Power Supply question... Please help!

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Blackjack

Posts: 62   +1
Hey everyone,

I'm just buying new parts for a home-made computer. I can't find a PSU that has enough watts to power these parts :

AMD Athlon™ 64 FX-62 Dual Core Processor

NVIDIA nForce 590 SLI Motherboard

XFX PVT71JYHE9 Geforce 7950GT 512MB 256-bit GDDR3 PCI Express x16 HDCP ExTreme Edition Video Card

I don't know how many watts a PSU should have to power those parts, and more (SDRAM, hardrives, etc.).

Please Tell me how many watts i would need, and where a good site would be to buy one. Or, Reccomend a PSU for a good gaming computer.

Thanks.
 
Blackjack said:
Hey everyone,

I'm just buying new parts for a home-made computer. I can't find a PSU that has enough watts to power these parts :

AMD Athlon™ 64 FX-62 Dual Core Processor

NVIDIA nForce 590 SLI Motherboard

XFX PVT71JYHE9 Geforce 7950GT 512MB 256-bit GDDR3 PCI Express x16 HDCP ExTreme Edition Video Card

I don't know how many watts a PSU should have to power those parts, and more (SDRAM, hardrives, etc.).

Please Tell me how many watts i would need, and where a good site would be to buy one. Or, Reccomend a PSU for a good gaming computer.

Thanks.


Look for 400-500 watt PSU.

www.mwave.com
www.tigerdirect.com
www.dalco.com
www.newegg.com
www.compusa.com
 
Yeah, sure. get Techincal. I want a PSU that won't fry my Motherboard. I want something that will be able to power Those parts.
 
Well, I just looked it up. How about a

ENERMAX All in One Noisetaker Series EG701AX-VE SFMA(24P) ATX12V 600W Power Supply - Retail

Dual +12V: Yes
Efficiency: 80%
Fans: 2
Hold-up Time: 17ms at 115VAC or 230VAC, full load
Main Connector: 20+4-Pin
Modular Cabling Support: No
Over Voltage Protection: +5V: 5.5V~7.0V +3.3V: 3.76V~4.3V +12V1 & +12V2: 13.4V~15.6V
Overload Protection: 110~160% of max load
PFC: Active
SLI Support: NVIDIA SLI Certified

Would that do it? It's $129. At Newegg.
 
Blackjack said:
Well, I just looked it up. How about a

ENERMAX All in One Noisetaker Series EG701AX-VE SFMA(24P) ATX12V 600W Power Supply - Retail

Dual +12V: Yes
Efficiency: 80%
Fans: 2
Hold-up Time: 17ms at 115VAC or 230VAC, full load
Main Connector: 20+4-Pin
Modular Cabling Support: No
Over Voltage Protection: +5V: 5.5V~7.0V +3.3V: 3.76V~4.3V +12V1 & +12V2: 13.4V~15.6V
Overload Protection: 110~160% of max load
PFC: Active
SLI Support: NVIDIA SLI Certified

Would that do it? It's $129. At Newegg.

Yes that will be good for now but It won't handle another 7950Gt if you decide to upgrade to an sli setup later on.
 
Blackjack said:
Yeah, sure. get Techincal. I want a PSU that won't fry my Motherboard. I want something that will be able to power Those parts.

Check the following specifications when looking for a PSU.

Efficiency- Should be between 65-85%.

Holdup time- Look for the value range between 15-30 milsec, The higher the better) This allows your system to remain running after a power outage. Obviously this is not a replacement for an UPS. Just a safety feature

Ripple (aka NOISE)-A good power supply has 1% or less ripple rating.

MAX LOAD-The highest AMP that can be safely delivered to each device.
-3.3v,-5v AND 3.3v, 5v and 12v

MTBF- This is the life expectency of your PSU. A good PSU will have 100,000 hours or more

Line Regulation-Look for 1% or less.

Transient Response- (Excess transient Voltage results in system errors and lockups.
 
there are several good websites with PSU calculators. Just google it. As a rule of thumb, add 30% more for cushion. PSUs degrade over time.
 
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