"kamikazev4" <> wrote in message
news:...
>
> So if you see my specs, you can see what I run right now. I am looking
> to upgrade to a phenom 2 x4 955. see link. for specs
> 'Newegg.com - AMD Phenom II X4 955 Black Edition Deneb 3.2GHz 4 x 512KB
> L2 Cache 6MB L3 Cache Socket AM3 125W Quad-Core Processor - Processors -
> Desktops'
> (http://www.newegg.com/Product/Produc...82E16819103674).
>
> I also am looking to continue using my 9800GTX+ for the time being with
> the option to go double or triple cards in the future. I have noticed
> that there are not many options for motherboards with the am3 socket
> style and SLI capabiltiy. except for this board...
> 'Newegg.com - ASUS M4N82 Deluxe AM3/AM2+/AM2 NVIDIA nForce 980a SLI AMD
> Motherboard - AMD Motherboards'
> (http://www.newegg.com/Product/Produc...m4n82%20deluxe)
>
> Will my 650w power supply be sufficiant enough for a double or triple
> 9800GTX+ setup. Any other advise on this setup would be greatly
> appreciated!
>
>
> --
> kamikazev4
156W 9800GTX (recommended amount by Nvidia)
125W AMD Phenom II 955 CPU
30W 12 USB ports @ 0.5 amp = 6.0 amp // amp x volts = watts // 6A x 5V
= 30W
15W hard drive x how many you have installed.
20W DVD-RW drive (under maximum load, writing)
24W for motherboard and memory (guessing)
Total: 360W (This is maximum with padding for margin of safety and would not
reflect the amount in actual use, which should be a lot lower)
You generally aren't going to be using every USB port and unlikely they will
all be pulling 0.5 amp which is the max any USB device should be using.
Video games, GPU will be loaded with work but CPU won't be, unless you are
doing video conversion in the background.
I'm thinking like 150-175W total for normal use like web browsing, about
200W, if you're hard core gaming. Keep in mind all the numbers like 156W
and 125W are padded. That's under absolute maximum load + extra for margin
of safety.
Not to mention all the power saving features built in and lot of system
either being idle or not in use, you should be more than OK with even with a
250W power supply with your rig.
Hard drives need most power at spin up, but I'm thinking GPU and CPU aren't
running at full load so you should have plenty of power at startup. Also
some hard drives like the WD Caviar Green have staggered spin up if you have
more than one hard drive which prevents them from demanding power from the
power supply all at once.
I took a look at various hard drives and they seem to operate in the range
of about 8-12W for desktop 3.5" HHD. They will give you slightly different
numbers depending on selling point ("green" or environment-friendly
literature might give lower power consumption quote compared to recommended
operating quote... which reflect what the writer feels the amount of power
necessary for proper operating + a little more to error on the side of
having more than sufficient power.)
Western Digital Caviar Green 2GB 7.4W read/write operation
Western Digital Caviar Black 1TB 8.4W read/write operation
Seagate Barracuda 7200.11 1TB 10.6-11.6W seek power
In my opinion, fully loaded with 3 9800GTX, I think even 500W would be more
than sufficient.
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