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Muhammad Osama

8 pin connector for GTX 780?

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Posted · Original PosterOP

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

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


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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.


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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.


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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.


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Posted · Original PosterOP
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?

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Posted · Original PosterOP
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

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Posted · Original PosterOP
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 :(

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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


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


PSU Tier List 4.0//Motherboard Tier List//Community Standards//ATX Specification//Group Regulation//Topologies and Regulations//How many watts?//PSU Protections

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Primary PC:

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CPU: I5-8600k 5.0ghz

GPU: GTX 1070 ti EVGA SC Gaming

RAM: 2x8 3333 mhz DDR4 Trident Z

MOBO: MSI Gaming Pro Carbon AC

HDD: 1 TB 7200 RPM Seagate Baracudda, 1 TB 5400 RPM Samsung Spinpoint HD103SI

SSD: Samsung 860 EVO 500 GB

Case: Cooler Master Masterbox Lite 5 RGB (modified)

PSU: Seasonic Focus GX650

 

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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?


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


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Posted · Original PosterOP
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

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Posted · Original PosterOP
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?

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Just now, Muhammad Osama said:

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

You have a T3400?


Workstation Laptop: Dell Precision 7540, Xeon E-2276M, 32gb DDR4, Quadro T2000 GPU, 4k display

Ryzen Rig 2: ASrock B450 Pro4 ATX, Ryzen 7 1700 @ 4.2ghz all core 1.4vCore, AMD R9 Fury X w/ Swiftech KOMODO waterblock, Custom Loop 2x240mm + 1x120mm radiators in push/pull 16gb (2x8) 3600mhz V-Color Skywalker (or 4x8gb DDR4 2666mhz for large tasks), Corsair HX850 PSU, 128gb Patriot Scorch NVMe Win 10 boot drive, 500gb Samsung 840 EVO SSD, 512GB TeamGroup MS30 M.2 SATA III, CoolerMaster HAF XM Case.  Zalman K600S keyboard, Zalman ZM-GM1 mouse, Hannspree HF207 and Acer AL2016W monitors

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https://www.3dmark.com/3dm/37628874?

Dwight: The Mixed Metals Loop Media Center.  Ask me about it.  Currently decommissioned to move to an mATX setup on a new MOBO once I pick one out (getting its facelift as of June 2020 have new air cooler, drives etc.  About 60% finished.  Will no longer be a closed loop system.

Schrute: ASUS M5A99FX Pro R2.0, FX 8350, Sapphire R9 Fury Tri-X Nitro 4gb HBM, 16gb (4x4) Corsair Vengeance DDR3 1600mhz, Sparkle/FSP 650w PSU, Corsair H100i GTX 240mm AIO w/ 12mm thick fans to fit in top exhaust, 256gb TIMETEC SSD, 1tb WDBlack HDD, Rosewill Nautilus 1.0 case.  DSI 90-Key Mechanical Keyboard w/ Cherry Red switches, Generic mouse, 37" 1080p TV

Micro Form Factor Dell OptiPlex 3040: Dell 0MGK50 A02, i3-6100T, 2x4gb DDR3 1600, Team Group 120gb SSD, 500gb Seagate 7mm HDD attached storage, Windows 10 Pro, Logitech K400+, USB Wifi adapter all vesa mounted to the back of a 37" 1080p TV for form factor in the kitchen

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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.


Workstation Laptop: Dell Precision 7540, Xeon E-2276M, 32gb DDR4, Quadro T2000 GPU, 4k display

Ryzen Rig 2: ASrock B450 Pro4 ATX, Ryzen 7 1700 @ 4.2ghz all core 1.4vCore, AMD R9 Fury X w/ Swiftech KOMODO waterblock, Custom Loop 2x240mm + 1x120mm radiators in push/pull 16gb (2x8) 3600mhz V-Color Skywalker (or 4x8gb DDR4 2666mhz for large tasks), Corsair HX850 PSU, 128gb Patriot Scorch NVMe Win 10 boot drive, 500gb Samsung 840 EVO SSD, 512GB TeamGroup MS30 M.2 SATA III, CoolerMaster HAF XM Case.  Zalman K600S keyboard, Zalman ZM-GM1 mouse, Hannspree HF207 and Acer AL2016W monitors

https://www.3dmark.com/3dm/37004594?

