Is my PSU enough?

[brooklynoob]

When I turn on my compter I get the GIGABYTE splash screen and it freezes, the fans keep spinning but the screen freezes.

I am building a computer with the following parts;

1 x GIGABYTE GA-B75M-D3P LGA 1155 Intel B75 HDMI SATA 6Gb/s USB 3.0 Micro ATX Intel Motherboard
1 x Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics
1 x G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-
1 x COOLER MASTER HAF 912 RC-912-KKN1 Black SECC/ ABS Plastic ATX Mid Tower Computer Case
1 x EVGA 02G-P4-2645-KR GeForce GT 640 2GB 128-bit DDR3 PCI Express 3.0 x16 HDCP Ready Video Card
1 x CORSAIR Builder Series CX430 430W ATX12V v2.3 80 PLUS BRONZE Certified Active PFC Power Supply
1 x Crucial M4 CT128M4SSD2 2.5" 128GB SATA III MLC Internal Solid State Drive (SSD)
1 x Seagate Barracuda ST31000524AS 1TB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive
1 x TP-LINK TL-WDN4800 Wireless N900 Dual Band PCI Express Adapter, 2.4GHz 450Mbps/5Ghz 450Mbps, IEEE 802.11a/b/g/n,WEP,
1 x SYBA SY-HUB20076 USB 3.0 Internal Hub 4-port, Ffits Both 3.5" & 5.25" Bay

[Irukandji]

I'm no expert, but I doubt you can keep a 3570k + GT640 stable on a 430W PSU, even if it's a Corsair one. Try a 600+W one.

[sauris]

My brother gave me advice that when building a computer, never get a power supply that just about is enough. Always get a bit more powerful one, so you are sure that it is enough and also when you get additional parts for your computer, they will need some power too.

[ghostintheshell]

3570k - system with that CPU eats near 120W -/10-20W under load.
gf640 it's something like radeon 6670, so, near 60-65W
HDD~ 10-15W/mb~20W...
Corsair making good PSUs, some of it even on seasonic base, it's enough for this system
And want to say, modern hardware does not consume huge wattage, and modern PSUs have good quality, nothing to fear here
sorry for my english

[absic]

Page 16 of the User's Manual for this motherboard states:

1/2) ATX_12V/ATX (2x2 12V Power Connector and 2x12 Main Power Connector)
With the use of the power connector, the power supply can supply enough stable power to all the components
on the motherboard. Before connecting the power connector, first make sure the power supply is turned
off and all devices are properly installed. The power connector possesses a foolproof design. Connect the
power supply cable to the power connector in the correct orientation.
The 12V power connector mainly supplies power to the CPU. If the 12V power connector is not connected,
the computer will not start.
To meet expansion requirements, it is recommended that a power supply that can withstand high
power consumption be used (500W or greater). If a power supply is used that does not provide the
required power, the result can lead to an unstable or unbootable system.

Whilst it is true that modern system do not need as much power as previous systems they still need an adequate supply, especially during the POST/BOOT phase of operation where, quite often, more power is drawn than expected.

If you are having trouble getting a system to POST/BOOT then check that all power connectors are mounted correctly and pushed firmly home in the sockets.

Remove all but the basic components from the build. By basic components I mean, CPU, 1 stick of RAM, GPU and keyboard. If you still can't get the system to start then try removing the motherboard from the PC Case and testing it on a cardboard box to eliminate the possibility of a short. If you are not sure how to do this then check here: http://forum.giga-byte.co.uk/index.php/topic,5704.msg45814.html#msg45814 where I go through the process of doing this.

[Ben]

I would still go for a higher wattage, I run a Corsair TX650 on my system, & as absic says, post/boot does use a lot of power, I have even noticed my temperatures to go very high at this stage.

To be on the safe side it is better to err on the upper than lower wattage, plus later on you may plan to update your equipment, or add more hardware.

I also agree to recheck all connections, have you tried to run in safe mode or can't you get that far, if you can it could be a simple driver problem or conflicts, just a thought.

Ben.

Happy 2013 to all.