It will depend on the make/model of the 250W PSU. With gfx cards, it's all about the +12V rail specs, not the total wattage. However, a 380W PSU is the normal minimum for a R7-250.
i have changed to a Asus Radeon R7 250 1gb GDDR5 would a 350w Corsair VS series psu be alright please get back to me as soon as possible as i am hoping to order all of this soon.
i have changed to a Asus Radeon R7 250 1gb GDDR5 would a 350w Corsair VS series psu be alright please get back to me as soon as possible as i am hoping to order all of this soon.