Got a HD 4770 and i ve a psu problem?????

I just got a HD4770 and i ve a 450W psu with 25amps on the single +12 rail....

I haven't plugged it in still as Christmas is tomorrow..... but my frnd told that my power supply will not be able to handle it....

My full system specs is as follows:-

AMD Athlon x2 5200+ 2.7Ghz @ 3Ghz

ASUS M2N68-AM SE2 MOBO

Transcend 4 GB(2 x 2 GB) 667Mhz DDR2 RAM

Sapphire HD 4770 512 MB

2 X WD Caviar 320 GB HDD

Creative Quadro sound system(4.0)

2 X 80mm case fans

Npower 450W PSU

Windows 7--64-Bit---Ultimate

Can you give more information? How did you setup the card, what happens when you turn on the PC, etc.

Can you give more information? How did you setup the card, what happens when you turn on the PC, etc.

Tezcatlipoca666

Really depends how much amps are onthe 12v rails on the PSU. Your PSU will tell you on the box. Ideally you probably want minimum 30 amps on dual 12v rails. On quad you going ot need more...

The box will saying something like

3v 5v "12v" "12v"

10 10 15 15

Add the 12vs up.

Really depends how much amps are onthe 12v rails on the PSU. Your PSU will tell you on the box. Ideally you probably want minimum 30 amps on dual 12v rails. On quad you going ot need more...

The box will saying something like

3v 5v "12v" "12v"

10 10 15 15

Add the 12vs up.

ShimmerMan

Yea Try going fo a dual rail or more PSU. The single rail PSU will work with a 4770 becuase theres only one PCI-E x16 power connecter you have to worry about. But The reason I say try to go for a dual rail or more is becuase Power load can be spread out more over dual, triple, or quad rails and will give you less problems.TrentDondasKhan

Ok so if i get a dual rail one. How much amps should be der on each on of them???? i.e, 12V1=?? and 12V2=??drwcker

When you buy a dual rail PSU, I would still personally make sure you still have 30 amps to work with between the two. A previous post described determining the max 12V capacity by adding them all. This is untrue. You must look at the max wattage that the 12v rails can output, and divide that by 12. In other words, if the max wattage of the 12V rails is at least 360W, then you'll be fine.

Example:

Antec Basiq 430w PSU

12V1= 17A

12V2 = 16A

Max load 12V1 + 12V2 = 360W (This is the number you want to look for)

[QUOTE="TrentDondasKhan"]Yea Try going fo a dual rail or more PSU. The single rail PSU will work with a 4770 becuase theres only one PCI-E x16 power connecter you have to worry about. But The reason I say try to go for a dual rail or more is becuase Power load can be spread out more over dual, triple, or quad rails and will give you less problems.drwcker

Yea Try going fo a dual rail or more PSU. The single rail PSU will work with a 4770 becuase theres only one PCI-E x16 power connecter you have to worry about. But The reason I say try to go for a dual rail or more is becuase Power load can be spread out more over dual, triple, or quad rails and will give you less problems.TrentDondasKhan

Nearly every multi-rail PSU delivers power by splitting it from a single rail; in short, buying a multi-rail PSU will not "spread out" the power more evenly.

[QUOTE="drwcker"] Ok so if i get a dual rail one. How much amps should be der on each on of them???? i.e, 12V1=?? and 12V2=??ravenguard90

When you buy a dual rail PSU, I would still personally make sure you still have 30 amps to work with between the two. A previous post described determining the max 12V capacity by adding them all. This is untrue. You must look at the max wattage that the 12v rails can output, and divide that by 12. In other words, if the max wattage of the 12V rails is at least 360W, then you'll be fine.

Example:

Antec Basiq 430w PSU

12V1= 17A

12V2 = 16A

Max load 12V1 + 12V2 = 360W (This is the number you want to look for)

[QUOTE="TrentDondasKhan"]Yea Try going fo a dual rail or more PSU. The single rail PSU will work with a 4770 becuase theres only one PCI-E x16 power connecter you have to worry about. But The reason I say try to go for a dual rail or more is becuase Power load can be spread out more over dual, triple, or quad rails and will give you less problems.MaoTheChimp

Nearly every multi-rail PSU delivers power by splitting it from a single rail; in short, buying a multi-rail PSU will not "spread out" the power more evenly.

