Is this VGA compatible with the my entire PC system?

[Digao]

Hello my friends, thanks for open this question

This is my pc, it have more than 3 years old, so is not so fast
Power Supply: Atx 850w cmpsu-850txv2 http://www.corsair.com/enthusiast-s...tified-850-watt-high-performance-power-supply
RAW: 8 GB
Motherboard: AM3 Asus M4A88T-V EVO/USB3
Processor: Phenom II X6 AM3 1075T 3.0 Ghz (Thermal Design Power = 125w)

I will change my vga to a PCI-E NVIDIA GTX 770 2GB/256bits EVGA - 02G-P4-2770-KR
Requirements of the vga:
Minimum of a 600 Watt power supply.
Minimum recommended power supply with +12 Volt current rating of 42 Amps.
Maximum Power Draw 250

I don't understand very well about somethings:
1 - Did my power supply supports this vga? Is 850w okay with this new config? Did my power supply supports the rating of 42 Amps, and the +12 Volt?
2 - Will my pc work perfectly with this vga? Is there compatibility with the entire system? Can my processor and motherboard handle the new vga?
3 - My pc is a little slow, if the video card is very strong, and the rest of the computer weak, can cause problem on the graphics card?


I know that my motherboard is PCI-e 2.0, but i don't care, and i know my power supply support the number of pins to put in the vga

Thanks
Peace

 

[bignastyid]

The PSu is more than enough. It could power 2 770's. The gpu will probably get bottlenecked(not perform to its full potential) in some games till you get a faster cpu(will require a motherboard upgrade aswell).