Looking for 750W PSU with at least 3 PCIe power

[Chiyawa]

Hi,

 

I'm looking for a 750W PSU that has at least 3 PCIe power port. I recently just upgrade my GPU from Gigabyte RX Vega 64 to AsRock RX 6800 XT Phantom Gaming, and the AsRock GPU has 3 PCIe power port. My current PSU has 2 PCIe cable only with 2 port daisy chain to each wire and I'm daisy chaining one of the cable now. I'm not sure about the budget, but I'm trying to get under USD150 or lower (well, I can spare a little if it's around USD160).

 

What I need:

- at least 3 PCIe cable (I don't wish to daisy chain for fear they may pulled too much current and melt the cable)

- CPU12V cable (at least 1 8-pin, 2 preferable as motherboard uses 1 8-pin + 1 4-pin CPU12V)

- At least 8 SATA power port (3 cables, 3 SATA or more ports each, or 2 cable with 4 SATA port each). Having 7 SATA devices: 1 SSD, 1 2.5 inch HDD, 2 3.5 inch HDD, 1 BD-RE drive, 1 DVD-RW drive, 1 Fan + RGB controller

- Molex cable optional, but bonus to have as sometime I might need them for very old device.

- 750W at least (850W is okay too)

- Tier C or better from PSU Tier List, prefer tier A if possible.

- My local shop carries CoolerMaster, Corsair, ThermalTake (preferred, especially their ToughPower GF) and SilverStone. There are some like Aigo, FSP, Gigabyte as well.

 

My PC specs:

CPU: Ryzen 5 3600

Motherboard: Gigabyte X570 Aorus Pro Xi-Fi

GPU: AsRock RX 6800 XT Phantom Gaming

Storage:

- Kingston KC 3000 1024GB Gen 4 NVMe SSD

- Gigabyte 1TB NVMe SSD

- Kingston A400 960GB 2.5 inch SSD

- Fujitsu 750GB 2.5 inch HDD

- Seagate Barracuda 2TB 3.5 inch HDD (the one with SMR)

- Toshiba X300 4TB 3.5 inch HDD

- LiteOn Blu-ray BD-RE drive

- Generic DVD-RW drive pulled from HP

Fan Controller:

- ThermalTake PurePlus to standard PWM + aRGB controller Controlling 6 PurePlus12 fans

Additional fan

-2x CoolerMaster MF120 aRGB 12cm 2000rpm fan (CPU fans)

 

More info:

I usually maxed out at around ~700W input power when gaming. My GPU draw (at least from AMD metrics overlay) is about 270W stress test. Current PSU is Gigabyte G750H semi-modular PSU.

 

Any suggestion is appreciated.

 

Regards,

Chiyawa

[Chiyawa]

I do believe my PSU have issue. I got blue screen sometime just watching Youtube. My motherboard sometimes reported the 5V rail to be 4.78V (I have a few posts about this situation). Just yesterday, the system couldn't boot and the CPU Debug LED is noticeably flickering until I probe the power pin with multimetre, then it works fine.

[PDifolco]

19 minutes ago, Chiyawa said:

Hi,

 

I'm looking for a 750W PSU that has at least 3 PCIe power port. I recently just upgrade my GPU from Gigabyte RX Vega 64 to AsRock RX 6800 XT Phantom Gaming, and the AsRock GPU has 3 PCIe power port. My current PSU has 2 PCIe cable only with 2 port daisy chain to each wire and I'm daisy chaining one of the cable now. I'm not sure about the budget, but I'm trying to get under USD150 or lower (well, I can spare a little if it's around USD160).

 

What I need:

- at least 3 PCIe cable (I don't wish to daisy chain for fear they may pulled too much current and melt the cable)

- CPU12V cable (at least 1 8-pin, 2 preferable as motherboard uses 1 8-pin + 1 4-pin CPU12V)

- At least 8 SATA power port (3 cables, 3 SATA or more ports each, or 2 cable with 4 SATA port each). Having 7 SATA devices: 1 SSD, 1 2.5 inch HDD, 2 3.5 inch HDD, 1 BD-RE drive, 1 DVD-RW drive, 1 Fan + RGB controller

- Molex cable optional, but bonus to have as sometime I might need them for very old device.

- 750W at least (850W is okay too)

- Tier C or better from PSU Tier List, prefer tier A if possible.

- My local shop carries CoolerMaster, Corsair, ThermalTake (preferred, especially their ToughPower GF) and SilverStone. There are some like Aigo, FSP, Gigabyte as well.

 

My PC specs:

CPU: Ryzen 5 3600

Motherboard: Gigabyte X570 Aorus Pro Xi-Fi

GPU: AsRock RX 6800 XT Phantom Gaming

Storage:

- Kingston KC 3000 1024GB Gen 4 NVMe SSD

- Gigabyte 1TB NVMe SSD

- Kingston A400 960GB 2.5 inch SSD

- Fujitsu 750GB 2.5 inch HDD

- Seagate Barracuda 2TB 3.5 inch HDD (the one with SMR)

- Toshiba X300 4TB 3.5 inch HDD

- LiteOn Blu-ray BD-RE drive

- Generic DVD-RW drive pulled from HP

Fan Controller:

- ThermalTake PurePlus to standard PWM + aRGB controller Controlling 6 PurePlus12 fans

Additional fan

-2x CoolerMaster MF120 aRGB 12cm 2000rpm fan (CPU fans)

 

More info:

I usually maxed out at around ~700W input power when gaming. My GPU draw (at least from AMD metrics overlay) is about 270W stress test. Current PSU is Gigabyte G750H semi-modular PSU.

