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DFI Expert fried another cpu? NCSA this is 4 U 2

post #1 of 29
Thread Starter 
Hey, I just had some questions about the DFI Expert board. I've heard the horror stories of this mobo fring processors, but it seemed to be an isolated issue and I hadn't heard much about it since the board first came out. I checked DFI's site and they have a new bios out... and the word on DFI street seems to be that it isn't really an issue anymore. With this in mind I went a head and ordered one and an opty 148. (be here tomorrow!)

But I saw a post yesterday that ncsa had his 146 fried by his mobo.

I was hoping that ncsa and anyone else w/ this board or who knows someone who has experienced this issue or something similar could post with some background information.

what bios were you using? what board revision? what RAM? what were your voltages... stuff like that. I have also heard that it is caused by high memory voltages and low cpu voltages... but I'd like to see some results from people and maybe we can put 2 and 2 together.
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post #2 of 29
I haven't had any problems like that and I bought my mobo back in December. DFI started testing them so I would just go right ahead, you'll love the board, great layout and very easy to use. My current vcore is 1.612 and temps are around 29 idle and my BH-5 is sucking up 3.8 volts just the way it likes it. I am still using the stock bois, to lazy to flash. As to one point you made I had the vdimm at 3.8 and vcore st stock for a while to burn in and saw no issues, the only problem which seems to to common is the first time you set everything up the board is picky about ram untill you have the Dram setting all set. If you have this problem use the orange slot furtherest from the socket and use only 1 stick.
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post #3 of 29
Thread Starter 
thanks for the info! anyone else? I really hope ncsa can add his experience in this thread!
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post #4 of 29
Welll I havent seen NCSA around for awhile but I know he is very active on the DFI Street forums, if you really want his input try sending him a pm there. Maybe he still lurks in the shadows though.
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post #5 of 29
I just had a problem with my DFI board and had to RMA it. It wouldn't boot at all. Just a black screen. I had my at Vcore 1.35 & 3.6V on my OCZ VX 4000.
    
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post #6 of 29
Thread Starter 
Quote:
Originally Posted by Snerp
I just had a problem with my DFI board and had to RMA it. It wouldn't boot at all. Just a black screen. I had my at Vcore 1.35 & 3.6V on my OCZ VX 4000.
that could be the cold boot problem I've heard about w/ OCZ vx RAM
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post #7 of 29
Thread Starter 
Quote:
Originally Posted by Marshall82
Welll I havent seen NCSA around for awhile but I know he is very active on the DFI Street forums, if you really want his input try sending him a pm there. Maybe he still lurks in the shadows though.

thanks, I just tried him there. I tried to pm him here, but ti didn't work... I didn't realize he is on the dfi street forums as I'm new there. thanks!
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post #8 of 29
The issue with the fried cpu is as follows:

There is a little voltage control thingy that goes crazy everytime the battery is removed from the board. It causes the system to loose the Special VID at Startup control and it sends the full amount of voltage to the cpu. It has been measured as almost 3v. Double cores and FX chips are more suceptible to fry than single core A64s.

It has been posted by DFI that updating to BIOS 12/07 fixes this issue.

Also, there are a few instances that special VID at startup control is lost when resuming from S3. Bios 12/07 addresses this too.

NCSA was running 12/07... if I recall correctly. Go fig. But it seems that Opterons are as delicate as X2 and FX chips.

SO the moral of the story is: update to 12/07 (recommended by DFI tech support, and the expert design engineer), disable S3, and if you have to up your voltage, use high voltage/low Special VID combination. And avoind removing battery, except for deep CMOS reset.
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post #9 of 29
Go with the Asus A8N32. Its faster stock than the DFI and overclock is very close (Anandtech actually was able to OC a 4000+ higher on the Asus than on the DFI).

SLI - NVIDIA 81.85 Drivers, 6.82 Platform
GameDFI nF4 SLI-DR (2 x8)Asus A8N32-SLI (2 x16)% Increase
Aquamark 386332878131.7
Far Cry74.378.35.4
Doom 39595.91
Splinter Cell-Chaos Theory7677.72.2
Quake 494.5102.18
F.E.A.R.74808.1

Using the same video drivers and components, the Asus Dual x16 was 1% to 8.1% faster than the
DFI Dual 8x. These increases are small enough that we took a closer look at single card performance
to see if the real difference was Dual x16 or something else.

Single Video - NVIDIA 81.85 Drivers, 6.82 Platform
GameDFI nF4 SLI-DR (1 x16)Asus A8N32-SLI (1 x16)% Increase
Aquamark 382608840891.8
Far Cry47.347.50.4
Doom 353.353.30
Splinter Cell-Chaos Theory40.547.517.3
Quake 470.178.311.7
F.E.A.R.495614.3

In single video card mode, we were completely surprised to find performance increases on the Asus
as high as 17.3%. This is an even higher performance increase than SLI mode, but in this case, both
the DFI and Asus are running a single card in x16 mode. This is an even higher performance increase
than SLI mode, but in this case, both the DFI and Asus are running a single card in x16 mode.
How is this possible? We re-ran benches several times and attained the same results. It is also
interesting that while there is almost no increase in single mode in "older" games, the newest
and most demanding titles show the biggest increases.

http://www.anandtech.com/mb/showdoc.aspx?i=2589&p=10

Taken from Anandtech article Nov 6 2005


Edit: Sorry if that didn't format correctly. I added the excel spreadsheet version.
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post #10 of 29
Quote:
Originally Posted by Robilar
Go with the Asus A8N32. Its faster stock than the DFI and overclock is very close (Anandtech actually was able to OC a 4000+ higher on the Asus than on the DFI).

SLI - NVIDIA 81.85 Drivers, 6.82 Platform
GameDFI nF4 SLI-DR (2 x8)Asus A8N32-SLI (2 x16)% Increase
Aquamark 386332878131.7
Far Cry74.378.35.4
Doom 39595.91
Splinter Cell-Chaos Theory7677.72.2
Quake 494.5102.18
F.E.A.R.74808.1

Using the same video drivers and components, the Asus Dual x16 was 1% to 8.1% faster than the
DFI Dual 8x. These increases are small enough that we took a closer look at single card performance
to see if the real difference was Dual x16 or something else.

Single Video - NVIDIA 81.85 Drivers, 6.82 Platform
GameDFI nF4 SLI-DR (1 x16)Asus A8N32-SLI (1 x16)% Increase
Aquamark 382608840891.8
Far Cry47.347.50.4
Doom 353.353.30
Splinter Cell-Chaos Theory40.547.517.3
Quake 470.178.311.7
F.E.A.R.495614.3

In single video card mode, we were completely surprised to find performance increases on the Asus
as high as 17.3%. This is an even higher performance increase than SLI mode, but in this case, both
the DFI and Asus are running a single card in x16 mode. This is an even higher performance increase
than SLI mode, but in this case, both the DFI and Asus are running a single card in x16 mode.
How is this possible? We re-ran benches several times and attained the same results. It is also
interesting that while there is almost no increase in single mode in "older" games, the newest
and most demanding titles show the biggest increases.

http://www.anandtech.com/mb/showdoc.aspx?i=2589&p=10

Taken from Anandtech article Nov 6 2005


Edit: Sorry if that didn't format correctly. I added the excel spreadsheet version.
Yeah but that is the SLI-DR he is getting the expert.
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