My computer shots dowm on games

[cesar_76_99]

i have a 5830 whit 630 watt power suplli and whe i play cryisis 2 it shots down the computer so i whe back to 4870 and crossfire and it shotsdown in an instint can some one please tell me how much power do i need for crossfire or for my 5830 how much do i need

 

[yummerzzz]

How much amps are on the +12v Rail (s) of that power supply, computers shutting down is a common symptom of the power supply failing to enough power.

 

[Twoboxer]

A 965 OC'd and a 5830 won't trequire more than 400W, so your system should be fine with a 630W psu that (a) isn't broken, or (b) really is a 630W psu.

Have you eliminated heat as a source of your problem? If so, try a new psu.

 

[cesar_76_99]

well i just tried many times and its just keep turning off my supervisor saids its the power supli because i tried whit the 4870 crossfire and it turns off and then whit single and its ok for like 30 minutes the it shots off and i dint check how many amps it has but yea i tink its the power suply or what you guys tink sud i upgrade power suply

 

[Twoboxer]

As I said, try a new, quality power supply.

 

[ko888]

Does your 630 Watt power supply have a minimum +12 Volt continuous current rating of 37 Amps or greater and with at least four PCI-E Supplementary Power Connectors as recommended for a system with two Radeon HD 4870 graphics cards in CrossFireX mode?