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Help me with choosing the new power supply unit

Last response: in Components
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March 27, 2011 3:19:53 AM

Yesterday i Bought XFX Readon HD5770 grafix card i had connected it to my system using one 6pin to 2 4pin connector for power it had installed smoothly when i launched game the system turned after 2minutes,after i turned it on and the launched other game runs for 2mins and the pc turned off.After i tried to power on the PC it doesnt turned on.But the green light in the motherboard glows,by searching online i came across triggering PSU the fan wont work.

Is PSU dead or any other problem?
If PSU dead means which new PSU can i go with?


My System Configuration

AMD Phenom II X4 965
ASUS M4A89GTD PRO
Seagate 500GB Barracuda 7200.12
Transcend DDR3 1333Mhz DIMM 2GBx2
Zebronics ZEB-450W (Maybe Dead)
XFX Readon HD5770

Here is an list of PSU's i had in my list are they compatible with my GPU
http://cgi.ebay.in/FSP-SAGA-II-500W-Power-Supply-/27066...
http://www.zebronics.net/m500w_platinum_powersupply.asp
http://www.zebronics.net/m600w_platinum_powersupply.asp
March 27, 2011 5:41:49 AM

According to the specs "Minimum 450 Watt Power Supply Requirement" You might want to try finding test reviews of your psu to find out if it actually puts out 450w. Some claim they do but really give out less. Some actually give out more than their listed watts.

My opinion is it sounds like there isnt enough power for the card once it gets under a load.

Also SilverStone, Thermaltake, Corsair are GOOD PSU brands.

You can try using this to see the esimated watts used in your system. Also it's recomended to have 50-100w more than what you actually use.

http://extreme.outervision.com/PSUEngine
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a b ) Power supply
March 27, 2011 6:03:40 AM

sounds like the power supply...get a good power supply..don't buy a cheap brand...get corsair, antec or seasonic
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March 27, 2011 6:10:11 AM

Bigmac80 said:
sounds like the power supply...get a good power supply..don't buy a cheap brand...get corsair, antec or seasonic


This one is cooler master is that not worth?
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a c 144 ) Power supply
March 27, 2011 6:36:39 PM

I wouldn't put a CoolerMaster PSU into your computer. :D 
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a c 126 ) Power supply
March 27, 2011 7:00:52 PM

In this day and age, do not buy any PSU with a little voltage switch on it. At best, it is an older, inefficient design. More likely, it is overrated garbage, like that particular Coolermaster. Antec, Seasonic, Corsair, Enermax, and XFX are among the quality brands.
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March 27, 2011 7:14:30 PM

get an fsp everest 700w/800w, very good psu, cheaper among hi end psu, silent, 80plus, modular and a true 700w/800w power.
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March 27, 2011 7:44:08 PM

arunefx said:
is this PSU compatible with my GPU?
http://cgi.ebay.in/Cooler-Master-Extreme-Power-500W-PC-...


To see if it's compatible with the gpu, the gpu will either have one or two 6 or 8 pin connectors on the gpu, find a PSU with that amount of connectors.

If you only need one 6 pin then find a psu with atleast one 6 pin, most come with more than one. For example there will be a slot that says "PCI-Express Connector 2 x 6+2-Pin" This means there are two 6-pin connectors BUT they can be turned into two 8 pin :p  so they are compatable with both the gpu's that have 6 or 8 pin connectors.

I dont know what your currency is but these are some good non exspensive 500 watt. If you plan to make future upgrades you might want a 650w to make sure it will support all your stuff.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

on another note single 12v rails are better than multiple ones.
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a c 126 ) Power supply
March 27, 2011 8:15:11 PM

I've never seen a single shred of evidence (marketing hype doesn't count) that single-rail designs are "better" than multi-rail designs, and I HAVE seen information suggesting that, in some cases, multi-rail designs can be safer, assuming properly working OCP.
Compatibility is not merely a matter of number of connectors. Logisys, for example, makes a unit (http://www.newegg.com/Product/Product.aspx?Item=N82E168...) that Hardware Secrets found to be capable of maybe 300W. Yet it has TWO 6-pin PCIE power connectors. I'm not sure I'd call this PSU-shaped object truly compatible with any computer, particularly not one with a powerful discrete GPU.
Incidentally, FSP is typically another decent choice.
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a c 1202 ) Power supply
March 27, 2011 8:35:18 PM

A reference version Radeon HD 5770 will draw a maximum of 108 Watts (9 Amps) from the +12 Volt rail(s).

Your Zebronics ZEB-450W most likely provides less than 16 Amps on its +12 Volt rail. That is grossly insufficient for your system configuration when using the Radeon HD 5770. That is exactly why it's shutting itself down because you have tripped the over current protection circuit on the +12 Volt rail.

You need to get a reputable name brand power supply unit like Antec, Corsair, Enermax, Seasonic, XFX.

The power supply unit must be able to deliver the continuous power it is rated for and to be able to do it with with very low ripple and noise voltage.

The Cooler Master low end series are not good. Zebronics is not reputable.
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March 30, 2011 5:03:56 PM

Onus said:
I've never seen a single shred of evidence (marketing hype doesn't count) that single-rail designs are "better" than multi-rail designs, and I HAVE seen information suggesting that, in some cases, multi-rail designs can be safer, assuming properly working OCP.
Compatibility is not merely a matter of number of connectors. Logisys, for example, makes a unit (http://www.newegg.com/Product/Product.aspx?Item=N82E168...) that Hardware Secrets found to be capable of maybe 300W. Yet it has TWO 6-pin PCIE power connectors. I'm not sure I'd call this PSU-shaped object truly compatible with any computer, particularly not one with a powerful discrete GPU.
Incidentally, FSP is typically another decent choice.



I have read many reviews which have nothing to do with marketing and is just pure testing of PSU that say for crossfire/sli or in a machine with a high end gpu a single rail is better. I think the reviews also show why good brand PSU's for high end gaming have a single rail and ones that do poorly and arent meant for crossfire or sli dont.

from overclock.net
hardwaresecrets.com

and a few others.
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a c 126 ) Power supply
March 30, 2011 10:05:54 PM

HardwareSecrets???? Absolutely not so; Gabriel Torres has said any number of times that one rail vs. multi-rail only matters in cases of bad design.
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March 31, 2011 2:10:14 AM

agreed^
if companies have done good job on their PSU designs, whether single or multi rail, doesnt matter, both will work. single rail sounds more efficient ,but multi rail
is much safer, complies with the EPS12V spec.
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