I am in the process of buying a 460 Watt PSU (Cooler Master eXtreme Power Plus RS-460-PCAR) to upgrade my computer and be able to run a stronger graphics card. The specs of the PSU is somewhat different from my current PSU and I am scared that it might damage some of the components.
I am running a Dell Optiplex GX270 Pentium 4, 2400 Mhz, 3072 MB (DDR SDRAM) with a standard dell factory PSU.
Please see the difference and tell me whether or not this will be suitable. I have taken this down from my current PSU and as stated by the following website link
Specs:
AC Input:
Current/Old:
100 ~ 127V~/ 6A
200 ~ 240V~/ 3A
50~60Hz
New:
115V/230V; 10A/6A; 60/50Hz
DC Output:
Current/ Old:
- +3.3V : 18A (Max Output: 150W)
- +5V : 22A (Max Output: 150W)
- +12V : 14A
- -12V : 1A
- +5Vfp : 2A
- MAX OUTPUT POWER 250W
New:
- +3.3V : 22A (Max Output: 165W)
- +5V : 25A (Max Output: 165W)
- +12V1 : 18A (Max Output: 312W)
- +12V2 : 18A (Max Output: 312W)
- -12V : 0.5A (Max Output: 6W)
- +5Vsb : 2.5A (Max Output: 12.5W)
Please assist me in buying the correct PSU. Will this new one damage my current components?
Answer
All these power/amperage ratings are maximums, your system will only draw the current it needs.
Think about the normal mains electricity from a wall plug. Here in the UK it is normally 230V / 13A (effectively). A 13A kettle will draw 13A, while a 50mA phone charger will just draw 50mA - no risk on damage. The principle is the same here.
So no, higher maximum amperage output will not cause damage.
If you are going to also upgrade your machine make sure the new PSU has a maximum output above that of your new set of components, because too little power will cause you problems (crashing / restarts / PSU blow-out ).
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