty close to 2000 FSB. I would also leave your multi at stock since it potentially raises NBCC.

You should also be fine leaving te GTL lanes on auto with a dual core. If you do play with them this is what I've read. On a dual core, lanes 0 and 2 are linked to core 0 and lanes 1 and 4 and linked to core 1. If core 0 is the culprit for errors raise lane 0 and 2 to 50 and test. Then continue to raise them +5.

Also, make sure you have your ram under clocked while you and testing for a stable CPU OC.
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Quote:


Originally Posted by PizzaMan
View Post

You shouldn't need to touch the LTD freq. If you want to play with it, it is found in advanced>clock setting. You should be able to run pretty close to 2000 FSB. I would also leave your multi at stock since it potentially raises NBCC.

You should also be fine leaving te GTL lanes on auto with a dual core. If you do play with them this is what I've read. On a dual core, lanes 0 and 2 are linked to core 0 and lanes 1 and 4 and linked to core 1. If core 0 is the culprit for errors raise lane 0 and 2 to 50 and test. Then continue to raise them +5.

Also, make sure you have your ram under clocked while you and testing for a stable CPU OC.

ya my ram is unlinked and actually running at 800mhz instead of its 1100mhz stock. this board is just being so damn frustrating compared to when i had a 680i a1. so are u saying to leave my lanes at 0 and if i have a problem raise what ever core it is to 50 and go from there?
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I still say it is LDT multi...keep us informed when you get it figured out. If left at 5 multi, 400 FSB would be 2000 MHz LDT, pushing any further will most definetly cause instability. Most board can do 2000MHz, not all, and it is recommended to stay as close to stock until everything else is stable. Then you can see if your board can do 2000MHz LDT.
Quote:


Originally Posted by Aaron_Henderson
View Post

I still say it is LDT multi...keep us informed when you get it figured out.

Most likely not. Take the 750i cousin. It's basicly the same NB paired with a different SB. It's able to run 2000 FSB and doesn't even give you the option to change LDT freq. He prbly just needs some more vcore.
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Quote:


Originally Posted by PizzaMan
View Post

Most likely not. Take the 750i cousin. It's basicly the same NB paired with a different SB. It's able to run 2000 FSB and doesn't even give you the option to change LDT freq. He prbly just needs some more vcore.

honestly im ready to throw this board out the window, but at the same time i dont want to spend money on a new board.
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Quote:


Originally Posted by RAFFY
View Post

honestly im ready to throw this board out the window, but at the same time i dont want to spend money on a new board.

Dude, I can link you to a few threads a few weeks ago of mine with the same thoughts on it. Once I figured the board out, I can reset CMOS, boot and have all my BIOS settings set in a minute or so, and it boots everytime. Just had to get used to what it likes and doesn't. Give me a sec, and I'll post a link to my frustrations...

You can tell how frustrated I am by the "tone" of a few of my posts

http://www.overclock.net/intel-mothe...t-premium.html

http://www.overclock.net/intel-mothe...ail-stock.html

I was SO close to throwing in the towel with this board, but I'm glad I perservered and I really like it now.
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Up the vcore. You can go up to 1.3625V actual (in CPU-Z under load) 100% safe, and some run up to 1.40-1.45V. You're only running 1.30V actual it seems. Not every chip is going to overclock the same. Perhaps your chip just needs a little more vcore @ 4.00GHz than some others. There are some running 1.36-1.40V just to get 4.00GHz, and others can't even reach 4.00GHz with massive amounts of vcore. It all depends on the chip.
Quote:


Originally Posted by PizzaMan
View Post

Most likely not. Take the 750i cousin. It's basicly the same NB paired with a different SB. It's able to run 2000 FSB and doesn't even give you the option to change LDT freq. He prbly just needs some more vcore.

Could be, but with MY 780i board I need to lower the multi to maximize FSB. I have to run 4x multi to be stable at 400 FSB. If I up to 5, it boots but doesn't make it through post, regardless of voltages set. Side note - I use max vcore until I find my OC, then reduce vcore as much as I can while still being stable.
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this is odd, for some reason HT Spread Spectrum was enabled, i think might be my problem. it suppose to be disabled by default.
I thought it was enabled by default as part of FCC regulation.
Quote:

Originally Posted by PizzaMan View Post
I thought it was enabled by default as part of FCC regulation.
in my owners manual it says "Disabled", hopefully this will solve the issue. i can't believe i over looked this after checking my bios TONS of times, lol.
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