Extremely Urgent GPU Buying Advice Needed ::::::

redfaction95

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Hi guys, just buying a Used msi R9 280x from amazon and I have a very short time (till tuesday, on tuesday the order will be placed) for confirming the legitimacy of the card as I have already paid full payment to a local person for the card (who owns a premium amazon account has a very good rep in this business)
Actually I live in Asia while the card is in New York America

Here is the Direct Link to Pups Discount Electronics :-
http://www.amazon.com/gp/offer-listing/B00FR6XPL8/ref=dp_olp_used?ie=UTF8&condition=used&m=a3vafv3mbmc0pv

Here is the picture:-
ThcGWcw.png
 
Solution
No; that is not what I said. A quality 600W PSU outputs way more than 39A on the +12V rail. Your PSU is just crap. For example, a XFX 550W PSU outputs 45A on the +12V rail.

Outside of running benchmarks yourself, there's no way to tell exactly how much it can output under load. You need some good equipment to do that and they are not cheap. It's best to look up reviews on them instead, but not every PSU ever manufactured have been reviewed, so it's a tricky subject.

I calculated those numbers for your PSU but it's quite possible that it's less. I highly doubt it would be more.

The fact that it says max output is 500W on a 600W PSU is already crap.

redfaction95

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Yes, you are right but they are usually the cards used for mining and hence they are stressed out 24/7 and used continuously, I also have read somewhere that they usually have artifacts..
 

redfaction95

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Yea, new ones are better but you know where I live, the price of a $230 card comes out as $265, so the card that i have stated in the first post is $265 at my house.
The sapphire one would cost around $300 (at my place).
 

redfaction95

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NO, i said the card that I want to buy (the amazon link i gave in first post^^) is in US (New York), while I live in Asia and have to pay custom duty on importing things from other countries, and you know thats why the price of MSI R9 280x 3g in our country's loacal authorised msi market is $410....and yes, you won't believe it. :)
 

redfaction95

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Damn, got a pretty tight situation here, if any one can guide me through, I have a 600W PSU thermaltake litepower and i have been using it with a 8800gtx and then 560ti I never saw the psu's specs before today and here it goes:-

http://www.thermaltake.com/products-model.aspx?id=C_00001775

^^Scroll down for output specification table, and i have double checked the specs on my psu's spec sheet
It has a 12V rail @ 25A max and the 280x requires 30A

http://forum-en.msi.com/faq/article/power-requirements-for-graphics-cards

Though I ran my 560ti 31A and 8800gtx 30A on it totally fine......
So till tuesday I can CHANGE the order to gtx760 brandnew msi one @ $229 free shipping but that also wont help bcz it is also rated at 30A and I can not go lower than a 760.
Any help would be appreciated ASAP
Thanks :)
 
Looks like a bad power supply. A power supply rated at 600W only outputs a max of 500W? Does it even output 500W? I can't find any reviews on it.

At 500W, the total ampere rating on the +12V rail would be ~28A.
At 600W, the total ampere rating on the +12V rail would be ~39A.

Assuming the above is true, it can power up the card and maybe a HDD. Absolutely no room for overclocking. But of course, I am not assuming the above is true. It probably outputs less than that.

If you ask me, I don't trust it and I highly recommend replacing it. For a single R9 280X, try a XFX 550W. Of course, I don't know if that's available in Asia. If you have links to sites you can buy from, I'll pick out some for you. How much is shipping to Asia on Amazon.com?
 

redfaction95

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Our Currency is PKR, to get a USD equivalent for PKR, just simply divide the PKR by 100 and you will get the USD amount,
for example if a gpu is PKR 24,499 it will be USD 244.99 , just simple as that. And these are the full final prices at which I get the product at my doorstep.

Here is for PSU prices:-
http://www.iamextreme.net/computers/power-supplies-in-pakistan.html

Here is for GPU prices:-
http://www.iamextreme.net/computers/graphic-cards-amd/radeon-r9-series-in-pakistan.html?dir=desc&limit=25&mode=list&order=price

And btw it supplies 600W at peak and 500W at steady... and there are 2 12volt rails @25A and @20A
And it was really weird to hear that why it say 600W
 

redfaction95

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Yeah thanks for your time :)
And can you please tell that if I want to upgrade the psu after 2-3 months, is (my current power supply) ok for it because I have ran out of budget for now as you know that 265$ for a used 280x is already too much, if you can help me out for researching more about my current PSU, it would be very helpful, I will not be overclocking my CPU or RAM or even GPU.
Anyway I bought the PSU in 2011. and it is silver/white, but if you go to thermaltake website and search for my current PSU, you will get this:-
http://www.thermaltake.com/Litepower_Series/Litepower_Series_/Litepower/C_00001858/Litepower_600W_/design.htm
I really don't know that is that a new version of the same model or what, it looks cosmetically the same (except colour) and in the specs it says that its 40A on 12V rail...
And also it is a bit confusing, the link to my psu in the previous post leads to a chart which has separately stated ratings of 2 12v rails one @25A and the other @20A ....., so its very complicated round here, do you have any words on it...?
 

