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Power Supply Requirments for EVGA GTX 260

mentalcrisis00

mentalcrisis00

Senior member
I'm thinking about buying this EVGA GTX 260 216 core from newegg but i'm concerned about having to buy a new powersupply.

Right now I'm running an Enermax Noisetaker 485W with two 12 volt rails at about 40 amps, the specs on EVGA's site state that a 500W with 36 amps is required, would my PSU just make it? The rest of my hardware is in my sig, I only have 2 hard drives. My supply only has one PCI Express connector as well, would it be ok to use the molex to 6pin adapter?
 
How old is the PSU?


You should be fine. They overestimate power usage. I peak at around 550 (from the wall) with my power hungry rig.

There are some inexpensive decent PSUs with more power and 2 6pins out there as well.
 
ya I have looked on newegg, i can get a modular OCZ fatality 550W for 40-50 bucks but I'd like to keep my power supply if I can just so I don't have to spend that much more on it. I've had the power supply threw 2 systems I guess it's about 4 or 5 years old now.
 
You'll be fine. Nvidia's 36A requirement seems a bit high. They are probably factoring in a quad core processor that is overclocked with that requirement.
 
im using gigabyte odin 550w for orginal gtx260, oc'ed q9450 1 ssd 3 hdd 8gb ram 2 dvd burners 4 case fans and the killawatt showing 180w idle and 240w loaded so i think you will be fine as long as your psu has 2x 6pins connectors
 
Originally posted by: OCguy
You should be fine. They overestimate power usage. I peak at around 550 (from the wall) with my power hungry rig.
Click to expand...

550w from the wall means what, 400-450w getting to your components? that seems remarkably low for an SLI setup, wow.
 
yes thats the one I meant, there are some others for $30 more that seem to be loads better. I'd just rather not have to tangle with replacing the power supply if I can help it. I've also been looking at the Sapphire 4870 512MB and was wondering if my current 485W psu could handle that card as I have heard it has higher heat and power draw than the comparative nvidia cardds.
 
you could run just about any single card off of that psu, including a GTX275 or 4890, which iirc draw a little over 200w (20a or so max). i might be wary of nvidia's super beefy cards or a dual core card, but otherwise, you're fine.
 
Originally posted by: mentalcrisis00
Right now I'm running an Enermax Noisetaker 485W with two 12 volt rails at about 40 amps,
Click to expand...

Your PSU actually has 32A on the 12V, the rails are not additive.
 
they generally overestimate their power usage. they don't know what people might have and don't want to be liable if they underestimate.

tdp for a gtx260 is 182w. that's assumably the most power it should ever pull without fear of going outside the bounds of the OEM cooler. some cards CAN exceed TDP, but it's generally only in crazy synthetic benchmarks. during gaming, you'll never need that much power.

that said, my initial rounded number of 200w equates to about 17a. if you've got twice that much amperage on your 12v rail, you should have more than enough juice to supply your other 12v components. the only other large consumer of 12v is your processor, which will in most cases will never exceed 50-100w. case fans and idle hard drives are fractions of an amp, spinning hard disks maybe a couple amps. so really, even dealing with maximum numbers that you'll never see, you're fine.
 
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