8 pin connector for GTX 780?

[Muhammad Osama]

Hey guyzz.. sorry for my bad english .. 

 

i was getting a very good deal at gtx 780 founder edition from evga for 120$ .. it requires one 6 pin and one 8 pin connector.. but my dell 525 watt psu has only two 6 pin connectors.. now i need a solution without changing a power supply.. i also wanted to mention that my power supply has one molex connector too.. i have attached the pictures of my dell power supply.. please give me a solution which is less risky without changing a power supply.. i saw 6 pin to 8 pin adapters but i hear that it is very risky.. please help or if you can give me a suggestion of another alternative for gtx 780 then you can i will check it in my country online store and let you know the price of that ASAP ( because ebay and other famous websites doesn't support my country) 

 

overall specs.

xeon x5670 at stock speed.

8 gb ddr3 ram

525 watt power supply

[LukeSavenije]

does it have a two-pin? if not, you should get molex to 8pin

[d3athAdder]

GTX 780 has its minimum power specs to 600w. your power supply does not have a 8 pin cable because it cannot supply sufficient power on the 8 pin. 

You can still go ahead and use adaptor for 6 to 8 pin, but it will definitly cause instablity due to insufficient power in demanding games.

[NelizMastr]

The safest way to work around this problem is to get a 2x6-pin to 8-pin PCIe adapter and a molex to 6-pin PCIe adapter. The molex is likelier to supply the needed 75W than the 6-pins are supplying 150W over a single cable. 

 

That said, when a PSU doesn't have a certain connector, it's usually for a reason. While Nvidia's requirement is nowhere near representative, it's a good guideline.

[Jurrunio]

24 minutes ago, Muhammad Osama said:

a solution which is less risky without changing a power supply.

Using this PSU to power a GTX 780 is risky enough for the risks of 'solutions' to be negligible

 

1. Dont know what kind of wire's used for the 6pin connectors. For PSUs with 6+2 pin connectors the 6pin can easily handle 150w power draw (even more on daisy chained ones) and you don't even need an adapter (the extra pins are just ground, electrically you dont need them), but a PSU from Dell, that only makes prebuilts? I don't trust it able to go out of spec like that.

 

2. 4pin Molex to PCIe are dumb, more so if only a single 4pin molex is used. Each 4pin molex only has 1 12V pin, while each 6/8pin has 3. You risk overloading the 4pin molex with adapters unless you use 3 molex per PCIe power connector.

[Muhammad Osama]

51 minutes ago, LukeSavenije said:

does it have a two-pin? if not, you should get molex to 8pin

No it has not a two pin

[Muhammad Osama]

49 minutes ago, d3athAdder said:

GTX 780 has its minimum power specs to 600w. your power supply does not have a 8 pin cable because it cannot supply sufficient power on the 8 pin. 

You can still go ahead and use adaptor for 6 to 8 pin, but it will definitly cause instablity due to insufficient power in demanding games.

But will it fry my card?

[Muhammad Osama]

46 minutes ago, NelizMastr said:

The safest way to work around this problem is to get a 2x6-pin to 8-pin PCIe adapter and a molex to 6-pin PCIe adapter. The molex is likelier to supply the needed 75W than the 6-pins are supplying 150W over a single cable. 

 

That said, when a PSU doesn't have a certain connector, it's usually for a reason. While Nvidia's requirement is nowhere near representative, it's a good guideline.

Oh

[Muhammad Osama]

42 minutes ago, Jurrunio said:

Using this PSU to power a GTX 780 is risky enough for the risks of 'solutions' to be negligible

 

1. Dont know what kind of wire's used for the 6pin connectors. For PSUs with 6+2 pin connectors the 6pin can easily handle 150w power draw (even more on daisy chained ones) and you don't even need an adapter (the extra pins are just ground, electrically you dont need them), but a PSU from Dell, that only makes prebuilts? I don't trust it able to go out of spec like that.

 

2. 4pin Molex to PCIe are dumb, more so if only a single 4pin molex is used. Each 4pin molex only has 1 12V pin, while each 6/8pin has 3. You risk overloading the 4pin molex with adapters unless you use 3 molex per PCIe power connector.

With that said i think.. i should cancel the deal of 780

[LukeSavenije]

It won't fry your card. at least if it does, it wouldn't only fry your card, but also the whole system with it, but then you would already know that. you could be restricted by power limits, so a psu upgrade might be worth it

[LukeSavenije]

and a good tier 3+ psu isn't that expensive

[Tristerin]

FYI these PSUs in these workstations are ATX, and easily changed out.  But haven't you posted about this at least 1 or 2 other times?

