DFI Admits 5Volt Vdimm Problem with DFI Nforce 4 Ultra/D/DR SLI models!

Sidney · 27th May 2005, 06:43

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 to the
ram from 3.3 volts to 5 volts. This gives users the option to go above 3.2
volts in the bios.

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

If you own 1 of these boards, and have the jumper set to 5 volts, change it now
back to the 3.3 volt setting.

Link to thread:
http://www.bleedinedge.com/forum/sho...0270#post90270

Sidney · 27th May 2005, 07:41

I am wondering whether the issue is setting the jumper to the high voltage or setting it to >4 Volt afterward. You could set to the lowest 3.3 or 3.4; does this have the same effect?

Scary warning to folks must run on hight voltage.

27th May 2005, 08:00

What does that mean exactly?

If i want ot set the RAM voltage to 3.6V will I be OK?

jmke · 27th May 2005, 08:18

you should not set your memory >4v. period.

27th May 2005, 08:23

That I know. But will it be ok if i never exceed 3.6 ?

jmke · 27th May 2005, 08:27

have not read any bad experiences about this ; www.xtremesystems.org should be a good source that

27th May 2005, 08:32

did a search but nothing about frying your RAM on DFI boards came up. I'll be watching that space though:excellent

27th May 2005, 14:21

luckely you can use a pin trick + PSU with variable lines to achieve 3.2Vdimm+ values without compromising stability .
The trick is also on XS if your interested .

jort · 27th May 2005, 15:13

when i got the dfi lanparty here with some ocz vx mem, the mobo fried 3 pins of the memory sticks.
there are some people on xs that has the same situation

never got the mem above 3.5V

27th May 2005, 15:26

Quote:

Originally posted by jmke
you should not set your memory >4v. period.

with some very good airflow and only for benching, your ram will survive!

note that i'm talking about the good chips ( winbond )

27th May 2005, 06:43	#1
Sidney Member Join Date: Mar 2004 Posts: 15,738	URGENT - DFI Admits 5Volt Vdimm Problem!!! 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 to the ram from 3.3 volts to 5 volts. This gives users the option to go above 3.2 volts in the bios. 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 is very disturbing. Mr Wong basically informed me that DFI R&D in Taiwan know about this issue and have been testing this setting with different major branded ram, and that the 5 volt setting is causing and i quote "Major Issues". If you own 1 of these boards, and have the jumper set to 5 volts, change it now back to the 3.3 volt setting. Link to thread: http://www.bleedinedge.com/forum/sho...0270#post90270 __________________ lazyman Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II

27th May 2005, 07:41	#2
Sidney Member Join Date: Mar 2004 Posts: 15,738	I am wondering whether the issue is setting the jumper to the high voltage or setting it to >4 Volt afterward. You could set to the lowest 3.3 or 3.4; does this have the same effect? Scary warning to folks must run on hight voltage. __________________ lazyman Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II

27th May 2005, 08:18	#4
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	you should not set your memory >4v. period. __________________

27th May 2005, 08:27	#6
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	have not read any bad experiences about this ; www.xtremesystems.org should be a good source that __________________

27th May 2005, 15:13	#9
jort Member Join Date: Jun 2004 Location: mechelen(belgium) Posts: 2,037	when i got the dfi lanparty here with some ocz vx mem, the mobo fried 3 pins of the memory sticks. there are some people on xs that has the same situation never got the mem above 3.5V __________________ watercooling, chilled water,direct phase change, cascade, custom modding

27th May 2005, 08:00	#3
Faiakes Posts: n/a	What does that mean exactly? If i want ot set the RAM voltage to 3.6V will I be OK?

27th May 2005, 08:23	#5
Faiakes Posts: n/a	That I know. But will it be ok if i never exceed 3.6 ?

27th May 2005, 08:32	#7
Faiakes Posts: n/a	did a search but nothing about frying your RAM on DFI boards came up. I'll be watching that space though:excellent

27th May 2005, 14:21	#8
xpr-k Posts: n/a	luckely you can use a pin trick + PSU with variable lines to achieve 3.2Vdimm+ values without compromising stability . The trick is also on XS if your interested .

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