Jump to content

So I know it's not recommended to do this, but my PSU is rated at 500W and I am putting in a GTX 1060 which recommends a 400W for the whole system, and I don't have any more money right now otherwise I would buy a new PSU. However, it only has 2 molex and two satas on the PSU, all of which are being used up by fans, SSDs and HDDs. So my question is, what is the best way for me to split it out from one of those then adapt to an 8 pin for my GPU?

 

Currently I have both satas being used up by a SSD and a HDD, then one molex is being used up by a HDD and the other by a fan, however, the fan does passthrough so I have a spare molex, but it is a little far away and I'm not sure that those molex to 8 pins would reach, and they all use two molex. So the plan currently is to get a molex to sata, then a sata splitter, then a dual sata to 8 pin. I am thinking this to balance out the load so its not all on the satas or all on the molex.

 

Thanks

Dark_Llama

 

PS, sorry if wrong topic.

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/
Share on other sites

Link to post
Share on other sites

It could be dangerous to do that.

8-pin PCI-E a rated for up to 150W.

Either a SATA or two molex cable(s) are not ELECTRICALLY rated for 150W.

You have a high chance of overloading the cables, that section or the peripheral rail on the PSU.

AMD Ryzen 9000 Rig

  • AMD R7 9800X3D + Alphacool CORE 1 w/ Performance Mount Kit + Thermal Grizzly AM5 Contact Frame
  • Gigabyte X870E Aorus Pro Ice
  • 32GB (16GB X2) G.Skill Trident Z5 Neo RGB DDR5-6400
  • Sapphire NITRO+ 6800 XT Special Edition + EKwb Full Cover Block
  • Custom Loop w/ 2x 360mm Radiators
  • WD SN850X + WD SN750 + Samsung 980
  • EVGA P2 850W + Red/White CableMod Cables
  • Lian-Li O11 Dynamic EVO XL

AMD Ryzen 5000 Rig

  • AMD R7-5800X
  • Gigabyte B550 Aorus Pro AC
  • 32GB (16GB X 2) Crucial Ballistix RGB DDR4-3600
  • Gigabyte Vision RTX 3060 Ti OC
  • EKwb D-RGB 360mm AIO
  • Intel 660p NVMe 1TB + Crucial MX500 1TB + WD Black 1TB HDD
  • EVGA P2 850W + White CableMod cables
  • Lian-Li LanCool II Mesh - White

Intel i7-8086K / Z390 Rig (Decommissioned Q2' 2025)

Intel i7-6800K / X99 Rig (Officially Decommissioned, Dead CPU returned to Intel)
Intel i5-4690K / Z97 Rig (Decommissioned)

AMD FX-8350 / 990FX Rig (Decommissioned)

AMD Phenom II X6 1090T / 890FX Rig (Decommissioned)

 

<> Electrical Engineer , B.Eng <>

<> Electronics & Computer Engineering Technologist (Diploma + Advanced Diploma) <>

<> Electronics Engineering Technician for the Canadian Department of National Defence <>

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11927168
Share on other sites

Link to post
Share on other sites

4 hours ago, Dark_Llama said:

So I know it's not recommended to do this, but my PSU is rated at 500W and I am putting in a GTX 1060 which recommends a 400W for the whole system, and I don't have any more money right now otherwise I would buy a new PSU. However, it only has 2 molex and two satas on the PSU, all of which are being used up by fans, SSDs and HDDs. So my question is, what is the best way for me to split it out from one of those then adapt to an 8 pin for my GPU?

 

Currently I have both satas being used up by a SSD and a HDD, then one molex is being used up by a HDD and the other by a fan, however, the fan does passthrough so I have a spare molex, but it is a little far away and I'm not sure that those molex to 8 pins would reach, and they all use two molex. So the plan currently is to get a molex to sata, then a sata splitter, then a dual sata to 8 pin. I am thinking this to balance out the load so its not all on the satas or all on the molex.

 

Thanks

Dark_Llama

 

PS, sorry if wrong topic.

What PSU doesn't have PCIe connectors?

 

What model is it?

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11927322
Share on other sites

Link to post
Share on other sites

4 hours ago, Dark_Llama said:

So I know it's not recommended to do this, but my PSU is rated at 500W a

However, it only has 2 molex and two satas on the PSU,

That means that its horseshit and in the region of this beauty:

 

 

So to be blunt:

If you want to keep your PC you throw away the PSU and NOT USE IT EVER AGAIN!

If you don't, use it but it _WILL_ kill your system!

"Hell is full of good meanings, but Heaven is full of good works"

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11927332
Share on other sites

Link to post
Share on other sites

4 hours ago, Comic_Sans_MS said:

I know, I probably should have said, "Just don't", but yeah.

Yeah, would still be interesting to know what junk only comes with two S-ATA and two PCIe connectors...

 

A picture of the label of the PSU would be nice...

"Hell is full of good meanings, but Heaven is full of good works"

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11928145
Share on other sites

Link to post
Share on other sites

On 11/4/2018 at 12:48 AM, -rascal- said:

It could be dangerous to do that.

8-pin PCI-E a rated for up to 150W.

Either a SATA or two molex cable(s) are not ELECTRICALLY rated for 150W.

You have a high chance of overloading the cables, that section or the peripheral rail on the PSU.

lowest rating I have seen for molex is 6A.

Double them up and you're within spitting distance of 150W on the 12V rail.

PCIe 8 pin over two SATA power is however, indeed, asking for trouble.

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11931781
Share on other sites

Link to post
Share on other sites

Run the system without the 1060 until you can buy a proper PSU. Don't put that JSU (Junk Supply Unit) near your new graphics card. A fried card isn't eligible for RMA/warranty.

