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PSU too weak?

Last response: in CPUs
June 29, 2008 3:48:50 PM


About to order my new computer, and im not so sure if my PSU is strong enough to run it!

Samsung SpinPoint F1 750GB SATA2 32MB 7200RPM
Radeon HD 4870 512MB
Intel Core™ 2 Duo E8400 3.0GHz
Corsair TWIN2X pc6400 4096mb
Asus P5Q PRO, P45, Socket-775
1x DVD player

The PSU is the 500W PSU that comes with Antec Sonata III:

Since i only got 1 harddrive, not running crossfire will the 500W do it? Ive heard that Antecs PSU's should be really good.

/ Hansen

More about : psu weak

a b à CPUs
June 29, 2008 4:05:44 PM

Yes, the Antec Earthwatts 500w PSU will be fine for that system with that card. It even comes with the 2 6pin PCIe connectors

Minimum System Requirements for a Sapphire HD4870

PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended (600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode)”
Certified power supplies are recommended.
1GB of system memory
Installation software requires CD-ROM drive
DVD playback requires DVD drive
Blu-ray™ / HD DVD playback requires Blu-ray / HD DVD drive
For a complete ATI CrossFireX™ system, a second ATI Radeon™ HD 4870 graphics card, an ATI CrossFireX Ready motherboard and one ATI CrossFireX Bridge Interconnect cable per board (included) are required

Double slot solution
June 29, 2008 10:40:56 PM


the 500w that comes with the case!
dude the video card used close to 200w at load that's 12v load not 3.3v load

you will surly crash - seriously it could work, its an antec, but not a good idea you can get a good psu for $50 with rebates

i check out the psu - its a good psu and should work if your system crashed in hard gaming do not chance it and replace it.
its small and will probably run hot

you have 2x 17 amp rails = at 80% = 300w is about what the cpu and gpu will draw if you oc the cpu high.

keep the cpu at 3.6ghz or below and you be fine

antec makes really good low end psu and they are very conservative in their ratings

for efficent system you should be a 45-65% of your load as you go lower or higher the system is less efficent. you are high at ~ 80%
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July 2, 2008 5:16:14 PM

if you're on a budget, that psu should work fine.
July 4, 2008 11:02:12 PM

Since you have minimal drives and dual, not quad cores, you will be OK... Since it's a decent antec unit. Of course, the preferable thing would be to spend $60-80+ on a higher wattage PSU, but you will be fine, especially if you don't overclock.
a c 172 à CPUs
July 9, 2008 5:58:53 AM

An HD4750 uses "only" about 120 watts. My Q6600 OC'd to 3.6 GHz uses about 120 watts (based on measurement).

Mid-level motherboard - 40 watts (based on measurement)
4GB RAM - 20 watts (based on measurement)
HD - 20 watts
DVD - 30 watts
Fans - 10 - 25 watts.

I estimate total power consumption to be around 350 - 360 watts with your processor.

Also, your PSU is rated at 500 watts continuous power at 50 C (two of my requirements for a "decent" PSU).