Will this power supply be enough to run a 780 TI?

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Warleader165

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So it can run it? all i'd have to buy would be a 6 pin to 8 pin adapter...

 
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superninja12

superninja12

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don't ever use adapters this is a really bad idea.
source: poweruspply master sr 71 blackbird, from toms hardware.
 
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Karadjgne

Karadjgne

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Don't confuse TDP with power consumption. TDP is the amount of heat in watts put off by the actual gpu. Has nothing to do with the power also used by the dram, fans, vrm etc. If you figure power requirements at the max the connectors are good for, you'll probably be not far wrong. So a 780ti needing 2x8pins can ostensibly use 375w, 150 from each connector and 75 from the pcie. Also to consider is exactly what card. Gigabyte top line cards generally use considerably more power than reference cards.

Recommended wattage for a 780ti is 600w. It'll run on a quality 550w, but best bet is a quality 650w since there really aren't any quality 600w units and it's better to have headroom for OC or additions than stretch a 550w capabilities.
 
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Warleader165

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https://www.amazon.com/StarTech-Express-Power-Adapter-PCIEX68ADAP/dp/B001TK3TJY?ie=UTF8&*Version*=1&*entries*=0 - This is all i wold need since all i have is 2 6 pins, how would it be bad? :/

 
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Warleader165

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I have a 620 watt psu, so it'll be fine if i use a 6 pin to 8 pin adapter? thanks
 
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Ironsounds

Ironsounds

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Hello... The current draw @12Vdc, will very as to the Work/APP you are using... The GTX 780TI is a going to be a current/amperage HOG if you run it that way (375W, 31.25 amps)... the PS and Adaptor will allow you to use them together... It may Not be the "Best Practice" for use, and a different PS and 2-8pin will be "BEST Practice""... it's up to you to determine what safety margin and the costs required to get this, for your typical use.
 
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superninja12

superninja12

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your power supply is junk and should not even be used at all.
despite it is working doesn't mean it is already decreasing the lifespan of your other components, if u ar going to pair it with a 780 ti or other high end card your psu will likely guaranteed explode.
 
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Ironsounds

Ironsounds

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Hello... I have never seen an PS explode in my 36 years of using/replacing them... typically the component under extreme thermal pressure is going to open or short, and you could see a brief moment of sparks, flame, smoke pushed out by the fan... So I would consider this a "Horror-fiction" theory.
 
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Warleader165

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:p i also forgot to mention the card is a gtx 780 ti SC evga verison. Itll still be ok to use a 6 pin to 8 pin adapter correct? im not looking to overclock anything else

 
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Warleader165

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I have so many people telling me different, :/ just dont want to waste a good gpu. Just wanted to know if using a 6 pin to 8 pin will be ok even if the 780ti is the evga SC

 
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Ironsounds

Ironsounds

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Hello... 2) What APPS are you going to run with it? (a lot of EYE Candy?)
3) extremes games settings? ( Run every thing at MAX Graphics?)

Once again it a safety margin that EVGA put on the VIDEO cards... 2-8pins. Also people put a safety margin on PS ratings and brands... and other people just start creating facts/theories, that have NO electrical knowledge, equipment or experience testing and measuring these ratings/numbers.
 
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Warleader165

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Just gaming really, i would like to play with decent fps and still have good graphics, just depends on the game really.

 
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Ironsounds

Ironsounds

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Hello... OK... so you own it already... Good... sure get the adaptor and the GTX780TI and have some fun.
5) After a day of typical gaming... take a look and also smell... around your connectors, PS... AND also touch around your PS for unusual or extreme heat there... as a "safety procedure"
Since you Own the PS already... go ahead and use with your new card. B )
 
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Warleader165

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ty :D i recently figured out aswell i can use a sata to 4 pin connector to power the cpu i have and use my other 2x 4 pin connectors and just buy a 2x4 to 1x8 pin connector, would that be alot safer?

 
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Ironsounds

Ironsounds

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Hello... Maybe... the Molex/SATA to Pcie 8-pin might put them on a different "LOWER?" output or current rated circuit... B /
6) I would go for the 6 to 8pin Pcie as MY first choice here... AND keep an EYE on it... as a "Safety Procedure" (discoloration of the Yellow wires) B )
 
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Karadjgne

Karadjgne

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Normally a decent 620w would be enough, but in this case, that power supply is massively underpowered on the 12v rail and overpowered on the 3.3v and 5v rails which is what's used mainly to make up that 620w. A 780ti should be powered by a psu capable of somewhere around 42amps on the 12v. My seasonic 520w is capable of 40amps. Your 620w is stated at 20amps. That combined with the massive low voltage rails just screams very,very old design, back from before gpu's started to need large amounts of amps on the 12v rail. It won't power a 780ti in a pc at anything more demanding than idle, if it even powers up at all. Sorry, but that psu is good only for the lowest rated gpu's such as a 750ti or gtx950. I'd not even be tempted to use anything more demanding. It's a foregone conclusion that pushing that psu close to maximum load will cause damage.
 
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bignastyid

bignastyid

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Using that PSU to power a 780Ti would be ill advised. Its low quality and poses a danger to the other components in the system. It's not just about how much power it can deliver, it needs to be able to deliver that power cleanly, poor voltage regulation and ripple WILL damage hardware.
 
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Ironsounds

Ironsounds

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Hello... 7) Can you post a Picture of the "electrical label" on your PS please?
8) How long have you Owned/used the PS?
9) What are the other components you are currently using with this PS? CPU/GPU/MB/drives

The GTX780Ti has the ability to take down a many Power Supplies for sure... it's up to your Graphics settings... with Great Power takes Great Responsibility... Some people brag about reducing a Component to a early death, ( I've had a few chiefton PS's that spit out sparks ) and Some people can live on the edge of components limits (Auto racing, Over clockers)... As others have stated here, You could be operating in a Danger Zone.

Basically Temperature kills a component, this can be from Over current, Over voltage, materials, workmanship or just a higher ambient air temperature... My experience is, if the Power Supply fails you JUST repair it OR replace it, And I have not had multi-component failure or explosion experience when theses events happen. I have worked for two world class manufacturers and have installed, built and maintained High/Low voltage, High/Low Current, Custom, OEM Power Supplies of varying types and purposes, in high ambient, Dirty, and Fast production processes.
Your PS WILL die someday, for what ever reason, BUT understanding the LIMITs and proper maintenance of them can prolong the life of them for years.

Another option is to DownClock the card, SO as too put a Firmware Speed (bump)/Power block on it... this could also be done with the APP/OS software... if you feel your want to create a personal "safety margin" when using the card with the PS.

Is having a GTX780 TI worth the experience in life to YOU? or are you going to let that PS in your case hold that experience back in your memories?
... do you feel lucky kid... Well do ya? ~Dirty Harry
 
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