AMD Phenom 9950 to dissipate 140W - Page 2

jmke · 15th April 2008, 22:52

Quote:

After placing an additional case fan over the PWM/MOSFET area, our board completed three hours of OCCT, two hours of our Crysis demo looping, and over five hours of PCMark Vantage looping. We only had one shutdown of OCCT and that was at the one hour, six minute mark, but it has not occurred again.

Quote:

We have not noticed any stability or shutdown problems to date with additional cooling over the PWM/MOSFET area

seems that cooling was the issue, and testing outside a case the cause, inside a case those mobo's will stand a much better chance than outside

16th April 2008, 06:47

Hot running or dusty case, or high ambient temp would still cause problems! They still had one crash even with the fan, not good. Also that was with the "improved" Gigabyte board.

geoffrey · 16th April 2008, 15:42

A higher number of phase nodes will make each node run cooler, but it does not directly mean that more phase nodes is better in providing more current.
The boards tested at Anand are brought to the edge of stability just so to remain cheaper? They should have added heatsinks, how many 100€ Intel boards come heatsink-less?

Just in case, AMD brought out a high power CPU but it is not directly their fault that the lower end boards are being killed on sight.

geoffrey · 3rd May 2008, 11:14

Quote:

As a recap, the critical aspect of running a 9850BE at stock speeds on current 780G products centers on the cooling of the PWM circuitry. Each and every manufacturer along with AMD agreed that cooling the MOSFETS properly was critical to the successful operation of the board at stock or overclocked speeds with the 9850BE - and to some degree, the 6400+ X2.

http://www.anandtech.com/mb/showdoc.aspx?i=3299&p=1

jmke · 3rd May 2008, 12:06

psssst

AMD 780G - The Three Amigos and a 9850BE

3rd May 2008, 12:06	#15
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	psssst AMD 780G - The Three Amigos and a 9850BE __________________

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16th April 2008, 06:47	#12
Kougar Posts: n/a	Hot running or dusty case, or high ambient temp would still cause problems! They still had one crash even with the fan, not good. Also that was with the "improved" Gigabyte board.

16th April 2008, 15:42	#13
geoffrey [M] Reviewer Join Date: Nov 2004 Posts: 4,127	A higher number of phase nodes will make each node run cooler, but it does not directly mean that more phase nodes is better in providing more current. The boards tested at Anand are brought to the edge of stability just so to remain cheaper? They should have added heatsinks, how many 100€ Intel boards come heatsink-less? Just in case, AMD brought out a high power CPU but it is not directly their fault that the lower end boards are being killed on sight.