Does my pc have the necessary pins?

6+2 combines into an 8pin

This single Grfx cable is rated up to a 225watt Grfx card max; if you plan on 1080 then ok, if you plan 1080Ti > buy a new power supply for it

Per Seasonic

8pin and 6pin  implys  300W for the GPU.  Do you really believe that a 300W GPU will work fine with a 460W PSU?

My recommended upgrade for many Dells is 750W or more  AREA 51 units go from 850W up to 1500W for the SLI  2 or 3 GPU option aka 2X 1080 TI.  MSI GTX 1080 Ti Lightning requires 3x 8pin PCIE  implying 450W+ GPU power.

https://msi.com/Graphics-card/GeForce-GTX-1080-Ti-LIGHTNING-Z.html 

GTX 1050 1060 are fine with the 460W but its pushing things with 1070 and 1080 GPUS IMHO.  Motherboard power aka PCI-E slot power.

This is a SC 1080 power use during IDLE and Gaming.

My 8pin 6pin R9 290x is a 250watt card; dual 8pins could imply higher, for our purpose it's neither here nor there

when trying to place Vega64 or Ti into cart, you get a power incompatibility warning

1080s are a validated option, buyers receive or at least used to receive the 180watt TDP MSI Aero with x1 8pin, otherwise known as a vanilla 1080; this is what I had in mind when you asked if you had an 8pin, which you do

Obviously your power source has only one Grfx cable, which should let you know it's kind of weak

For 'factory overclocked aftermarket AIB cards, note the caution provided in new reply as well as Seasonic Chart

If shutdown / restarts occur with new card, you'll know why (weak power source). So which card did u have in mind?

8 PIN + 6 PIN or Dual 8 PIN Imply's 300W PCI-E power spec.  225W is Dual 6 pins plus 75W slot aka 150 + 75

The PCIe Card Electromechanical (CEM) 3.0 specification consolidates all previous form factor power delivery specifications, including the 150W and the 300W specifications.  This is not here nor there its Validated Specification.

The original poster, I believe, was given useful information in my 1st post, but we can converse if you like

AMD Radeon 295x2, a 500watt card that uses dual 8pins

295X2 has a TDP of 500 watts. If you do some simple math based on the PCIE specifications of power delivery, a PCI Express graphics card with two 8-pin power connectors is supposed to be limited to just 375 watts of power draw: 75 watts from the PCIe slot, 150 watts from each power connection. AMD has, as they put it, used some discretion with the standards

Information related to 375watt cards as above has been known for years now in this forum, TitanZ for example. 150watts spec per 8pin. I'm well aware of the cable connector & card requirements, but as we see, the specs are often flaunted by manufacturers, even by AMD. My original answer & chart were both suitable, & advised against a +225watt card

1080Ti FE specs: 250watt card, 8+6 (requires two Grfx cables), where 8+6 does not imply a 300watt card

EVGA.com screen grab > the SC you linked to? 180w x1 8pin?

1080 ok, 1080Ti avoid, I believe the information I put forth was adequate from the start

Do you really believe that a 300W GPU will work fine with a 460W PSU?

The 18Amp rail is designed to shut off after 216watts. So. No. The 850 itself is only rated by the Aliens for x2 300watt cards, the 460 is rated for or validated for a 1080, tops, not by me but by Dell, as I said. Avoid 225+ watt cards like 1080Ti. As I said. I'm done with this conversation if it's just the same to you

__________________

@Lukey

This photo was just sent to me 10minutes ago, EVGA G3 1000watt from BlackFriday sale; G3 850w is worth looking into, or the stock 850w + Aurora harness if you need something better now or later > example N1WJD + harness > https://www.ebay.com/itm/173029712654?ul_noapp=true

@Speed > your so-called game/set/match charts below in response to what I said up here are old news to me but may serve as new visual aids for others, which is good. If language & definitions are important to you as they are to me then you'll have to split the difference & agree that an 8+6 set-up can or may imply up to 300w

if an 8+6 implies 300watt power, then by your logic, 8+8 implies a 375watt card ...

I disagree. It makes this one a 215watt card

or is it 245

or is it 375

make up your mind

" 8+6 does not imply a 300watt card"  YES it DOES.    

8 pin = 150W 

6 pin =75W 

Slot =75W

150 + 75 + 75 = 300 = Game Set  Spec Match

One of the reasons 3.0 and 2.1 are not compatible with 2.0 and 1.0 are that the
Line code changed as well as the POWER SPEC.

@Luke > the way I read your post / question was thus: 'I have a 6pin card, I'm buying a new card that needs an 8pin, do I have one?' To which I answered yes, thinking you'd be after a 1080 that needs a x1 8pin. (Vanilla) 1080s are validated on the sales menu

If your candidate card is in fact an 8+6, and you thought to yourself 'my goodness, this cable has a 6 & some kind of 6+2, can they both plug in?', the answer's yes, they both can plug in - but - it's still just one cable when all's said & done which means it's limited in the amount of power it can dish out (216watts on that 18amp circuit breaker). The reality is that an 8+6 card is best suited to where the 8 gets its own cable & the 6 gets its own cable per the Connecting Chart I posted in my 1st reply; from there, your side label says the 460w is only rated up to 385watts max 12volt as it is, where certain CPU/Grfx card combos can overwhelm the power source > again, maybe a good time to explain which card you have in mind that you needed a fast reply to

The good news is that a more capable power supply is the type of upgrade that won't break your bank, & from there, if the card you've chosen makes the 460 shut off or restart (to remove the load) you'll know why > too much card for it. Basic 1080s are validated, exotic 1080s might be a pipe dream for now - if so? - remove the overclock on the card if possible or otherwise refrain from high-demand situations until you can upgrade the power source. Best advice: read up on the validated x1 8pin MSI Aero & stick with something equivalent. If you're after an 8+6 type of card, the Seasonic Chart was placed there for you for that reason, while other information you may or may not need exists here as well

> your basic 1080FE does this, I assume Aero is similar or would not be validated <

'overclocked FE'