[panthertooth]

Just upgraded my video card from a gforce 9800 to a gtx550ti, the minimum amps for the 550 is 24A on the 12V rail, my question is how stable would it be running This PSU

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Personally if you do not already have the PSU I would strongly recommend you consider an alternative
http://www.hardwarec...ply-review.html


Corsair - considered by many to be the best
http://www.newegg.co...N82E16817139028
40 amps on 12 v rail
Antec
Coolermaster

and of course you are right on the edge and will be driving the PSU to its max.

On that card here is the full test report
http://www.bit-tech....i-1gb-review/12

and the max power consumption under load was 248 watts

[Macboatmaster]

Personally if you do not already have the PSU I would strongly recommend you consider an alternative
http://www.hardwarec...ply-review.html


Corsair - considered by many to be the best
http://www.newegg.co...N82E16817139028
40 amps on 12 v rail
Antec
Coolermaster

and of course you are right on the edge and will be driving the PSU to its max.

On that card here is the full test report
http://www.bit-tech....i-1gb-review/12

and the max power consumption under load was 248 watts

[panthertooth]

The PSU is currently what i have in my PC right now

Here is the rundown of my PC

MB: M4A78LT-M LE

CPU:Can't remember exactly but i think it was an amd phenom II x2 560, it's overclocked by the motherboard to AMD phenom II X4 B60

Ram:4GB kingston PC3-10700

Sound: sound blaster audigy 2

Sata DVD RW drive

One segate sata 250G HDD 7200rpm
One WD IDE 160G HDD

Video: EVGA Gforce 550ti 1054MB GDDR5

Front card reader

and of course you are right on the edge and will be driving the PSU to its max.

I'm assuming you mean with the 630 PSU

So whould the PSU you recommended be sufficient or should i go with something like This

[Macboatmaster]

To save me a lot of typing please see this
http://www.overclock...ad.php?t=548862

that graphics card has only one power connection.

In theory the power supply you listed originally - having two 12 volt rails one capable of supplying 21A and one capable of supplying 22A would do the job - but did you read the poor results of the test on one of those PSU`s from XION that I sent you

It is very unlikely I think, that that PSU will provide you with anything like the reliability and serice that a Corsair one will

The one I suggested would do, HOWEVER do you need to bear in mind any possibility of adding another graphics card, if so and you may at sometime run dual cards then of course you need to condier what you may then require.

When looking at PSU`s it is not really just about - what it is capable of supplying - it is more a question of CAN it supply that steady and CERTIFIED.

ALSO if you are going to change - and you are overclocking - temps are important of course, so airflow is important and a modular power supply will serve to assist that.
http://www.corsair.c...wer-supply.html

HOWEVER - as always there are two points of view and whilst with a modular supply you may disconnect any outputs from the PSU that you do not need, therefore resulting in less cables and a neater system, with improved airflow, there is another stance, that says that these modular supplies are not a great advantage, over and above the non modular - if proper installation techniques are used and unrequired cables are kept secured out of the way and not left across the air flow pathways

[phillpower2]

I concur with the sound advice that colleague Macboatmaster has offered panthertooth
Other points to consider when choosing a PSU are 1: For stable performance the PSU must have a minimum of an 80% output efficiency rating. 2: Stick with a single +12V rail. 3: Modular PSUs are more expensive than standard PSUs + cables can be lost and are almost if not impossible to replace.

Corsair is my preferred brand of PSU but see the attached link for brands to trust and brands to avoid http://forum.pcmech....de-inside.html#

NB: Cheap modular PSUs are an accident waiting to happen, some comparisons for you http://www.newegg.co...h=1&srchInDesc= and cheap http://www.newegg.co...vatedMark=False

[panthertooth]

So your telling me that These PSU's which 3 out of 4 are on the "top quality PSU's" are not good modular PSU's and are an accident waiting to happen ?

[phillpower2]

So your telling me that These PSU's which 3 out of 4 are on the "top quality PSU's" are not good modular PSU's and are an accident waiting to happen ?

I would hardly say that those PSUs are "cheap"
Examples of "cheap modular PSUs" http://www.newegg.co...vatedMark=False compare the outputs and prices at the two links.

[panthertooth]

I wouldn't have thought of those as "cheap" either but in your post

NB: Cheap modular PSUs are an accident waiting to happen, some comparisons for you http://www.newegg.co...h=1&srchInDesc=

The way it was worded would lead me to believe you was showing me a comparison of Cheap modular PSUs

So would you recommend This PSU

[phillpower2]

My apologies, I understand the confusion now - I did not attach the second link in my reply #5 (done now)

Yes that is a very good PSU, plenty enough output, efficiency and connections

[panthertooth]

Being a former (hopefully active again soon) student of GEEKU, have to look out for proper wording

Now i know this is not corsair but looking into the future with possible further upgrades what would you say about This PSU, It meets the standards, 80% certified, active PFC, has ample voltage on the 12V rail and is the same price as the corsair (which is in my budget)

[phillpower2]

Personally I would stick with the Corsair as not all Thermaltake PSUs meet the performance claims, see the test figures @ http://www.realhardt...vos/Page680.htm + some further information @ http://www.10stripe....d/psu/brand.php