New PSU for Vega 56

[Mike_651]

Community,

I need to replace my old PSU with a new one due to not having any 8 pins. I was wondering if a EVGA B3 850W would work? I would prefer to stay at or below $100. Please help.

M

 

[okcnaline]

Full spec?

 

[turkey3_scratch]

You won't need an 850W power supply for a Vega56 system. As said, full specs are needed, but you'll be able to go lower than that.

 

[Mike_651]

Here is my basic spec from pc part picker. Looking to get it. https://pcpartpicker.com/list/DqBRd6

 

[okcnaline]

You only need like 550W.

https://www.newegg.com/Product/Product.aspx?Item=N82E16817139144

 

[4745454b]

While the full Vega is a 300W+ GPU, the Vega 56 is only ~225W or so. Usually less. Even with a 100W CPU and everything else you'd need less than 400W or so for the entire system. A 550W should handle that just fine. 850W is just a dumb idea. A 550W B3 would work great.

 

[madmatt30]

I'd go with a cx650m (the 550 would do but you look a little drive happy so why not)

Cheap, good quality , will do the job fine.
A more proven unit than the b3's aswell IMO.
https://www.newegg.com/Product/Product.aspx?Item=N82E16817139148

 

[Kasper Jorgensen]

The RM550x is a very good PSU, also way better than the cx650m.

 

[MrN1ce9uy]

[strike]The EVGA 550W B3 is a better unit than the CX650M and is currently at a great price on Amazon. PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA - B3 550W 80+ Bronze Certified Fully-Modular ATX Power Supply ($59.89 @ OutletPC)
Total: $59.89
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-09-01 14:32 EDT-0400[/strike]

*Edit: It's not that much better, but it is fully modular scores the same in performance and scores higher in build quality than the CXM.

 

[madmatt30]

^ yeah , the rmx costs twice as much.
The b3 ? Still reserving judgement , jonnyguru rated it great , yet toms managed to physically blow up more than one 450w unit in testing.

When I see more tests I may recommend it , till then though it's not on my radar personally.
I'd recommend the b2 over the b3 100%.

 

[InvalidError]

You only need like 550W.

Unless you unlock the full power range and attempt to overclock accordingly, in which case the Vega 56 alone can draw close to 400W.

 

[MrN1ce9uy]

^ yeah , the rmx costs twice as much.
The b3 ? Still reserving judgement , jonnyguru rated it great , yet toms managed to physically blow up more than one 450w unit in testing.

When I see more tests I may recommend it , till then though it's not on my radar personally.
I'd recommend the b2 over the b3 100%.

Fair enough. Agreed that B2 was better than B3 in at least 2 respects; dual-ball bearing fan and higher rated operating temp.

 

[okcnaline]

You only need like 550W.

Unless you unlock the full power range and attempt to overclock accordingly, in which case the Vega 56 alone can draw close to 400W.

True but I just assume that OP doesn't plan on overclocking the GPU. ( ͡° ͜ʖ ͡°)

 

[MrN1ce9uy]

You only need like 550W.

Unless you unlock the full power range and attempt to overclock accordingly, in which case the Vega 56 alone can draw close to 400W.

This is a good point, I read the Vega 56 can be flashed with Vega 64 BIOS and draw much more power while outperforming stock Vega 64 when overclocked. Maybe a bigger PSU would be desired. In which case I'd recommend a better unit than the CX650M.

 

[madmatt30]

Why ?? The cx650m is a GOOD quality 650w psu at the end of the day.

Realistically if you push the Vega to its limits overclocking traditionally then it may just touch 300w.

Loads of headroom their IMO ,

 

[Kasper Jorgensen]

^ yeah , the rmx costs twice as much.
The b3 ? Still reserving judgement , jonnyguru rated it great , yet toms managed to physically blow up more than one 450w unit in testing.

When I see more tests I may recommend it , till then though it's not on my radar personally.
I'd recommend the b2 over the b3 100%.

Yes the RMx cost twice but it is also a tier 1 psu, the CXM is only a tier 3, that alone is worth the premium price.

 

[Mike_651]

I would like to overclock it some time in the future if it means I can keep the gpu longer. I may also change to a 4k display when 4k monitor prices go down too.

M

 

[okcnaline]

Yes the RMx cost twice but it is also a tier 1 psu, the CXM is only a tier 3, that alone is worth the premium price.

Tier what. The only reason I recommended the RMx is because it was $20 cheaper and better than a 850W B3. The new CXM is quite stable despite a lower voltage 3.3V rail, making it a good unit.

 

[turkey3_scratch]

I would not purchases an EVGA 550 B3, it does not have working protections and the 450W and 550W ones blow up in the Tomshardware reviews. They are also worse than the higher wattage B3s with a sleeve fan and worse caps.

 

[okcnaline]

I would like to overclock it some time in the future if it means I can keep the gpu longer. I may also change to a 4k display when 4k monitor prices go down too.

M

It's been a while since 650W was recommended, and 550W was necessary.
https://www.newegg.com/Product/Product.aspx?Item=N82E16817139207

 

[MrN1ce9uy]

Why ?? The cx650m is a GOOD quality 650w psu at the end of the day.

Realistically if you push the Vega to its limits overclocking traditionally then it may just touch 300w.

Loads of headroom their IMO ,

I was saying if overclocking with Vega 64 BIOS drawing close to 400W I'd recommend a better, or at least bigger, unit than the CX650M. I'm sure it would do fine, I would just prefer more headroom in load capacity or higher max operating temp.

 

[MrN1ce9uy]

I would like to overclock it some time in the future if it means I can keep the gpu longer. I may also change to a 4k display when 4k monitor prices go down too.

M

It's been a while since 650W was recommended, and 550W was necessary.
https://www.newegg.com/Product/Product.aspx?Item=N82E16817139207

Yes, the TXM has the higher 50C *max operating temp. +1

 

[Kasper Jorgensen]

PSU tier list

https://linustechtips.com/main/topic/631048-psu-tier-list-updated/

or an older less updated

http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html

 

[Mike_651]

Thank you all for the input. I will most likely go with a G2 or a Corsair. Would like but not need gold quality. Still deciding on 650 or 750. For the future.

 

[madmatt30]

If it's in budget just buy a g2 650w & be done.