i'd go for Gigabyte Odin Pro 550W...

why? because it has larger current on +5V and +3.3V, even though slightly lower than CM's +12V rail @18A, but still, it has 4 rails unlike CM's; only 3 rails

Gigabyte Odin Pro 550W - http://www.gigabyte.com.tw/Products/PowerS...IN%20Pro%20550W

CoolerMaster Real Power 520W - http://www.coolermaster.com/products/produ...=detail&id=2685

i'm just doing simple web-research, not base on experience with it... , actually my brother using Gigabyte Odin Pro 550W, and it's a good PSU with acceptable noise, wait... noise? yeap... i found that it's louder than my ST56ZF even though my ST56ZF using 80mm fan , about that CoolerMaster... no idea...

Whats the minimum 12V rails need for the HD3870?

told you le... at least 30A on single¹ or total combined²

¹ : applied single rail PSU
² : applied on multi-rail design PSU

Wow.I dont think that the Acbel E2 510W can support HD3870 as the 12V rails only 18A.
Thats the psu i can get ATM.

for ur information, E2 510W are dual rail 18A, which means it can support 3870...

Thanx man for the clarifications.
I am new at this power supply stuffs.

pardon me for mis-understood that...

so, it's 18A + 18A = ±36A , do keep in mind, in multirail configuration PSU, the total combined rail is exactly as after we totaled up... it's less than that..., not much though... 2A ~ 4A only

For multirailed PSU, keep in mind that most of the PSUs below 600W are actually single rail PSUs with 30A+, but the wires are labeled as seperate rail to keep with the stupid ATX 2.xx specification.

Simple reason is this-a true multi rail PSU usually uses seperate transformers for each rail (which are pretty big & expensive). Even if the manufacturer just shares one transformer (still ok, but less EMI protection), it can still really be considered multi rail if there are seperate voltage regulators for each rail. But the sad truth is that is simply a LOT cheaper to use fewer but better components to design a single rail PSU capable of outputing FAT amps, and just relabel wires to say its multi rail.

Generally speaking, its not likely that you'll find a true dual rail PSU for less than RM300, simply because it doesn't make economic sense for the manufacturer (its like selling Core 2 Extremes at less than RM600).

ocz, you might want to address your PSU questions in ocforums, xtremesystems, etc. People there would give you a better idea of what it is about

Hi bro.The place u mentioned is too high for me.
Well some of my question are answered here.Thank you for the help.

My thing is,i don't really intend to get those expensive PSU like zeus,gamextream,pc & c,etc where else an acbel or enermax liberty 500W will do to work my pc runs smoothly.
Thats why i really want to know how far can a mid-range power supply go.

what do you how far can a mid-range power supply go... , if you meant mid-range @RM300~RM400 price range then i might suggest Gigabyte Odin series 550 to name a few, Silverstone ST56F for example...

I think ill go for the Enermax Tomahawk 500W,Enermax Liberty 500W,ST560F,<---- all this range from RM300 Above.
As long as its below Rm350.

@ocz
personal preference, Enermax FMA2 535W. Awesome PSU.

I think you should consider modular PSU's these days.

Nice choice.I used it one.That time the price was RM475.
But i didn't know much about it.I sell it to get the OCZ modstream.Well,after need money.Isold my OCZ and get the Acbel E2 470W.
Now,thinking of to get a long last PSU that will never turn me down.

Thats a good idea.There few cheap modular psu that can be considered.For example the Mushkin 550W series and the I-Cute 600W series.Price ranging from RM330 to RM 370.
Well,thats a really hard choice.

I got a few 2nd hand offer in hand here :

A-Silverstone ST650ZF RM400
B-Enermax Liberty 500W RM300
C-Mushkin 550W RM280

@ocz

A-Silverstone ST650ZF RM400 lol u serious man? thats damn low for second hand.... also the psu is server grade

Yup.I am really2 sure.Even when i said its kind of out of my budget,he said offer him.Well,i think he gave me a cheap price is due to i sold him my Gigabyte GA590SLI S5 only RM180.

But the poor thing about the psu is,used 1yr and non-modular.

You can get a new Gigabyte Odin for less than RM400.

Yup.Stated.Its one of my choice.The price is around RM365.

For sub 400,my pick is Corsair VX450W.Solid and cheap.12v with 33A