/ Sign-up
Your question

What psu?

  • CPUs
  • Product
Last response: in CPUs
March 15, 2010 11:54:31 AM

Hello i was looking at some Power Supply Calculators but they seem to say Different Power Supplys to use!

please someone help!!!!

do i need a 700w?

AMD Phenom 965 Bundle Deal Including ASUS M4A79XTD EVO Motherboard, Phenom 965 Black Edition Processor (maybe overclock), GEIL 4GB DDR3 Black Dragon Memory and Windows 7 Home premium Edition plus, Colin Mcrae Dirt 2,sapphire redoeon hd 5770,

please help

Regards rob

More about : psu

March 15, 2010 11:55:29 AM

sorry about adding Colin Mcrae Dirt 2 lol
March 15, 2010 11:57:14 AM

and Front: 140mm Red LED Fan x 1 (included)
Top: 140mm Fan x 1 (included) or 120mm Fan x 1 (might Included)
Rear: 120mm Red LED Fan x 1 (included)
Side: Acrylic window; supports 120mm x 2 (might Included)
Related resources
a c 174 à CPUs
March 15, 2010 1:18:36 PM

Hi newcomer and welcome to the Tom's hardware forum.

It's not true, with a 550W PSU you have enough if you don't plan use Crossfire. Antec 550W

If you want use Crossfire, you need a 650W PSU for your rig. Antec 650W

Here are the system requirements for your 5770 GPU.

ATI Radeon™ HD 5770 System Requirements

PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
450 Watt or greater power supply with one 75W 6-pin PCI Express® power connectors recommended (600 Watt and two 6-pin connectors for ATI CrossFireX™ technology in dual mode)
Certified power supplies are recommended. Refer to for a list of Certified products
Minimum 1GB of system memory
Installation software requires CD-ROM drive
DVD playback requires DVD drive
Blu-ray™ playback requires Blu-ray drive
For an ATI CrossFireX™ system, a second ATI Radeon™ HD 5770 graphics card, an ATI CrossFireX Ready motherboard and one ATI CrossFireX Bridge Interconnect cable per graphics card (included) are required
a b à CPUs
March 15, 2010 2:50:28 PM

The rating will depend on the quality of the power supply. With a cheaper power supply you may need a higher wattage output to achieve the same affects of a good power supply. When you are picking out a power supply be sure to get one that is 80 PLUS Certified. Two good companies to look at are corsair and antec; they are high quality and are reasonably priced. Personally I would go with a 650w if you plan on running 2 5770s in the future or you are not sure about future upgrades, this would give you some head room for future upgrades. A 450w to a 550w would be fine for your current setup.
March 15, 2010 3:51:55 PM

hello thanks for the help, would a collmaster 700w psu be ok because it comes i a deal with ebuer.
a b à CPUs
March 15, 2010 5:05:05 PM

I’m guessing you mean cooler master 700w. I have heard good things about them, but I have not personally used them. It will give you what you need but it will be overkill for a single 5770, also it may be cheaper to get the corsair.
a c 174 à CPUs
March 15, 2010 5:12:58 PM

See the links that I post, with that two PSUs are enough for your rig.