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Upgrading computer, what W PSU do I need?

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March 23, 2010 11:10:16 PM

Hi, Im upgrading some parts and wondering what Wattage the PSU would require, basicly if the new specs will require more oomph than my old and if possible a recommended PSU for the specs listed.
(Cant remember what my current PSU is but everything has been stable and I'll look it up before installing any components anyhow.)

Current specs:
Mainboard : MICRO-STAR INTERNATIONAL CO.,LTD P35 Neo-F
Processor : Intel Core 2 Duo E6750 @ 2666 MHz (stock cooler, slightly OC'ed to 350 fsb)
Physical Memory : 4096 MB (2 x 2048 DDR2-SDRAM )
Video Card : NVIDIA GeForce 8800 GT 512Mb
Hard Disk : SAMSUNG (250 GB)
DVD-Rom Drive : TSSTcorp CDDVDW SH-S202H ATA Device
DVD-Rom Drive : AHONCZM YFO9QVC96 SCSI CdRom Device

Upcoming specs:
Mainboard : Asus M4A785D-M PRO
Processor : AMD Phenom2 X4 965 3,4GHz Black Edition 125W
CPU cooler: Corsair Cooling Hydro H50 CPU-cooler
Physical Memory : 4096 MB (2 x 2048 DDR2-SDRAM )
Video Card : NVIDIA GeForce 8800 GT, however I might upgrade to a 5770.
Hard Disk : SAMSUNG (250 GB)
DVD-Rom Drive : TSSTcorp CDDVDW SH-S202H ATA Device
DVD-Rom Drive : AHONCZM YFO9QVC96 SCSI CdRom Device

More about : upgrading computer psu

a b ) Power supply
March 23, 2010 11:28:05 PM

Well without knowing what your old PSU is its hard to tell you if its enough the Phenom II 965 uses about double the power of a E6750. I would recommend having at least a 450 watt PSU to run that system.

CORSAIR CMPSU-450VX 450W ATX12V 69.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


And if i may add a little input you can ignore it if you like but the H50 cooler isnt that great of a liquid system a quality air cooler will be just as good and way more reliable water coolers can be very unreliable and could cost you extra cash in burnt out components when it fails.
March 23, 2010 11:45:48 PM

Okay, I ordered the h50 because it seems to be good when you're often moving the case, unlike a lot of the aircoolers I've seen.
Any recommendations on that? Bah, what to do, what to do..
Silent + stable locking down on the cpu so it doesn't fall off during moving, if that's possible :D 
Related resources
a c 248 ) Power supply
March 24, 2010 12:36:26 AM

Here are the ATI recommended power supply requirements for the ATI Radeon HD 5770 and 5750 video cards:


450 Watt or greater power supply with one 75 watt, 6-pin PCI Express® power connector recommended

600 Watt or greater power supply with two 75 watt, 6-pin PCI Express® power connectors for ATI CrossFireX™ technology in dual mode.

The recommendations are for an entire pc system..

Corsair and Seasonic are two 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. One example would be the Antec Earthwatts and Antec TruePower New models which are a major improvement over Antec’s older psu’s like the Basiq models.
a b ) Power supply
March 24, 2010 12:30:32 PM

+1 for the Corsair VX550
a b ) Power supply
March 24, 2010 12:36:11 PM

Are you planning to add another 5770 is the future?
March 24, 2010 1:39:47 PM

Let me just start by saying thanks for all the feedback, much appreciated.
Checked what I had and I had a "Silver Power SP200A2C 600w" with a "80% efficiency" marker on the side.
The charts on the PSU said :
"AC input: 100-240vac or 230vac "Active PFC""
"DC input: +3,3v +5v +12v1 +12v2 -12vsb +5vsb"
"Max Output: 24 A 30 A 22A 22 A 0,5A 2,5A"
"Max Combined Wattage: 150w 264w 264w 6w 12,5w
585w"
"Total Power: 600w"
Is it good enough? It doesn't have to be working for cfX, since the mobo Im getting doesn't support it afaik, so just single GPU setup wise. Would it even be able to hold a 5850?
a b ) Power supply
March 24, 2010 2:24:21 PM

80 Plus efficient 600W PSU will easily handle a 5770. and even a 5850 for sure.

a c 248 ) Power supply
March 24, 2010 2:24:29 PM

Here are the official power requirements for the new ATI Radeon HD 5850 and HD 5870 video cards.


ATI Radeon™ HD5850 System Requirements:

PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard

500 Watt or greater power supply with two 75 watt, 6-pin, PCI Express® power connectors.

600 Watt or greater power supply with four 75 watt, 6-pin, PCI Express® power connectors for ATI CrossFireX™ technology in dual mode.


ATI Radeon™ HD5870 System Requirements:

PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard.

500 Watt or greater power supply with two, 75 watt, 6-pin, PCI Express® power connectors.

600 Watt or greater power supply with four, 75 watt, 6-pin, PCI Express® connectors for ATI CrossFireX™ technology in dual mode.

The power supply recommendations are for an entire pc system.

!