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Solved: PSU Rails - Help!!!

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brite750's Avatar
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21-Feb-2009, 06:32 AM #16
Xilence seems to be a brand that comes up in UK so I'm not familiar with their history or quality, youre on your own there.
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21-Feb-2009, 06:33 AM #17
I was planning to buy a PSU from the local store. They only sell Xilence PSUs. They give...about 3 year guarantee i think. so if something goes wrong, i can return it. Well... Is the 480W one or the 550W one good enough??
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21-Feb-2009, 06:37 AM #18
I would go with the 550watt, I didnt see the specs on that one though.
As I said many PSU companies play a lot of games with their specs so the 550 I would hope would give you some cushion. Just make sure it has over the 26amps on all the 12v+ rails combined
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Legend:
PSU = power supply unit, CPU = central processing unit
MB = motherboard, NIC = network interface card
OS = operating system, gfx = graphics
GPU = graphics processor, d/l = download, ob = on board
HDD = hard disk drive, FDD = floppy disk drive
HSF = heat sink w/ fan, FSB = front side bus
DM = device manager, KB = Keyboard
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21-Feb-2009, 06:41 AM #19
http://www.xilence-power.com/
550W Eco Series | SPS-XP550

if its this one you should be fine, and notice it has the 6pin pci-e gfx card plug
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21-Feb-2009, 06:41 AM #20
I posted the specs above, if u didn't notice :P here they are again
+3.3V - 33A
+5V - 32A
+12V1 - 17A
+12V2 - 18A
-12V - 0.8A
+5VSB - 2A

That's 35A.
I'm so bad at this! I'm gonna go buy the PSU on monday... I'll post again when i have it... i bet i need some help with all the connectors and everything.
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21-Feb-2009, 06:44 AM #21
Dash-X's Avatar
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21-Feb-2009, 07:05 AM #22
Anyways, would a HD4850 512MB also work with the PSU?
right now... i dunno which one to get.
4850 or 9800GT
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21-Feb-2009, 07:26 AM #23
4850 is better, 9800 GT is PhysX capable.

18 A and 17 A does not exactly equal to 35 A, it is 18 A for the CPU and 17 A for the rest of the system. I think you should be able to get the Corsair 400 W cheap too, and it offers more power, and consumes less power (wall input) than the Xilence 550 W.
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21-Feb-2009, 07:33 AM #24
They Don't sell Corsairs here. so im gonna have to do with Xilence.
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21-Feb-2009, 08:10 AM #25
Quote:
Originally Posted by Dash-X View Post
this one is fine, assuming Xilience is a decent brand and you dont have 6 hard drives etc. there are also wattage calculators on line to give you some idea of you wattage needs but again amps plays more heavily into it, I usually look at my total watts mult times 1.5 and make sure I have a good amount of amps on the 12volt rails, good amout being 25 or more, perferably more like 30amps, older systems of course dont need as much. Brands like PC Power & Cooling and now Corsair and a few others are getting back to the single 12 volt rail design making things a little less complicated. We are mostly hardware snobs here so we like our quality brand named products and mostly for good reasons, if your PSU craps out on you it can take some of your other stuff with it, just an FYI. Thats why many of us sit for hours going through technical reviews of stuff that bores the pants off of most folks, we want our good stuff at reasonable prices and no BS.
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Legend:
PSU = power supply unit, CPU = central processing unit
MB = motherboard, NIC = network interface card
OS = operating system, gfx = graphics
GPU = graphics processor, d/l = download, ob = on board
HDD = hard disk drive, FDD = floppy disk drive
HSF = heat sink w/ fan, FSB = front side bus
DM = device manager, KB = Keyboard
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21-Feb-2009, 09:27 AM #26
Here is my basic rule for ANY machine using a PCIe video card.

Because of ATX design criteria anytime you are using a PCIe video card you should look for a power supply that either has a large single +12v rail (50-60 amps) or at least three +12v rails at 17-19 amps per rail. ATX specs specify that the +12v2 rail should be dedicated and isolated for the processor auxiliary power. If you purchased a power supply with two +12v rails and +12v2 was dedicated and isolated for the processor auxiliary power you would only have the +12v1 rail to supply all of your +12v system needs.

Of course if you are considering a high wattage processor and a high power video card or cards you would need a power supply with a large single +12v rail of around 80 amps or if you want a power supply with multiple +12v rails look for a unit with four or more +12v rails at 18 amps or more per rail. With ANY unit the power output should be calculated at 40-50C NOT 25C.

You should also have approximately 40-80 amps combined on the +3.3v and +5v rails.

A power supply with a large single +12v rail is generally a better selection than a power supply with multiple +12v rails since you don't have to worry about rail power sharing with a large single +12v rail.

Modular Power Supply's: Although modular power supply's are nice from a wiring routing standpoint in my opinion they are not a good choice because of potential power loss at the connectors, plus with a modular unit you have many more points of potential failure than with a hard wired unit.

I recommend either PC POWER & COOLING or CORSAIR for single +12v rail power supplys.
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brite750's Avatar
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21-Feb-2009, 09:48 AM #27
not many folks have that, like I said we are HW snobs. Newegg was having a sale on Corsair PSUs and thay were very tempting, even though my coolermaster works fine and dandy.
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22-Feb-2009, 12:40 PM #28
I have a question of a bit different topic. The thing is, I have a ASUS P5LD2-X/1333 Motherboard: http://www.asus.com/products.aspx?mo...11&l3=498&l4=0

And I made a different decision. Going to buy a 512MB Gigabyte HD4850.
http://www.gigabyte.com.tw/Products/...ProductID=2899

And you people know bit more of this kind of stuff so here's the question. The MOBO has - 1x PCI Express x16, 2xPCI Expressx1, 3xPCI

The GPU is PCI Express 2.0(Or at least supports it)

Will the GPU fit on the mobo? Will it have the same performance? If not, how big performance change?
If everything in my PC is kinda crappy then i'd better save up money to buy a new & better PC other than piece by piece. Or what do you think?
brite750's Avatar
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22-Feb-2009, 05:44 PM #29
the slot is the same and will run the card
brite750's Avatar
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22-Feb-2009, 05:48 PM #30
http://en.wikipedia.org/wiki/PCI_Express

a mb with pci-e16x 2.0 will run theoretically 2x faster at least bandwidth wise. I wouldnt worry about it though I doesnt equate to getting 2x the fps sadly.
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graphics card, power supply, psu, rails

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