Hi folks, I have a Dell optiplex PC here with 305W it says, but I hear many people say that is equal to about 400W for other power supplies. I wonder if it is enough for a GTS250. Here is my system specs.
Intel Core 2 Duo E8400(3.0GHz, 6M, VT, 1333MHz FSB) EM64T (64bit windows or linux supported) DELL Cooling technology, extremely Quite 2GB DDR2 800MHZ High Speed RAM Dual Channel (2 Empty Slots available for upgrade) 250Gb SATA 7200rpm 8.5ms Hard Drive Intel Integrated Video GMA4500 (Intel Q45 Express) 16x SATA Double Layer DVD-/+R/RW Gigabit Lan 10/100/1000 DVI (Digital) Adapter Card
As you can see, i really need to add a decent video card, and something higher than a 9600gt.
Also, since the case is the minitower version (ATX version), am I able to change my PSU? I have heard conflicting posts on if it was possible.
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More aboutdell 305w limits
The general rule of thumb is a high quality 500 to 550 watt power supply with sufficient current (amps) on the 12 volt rail(s) can easily power a system with any single video card made. A high quality 700 to 750 watt power supply with sufficient current (amps) on the 12 volt rail(s) can power a system with two video cards operating in dual mode. There are a few exceptions like the new ATI Radeon HD 5XXX series cards which use less power due to their energy efficiency.
A high quality 500 to 550 watt psu will have a +12 volt rail rated at 40 amps. A high quality 700 to 750 watt psu will have a +12 volt rail rated at 60 amps.
Corsair, PC Power & Cooling, and Seasonic are some of the brands that have a reputation for high quality power supplies that consistently earn high marks in technical reviews. They are reliable, stable, and come with a 5 year warranty. Some of the newer models come with a 7 year warranty. Lately we've been seeing a few other brands offering some high quality units. An example would be the Antec Earthwatts series which is an improvement over Antec’s older series psu’s.
am I able to change my PSU?
Yes, smaller units like the Antec EA 380/430/500 fit better ( 140 mm depth )