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OCZ Fatal1ty 550W PS Not So Good ? - Page 2

post #11 of 22
Quote:
Originally Posted by Ruckol1 View Post
It's perfectly fine. I just learned my 500 could handle a 5870 from a "PSU Guru" not long ago so I wouldn't worry.
Is it a StealthXStream v2? And yes 500w can handle all of those cards quite easily, but if it's not the V2, I honestly wouldn't touch it. But that's just me.
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post #12 of 22
Thread Starter 
one thing I do not understand is, if the PS is working and the system runs stable always, what does ripple/regulation do? I mean, if it's working, can this riplle/regulation harm the motherboard or something?
post #13 of 22
Quote:
Originally Posted by Havokr505 View Post
upgrade PSU. Seasonic, Corsair AX, HX series, NZXT Hale90 etc. dont skimp.
Good advice.
post #14 of 22
Quote:
Originally Posted by tomana View Post
one thing I do not understand is, if the PS is working and the system runs stable always, what does ripple/regulation do? I mean, if it's working, can this riplle/regulation harm the motherboard or something?
Poor voltage regulation can cause system instability. Poor ripple suppression can cause actual component damage. So yes, both are extremely important.
post #15 of 22
Thread Starter 
Quote:
Originally Posted by Shub View Post
Poor voltage regulation can cause system instability. Poor ripple suppression can cause actual component damage. So yes, both are extremely important.
ah, ok. Perhaps ripple is like small line voltage spikes getting through I suppose.

just came across this 460 GTX power Draw write up >>> http://forums.atomicmpc.com.au/index.php?showtopic=264

... says max watts drawn for a 460 GTX while using OCCT stressing utility was 120W times 2 cards is 240W on the +12V rails (later in another graph it shows 141W during 3D gaming for single GPU ?) so 550W Fatal1ty PS should have no problem running 460 GTX SLI as a few in this post have said but I am now considering the ripple and it's (possible) impact regarding damage to mobo, graphics card circuitry.

also considering ebaying the Fatal1ty and getting Corsair 650Xt or similar.

Any make/model recommendations under $100 ?
Edited by tomana - 1/16/11 at 6:03pm
post #16 of 22
Quote:
Originally Posted by tomana View Post
ah, ok. Perhaps ripple is like small line voltage spikes getting through I suppose.
It's not that actually. Ripple is the vestige of the AC waveform delivered by your wall outlet to your power supply. Because computer components require DC power, a power supply's job is to convert your wall's AC into DC at several different voltages, all of which are required by various components inside your computer. Ripple is what's left of that AC waveform. The ATX specification has set maximum values for ripple at the various voltages found in a computer. Anything exceeding those values will cause damage to your components, and ideally you want to keep those values as low as possible. For example ripple at 12V must be kept under 120mV of variance from peak to peak, and preferably under 70-80mV. As far as I know your Fatal1ty stays around 50mV at peak load so that's not much of an issue.

Anyway, under $100, I would recommend two units:
http://www.newegg.com/Product/Produc...82E16817371021
http://www.newegg.com/Product/Produc...82E16817207002

Both are great and made by SeaSonic. If you don't mind the radioactive sludge green color of the 2nd one, it's modular, performs admirably, and is an awesome value. Forget about the TX650. Great unit, but totally outclassed.
Edited by Shub - 1/16/11 at 6:28pm
post #17 of 22
Quote:
Originally Posted by Shub View Post
Under $100, I would recommend two units: http://www.newegg.com/Product/Produc...82E16817371021 http://www.newegg.com/Product/Produc...82E16817207002 Both are great and made by SeaSonic. If you don't mind the radioactive sludge green color of the 2nd one, it's modular, performs admirably, and is an awesome value. Forget about the TX650. Great unit, but totally outclassed.
I LOVE my XFX 750w Black Edition. Hasn't given me one problem yet, and I must say (after reading multiple reviews) that it has some of the best Ripple Suppression, Overcurrent Protection, and voltage regulation. It is probably the pride and joy of my system *tear*.

And honestly, you never even notice the "sludge green" when you look in the case. It's just the fan

http://www.jonnyguru.com/modules.php...tory3&reid=184
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post #18 of 22
Thread Starter 
Quote:
Originally Posted by Shub View Post

Anyway, under $100, I would recommend two units:
http://www.newegg.com/Product/Produc...82E16817371021
http://www.newegg.com/Product/Produc...82E16817207002

Both are great and made by SeaSonic. If you don't mind the radioactive sludge green color of the 2nd one, it's modular, performs admirably, and is an awesome value. Forget about the TX650. Great unit, but totally outclassed.
was eyeballing the XFX P1-CAH9 earlier >>> http://www.newegg.com/Product/Produc...82E16817207007

the one you linked to is the CAG9 model. Only difference I can see is the choice for cabling connectors.

the 750W model looks great but I can't swing the $$$ right now, even though it has an awesome rebate at the Egg

tanks for all the input
Edited by tomana - 1/16/11 at 6:41pm
post #19 of 22
Quote:
Originally Posted by tomana View Post
was eyeballing the XFX P1-CAH9 earlier >>> http://www.newegg.com/Product/Produc...82E16817207007

the one you linked to is the CAG9 model. Only difference I can see is the choice for cabling connectors.
They're identical other than the color scheme. The green one is cheaper by a few bucks after you factor in the rebate and shipping.
post #20 of 22
I have this PSU currently with one 460 and I wouldn't recommend SLI'ing 2. Two 460s would require 4 PCIe 6-pin connectors, and the PSU only provides two natively. 550W in any case is cutting it close; a 650W or above unit would definitely be recommended.
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