GPU and Psu

[Klohejn]

Hello community, i was just wondering what psu i would need to get for the msi geforce rtx 5070 12gb ventus 2x oc i have no idea how to find one that suits my system. If Someone have answers Pls help me.

My desktop is the hp omen 25 l gt 14 2802no.

[NonSequitur777]

@Klohejn,

Your OMEN by HP 25L Gaming Desktop PC GT14-2802no (A2UK2EA) is fitted with the ArcticL motherboard (SSID: 8B1D), which is an ATX power enabled motherboard.

An RTX 5070 has a 250-watt TDP and is powered by a 16-pin PCIe power cable. The RTX 5070 I purchased recently came with a dual 8-pin PCIe to 16-pin PCIe power adapter cable. Each 8-pin PCIe power cable must be connected to a separate 8-pin PCIe power rail, meaning, a so-called ATX splitted 8-pin PCIe power cables (originating from the same trunk PCIe power cable) will not do.

I would choose a fully modular 750-watt power supply (for ease of power cable management), such as this Amazon-DE purchase example: https://www.amazon.de/-/en/Fractal-Design-Ion-Gold-750W/dp/B08X1V6G2M/ref=sr_1_15?crid=2Q4D0059M2T70....

Kind Regards,

NonSequitur777

[Klohejn]

Hi, thanks for the reply, i was just wondering if my current psu 600 watts 80+ gold would be enough for the 5070 because i dont know how hard it would be to replace the psu,only ever upgraded ram on my prebuildt pc 

[NonSequitur777]

@Klohejn,

Like I said, it depends. If your 600-watt power supply is equipped with two separate PCIe power cables, a 600-watt power supply is sufficient to power your RTX 5070.

Why don't you provide the exact specs/model number of your 600-watt PSU, and I'll take a look at it.

Kind Regards,

NonSequitur777

[Klohejn]

Hi sorry i didnt see that i am relatively new to pc building so can you tell me where to find out the information i would be very happy

[NonSequitur777]

@Klohejn,

Just look at your power supply's product label, and tell me what it says: part number and model number.

For example, consider this power supply label: 17-153-042-04.jpg (640×412), where the part number is: W0129RU and the model (number) is: Thermaltake Purepower 600 AP.

Kind Regards,

NonSequitur777

[Klohejn]

Hp part nr m19769-011

Manufacturer is light on technology corp

Coolermaster 

[NonSequitur777 · Accepted solution]

@Klohejn,

Thank you, that was very helpful!

• The HP/ Cooler Master 600-watt (PS-4601-1, HP p/n: M19769-011) is a single-rail unit (label shows +12 V = 45 A, not split rails).

• It provides two 6+2-pin PCIe connectors on a single daisy-chained (pigtail) cable, not two separate PCIe looms/rails. Vendors list “(2) 6+2 Pin Connector” with no second PCIe cable, and photos of this family show a single PCIe trunk.

What that means for you:

• It will power GPUs that only need one 8-pin (or modest dual-8-pin cards), but for higher-draw GPUs such as an RTX 5070 best practice is one PSU cable per GPU socket -which this PSU can’t do because it has just the single pigtail. (Industry guidance generally advises avoiding pigtail-to-two on >~225–300-watt GPUs.)

You will need to replace this power supply with an ATX unit that has two discrete PCIe cables.

Hope this was helpful.

Kind Regards,

NonSequitur777