Sign in with
Sign up | Sign in
Your question
Solved

psu confusion about thunder 600watt

Last response: in Components
Share
March 28, 2014 12:55:09 PM

guys i didn't find a category like power supply unit, so just posted my question (psu orriented) here.. wish i will get enough response from u guys.
mine's psu is cm thunder 600 watt/...... and i recently installed a radeon 7950(sapphire vapor-x edition) which needs a 6 pin and a 8 pin power connector.. though my psu has two 8 pin power connectors but they are interconnected(they are not two different cables sneaked out from the psu but a single cable holds two 8 pin connector and they are interconnected by some wires).
so i"m thinking if that doesn't mean anything at all and works good or they cant really provide 150 watt power at that 8 pin connector.. may this questions makes no sense but i'm not interested in psus' and don't know a lot about them.. so i would like a preferable answer from u expert guys

Best solution

March 28, 2014 1:16:58 PM

Your power supply uses a single rail design, meaning all 12V power comes from the same components. That is neither good nor bad, it is simply how it is designed. Provided there is enough power, it doesn't matter that it comes from a single rail. Because of this, there is no point in using different cables for your PCI-E connectors, and that is why they are nested together.

Your PSU can provide 47A at the 12V rail, which is way more than enough.
Share
Related resources
March 28, 2014 1:59:17 PM

thanks.... to both of u guys... i certainly noticed that one of the two fans of my 7950 card isn't rotating... so thre's most likely nothing wrong with the psu right? its must be a shitty fan i have got.. i should through the vapor x 7950 at sapphire service centre to replace it.... as its still under 1.7 years warrenty....
and trying some idiot jobs like oiling could void the warrenty..
it feels so good to hear that i'm good to go with my psu.. lol
m
0
l
March 28, 2014 2:02:31 PM

hey hold on a sec?
can u please tell from which perspective the same wire connecting two pcie connectors are not even actually very good..
u just said that its neither good nor bad..
if u clarify me here, that would help me a lot..
thanks for the quick response

m
0
l
March 29, 2014 3:48:54 AM

What the other post is saying is you get different types of power supply.
With a single 12v power rail. The maximum 47A is provided along any of the 12v connectors that use 12v.

The examples are the graphics card, And hard drive power connectors, or 12v ones to a CD, DvD rom drive.

The Amps on the single 12v rail are devided for what each device requires from the 12v rail connected.

So Total 12v amp output single rail. 47 amps.
Hard drive takes 2 amps at 12v.
Cd drive takes 2 amps at 12v
graphics card takes 28 amps at 12v.
The draw from a 6+8 config.

32 amps used in total of the single rail.
leaving 15 amps left for other devices that may be added to the system.


With a dual rail Psu the 12v can be split, where each fixed rail provides a set amount of amps.
Based on the total amp rating of the psu.
But some incorporate rail switching where the amount of amps from one rail to another can be increased or decreased depending on the amount of amps required on each power rail.
or the amount of devices connected to the 12v rail.
of each.

The advantage, more power connectors.





m
0
l
March 29, 2014 8:23:37 PM

thanks man... i just saw at the back of my psu its written that the power efficiency is 85%.... i don't really know if its a bronze certified , coz if it was then the comp. must have written it with a big symbol like "kill ur machine bronze certified, u have got a bronze medel.. blah blah.. or something like that" .....
but there is just the back side which says its a 85%.. so it should be a bronze one.....
though if the efficiency is 75 % (i would be good to go) cause the total power still 450 watt... so it should be more than enough.
thanks all the way and as a return gift u've got the bs frm me. have a nice day
m
0
l
April 1, 2014 10:35:26 AM

dipanjan biswas said:
thanks man... i just saw at the back of my psu its written that the power efficiency is 85%.... i don't really know if its a bronze certified , coz if it was then the comp. must have written it with a big symbol like "kill ur machine bronze certified, u have got a bronze medel.. blah blah.. or something like that" .....
but there is just the back side which says its a 85%.. so it should be a bronze one.....
though if the efficiency is 75 % (i would be good to go) cause the total power still 450 watt... so it should be more than enough.
thanks all the way and as a return gift u've got the bs frm me. have a nice day


Just for clarification, efficiency calculation works the other way around. A PSU rated for 500 Watts must be able to output 500 Watts no matter what. Efficiency affects only how much extra power will be drawn from the outlet. So, working at the maximum rated power, a 500 Watt 85% efficiency PSU will draw 588 Watts from the outlet, whereas a 500 Watt 75% efficiency PSU would draw 666 Watts.
m
0
l
!