Newsgroup: it.comp.hardware.video-3d
Titolo: nVidia ritratta ancora sui consumi...

Dopo le notizie degli scorsi giorni sulla possibilità di usare un solo 
Molex... ora non è più necssario avere un alimentatore da 480W.
******
Nvidia to lower GeForce 6800 Ultra power supply spec
Graphics company ready to embrace friendlier, less-expensive 350W power 
supply recommendation for upcoming GeForce 6800 Ultra GPU.
Ever since announcing its new next-generation GeForce 6800 Ultra GPU 
last month, graphics company Nvidia has received a large amount of 
criticism for its recommendation of a 480W power supply for use with its 
newest GPU. Since most of today’s computer systems only ship with power 
supplies in the 300-450W range, the need for a 480W power supply upgrade 
can add a significant add-on cost for gamers interested in buying a 
GeForce 6800 Ultra video card.
We caught up with Ujesh Desai, General Manager of Desktop GPUs for 
Nvidia, for a quick Q&A and asked him if he could clarify the GeForce 
6800 Ultra’s 480W power requirement situation for us. It turns out that 
Nvidia’s newest GPU isn't as power hungry as previously thought.
GameSpot: What are the reasons behind the 480W power supply 
recommendation for the GeForce 6800 Ultra?
Ujesh Desai: We have to spec our products for the absolute worst case, 
not the best. Marginal power supplies and poorly ventilated cases must 
be taken in to account. We are traditionally over-cautious about our 
minimum specifications, and this is no exception. Now that we have had 
more time with the GPU we are getting a better feel for its 
capabilities, tolerances and resource requirements.
The reason we initially spec'ed out 480W was because the GeForce 6800 
Ultra was targeted at the Enthusiast. These folks tend to push their 
systems to the max. That means overclocking the GPU, using the fastest 
CPU on the market, and also typically using multiple peripherals. For 
these folks a 480 Watt power supply and a second power dongle on the 
graphics card provide an ideal overclocking solution. For people that do 
not want to overclock, the 480W power supply and second power connector 
combination is overkill.
GS: Since a 480W power supply is “overkill,” what kind of sub-480W power 
supply can support a GeForce 6800 Ultra running at normal clock speeds?
UD: A good quality 350 Watt power supply with a sufficient 12V rail pull 
can support the 6800 Ultra standard clocks of 400/550. A lot of 
reviewers have already shown that they are running on 350 Watt power 
supplies with no problems. Overclockers will still want the big power 
supply and will want to connect both molex connectors. We are putting 
production tests in our manufacturing line to ensure this [new 350W 
requirement] is the case and will be lowering the spec.
GS: Is Nvidia working on defining more specific power supply 
recommendations or even going as far as "qualifying" specific power 
supplies to replace the blanket 480W recommendation?
UD As long as the power supply design is robust, we’ve seen that 
standard 350 Watt power supplies are sufficient for running the GeForce 
6800 Ultra. 350 Watt will be the new specification. Our add-in-card 
partners will also help with the testing, as different card designs can 
affect power requirements.
GS: Thanks for clearing the situation up for us, Ujesh!
******
Fonte:
http://www.gamespot.com/news/2004/05/10/news_6096837.html
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C'era da immaginarselo...;-)
Un buon ali da 350W insomma dovrebbe essere sufficiente... amenochè
uno non abbia otto HD :))
Saluti

 uno non abbia otto HD :))
E' però da vedere se ci si possa fidare :o|
A quanto pare con 1 solo Molex le GF5600U sono instabili, con un 350 
1HD, 1 lettore CD/DVD e annessi penso possa reggere... ma forse si è al 
limite.



wrote:

Io penso, invece, che possa essere insufficiente anche un buon 350W.
Visto e considerato che un alimentatore da 450-500W costa veramente
poco, penso che è inutile rischiare qualcosa dopo aver acquistato 500
euro di scheda video.
Per esempio, ho tenuto per un po' di tempo un alimentatore Perdoon da
500W (22A sui +12V e 45A sui +5V), pagato 31 euro, che mi reggeva
l'Athlon XP @2.6Ghz a 2.1V (per prova), con la Radeon 9800Pro a
420/375 (oltre a 3 Hd, DVD, masterizzatore, 512Mb e scheda TV), e le
tensioni erano buone (-11.70V e +4.85V in full load da MBM) 
Imho, non credo che un potenziale acquirente di 6800 Ultra si tiri
indietro per la "paura" di un cambio d'alimentatore.
Ciao Mariop


Neppure io se per quello...;-))
Ciao