That's a solid, "MAYBE".
Personally, I'd replace the power supply with a quality unit of at least 450 watts (your current is only 280 watts) before trying a new graphics card.
Data Sheet
-Wolf sends
Good thing you found that out. YOU can try to power that card with your current, but personally, I wouldn't even bother. If you cannot replace the power supply (without rewiring), it's time to start looking at a new system.
-Wolf sends