would this be a good upgrade

[leochief998]

i have amd a4-3400 APU with radeon(tm) HD graphics (2 CPUs),2.7 GHz
4 gb ram
500 gb HDD
psu 400w

i would buy "AMD Athlon II X4 651K" best possible cpu for FM1 socket
Corsair Builder Series CX 500 Watt
Sapphire Radeon R7 260X 2GB GDDR5

would everything work ?

 

[Xproyect]

If you can afford it, sure go for it!