Yea Try going fo a dual rail or more PSU. The single rail PSU will work with a 4770 becuase theres only one PCI-E x16 power connecter you have to worry about. But The reason I say try to go for a dual rail or more is becuase Power load can be spread out more over dual, triple, or quad rails and will give you less problems.TrentDondasKhan

Nearly every multi-rail PSU delivers power by splitting it from a single rail; in short, buying a multi-rail PSU will not "spread out" the power more evenly.

your psu will handle the card just fine,dont worry..i run a 3850 which uses just a little less than a 4770 on my old 435w psu,so yours will handle the card fine..darx55

Here, if you want good information on multi vs single rail PSU's read this.

[QUOTE="drwcker"][QUOTE="MaoTheChimp"]

Nearly every multi-rail PSU delivers power by splitting it from a single rail; in short, buying a multi-rail PSU will not "spread out" the power more evenly.

TrentDondasKhan

Did I say that in my post? All I said that multi-rail PSU's will not spread out the power more evenly.....

The only reason why anyone should take into consideration a single vs. multi rail PSU is if he/she's going to be using a high-powered TEC. Otherwise, there's no reason why the amount of rail's should determine a PSU purchase decision.

[QUOTE="darx55"]your psu will handle the card just fine,dont worry..i run a 3850 which uses just a little less than a 4770 on my old 435w psu,so yours will handle the card fine..drwcker

Yea Try going fo a dual rail or more PSU. The single rail PSU will work with a 4770 becuase theres only one PCI-E x16 power connecter you have to worry about. But The reason I say try to go for a dual rail or more is becuase Power load can be spread out more over dual, triple, or quad rails and will give you less problems.TrentDondasKhan

Here, if you want good information on multi vs single rail PSU's read this.

opamando

[QUOTE="TrentDondasKhan"]Yea Try going fo a dual rail or more PSU. The single rail PSU will work with a 4770 becuase theres only one PCI-E x16 power connecter you have to worry about. But The reason I say try to go for a dual rail or more is becuase Power load can be spread out more over dual, triple, or quad rails and will give you less problems.swehunt

[QUOTE="swehunt"][QUOTE="TrentDondasKhan"]Yea Try going fo a dual rail or more PSU. The single rail PSU will work with a 4770 becuase theres only one PCI-E x16 power connecter you have to worry about. But The reason I say try to go for a dual rail or more is becuase Power load can be spread out more over dual, triple, or quad rails and will give you less problems.drwcker

[QUOTE="drwcker"][QUOTE="swehunt"] First i'd like to say this: If i had a "U'r doing it wrong" pic id put it here. 1) I really wanna know how in earth you do belive this false and incorrect facts your writing? 2) The best solution is haveing one rail with lots of power in terms of stabillity. 3) With low quality PSUS most "rails" are faked ones that come from the same rail but are limmited and splitted. 4) Better PSUs can directly load the total amount of load on the 12v rails onto eachother as long as the total amount of load is not consumed from the 12v. 5) The recomended usage per 6pin PCIe conector is 75w, is this what you mean by rail and spread the load even? cos even if a PCU have one 12v rail it could have four 6pin PCIe conectors. 6) I wan't you to tell me how you can spread the load better with two than on one rail?, you see you got it all wrong. 7) I can't find a single reason to worry about how many rails the 12v got, in fact my PSU in sig is by many reviews the best 550w PSU's you can get your hands on and it got a single 41A 12v rail. If anything you would want to know the maximum amount of amps on the 12v rail, with the HD4770 is only consumes one PCIe pwr conector and thats a big setback for most +12v multirail psu's as you would load the rail uneven. Im sorry for sounding harsh on you but please do some more reading and research before you tell people to spend cash on things they really dont nead.swehunt

Yea Try going fo a dual rail or more PSU. The single rail PSU will work with a 4770 becuase theres only one PCI-E x16 power connecter you have to worry about. But The reason I say try to go for a dual rail or more is becuase Power load can be spread out more over dual, triple, or quad rails and will give you less problems.TrentDondasKhan

[QUOTE="TrentDondasKhan"]Yea Try going fo a dual rail or more PSU. The single rail PSU will work with a 4770 becuase theres only one PCI-E x16 power connecter you have to worry about. But The reason I say try to go for a dual rail or more is becuase Power load can be spread out more over dual, triple, or quad rails and will give you less problems.TrentDondasKhan

[QUOTE="TrentDondasKhan"]Yea Try going fo a dual rail or more PSU. The single rail PSU will work with a 4770 becuase theres only one PCI-E x16 power connecter you have to worry about. But The reason I say try to go for a dual rail or more is becuase Power load can be spread out more over dual, triple, or quad rails and will give you less problems.swehunt

How on Earth does this logic work? You're saying that by splitting power from a single rail, it becomes "less stable"? You're essentially getting power from the same rail. How does that adulterate it?

