QUOTE(max_cjs0101 @ Jul 3 2006, 02:12 PM)
i don't think so leh...maybe can get low pure power lo..
Haha , come back after 1 hour of PSU test ... not actually test , just observations ...
RM 78.00 can get pure power PSU ????
No you can only get Real Power ... Not Pure Power .... Actually all the Cap cap capalang Brand PSU is not so "simply" put a Wattage on the casinng and that's it ... It normally said 400W MAX @ 25celcius or so .... That means under controled condition , the maximum possible Wattage output may be true .... ( unless they want to get Sue by someone .... business strategy
) The thing may be true only under certain condition .. You know la ... How to keep PSU at 25Celcius at all times in Malaysia .... Unless Face to air cond la ... PSU very Temperature Peaky one ... Too high or too low , the wattage produce is diffrent ... Silicon Mosfet Performance may Vary ... I had notice those Ciplak PSU had very narrow ... 0 celcius to 40 celcius ... This is just to prevent people from said the PSU not UP to Standard .... But Good brand Like Acbel had working temp from -20 to 70 celcius (Silicon only in danger after 80Celcius ...) They dare to said that because they can go future ...
One more thing as long as their Multimeter Reads 400W at all possible perfect condition ... They can proudly Promote that their PSU is 400W .. aha Business strategy ... But for Good brand , their 400w may mean always above the minimum par of 400W regardless of temp .. unless extreme temp ...
Ah ... Mosfet Mosfet Mosfet ... crucial component in PSU ... anyway this dont cost much .... You can get 12V@50A if you want for only RM20 per mosfet ... But one thing that is important is the Voltage controller ... It control the switching of the Mosfet (hence called Switching PSU ) and it is very expensive if you get a Good PSU .. This High speed Switch controller determine your stability ... The faster the responds over the negative feedback , the more stable the current ... Acbel had a good Controller ... expecially the LCD version ... which vertually connected to the computer USB for better control of voltage flatuation .
Flatuation of ATRIX is terrible on the long term when sudden load is induced not when the load is already induced .....
I observe this when i open the voltage Sensor for one hour and see what it flatuate .... Yes in short time you see nothing flatuate much ... But you put it as sensing once per second for 1 hour .. you will notice someting .... Dangerous indeed ... ATRIX can actually go as low as 1.26V and as High as 3.39V while the nominal is 3.33V ... this account to more than 5% of flatuation of the VCore ....
this goes to the 12V rail as well .... (thats while it had unstable Voltage regulation ... a power Mosfet but poor poor regulation ) No wonder it connot boot at the begining ... The voltage cannot be stablise in a sudden rise in demand ... anyway , if you say it can't run at REAL POWER 500W as stated .. you may be wrong ... If you give it enough time , It will Burst to the full power .... Thats why , after suceessful boot at first boot , you can actually stress the CPU without risking underpower ... (PRIME , SANDRA ... all the stress test can't trip this baby )
So , Not "the weight" that resemble the Power of PSU ... "ATRIX is very heavy la , heavy than those Ciplak one " but it is true for certain extent as the Powerful the Mosfet , the bigger the Heatsink ... but if you had high performance heatsink , then it will be smaller .... ( and those High performance 3 rail PSU have very smaller heat sink as inside is too crowed )
More research going on tonite until i had get my Acbel 550W...
Jul 3 2006, 10:56 AM
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Just bought them for 5weeks .... Ah spent allot last few month ...
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