psu PSU underpowered for rx 6600?

[sam_hamwich]

Hi,

 

I'm looking for opinion even though I've already ordered a new PSU.

 

Running games under load is causing my PC to power off and reboot.

I installed an ASROCK RX 6600 8GB on a PC with a Corsair VS450 (450W Bronze). I would have expected this to work, as the GPU is only pulling 100W with an i5-4590 pulling ~50W. I have two SSDs running, and not much else to pull power.

I'm replacing a Sapphire R9 270X OC. This should be pulling more power than an RX 6600 but the R9 never caused a shutdown in 7+ years.

I was playing Prodeus with the same settings enabled on the R9 270X and RX 6600 and only the RX 6600 caused a shutdown.

I had the same shutdown issue after trying an Nvidia GTX 980 but that was pulling much more power (180W+).

Is this related to PCI-E connectors?

R9 270X OC = 2 x 6pin

RX 6600 = 1 x 8pin

[podkall]

48 minutes ago, sam_hamwich said:

Corsair VS450 (450W Bronze)

what color of does the PSU's label have?

 

 

[Alireza]

51 minutes ago, sam_hamwich said:

Hi,

 

I'm looking for opinion even though I've already ordered a new PSU.

 

Running games under load is causing my PC to power off and reboot.

I installed an ASROCK RX 6600 8GB on a PC with a Corsair VS450 (450W Bronze). I would have expected this to work, as the GPU is only pulling 100W with an i5-4590 pulling ~50W. I have two SSDs running, and not much else to pull power.

I'm replacing a Sapphire R9 270X OC. This should be pulling more power than an RX 6600 but the R9 never caused a shutdown in 7+ years.

I was playing Prodeus with the same settings enabled on the R9 270X and RX 6600 and only the RX 6600 caused a shutdown.

I had the same shutdown issue after trying an Nvidia GTX 980 but that was pulling much more power (180W+).

Is this related to PCI-E connectors?

R9 270X OC = 2 x 6pin

RX 6600 = 1 x 8pin

RX 6000 and 7000 series and Nvidia 3000 and 4000 series have a problem

they would spike in power which can trigger old PSUs over current protection mechanism and cause them to shut down

a good power supply from 1 to 2 years ago should solve this issue

[podkall]

19 minutes ago, Alireza said:

RX 6000 and 7000 series and Nvidia 3000 and 4000 series have a problem

they would spike in power which can trigger old PSUs over current protection mechanism and cause them to shut down

a good power supply from 1 to 2 years ago should solve this issue

their problem isn't spikes, it's the PSU, because it's 99% possible that it's the orange label:

[sam_hamwich]

1 hour ago, podkall said:

what color of does the PSU's label have?

 

 

 

Orange

 

https://www.corsair.com/uk/en/p/psu/cp-9020096-uk/vs-series-vs450-450-watt-power-supply-uk-cp-9020096-uk

[sam_hamwich]

1 hour ago, Alireza said:

RX 6000 and 7000 series and Nvidia 3000 and 4000 series have a problem

they would spike in power which can trigger old PSUs over current protection mechanism and cause them to shut down

a good power supply from 1 to 2 years ago should solve this issue

I've ordered a be quiet! Pure Power 12M 80+ Gold - 750 Watt.

This is overkill for a RX 6600 but at least it gives me an option to get a more powerful GPU in a few years.

[sam_hamwich]

1 hour ago, podkall said:

their problem isn't spikes, it's the PSU, because it's 99% possible that it's the orange label:

Yes, Orange Label VS450.

What is causing the PSU to fail, if not spikes?

[podkall]

17 minutes ago, sam_hamwich said:

Yes, Orange Label VS450.

What is causing the PSU to fail, if not spikes?

it is spikes, but it's also PSU's build quality,

 

to explain why it's not just spikes causing the failure:

 

remember these keypoints:

• the PSU is 450W
• it is F tier, so very low quality

 

Now let's look how much power does RX 6600 need:

 

RX 6600 is fine running on 450W PSU, the problem is if the PSU is very low quality, it has a higher chance to fail,

 

during a transient spike, when the effective Wattage of PSU is exceeded, and the PSU is low quality, there's a chance it's safety protection will trigger, causing the PC to shutdown

 

some very low quality PSUs also lack certain protections, or have very bad protections, which can be a explosion/fire hazard

 

or a low quality PSU is more likely to fry another component when it fails..

 

 

• It sounds scary, but you should be fine
• The reason the 450W PSU worked with your older GPU is because despite having same required PSU, is because the R9 270X's transients are probably more mild and less present
• it could also be because R9 270X uses 2 6pin connectors and the PSU can drive that, but struggles to drive single 8pin connector due to whatever design "flaw" it has
• The orange VS450 Corsair is a 2012 PSU, the RX 6600 is a 2020-2021 GPU, 10 years ago hardware had different power properties and requirements