[Mick Naughty]

System will just crash under load. Psu isn’t anywhere near enough for that card. 

[Muhammad Osama]

48 minutes ago, Tristerin said:

FYI these PSUs in these workstations are ATX, and easily changed out.  But haven't you posted about this at least 1 or 2 other times?

Only once but that topic was different so i thought i should create a new topic on this

[Muhammad Osama]

4 minutes ago, Mick Naughty said:

System will just crash under load. Psu isn’t anywhere near enough for that card. 

Oh ok

[Muhammad Osama]

49 minutes ago, Tristerin said:

FYI these PSUs in these workstations are ATX, and easily changed out.  But haven't you posted about this at least 1 or 2 other times?

So if i search atx power supplies on internet then can i find it?

[Tristerin]

Just now, Muhammad Osama said:

So if i search atx power supplies on internet then can i find it?

You have a T3400?

[Tristerin]

2 minutes ago, Muhammad Osama said:

So if i search atx power supplies on internet then can i find it?

 

1 minute ago, Tristerin said:

You have a T3400?

Pretty sure that's what you said prior, so yes you can replace this PSU with any ATX PSU on the market.  The biggest difference is that you wont be able to use the cables currently in use in your system because they are a stand-a-lone unit for that PSU only (modular but only 1 module for the entire mass of wires).  So you will have to reroute all the cables in the system (not hard, take one out, replace it.)

 

Me personally, I would take the risk.  If I couldn't risk losing this system, then I would replace the PSU.

 

I would link you PSU's but iirc you don't have Ebay, Newegg etc in your country.

[Muhammad Osama]

7 minutes ago, Tristerin said:

You have a T3400?

I have a t3500 but the powersupply with that has only one 6 pin so i changed the power supply with my t3400 

[Tristerin]

1 minute ago, Muhammad Osama said:

I have a t3500 but the powersupply with that has only one 6 pin so i changed the power supply with my t3400 

I haven't familiarized myself with the 3500 yet, but if it fit the 3400, than its the same thing - any ATX PSU can replace it.

[Muhammad Osama]

5 minutes ago, Tristerin said:

 

Pretty sure that's what you said prior, so yes you can replace this PSU with any ATX PSU on the market.  The biggest difference is that you wont be able to use the cables currently in use in your system because they are a stand-a-lone unit for that PSU only (modular but only 1 module for the entire mass of wires).  So you will have to reroute all the cables in the system (not hard, take one out, replace it.)

 

Me personally, I would take the risk.  If I couldn't risk losing this system, then I would replace the PSU.

 

I would link you PSU's but iirc you don't have Ebay, Newegg etc in your country.

I was planning to take the risk but i m worried because 780 is a power hungry card .. i think i have to create a new topic and write my budget and restrict them to offer me a two 6 pin card or less

[Muhammad Osama]

1 minute ago, Tristerin said:

I haven't familiarized myself with the 3500 yet, but if it fit the 3400, than its the same thing - any ATX PSU can replace it.

They are litrally same just the main difference is the hard drive mount and the mother board shape

[Tristerin]

1 minute ago, Muhammad Osama said:

I was planning to take the risk but i m worried because 780 is a power hungry card .. i think i have to create a new topic and write my budget and restrict them to offer me a two 6 pin card or less

Ive never had a card that was underpowered do anything to my systems, other than showing a boot up error that the card isn't being powered - but still boots and goes into Windows because it just uses it as a VGA passthrough.  Thus the reason I have said it should work but if its a risk you don't want to take then don't take it

 

Remember you have a budget, and LIMITED cards at your disposal to pick through so you may not have that option

[Muhammad Osama]

1 minute ago, Tristerin said:

Ive never had a card that was underpowered do anything to my systems, other than showing a boot up error that the card isn't being powered - but still boots and goes into Windows because it just uses it as a VGA passthrough.  Thus the reason I have said it should work but if its a risk you don't want to take then don't take it

 

Remember you have a budget, and LIMITED cards at your disposal to pick through so you may not have that option

I m really confused now what to do

[Mick Naughty]

Isn’t too difficult. Get the card and not be able to use it to its potential. Or get another power supply. Or get a more efficient card.