Acbel is a strong 12V PSU, your 450W should enough to run 8800GTS under minimal setup but not GTX. For safety, you can use a program to check the 12V rail, if it is running lower than 11.60, consider your PSU is overwork. Normally a strong PSU should maintain around 11.90

In term of modern usage, A 26A on 12V rail consider healthy. However depends on your usage, such as using 8800, 26A may not enough.

Why not use a 20->24pin convertor socket to plug in your mobo?

kevyeoh:
Quad core indeed used a lot of power, based on standard rig config(not enough info provided), I expect you are using Q6600, it required 750W, so, a 700W may be even not enough.

tps18489:
Again based on standard rig config (more device stated can be more accurate), your system only required 260W, so a coolermaster 380W is enough for your system, especially you are only using FX5200. For me, I suggest Acbel

Search for 500W, your system required 460W

The problem is your rig require 460W, and 450W PSU is not enough, unless you downgrade the X1950 to X1600 or 7600

7300GT is ok-lah for 350W, 7600GS will also acceptable if don't put too many gadget inside with single core, duo-core needs 450W onwards and anything above 7600GT will need serious power. 8800GTX require at least 550W to startup your pc.

Just add up the total amp on 12V, there is rules on supplying high amp(if I am not mistaken, it is 20A) on a single rail which is hazard to PSU but rules meant to be bent The manufacturer split the label to V1 and V2 such as 34A split into 16+18 which is safe for approval, but the all those 34A are supply from single source.

There are articles on these at http://extreme.outervision.com

Recently, higher gadget require higher amp as dual rail no longer enough which appears as V3,V4. I haven't check on these as single source still or already split to two, been busy on new system

the rating shouldn't be off +-5 of that rail, which means 12V is around 11.4V, but normally I take 11.6 within the safe zone. This means your PSU is running at it's limit

note : before rushing out to buy a new PSU, you should try another program to check the voltage, no single program gives a accurate reading, the most accurate is using a multitester to check which should be handle by expert only.

This post has been edited by mashimarow: Apr 1 2007, 07:45 PM

Don't trust totally on PSU voltage reading from utility, try a few utility to get the average, not all will give the same reading. Check this out:

http://web.aanet.com.au/SnooP/psucalc.php

This one gives you the amp required.

What I heard is Acbel giving lifetime warranty and CM giving 3 years.

what I don't get is, why giving lifetime as PSU is excepted to die off around 4-5 years?

I just ordered Acbel I-power 450W for my second rig, very satisfy with the first one, stick to it still even it is a bit expensive

For true power, your dream machine needs 350W with 24.1A estimate.

the 22A is continuoues power, the max is around 38A if I am not wrong, did compared with Acbel I-power 450W before.

The Acbel stated 300W for 12V which is 25A, running max with 41A.

I do suggest for 8800 series, you better off getting a more powerful PSU, 500W above, it is a nice card, don't risk it.

Note : check around the forum, you will see some people did make 8800GTS run smooth with CM-450W

more than enough

It's the total amp on 12V rail count, not just the single rail. Even they split the rail, it is actually from single source. They split it to below 20A each rail is due to regulation.

Acbel I-power 450W is very quiet

400W with 12V rail 30A and above

This post has been edited by mashimarow: May 15 2007, 12:16 PM

More info, what mobo, what g/c, how many HD, how many CD/DVD, how many PCI card, how many fans, how many USB device, how many RAM stick.

Quite a high power pc, it needs at least 360W with 26A on 12V rail. Any branded real power 450W have over 26A on 12V.

For 8800 I recommand 450W real power but all 450W is RM200 and above. You can try Coolermaster Real Power 450W which is just a bit over RM200, around RM220 I believe.

Your system estimate needs real power 350W with 25A on 12V rail. You might ask just 350W why needs 450W? It is just an estimate of power usage, you should get higher than usage.

Can't give you the comparison but I use Acbel Ipower 450W and very satisfy with it, low noise (actually I didn't hear any noise at all, my CPU fan even louder that it), stable power and beautiful changing LED color to light up the system inside