By your logic, this PSU and this PSU are terrible, low quality POS.

Again, the purpose of splitting rails is typically to incorporate overload protection, something that a single, high-amperage rail is unable to do. This will not put an "uneven" load on the rails like you say, as you're pulling the same power from the same, single, rail.

[QUOTE="swehunt"][QUOTE="TrentDondasKhan"]Yea Try going fo a dual rail or more PSU. The single rail PSU will work with a 4770 becuase theres only one PCI-E x16 power connecter you have to worry about. But The reason I say try to go for a dual rail or more is becuase Power load can be spread out more over dual, triple, or quad rails and will give you less problems.MaoTheChimp

How on Earth does this logic work? You're saying that by splitting power from a single rail, it becomes "less stable"? You're essentially getting power from the same rail. How does that adulterate it?

By your logic, this PSU and this PSU are terrible, low quality POS.

Again, the purpose of splitting rails is typically to incorporate overload protection, something that a single, high-amperage rail is unable to do. This will not put an "uneven" load on the rails like you say, as you're pulling the same power from the same, single, rail.

Dual rail is better. One rail is less stable as it's one rail with loads of watts, it's more prone to blowing and possibly taking out your whole video card with it. And I'm not saying that it's likely to happen, but that just it's more of a risk than dual rail.

And dual rail you don't really lost that much watts over single rail anyway. So really no reason to go single over dual.

[QUOTE="swehunt"][QUOTE="TrentDondasKhan"]Yea Try going fo a dual rail or more PSU. The single rail PSU will work with a 4770 becuase theres only one PCI-E x16 power connecter you have to worry about. But The reason I say try to go for a dual rail or more is becuase Power load can be spread out more over dual, triple, or quad rails and will give you less problems.MaoTheChimp

How on Earth does this logic work? You're saying that by splitting power from a single rail, it becomes "less stable"? You're essentially getting power from the same rail. How does that adulterate it?

By your logic, this PSU and this PSU are terrible, low quality POS.

Again, the purpose of splitting rails is typically to incorporate overload protection, something that a single, high-amperage rail is unable to do. This will not put an "uneven" load on the rails like you say, as you're pulling the same power from the same, single, rail.

Just as i wrote of most low budjet power switching suppiles have a load protection on each of the 12v rails witch are spoofed from one real rail, this just give you a higher risk of hitting the limmit on the spoofed rails, not a better chance of getting good quality low noise/ripple because of lower usage.

A good brand multirail (just as i wrote) have real supplied current from the multiple rails and they are totally seperated from eachother both internaly and externally. In my book i'll never recomend anyone getting a lowq PSU, but recomending dual/multi rail PSU's just because you can split the load is plain stupid.

Look at it from this way and you'll see. 1rail with say 41A maximum load. or 2 rails with maximum load of 21A and 20A imagine If you load the 12v rail on the single PSU with 40A it should be ok, but for the dual 12v rail PSU you'll end up always getting more of one rail, try getting gfx and cpu 12V from each rail to match eachother, this is where the logic kicks in.

With many amps on a single rail you'll be able to take a high output from it and it'll be fine values of ripple, but pushing a rail (not spoofed one) you can end up getting high ripple, and high ripple will degrade components slowly. chanses are you'll overload a dualrail if you don't know the exsact amount your components demand.

And where did you find me go against multirail 12v?, i just said it's plain stupid to recomend multirail where it make no sense i didn't say thoose psu's are bad, but for TC it's a waste of money to get thoose because he has no dualcard setup. (witch is the only thing that could benefit a multi 12v rail PSU over a single 12v rail psu.)

Having a PSU hitting the overload protection isn't that big of a deal but loading a multirail 12v PSU wrong migth trigger it to do so, and this isn't any problems with the single 12v PSU as it should (if it's a good brand) be able to handle anything up to it's maximum 12v output even the 41A as i gave in the xsample.

Im sorry but I really wanna know: What do you mean is better to cut power at half and setting an overload protection on it? O.o

Most supplies has a cut if there is short circuit, but this applies if its a 41A on the rail or 3A, it does not matter.