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Tom's Hardware > Forum > Graphics & Displays > Nvidia > MSI GTX 560 TI TWIN FROZR II PSU Enough?

MSI GTX 560 TI TWIN FROZR II PSU Enough?

Forum Graphics & Displays : Nvidia MSI GTX 560 TI TWIN FROZR II PSU Enough?

Hi,

I plan to get a GTX 560 TI MSI twin frozr ii.Can someone tell me if my PSU is fine?It says it wants 30A max and i cant see how Amps i have.Can someone calculate my amps of my psu?

PSU Link : http://hecgroupusa.com/products/sw [...] y/win550ub

Overclock : Yes to GPU ( 950 / 1GHZ on core )

PC SPECS ( Now ) :

CPU : i5 2500k Stock
GPU:Gainward GTX 460 768MB
Motherboard:GIGABYTE PH67A-UD3-B3

Thanks . :hello:

Reply to truexgaming

Ignore this post.

Message quoted 1 times
Message edited by Helltech on 12-14-2011 at 12:52:42 PM

It should be technically fine, but I never see such PSU on how it performs. But it should work by the specification.

Message quoted 1 times

Reply to refillable

Helltech wrote :

You have 35 combined amps on the 12v rails. It should work, even with that said I can't promise a PSU of that quality will work, but theoretically it should be fine.

Ok how did you calculated it? So i dont ask again

Message quoted 1 times

Reply to truexgaming

refillable wrote :

It should be technically fine, but I never see such PSU on how it performs. But it should work by the specification.

Yh its a great cheap PSU its 70% efficient and it does work very good with my GTX 460.The cooling is just superb

Reply to truexgaming

truexgaming wrote :

Ok how did you calculated it? So i dont ask again

It shows the 12v rails right on the page you linked. At the bottom.

Thought you can't just add up the two numbers ?

Message quoted 2 times

Reply to robjordy

robjordy wrote :

Thought you can't just add up the two numbers ?

You're right, disregard my first post. It's 5 AM here wasn't thinking.

Message quoted 1 times

robjordy wrote :

Thought you can't just add up the two numbers ?

Robjordy...! I can't believe you are back. Where have you been these days?

Reply to refillable

Helltech wrote :

You're right, disregard my first post. It's 5 AM here wasn't thinking.

So whats the amps finally ? Please help !

Message quoted 1 times
Message edited by truexgaming on 12-14-2011 at 01:14:36 PM

Reply to truexgaming

@ refillable ; been feeling sorry for myself ; i will loose my job at 01-01-2012, because otherwise they have to change my contract from a one year contract to a indefinite contract, and they won't do that. Fu..ers !

@ truexgaming ; can't remeber what the calculation is to sort out how much amps there are in total. Something with volts : watts = amps or watts : volts, aaaaaah can't remember, i'll try to find out.

Reply to robjordy

Ok someone hurry up and tell me fast !

Reply to truexgaming

The total wattage available for the 12V rail is the rated capacity of the 12V source in watts, dividing that by 12V tells you how much current is available from the 12V rails.
From ; http://www.tomshardware.co.uk/foru [...] iple-rails

So in your case ; it says the combined power is 240W, 240 : 12 = 20A ????? That can't be right, can it ? Help ; someone smarter than me please !!!!

Maybe open your case and look if there is a sticker on the side of the psu, it often states the combined power from the +12V rails.

Reply to robjordy

truexgaming wrote :

So whats the amps finally ? Please help !

Long answering time sorry For keeping on waiting
I don't know what but isn't it suppose to be like this?:

+12v1: 17A -> 204W = For CPU, NorthBridge and SouthBridge
+12v2: 18A -> 216W = For other main peripherals except CPU, NorthBridge and SouthBridge (Including GPU)

Sorry If I am wrong, but I think the PSU will be enough.

Robjordy so sad...

Message edited by refillable on 12-14-2011 at 01:49:09 PM

Reply to refillable

Here it states it has 35A, getting more puzzeld by the minute. http://www.pcstats.com/articleview.cfm?articleID=1818.

I can't believe with two rails from around 18A the combined output is 20A, normally you can add the rails up and take a couple of amps of, so it should be around 30A anyway.

Reply to robjordy

Ignore

Message edited by truexgaming on 12-14-2011 at 04:35:18 PM

Reply to truexgaming

Does overclock increase amps anyway?

Reply to truexgaming

Yes it is 35A i found that too from their company maybe for some PSU's adding the two rails is just an option?If its gets burned i will get a Corsair 850 Thanks for the help

Message edited by truexgaming on 12-14-2011 at 04:37:37 PM

Reply to truexgaming

Another proof is that GTX 460 768MB needs 24A so if my PSU was 20A it would be dead.

Problem solved

Reply to truexgaming

Dead as a, euh, whatever.

I know the 20A can't be right, still would like to know where i went wrong with the calculation though. :heink:

Reply to robjordy

I was under the impression that to calculate the amount of Amps needed on the 12v rails you took the total 12v current (in this case adding 18A and 17A to get 35A).

Then you look at the total wattage required to run just the GPU (usually under full load) and divided that by 12 to get the amount needed on the 12v rails to adequately power the GPU.
The total wattage the TWIN FROZR II according to the below article is 157w under full load.
http://www.techpowerup.com/reviews [...] II/21.html

So dividing 157 by 12 we get 13.08A necessary for the GPU alone.

i5-2500k TDP is 95W/12 = 7.92A

Lets add 5A to be in the safe zone.

Finally add in motherboard power draw, RAM, hard drive...it's about 1A-2A, but make it 3A to be 200% safe.

Adding all that up we get 29A on the 12v rails required to run your proposed setup.

Considering that your PSU has 35A on its 12v rails, you should be fine.

Reply to yamman101

No. It's HEC. It's not a reliable company and probably won't give the supposed amps. I wouldn't it'd be too big of a risk and might end up damaging your computer.

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------------------------------ i5 2500k at 4.6GHz (1.376v) Hyper 212+ ,
Gigabyte Radeon 6850 (910/1150/1.149v) ,
MSI Z68A-G43 (G3) , 4GB DDR3 1600 G.Skill ,
500GB Seagate Barracuda 7200 , OCZ Fatal1ty 550w , Antec 300 Illusion
Reply to samuelspark

samuelspark wrote :

No. It's HEC. It's not a reliable company and probably won't give the supposed amps. I wouldn't it'd be too big of a risk and might end up damaging your computer.

Bull*** it runs very good with my GTX 460 768MB .I maybe can afford a new PSU ( a 500w corsair builder series one) but it delivers the same. So how can i test it if it can lift the power without damaging anything? Getting a same psu with same amps but different company is not good to me . But why not test it first ? Since HEC for me is astonishing since now.

Message edited by truexgaming on 12-14-2011 at 06:28:22 PM

Reply to truexgaming