It should be fine. Limit to one or two HDD or SSD max. A R9 280X requires at most 21A. The GPU won't be running at full power the whole time, so hopefully it won't have to use up all 21A. If it does, limiting other components from using the +12V rail would be preferable. That means storage drives and optical drives. Also, the CPU is also powered by +12V rail as well. It's definitely a close call.



40A is plenty if it actually provides 40A. But I would play it safe until you get a better power supply. It's not uncommon for bad power supplies to not output their advertised current. It's very common actually. That's why there are manufacturers out there that we recommend over others.



They split it from a single rail to a multi-rail. It's not a big deal. It's actually to protect the power supply. So instead of using one rail at a high 40A, they split it and cap each rail.
 

redfaction95

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That's a way way helpful reply. :)
BTW My complete PC specs are:-

Monitor: SAMSUNG S22B300 1080P
CPU: CORE i5-2500K (Near to stock i.e 3.7ghz @all cores on turbo)
Cooler: HYPER 212+
Motherboard: GIGABYTE Z77x-UD3H 1.1
Memory: XMS3 2X2 GB 1600-MHZ
GPU: MSI 280x (When it arrives)
HDD: SP C70 120GB SSD + WD BLUE 500GB HDD
Chassis: THERMALTAKE V3
PSU: THERMALTAKE 600W
Soundcard: BUILT-IN
Optical drive: Disengaged 24/7 until I need it (sometimes once in the whole year :p )
Fans: Only 2 (1x90mm and 1x120mm low power)

And 12volt1 @ 25A + 12volt2 @ 20A makes up as 45A .....no?
 

Of course not. Rails are not addictive.

As my earlier post mentions, the total ampere on the +12V for your PSU are:
At 500W, the total ampere rating on the +12V rail would be ~28A.
At 600W, the total ampere rating on the +12V rail would be ~39A.


That is assuming the PSU outputs the advertised amount, based on its stats. Peak wattage means nothing. The PSU cannot run at peak for prolonged period of time.
 

redfaction95

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Ok, so I got it, you are saying that a 600W PSU must output 39A mathematically, and the fact that it can deliver the calculated rating depends on its efficiency or quality.
So is there any way of knowing that my PSU is delivering what it should?
And after all my PSU is practically a 500W one :(
 
No; that is not what I said. A quality 600W PSU outputs way more than 39A on the +12V rail. Your PSU is just crap. For example, a XFX 550W PSU outputs 45A on the +12V rail.

Outside of running benchmarks yourself, there's no way to tell exactly how much it can output under load. You need some good equipment to do that and they are not cheap. It's best to look up reviews on them instead, but not every PSU ever manufactured have been reviewed, so it's a tricky subject.

I calculated those numbers for your PSU but it's quite possible that it's less. I highly doubt it would be more.

The fact that it says max output is 500W on a 600W PSU is already crap.
 
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redfaction95

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Just bought the card, msi 280x, confirmed from the seller about its condition and that its not been in used for mining.....got a positive reply, the card will arrive on 15 Aug
Now I just want to know that which series in corsair is good in quality, I dont want anything bigger than 650W
Or should I buy seasonic, I will be buying anything after 3 months
 

redfaction95

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Can I ask a simple question...?
As I mentioned earlier that my PSU has separate 12v rails, one is @25A and other @20A, so I was asking that is this a good idea that I use a 2x 4pin molex to 6pin to power the GPU?

Actually as 280x has an 8pin and a 6pin connector requirement, and my PSU also has an 8pin and a 6pin also, so I should leave my PSU's 6pin as it is unplugged and plugin the 8pin one into the card + 2x 4pin molex to 6pin, will it then be providing good Amperes...?
 
That is stupid. Why would you do that instead of using the existing 6-pin? It provides the same amount of ampere, assuming your PSU is adequate. We already had this discussion (rather lengthy already) about the quality of your PSU so I won't get into that again.

In case you were wondering, the +12V rails are designed into the circuit board, not per wire. It has nothing to do with what you were thinking.
 

redfaction95

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Ok sorry
I thought that the amperes are distributed to different connectors due to the separate rails cap.
 

redfaction95

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I have now got a budget to replace my PSU, I have 110$ for it, and corsair GS600 and GS700 are available at the authorized store we have here for 80$ and 100$ (I will confirm there availability on Monday, have already sent them mail)
personally I am interested in GS600 one as it is enough for me, just wanted to know your views on these GS series 2013 edition, is it worth a shot, if you say I will buy it on Monday.
And yes there are some other ones available locally like thermaltake 730W xigmatek centauro and tauro and corsair VS series, I have checked, their specs, they are not good. GS seems more good as it can provide 48A on single 12v rail.
I have not plugged in my 280x yet.