Watts needed for SLI?
This question may appear redundant but I am planning to build my first PC rig, and the last thing I want is not have enough power to run my computer.
I was looking at getting the GTX 560/ti and I checked the nVidia website and they said minimum power requirement is 450 W.
GeForce GTX 560 - Specifications - GeForce
My question now is, how do I calculate what the minimum power is needed when another GTX 560/ti is added?
In general, how do you calculate those ratios for future reference?
find out what the cards draws just for itself and add it ( they say 450 for the card and the rest of your pc and i always like to go a littler higher then what they say ) if it was me running sli 560's min would be a good 750 or 800 watter my2cents
650-750w would be plenty
Personally I would say 650w min for sli gtx 560 non Ti and 750 for sli gtx 560Ti.
Without knowing what the rest of your setup will be, I will say 650W should suffice. I run a hot old i7 with 460's in SLI and a 430 PhysX on a HX650W unit. THe 560TI's are only 10W higher TDP than my 460's so you should have no worries if you get a Quality 650 unit.
I guess you guys are all speaking from experience. I appreciate your reply guys.
And soultribunal, I am waiting for the new release for the ivy bridge, and planning to get the core i5 K series.
Correct me if I'm wrong, but the PC components that draws the most power would be the graphics card and cpu itself right?
According to my UPS I draw 488 at Full load so that should give a good baseline.
And if you are going IVY then you will have even less power consumption vs what I run.
Get yourself a good Quality unit and you should have zero issues.
Don't scrimp with the PSU. The difference in price from a 600 to 800 watt unit is so minimal,it's a waste getting anything less than 800 watts for SLI and any future add ons.
Well Slik, I do have tight budgets and was planning to spend around 100 dollars on a PSU unit, if not less. So I guess I am just looking for the "minimal" amount to fit the budget. And I am looking for a good quality brand like Corsair or XFX. Any other suggestion of good quality brand name for PSU?
If I had to choose:
Seasonic S12II 620W EPS12V 20/24PIN ATX Power Supply Active PFC 80+ Bronze 6+8PIN PCI-E W/ 120MM Fan - Seasonic Electronics - S12II 620
Corsair TX650 V2 650W ATX 12V Single Rail 53A 24PIN ATX Power Supply Active PFC 80PLUS Bronze - Corsair - CMPSU-650TXV2
XFX 650W PRO650W Core Edition Single Rail ATX 12V 53A 24PIN ATX Power Supply 80PLUS Bronze PSU - XFX - P1650SNLB9
With a 100 budget at least. 125-150 gets you a little higher up.
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