PSU for RTX 3070?

[Shroobs]

So i just got my hands on an MSI RTX 3070 Ventus 2x OC and a Ryzen 5 4600. I have a 400w platinum rated PSU with only one 8-pin PCI-E cable. Will the PSU be enough for the CPU and GPU, and all i have to do is buy a splitter, or must i sell my PSU and get a new one? I have Micro ATX case so i need a small PSU.

[Tegneren]

You should theoretically be fine, depending on what else your system have. But you are very close to the limit at stock speeds. Any OC or power spikes and you will go over.

I would recommend to go up to about 650W, giving you a little headroom.

 

Its also always recommended to run separate power cables to each plug on the GPU

[Guest]

6 minutes ago, Tegneren said:

You should theoretically be fine, depending on what else your system have. But you are very close to the limit at stock speeds. Any OC or power spikes and you will go over.

I would recommend to go up to about 650W, giving you a little headroom.

 

Its also always recommended to run separate power cables to each plug on the GPU

Running a 650 or 750W is mores probably the sweet spot

 

Go higher if you want, but I wouldn't recommend it really unless your cpu or anything need it

 

Maybe running 2 gpus or if you just wanna overspend like hell on a psu (a higher wattage is better)

 

[Guest]

19 minutes ago, Shroobs said:

So i just got my hands on an MSI RTX 3070 Ventus 2x OC and a Ryzen 5 4600. I have a 400w platinum rated PSU with only one 8-pin PCI-E cable. Will the PSU be enough for the CPU and GPU, and all i have to do is buy a splitter, or must i sell my PSU and get a new one? I have Micro ATX case so i need a small PSU.

A 3070 easily pulls 260W

 

And depends on if your cpu is overclocked, I think 400W is maybe a bit too little

 

[monkiflip]

22 minutes ago, Shroobs said:

So i just got my hands on an MSI RTX 3070 Ventus 2x OC and a Ryzen 5 4600. I have a 400w platinum rated PSU with only one 8-pin PCI-E cable. Will the PSU be enough for the CPU and GPU, and all i have to do is buy a splitter, or must i sell my PSU and get a new one? I have Micro ATX case so i need a small PSU.

A 550w is probably ok, but I would go with a 650/700w for future upgrades

[--SID--]

37 minutes ago, Shroobs said:

So i just got my hands on an MSI RTX 3070 Ventus 2x OC and a Ryzen 5 4600. I have a 400w platinum rated PSU with only one 8-pin PCI-E cable. Will the PSU be enough for the CPU and GPU, and all i have to do is buy a splitter, or must i sell my PSU and get a new one? I have Micro ATX case so i need a small PSU.

You mean a Ryzen 5 4600G? Bad cpu for a PCI-e4.0 x16 GPU because it only has 8 PCI-e3.0 lanes available for the PCI-e x16 slot.

 

What make and model motherboard is it?

 

I only found 400w platinum PSUs in prebuild systems. Do you have a prebuild like HP, Acer, Lenovo or something like that?

[Shroobs]

On 9/10/2021 at 10:38 AM, --SID-- said:

You mean a Ryzen 5 4600G? Bad cpu for a PCI-e4.0 x16 GPU because it only has 8 PCI-e3.0 lanes available for the PCI-e x16 slot.

 

What make and model motherboard is it?

 

I only found 400w platinum PSUs in prebuild systems. Do you have a prebuild like HP, Acer, Lenovo or something like that?

I do have an HP Pavilion TG01-2827no. Its a mATX case. Its a Erica3 motherboard which only supports Ryzen 4000 series Renoir CPUs. Just realized that buying a new PSU won’t work because the motherboard doesn’t have the standard 24-pin power connector. It uses 2 weird 4-pin connectors (one of them is for the CPU). No PSU i know of has one of these. Any tips on what to do?

[--SID--]

16 minutes ago, Shroobs said:

Its a mATX case.

It's not mATX. It's proprietary with 12VO PSU and front I/O fixed at the motherboard. New PSU also means a new motherboard and new case. My advise: sell it and build something new with Ryzen 5600X/5800X or Intel i5-11600/i7-11700.

[Shroobs]

7 minutes ago, --SID-- said:

It's not mATX. It's proprietary with 12VO PSU and front I/O fixed at the motherboard. New PSU also means a new motherboard and new case. My advise: sell it and build something new with Ryzen 5600X/5800X or Intel i5-11600/i7-11700.

