AsRock H81 PRO BTC Mining Rig help

[byt411]

Hi guys, I'd like to build a rig with an Asrock H81 PRO BTC motherboard with a Gigabyte R9 270, and an Intel Celeron processor.
I have some questions, since I have never built a rig before:

1. Will a 500W PSU be enough?
2. Will I need risers yet?

Thanks in advance!

[ssateneth]

With a single R270 and celeron? A 300 watt power supply should be sufficient.

For every R270 you add, it's probably safe to add an extra 200 watts to the power supply, though that's likely overkill.

[byt411]

With a single R270 and celeron? A 300 watt power supply should be sufficient.

For every R270 you add, it's probably safe to add an extra 200 watts to the power supply, though that's likely overkill.

I'm not sure about that, since according to Gigabyte the card needs at least 500W...
How about the risers?

[ssateneth]

A cheap system doesn't need much more than 50 watts baseline (an MSI Z77A-G45 motherboard, 4GB ram, hard drive, and celeron G530 only used 27 watts for me at the wall), and the R7 270 likely won't use much more than 175 watts under load. I have kill-a-watts and I've measured power output of comparable cards. Gigabyte is wrong.

[byt411]

A cheap system doesn't need much more than 50 watts baseline (an MSI Z77A-G45 motherboard, 4GB ram, hard drive, and celeron G530 only used 27 watts for me at the wall), and the R7 270 likely won't use much more than 175 watts under load. I have kill-a-watts and I've measured power output of comparable cards. Gigabyte is wrong.

OK Thanks. If I add more cards, I should use risers, correct?

[byt411]

bump

[Equate]

Hi guys, I'd like to build a rig with an Asrock H81 PRO BTC motherboard with a Gigabyte R9 270, and an Intel Celeron processor.
I have some questions, since I have never built a rig before:

1. Will a 500W PSU be enough?
2. Will I need risers yet?

Thanks in advance!

you dont need a riser but 700 watt PSU will do the good rather than 500 watt