help in choosing PSU

I don't know anything about HEC PSUs. The CoolerMaster one is probably not a bad unit, but it is probably a little over-rated. I had one and would not buy another.
Are Antec PSUs available there? Antec, Seasonic, PC Power & Cooling, Corsair, OCZ, Enermax would all be good. Are any of those available?

Just to help you get on the right track, here is a site to help.

One of the TOP PSU review sites.
http://www.jonnyguru.com/

Also, have you tried using google for terms like "PSU review" or "PSU calculator"?

Google is a dream to find info. Spend some time and become informed.

And just remembered, saw a link to a Phil place on OC forums.

http://www.tipidpc.com/

Maybe ya know it already, hope it helps.

Corsair 550vx for $77 on newegg after rebate - simply the best quality you can get

yeah, youre right. 650TX isn't available here but the 620HX costs $125. i'd rather buy this http://www.newegg.com/Product/Prod [...] 6811119142 (PSU included) which only costs $115 here.

extremeoverclocking.com's review on the coolermaster is quite good
http://www.extremeoverclocking.com [...] 50W_1.html (550W Continuous / 650W Peak) though a few more suggestions will be appreciated.

something like this is enough. (400-500w.)
http://www.newegg.com/Product/Prod [...] 6817153023
the psu u have should handle the 4850 fine.

My recommendation is the ToughPower 600W PSU. This PSU is Crossfire certified, and is also covered by a 5 year warranty, and is also built with industrial grade compactors, which makes this a very appealing option. I found that this can be purchased from a reputable company called ewiz, which I have had no problems with on ordering from for $99 with additional cost for shipping and handling.

http://www.ewiz.com/detail.php?p=P [...] 2834934346



Specification
o Mfr Part Number: W0103RU
o Features:
+ Complies with ATX 12V 2.2 & EPS 12V version
+ SLI, Cross-Fire, and Dual Core CPU ready
+ Next generation four +12V rails(12V1, 12V2, 12V3, 12V4) supports high-end graphic card and PC system (combined loading of 48A)
+ Independent Voltage Circuit: offers unflappable current delivery under heavy load and makes voltage output more stable
+ Active Power Factor Correction (PF>0.99) and high efficiency (up to 85%)
+ Extremely good voltage regulation (±3%): provides steady voltage for system
+ Industrial grade components (capacitor, transformer, etc)
+ High reliability: MTBF>120,000 hours
+ Mirror effect housing and reliable 14cm ball-bearing fan
+ Protections: Over Current, Over Voltage, and Short-Circuit protection
+ Safety / EMI Approvals: CE, CB, TUV, FCC, UL, CUL, and BSMI certified
o Maximum Power: 600 Watts
o Color: Black
o Switches: ATX Logic on-off additional power rocker switch
o PFC (Power Factor Correction): Active PFC
o Cooling System:
+ 14 cm Fan
+ Speed: 1900 RPM (±10%)
+ Dimension: 140 x 140 x 25 mm
+ Air Flow: 82 CFM
+ Temp. Auto Control
o Noise: 16dB at 1300RPM
o P. G. Signal: 100 ~ 500 ms
o Over Voltage Protection Recycle AC to Reset: +5V 7.0 Vmax, +3.3V 4.5 Vmax, +12V 15.6 Vmax
o Input Voltage: 100 VAC ~ 240 VAC
o Input Frequency Range: 47 ~ 63 Hz
o Input Current: 115VAC / 8A max, 230VAC / 4A max.
o Hold-up Time: 16 ms
o Efficiency: Upto 85%
o Connector:
+ 1x 24-pin Main Connector
+ 1x 4-pin +12V Power Connector
+ 2x 4-pin Floppy Drive Connector
+ 2x 6-pin PCI Express Connector
+ 1x 8-pin +12V Power Connector
+ 7x 4-pin Peripheral Power Connector
+ 6x 5-pin S-ATA Connector
o Dimension (WxLxH): 15 x 16 x 8.5 cm
o Weight: 2.34 kg

read some reviews on the CM Real Power 550, most of the reviews gave it a pass but all of them are quite
outdated (4Q 2005 - 2Q 2006).

also found out that it has 30A continous 48A peak on it's 12V rail. will i have a problem with the 4850
which i think requires 31A?

VX550 is not available here. guess i'll go with the HX520 then. anyway thanks for the suggestions