Ryzen Rig 1: ASUS B350-PRIME ATX, Ryzen 7 1700, Sapphire R9 Fury Tri-X Nitro 4gb HBM, 16gb (2x8) 3200mhz V-Color Skywalker, ANTEC Earthwatts 750w PSU, MasterLiquid Lite 120 AIO cooler in Push/Pull config as rear exhaust, 250gb Samsung 850 Evo SSD, Patriot Burst 240gb SSD, Cougar MX330-X Case.  Zalman K600S keyboard, Zalman ZM-GM1 mouse, Acer XF270HU 2560x1440 144hz IPS monitor

https://www.3dmark.com/3dm/37628874?

Dwight: The Mixed Metals Loop Media Center.  Ask me about it.  Currently decommissioned to move to an mATX setup on a new MOBO once I pick one out (getting its facelift as of June 2020 have new air cooler, drives etc.  About 60% finished.  Will no longer be a closed loop system.

Schrute: ASUS M5A99FX Pro R2.0, FX 8350, Sapphire R9 Fury Tri-X Nitro 4gb HBM, 16gb (4x4) Corsair Vengeance DDR3 1600mhz, Sparkle/FSP 650w PSU, Corsair H100i GTX 240mm AIO w/ 12mm thick fans to fit in top exhaust, 256gb TIMETEC SSD, 1tb WDBlack HDD, Rosewill Nautilus 1.0 case.  DSI 90-Key Mechanical Keyboard w/ Cherry Red switches, Generic mouse, 37" 1080p TV

Micro Form Factor Dell OptiPlex 3040: Dell 0MGK50 A02, i3-6100T, 2x4gb DDR3 1600, Team Group 120gb SSD, 500gb Seagate 7mm HDD attached storage, Windows 10 Pro, Logitech K400+, USB Wifi adapter all vesa mounted to the back of a 37" 1080p TV for form factor in the kitchen

Linux Box: Toshiba Laptop, i7 620M, NVS graphics, 4gb ram tinker toy at the moment.  Running Manjaro XFCE at the moment.

 

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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.


Workstation Laptop: Dell Precision 7540, Xeon E-2276M, 32gb DDR4, Quadro T2000 GPU, 4k display

Ryzen Rig 2: ASrock B450 Pro4 ATX, Ryzen 7 1700 @ 4.2ghz all core 1.4vCore, AMD R9 Fury X w/ Swiftech KOMODO waterblock, Custom Loop 2x240mm + 1x120mm radiators in push/pull 16gb (2x8) 3600mhz V-Color Skywalker (or 4x8gb DDR4 2666mhz for large tasks), Corsair HX850 PSU, 128gb Patriot Scorch NVMe Win 10 boot drive, 500gb Samsung 840 EVO SSD, 512GB TeamGroup MS30 M.2 SATA III, CoolerMaster HAF XM Case.  Zalman K600S keyboard, Zalman ZM-GM1 mouse, Hannspree HF207 and Acer AL2016W monitors

https://www.3dmark.com/3dm/37004594?

Ryzen Rig 1: ASUS B350-PRIME ATX, Ryzen 7 1700, Sapphire R9 Fury Tri-X Nitro 4gb HBM, 16gb (2x8) 3200mhz V-Color Skywalker, ANTEC Earthwatts 750w PSU, MasterLiquid Lite 120 AIO cooler in Push/Pull config as rear exhaust, 250gb Samsung 850 Evo SSD, Patriot Burst 240gb SSD, Cougar MX330-X Case.  Zalman K600S keyboard, Zalman ZM-GM1 mouse, Acer XF270HU 2560x1440 144hz IPS monitor

https://www.3dmark.com/3dm/37628874?

Dwight: The Mixed Metals Loop Media Center.  Ask me about it.  Currently decommissioned to move to an mATX setup on a new MOBO once I pick one out (getting its facelift as of June 2020 have new air cooler, drives etc.  About 60% finished.  Will no longer be a closed loop system.