Ok. Will do that then. Thanks!

[Shroobs]

1 hour ago, --SID-- said:

It's not mATX. It's proprietary with 12VO PSU and front I/O fixed at the motherboard. New PSU also means a new motherboard and new case. My advise: sell it and build something new with Ryzen 5600X/5800X or Intel i5-11600/i7-11700.

But what if i were to get my hands on the same PSU, but with 500W? (I have a  friend who could swap with me)

[--SID--]

8 hours ago, Shroobs said:

But what if i were to get my hands on the same PSU, but with 500W?

Then you still have a crappy cpu with only 8 PCI-e3.0 lanes and a case with very bad airflow.

 

Does the 500w have two 6+2 pin PCI-e connectors that's required for the MSI RTX 3070 Ventus 2x OC and does the GPU fit in the case?

[Shroobs]

On 9/13/2021 at 8:24 AM, --SID-- said:

Then you still have a crappy cpu with only 8 PCI-e3.0 lanes and a case with very bad airflow.

 

Does the 500w have two 6+2 pin PCI-e connectors that's required for the MSI RTX 3070 Ventus 2x OC and does the GPU fit in the case?

Sorry for taking so long to answer, i actually answered a while ago and closed chrome and it got deleted…

 

 Is the cpu THAT bad? Idk what the 8pci-e 3.0 lanes means, will it tank my performance a lot? What does it mean?

The PSU does not have two 8-pin connectors, instead it has one 6-pin and  one 8-pin. I can get myself an adapter. The GPU does fit in the case and the airflow actually alright, or it was at least fine with a 2060s

[--SID--]

6 minutes ago, Shroobs said:

Is the cpu THAT bad? Idk what the 8pci-e 3.0 lanes means, will it tank my performance a lot? What does it mean?

The GPU is wired with 16 PCI-e4.0 lanes. PCI-e 3.0 is half the bandwith of PCI-e4.0. With 8 PCI-e3.0 lanes you give the GPU a quarter of the bandwith it's made for.

9 minutes ago, Shroobs said:

I can get myself an adapter.

Using an adapter is not recommanded. Mosly they're of bad quality and loose voltage.

[Freakwise]

2 hours ago, Shroobs said:

Is the cpu THAT bad? Idk what the 8pci-e 3.0 lanes means, will it tank my performance a lot? What does it mean?

Well in terms of its raw performance, not really, it was close to a ryzen 5 3600 in some scenario

[Freakwise]

9 hours ago, --SID-- said:

With 8 PCI-e3.0 lanes you give the GPU a quarter of the bandwith it's made for.

4600g does have x16 lanes for gpu, and yes i know it's still 3.0

 

https://www.anandtech.com/show/15921/amd-launches-12-desktop-renoir-ryzen-4000g-series-apus-but-you-cant-buy-them

 

 

https://en.wikichip.org/wiki/amd/ryzen_5/4600g

 

https://en.m.wikipedia.org/wiki/Ryzen

 

Spoiler

 

 

Edited September 15, 2021 by Freakwise

[--SID--]

2 hours ago, Freakwise said:

4600g does have x16 lanes for gpu, and yes i know it's still 3.0

  Reveal hidden contents

https://www.anandtech.com/show/15921/amd-launches-12-desktop-renoir-ryzen-4000g-series-apus-but-you-cant-buy-them

 

https://en.wikichip.org/wiki/amd/ryzen_5/4600g

 

https://en.m.wikipedia.org/wiki/Ryzen

 

Nope, 12 lanes. 4 for storage and 8 for pci-e slot.

[Shroobs]

6 hours ago, Freakwise said:

Well in terms of its raw performance, not really, it was close to a ryzen 5 3600 in some scenario

Im not going with a “balls-to-the wall” epic gaming rig(as you can probably tell), as long as it runs better than a 2060s im happy. I found a good quality adapter, 200 NOK (about 20USD) . Will this work out? Having less bandwidth means what for my performance? My budget is only about 100bucks rn, which is why i would REALY like to not have to buy all new parts and just get a new PSU.

[Freakwise]

13 minutes ago, Shroobs said:

Will this work out?

I'm not that familiar with some sort of adapter like that, so yeah, I can't really say anything about it

15 minutes ago, Shroobs said:

Having less bandwidth means what for my performance?

Little to no fps drop