Will a 450w PS (Antec) be sufficient for;

CPU - Intel E8400 wolfdale
GPU - GeForce 8800GTS (OC)
MOBO - GIGABYTE GA-EP35-DS3L LGA 775 Intel P35 ATX
RAM - OCZ Reaper 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
SOUND - Sound Blaster Audigy 4

go corsair 550 watt. 450 watt is so like, 1998.

I already have a 450w (I'm upgrading my system). I don't want to upgrade the ps unless I have to.

well, i think you have to. you're upgrading your system, but not your power supply? as you know, everything you have is being supported by your power supply. you also failed to mention your hard drive, cd/dvd/floppy drives, usb ports, firewire, network controller, mouse, keyboard. you need more power, so why not give it some good energy?

You gonna OC at all? If so deffinitely upgrade the PSU. I think it's a good idea anyway. How long have you had your current PSU? I know you may not want to, but it could save you some trouble when you're back here saying.....

I've built my new rig and it boots up and runs fine, but when I play a game it locks up, shuts down, or BSOD

I'm not saying for certain it won't work....there's a good chance you'll be fine, but if you're wanting an honest answer or honest advice....I'd say upgrade....always easier to start with a new one than replace it later.

What are the 12v rail(s) ampage? If it's high enough, it could work, if only barely.

If you already have it, no reason to not try it first. Low power can't damage your hardware. The most that can happen is it crash on high load and restart. You can always buy a new psu if it doesn't work.

If you're putting together a new machine, get a bigger psu, at least 550w.

I have been in the electronics industry for 17 years. I have seen equipment damaged from undercurrent. It's not impossible. A crash or restart are not the worst things that can happen. You could fry a power supply that you already know works for an older machine. So it might still have a life somewhere.

I don't think it's a good idea to just try it and see if it dies. Your current PSU is going to be running closer to maximum capacity than a newer one that rated at a higher wattage......that means it's gonna be putting out a lot more heat.

Of course you may be fine! I just wouldn't think it would be something you'd want to gamble all of your new parts on.

The reason I didn't upgrade the psu is because I had asked about it when I was selecting the parts and was told it should be sufficient.
http://www.tomshardware.com/forum/ [...] ing-system

I recently ordered the parts, and had second thoughts about not getting a psu. So I thought I'd ask again to make sure in this forum. I will not be overclocking at all. If 450 is not going to work, I'll upgrade. I just don't want to pay an additonal $50+ if the part I had already would work.

im gonna say for now, just try out your current psu. take note of any strange things that happen and if they keep occurring, then consider a new psu. but preferably dont wait too long to go out and buy a new one

yes i would agree, i have a corsair 550, amazing

well there are alot of situations in which something 'could' work, but other things are better. like driving a suv in a recession with $4.00 gas prices. sure, it gets you to point a-b, but its probably not a good idea. doing 55 in a 35, sure you might not get caught, but its not a good idea. so on and so forth. do yourself a favor and get a 550 watt.

you might even want a 750+ watt. with crossfire and sli, along with video cards eating up more energy, its only getting worse. invest in the present to prepare for the future.

I'd stick with your PSU for now, but be prepared for a new one if it doesn't work. I'm running an XFX 780i, E8400@3.6 GHz, 1 160GB sata, 40GB IDE, one DVD combo drive, and an 8800 GT at 650,1625,950. I don't have any problewms running this on an Ultra 400W X-connect. Just be ready to buy a new one, because I don't know the power reqs for an 8800 GTS.

I'm running the following

Gigabyte GA-P31-DS3L
Intel e2160 @3Ghz
2GB Geil DDR2 800
Galaxy 8800GT 512mb
+ 320gb HD, DVD, mouse, keyboard..

These are running 100% stable with a Enermax 430watt supply.

If your 450watt supply is as efficient as mine than you shouldn't have any problems.

no try 550

I am currently running:

Antec 900 case
Evga 750i SLI FTW
e8400 @ 3.0
evga 8800gts 320mb Superclocked
1 sata drive
3x120mm fans with LED
2x120mm fans without LED
1x200mm fan with LED
2x1gig ddr2 ram 1066mhrz
2xdvd burners
and about 5 usb devices (G15 keyboard, G5 gaming mouse, webcam, printer, ipod)

all powered by a corsair 450w power supply. Have never had a problem. I have been using this setup for about 3-4 months now.

If your current powersupply is as good or better than a corsair 450w then i would not worry about it. Save your money. If you plan on doing SLI in the future then you should consider upgrading AT THAT TIME. Right now, your fine.

Edit: Here is a link for a decent power supply calculator, but only use it as a guide. The quality of the PSU makes all the difference.

http://extreme.outervision.com/psucalculatorlite.jsp

I will got for a 550 or more