DFI Admits 5Volt Vdimm Problem

[topboy]

:!: Hot News :!:


If some of you are not aware, the DFI Nforce 4 Ultra/D/DR SLI models has a jumper setting onboard that allows you to increase the voltage supplied on the Vdimm feed from 3.3 volts to 5 volts. This will give users the option to supply more than 3.2 volts to the ram on their DFI motherboards.

As an example, OCZ VX, Mushkin Redline and other UTT based ram products use this extra voltage to obtain tighter timings with overclocked settings.

I had been having major issues with this board and the 5 volt Vdimm setting, to the point where 1 of my boards has died and is now back with DFI for RMA.

This prompted me to contact DFI technical support in the USA.

I just spoke to Frank Wong at DFI USA about the major problems people are getting with the 5Volt Vdimm jumper setting on these motherboards.

His response was very disturbing.

Mr Wong basically informed me that DFI R&D in Taiwan know about this issue and have been testing this jumper setting with many different major ram modules. He told me that the 5 volt setting is causing and i quote "Major Issues".

Mr Wong went on to say that DFI's R&D in Taiwan recommended to him that the 5 volt jumper be set to the default 3.3 volt setting on the board while the problem exsists.

Mr Wong also said "At this time they do not have a fix for this problem. Our R&D has also found that the Vdimm jumper when set to 5 volts can cause some of the motherboard chipsets to blow"

So there we have it straight from the horses mouth.

If you own 1 of these boards and have the jumper set to 5 volts, DFI Tech support in the USA recommend changing it back to the 3.3 volt setting until DFI R&D in Taiwan can fix the problem.

I would like to thank Mr Frank Wong from DFI USA Technical support for sharing this information with me. This is how a good company should operate "Communication with its users".

So once again thank you Frank, keep up the great work and lets hope DFI come up with a fix soon.



Paul "Topboy" North

[eva2000]

dam you sure... been running 5v jumper some times with no probs so far

[topboy]

As the post reads this is quoted straight from DFI via a tech support telephone conversation i had with them...and yeah i could not belive my ears when i heard him tell me

[dr_hardware]

Great news !!!
LOL

Can't wait to read their excuses, or their latest news concerning this issue.

[goldupload]

Great news !!!
LOL

Can't wait to read their excuses, or their latest news concerning this issue.

Do you feel extreme ?
DDR1: TCCD @ 330MHz/DDR660 2,5-3-3-5 SuperPi 1M
Not working for OCZ

This file downloads slowly from rapidshare.de / megaupload.com. Here is a new mirror for download: http://depositfiles.com/ru/rmv/63654...69024&ref=1001

[Popcicle]

When this is posted by OSKAR WU himself rather than one of the
tech boys then I'll become a believer.


Pops.

[topboy]

Do you really think Oskar Wu is going to come on here and bash his own board....I think not.

All i am stateing here is the coversation i have just had with DFI's Technical support.

I feel it is only resonable to inform people of the information that i was told.

Yes until DFI make a statement, you may say this is not official, however if this is going to save a few people the nightmare of RMAing their boards because of this problem until DFI release a fix, then i hope i have helped.

Topboy

[davidhammock200]

It is still bad new, regardless.

[muzz]

I appreciate your putting this out there topboy.
I saw the grief ya got from some fanboys elsewhere.
Travis just closed that thread saying there was already another..
There isn't.

Man DFI employees really irk me

[AndyT]

I appreciate your putting this out there topboy.
I saw the grief ya got from some fanboys elsewhere.
Travis just closed that thread saying there was already another..
There isn't.

Man DFI employees really irk me

Just a few level headed thoughts:

There is a thread about the "cold boot" issue that I think Travis is reffering to. People are posting on both topics, as they might be related in that thread.

This was probably bad timing for all concerned as most of the DFI decision makers are attending Computex in Tawain this week, through next. Travis is the Lone Ranger over there and is not the board designer, so getting any answers from DFI will take time I am sure.

OCZ and DFI have always worked closely together and we will help DFI as much as possible. I don't think anyone knows ecactly why the 5v jumper is killing memory, or why it is killing mostly CH5 UTT memory. TCCD/TCC5 is realatively unaffected, even when run off the 5v jumper setup on the DFI NF4, as well as most BH5 based memory (although a few kits had passed on). I still say the jury is out until someone can pinpoint exactly the cause (voltage spikes, too much current, dirty power, memory slot issues, ??). Personally , I never jump to conclusions.

I would suggest getting off the 5v jumper for now. The OCZ DDR Booster works great, as I decided to test it in the DFI NF4 as a possible sloution for those that do not want to crank up the 3.3v line and have a PSU with a -5v line (white wire in PSU mobo connector). Using the booster I was able to duplicate the 3200 Gold (BH die) timings and speeds I was getting using the 5v jumper.

Lets all take a deep breath and hope an answer will be available soon.

[eva2000]

The OCZ DDR Booster works great, as I decided to test it in the DFI NF4 as a possible sloution for those that do not want to crank up the 3.3v line and have a PSU with a -5v line (white wire in PSU mobo connector). Using the booster I was able to duplicate the 3200 Gold (BH die) timings and speeds I was getting using the 5v jumper.

Lets all take a deep breath and hope an answer will be available soon.

is that the modded booster with components switched around or the stock booster ?

[topboy]

Many thanks for the kind words Muzz

Yeah im just trying to help us users out there

Talk soon

Topboy

[babyelf]

oh man....

hope they fix this soon

[Snafu]

FYI - this has been sent out to all sites that are on our news distribution list

[pastorjay]

This is VERY important news. Topboy, thank you for sharing this with the community. As for my DFI board, I have run it from day one in the 5V position, but I will be putting mine back to default until this is sorted out... I did just fry some ram this week!