 

Any suggestion is appreciated.

 

Regards,

Chiyawa

Get a Corsair RM750 or 850 (they are nearly same price), this is a very good and trustable PSU

[Chiyawa]

On 1/16/2023 at 6:51 PM, PDifolco said:

Get a Corsair RM750 or 850 (they are nearly same price), this is a very good and trustable PSU

Appreciate your input. Thanks. Unfortunately, though, RM series only have 2 PCIe cables. I'm looking for at least 3 PCIe cables to reduce the chances of overloading the cable. I wonder if I can just buy additional PCIe power cable, though...

 

I wonder why they give 3 ATX12V cable, though. I don't see many motherboard uses 3 12V ATX power ports.

[--SID--]

4 hours ago, Chiyawa said:

I'm looking for at least 3 PCIe cables to reduce the chances of overloading the cable

It's hard to overload a Corsair PCI-e cable. The cable is rated for 360w and the connector is rated for 468w. Using 1 single cable and 1 daisy chained cable is totally fine.

 

4 hours ago, Chiyawa said:

I wonder why they give 3 ATX12V cable, though

Because Corsair was misinformed by nVidia about which cables to use on next gen GPUs. 

[PDifolco]

46 minutes ago, --SID-- said:

It's hard to overload a Corsair PCI-e cable. The cable is rated for 360w and the connector is rated for 468w. Using 1 single cable and 1 daisy chained cable is totally fine.

 

Because Corsair was misinformed by nVidia about which cables to use on next gen GPUs. 

Agreed, at worst you can get a third cable...

 

[Chiyawa]

18 hours ago, --SID-- said:

It's hard to overload a Corsair PCI-e cable. The cable is rated for 360w and the connector is rated for 468w. Using 1 single cable and 1 daisy chained cable is totally fine.

Okay, but it's still make me a little uncomfortable, with modern high-end GPU can pulled 500W in burst mode (remembering back the Amazon game that burn lots of RTX 3090 card)...

[Chiyawa]

18 hours ago, PDifolco said:

Agreed, at worst you can get a third cable...

 

Yeah, that's what I'm looking for, a 750W PSU that has 3 PCIe cable.

[NobleGamer]

8 minutes ago, Chiyawa said:

Yeah, that's what I'm looking for, a 750W PSU that has 3 PCIe cable.

Well there's probably reasons that this isn't more of a thing at 750W, but is at 850W or higher - Especially when it comes to Corsair, who only made a 750W PSU with 3 pcie cables in 2018. So let me speculate, and someone can correct me if I'm wrong:

 

* If a GPU taps 3 pce plugs, that's 450W, and doesn't include power from the pcie slot - Maybe another ~50W for a total of 500W+. That only leaves 250W, so...

 

* If someone gets a XX80 or higher GPU that taps 3 pcie connectors (or equivalent), then that gamer is not as likely to have power efficient parts for the rest of their rig. Your rig proves that, though not with a power hungry CPU but rather a butt ton of storage & other stuff.

 

* Including a third pcie port & cable costs $. Maybe it doesn't justify the $40 jump with some brands, but it's not insignificant either.

 

In any case, here's a list of PSUs that may be what you are looking for - Definitely seems on the high end of cost for 750W: https://pcpartpicker.com/products/power-supply/#th=1&A=700000000000,750000000000&G=6,18&sort=-price&page=1

[Chiyawa]

@NobleGamerI see. Thanks for your list, I'll look into it.

 

11 minutes ago, NobleGamer said:

If a GPU taps 3 pce plugs, that's 450W, and doesn't include power from the pcie slot

I'm not sure about this. AMD Adrenaline reported my GPU only use up to 270W (as far as I can tell), but I'm not sure if that's only the die or the whole board. I have no way to know how much the total draw of my graphic card, but I think it should be a little over 300W. Yeah, I guess nVidia cards can really hog a lot of power, so manufacturer assumes this to be the case.

 

16 minutes ago, NobleGamer said:

Including a third pcie port & cable costs $. Maybe it doesn't justify the $40 jump with some brands, but it's not insignificant either.

Huh, never thought the PCIe cable would cost so much.

[--SID--]

3 hours ago, Chiyawa said:

Yeah, that's what I'm looking for, a 750W PSU that has 3 PCIe cable.

Corsair sells seperate PCI-e cables for their current PSUs https://www.corsair.com/eu/en/Categories/Products/Accessories-|-Parts/PC-Components/Power-Supplies/Type-3-Flat-Black-Ribbon-Cable-PCIe-6%2B2-pin%2C-single-connector%2C-Compatible-with-all-type-3-pin-out-PSU/p/CP-8920130

[PDifolco]

4 hours ago, Chiyawa said:

@NobleGamerI see. Thanks for your list, I'll look into it.

 

I'm not sure about this. AMD Adrenaline reported my GPU only use up to 270W (as far as I can tell), but I'm not sure if that's only the die or the whole board. I have no way to know how much the total draw of my graphic card, but I think it should be a little over 300W. Yeah, I guess nVidia cards can really hog a lot of power, so manufacturer assumes this to be the case.

 

Huh, never thought the PCIe cable would cost so much.

Afaik the system reports the full power draw of the GPU

At less than 300W you don't need more than 2 cables (one with 2 plugs) for your GPU