PC Specs - AMD Ryzen 7 5800X3D MSI B550M Mortar - 32GB Corsair Vengeance RGB DDR4-3600 @ CL16 - ASRock RX7800XT 660p 1TBGB & Crucial P5 1TB Fractal Define Mini C CM V750v2 - Windows 11 Pro

 

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11931992
Share on other sites

Link to post
Share on other sites

On 11/6/2018 at 3:01 AM, NelizMastr said:

Run the system without the 1060 until you can buy a proper PSU. Don't put that JSU (Junk Supply Unit) near your new graphics card. A fried card isn't eligible for RMA/warranty.

Yea thought better of it now, gonna either buy this 
Cooler Master MWE BRONZE 650W
or this

CORSAIR RM750x White

 

Want the white one, but the extra cost is hard to justify.

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11937702
Share on other sites

Link to post
Share on other sites

8 hours ago, Dark_Llama said:

Yea thought better of it now, gonna either buy this 
Cooler Master MWE BRONZE 650W
or this

CORSAIR RM750x White

 

Want the white one, but the extra cost is hard to justify.

It's really not. The MWE is a low end PSU (not explosive, just low end) and the RMx is a high end unit. You pay for better efficiency, reliability and components.

PC Specs - AMD Ryzen 7 5800X3D MSI B550M Mortar - 32GB Corsair Vengeance RGB DDR4-3600 @ CL16 - ASRock RX7800XT 660p 1TBGB & Crucial P5 1TB Fractal Define Mini C CM V750v2 - Windows 11 Pro

 

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11938839
Share on other sites

Link to post
Share on other sites

On 11/7/2018 at 8:28 PM, NelizMastr said:

It's really not. The MWE is a low end PSU (not explosive, just low end) and the RMx is a high end unit. You pay for better efficiency, reliability and components.

Yea but on a budget, and it's either have the 650W not or have the 750W later. Plus I don't need the extra wattage. I know about all that good stuff but am leaning towards the MWE.

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11952669
Share on other sites

Link to post
Share on other sites

38 minutes ago, Dark_Llama said:

Yea but on a budget, and it's either have the 650W not or have the 750W later. Plus I don't need the extra wattage. I know about all that good stuff but am leaning towards the MWE.

You should never get a 650W PSU (most stupid sized wattage, too little for dual good GPUs, and far too much for a single GPU system), and you probably will never need a 750W PSU (SLI/X-Fire sucks).

 

Just get a good PSU. Link a store.

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11952747
Share on other sites

Link to post
Share on other sites

On 11/3/2018 at 5:48 PM, -rascal- said:

It could be dangerous to do that.

8-pin PCI-E a rated for up to 150W.

Either a SATA or two molex cable(s) are not ELECTRICALLY rated for 150W.

You have a high chance of overloading the cables, that section or the peripheral rail on the PSU.

Oh stop. 2x molex will be fine. 4 pin molex connectors are rated for 11 amps at 12V. They're typically used with 18 AWG wire, which, by conservative estimates, can carry 6-7 A of current. (More often rated higher) That's, at minimum, 6.5*12 * 2 = 156 W. And the 1060 is NOT a high power card.

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11952755
Share on other sites

Link to post
Share on other sites

On 11/11/2018 at 5:14 PM, Comic_Sans_MS said:

You should never get a 650W PSU (most stupid sized wattage, too little for dual good GPUs, and far too much for a single GPU system), and you probably will never need a 750W PSU (SLI/X-Fire sucks).

 

Just get a good PSU. Link a store.

Local store - https://www.pbtech.co.nz/

 

Having a sale soon, so gonna get one then, any recommendations?

 

EDIT - Looking at this one, https://www.pbtech.co.nz/product/PSUCLM3450/Cooler-Master-MWE-BRONZE-450W-80Plus-Bronze-PSU-ME

I know it's their low-end line, but don't have the budget for a nice one.

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11955687
Share on other sites

Link to post
Share on other sites

2 hours ago, Dark_Llama said:

Local store - https://www.pbtech.co.nz/

 

Having a sale soon, so gonna get one then, any recommendations?

 

EDIT - Looking at this one, https://www.pbtech.co.nz/product/PSUCLM3450/Cooler-Master-MWE-BRONZE-450W-80Plus-Bronze-PSU-ME

I know it's their low-end line, but don't have the budget for a nice one.

https://www.pbtech.co.nz/product/PSUCOR73800/Corsair-CX-Series-CX450-Power-Supply-450W-80-Plus

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11956011
Share on other sites

Link to post
Share on other sites

2 hours ago, Dark_Llama said:

Local store - https://www.pbtech.co.nz/

Having a sale soon, so gonna get one then, any recommendations?

the Segotep Gold seem cheap and decent.


After that the usual higher end Gold units.

 

2 hours ago, Dark_Llama said:

EDIT - Looking at this one, https://www.pbtech.co.nz/product/PSUCLM3450/Cooler-Master-MWE-BRONZE-450W-80Plus-Bronze-PSU-ME

I know it's their low-end line, but don't have the budget for a nice one.

http://www.jonnyguru.com/modules.php?name=NDReviews&amp;op=Story3&amp;reid=568

 

Look at the CL1 and CL2 values.

The MWE Bronze should be quite similar in 550W and below, 600W and up are the ones one could think about...

"Hell is full of good meanings, but Heaven is full of good works"

Link to comment
https://linustechtips.com/topic/990613-adapt-psu-to-gpu/#findComment-11956019
Share on other sites

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×