Schrute: ASUS M5A99FX Pro R2.0, FX 8350, Sapphire R9 Fury Tri-X Nitro 4gb HBM, 16gb (4x4) Corsair Vengeance DDR3 1600mhz, Sparkle/FSP 650w PSU, Corsair H100i GTX 240mm AIO w/ 12mm thick fans to fit in top exhaust, 256gb TIMETEC SSD, 1tb WDBlack HDD, Rosewill Nautilus 1.0 case.  DSI 90-Key Mechanical Keyboard w/ Cherry Red switches, Generic mouse, 37" 1080p TV

Micro Form Factor Dell OptiPlex 3040: Dell 0MGK50 A02, i3-6100T, 2x4gb DDR3 1600, Team Group 120gb SSD, 500gb Seagate 7mm HDD attached storage, Windows 10 Pro, Logitech K400+, USB Wifi adapter all vesa mounted to the back of a 37" 1080p TV for form factor in the kitchen

Linux Box: Toshiba Laptop, i7 620M, NVS graphics, 4gb ram tinker toy at the moment.  Running Manjaro XFCE at the moment.

 

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Posted · Original PosterOP
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

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Posted · Original PosterOP
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

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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


Workstation Laptop: Dell Precision 7540, Xeon E-2276M, 32gb DDR4, Quadro T2000 GPU, 4k display

Ryzen Rig 2: ASrock B450 Pro4 ATX, Ryzen 7 1700 @ 4.2ghz all core 1.4vCore, AMD R9 Fury X w/ Swiftech KOMODO waterblock, Custom Loop 2x240mm + 1x120mm radiators in push/pull 16gb (2x8) 3600mhz V-Color Skywalker (or 4x8gb DDR4 2666mhz for large tasks), Corsair HX850 PSU, 128gb Patriot Scorch NVMe Win 10 boot drive, 500gb Samsung 840 EVO SSD, 512GB TeamGroup MS30 M.2 SATA III, CoolerMaster HAF XM Case.  Zalman K600S keyboard, Zalman ZM-GM1 mouse, Hannspree HF207 and Acer AL2016W monitors

https://www.3dmark.com/3dm/37004594?

Ryzen Rig 1: ASUS B350-PRIME ATX, Ryzen 7 1700, Sapphire R9 Fury Tri-X Nitro 4gb HBM, 16gb (2x8) 3200mhz V-Color Skywalker, ANTEC Earthwatts 750w PSU, MasterLiquid Lite 120 AIO cooler in Push/Pull config as rear exhaust, 250gb Samsung 850 Evo SSD, Patriot Burst 240gb SSD, Cougar MX330-X Case.  Zalman K600S keyboard, Zalman ZM-GM1 mouse, Acer XF270HU 2560x1440 144hz IPS monitor

https://www.3dmark.com/3dm/37628874?

Dwight: The Mixed Metals Loop Media Center.  Ask me about it.  Currently decommissioned to move to an mATX setup on a new MOBO once I pick one out (getting its facelift as of June 2020 have new air cooler, drives etc.  About 60% finished.  Will no longer be a closed loop system.

Schrute: ASUS M5A99FX Pro R2.0, FX 8350, Sapphire R9 Fury Tri-X Nitro 4gb HBM, 16gb (4x4) Corsair Vengeance DDR3 1600mhz, Sparkle/FSP 650w PSU, Corsair H100i GTX 240mm AIO w/ 12mm thick fans to fit in top exhaust, 256gb TIMETEC SSD, 1tb WDBlack HDD, Rosewill Nautilus 1.0 case.  DSI 90-Key Mechanical Keyboard w/ Cherry Red switches, Generic mouse, 37" 1080p TV

Micro Form Factor Dell OptiPlex 3040: Dell 0MGK50 A02, i3-6100T, 2x4gb DDR3 1600, Team Group 120gb SSD, 500gb Seagate 7mm HDD attached storage, Windows 10 Pro, Logitech K400+, USB Wifi adapter all vesa mounted to the back of a 37" 1080p TV for form factor in the kitchen

Linux Box: Toshiba Laptop, i7 620M, NVS graphics, 4gb ram tinker toy at the moment.  Running Manjaro XFCE at the moment.

 

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Posted · Original PosterOP
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 ?

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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. 


Main RIg Corsair Air 540, I7 8700k, ASUS ROG Strix Z370-H, G.Skill TridentZ 16GB, EVGA 1080TI SC Black, EVGA 850 GQ, Acer xG270HU 2560x1440@144hz

 

Spare RIg Corsair Air 540, I7 4770K, Asus Maximus VI Extreme, G.Skill Ares 32Gb, EVGA 1080sc & 1060 SSC, Corsair CX850M, Acer KG251Q 1920x1080@240hz 

 

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