im still around...
Moderator: ForumModerators
- Dr.Feelgood
- Posts: 331
- Joined: Fri Nov 26, 2004 11:05 pm
- Location: Hellpit USA (Kentucky)
Here's why you need a good psu:
"A high quality power supply with sufficient capacity to meet the demands of your computer will provide years of stable power for your PC. A poor quality or overloaded power supply will cause all sorts of glitches that are particularly insidious, because the problems occur in other, seemingly unrelated, parts of the system. For example, power supplies can cause system crashes, can make hard disks develop bad sectors, or cause software bugs to appear, problems which can be very difficult to trace back to the power supply."
From: http://www.pcguide.com/ref/power/sup/index-c.html
Not all supplies are created equal. And Antec has produced some lemons.
A lot of power supplies cheat on their ratings. Besides not being able to steadily supply the amperage they list, they round up. Look at this power supply's report:
This is actually a 262 power supply but it reports that it is 300w.
Voltage Amp Total Watts
+12 V 8 12 * 8 = 96
+5 V 30 5 * 30 = 150
+3.3 V 14 3.3 * 14 = 46.2
+3.3 V / +5 V
Limit 150
-5 V 0.5 5 * 0.5 = 2.5
-12 V 0.5 12 * 0.5 = 6
+5 V Standby 1.5 5 * 1.5 = 7.5
Total
96 + 150 + 2.5 + 6 + 7.5 = 262
It can be confusing because many power supplies combine the +12v and the +3.3v rating so notice at the bottom the combined total was only used.
So if the rated power per each voltage can be exagerated your actual PSU wattage can be greatly exagerated. This is unfortunately very common with PSU's.
"A high quality power supply with sufficient capacity to meet the demands of your computer will provide years of stable power for your PC. A poor quality or overloaded power supply will cause all sorts of glitches that are particularly insidious, because the problems occur in other, seemingly unrelated, parts of the system. For example, power supplies can cause system crashes, can make hard disks develop bad sectors, or cause software bugs to appear, problems which can be very difficult to trace back to the power supply."
From: http://www.pcguide.com/ref/power/sup/index-c.html
Not all supplies are created equal. And Antec has produced some lemons.
A lot of power supplies cheat on their ratings. Besides not being able to steadily supply the amperage they list, they round up. Look at this power supply's report:
This is actually a 262 power supply but it reports that it is 300w.
Voltage Amp Total Watts
+12 V 8 12 * 8 = 96
+5 V 30 5 * 30 = 150
+3.3 V 14 3.3 * 14 = 46.2
+3.3 V / +5 V
Limit 150
-5 V 0.5 5 * 0.5 = 2.5
-12 V 0.5 12 * 0.5 = 6
+5 V Standby 1.5 5 * 1.5 = 7.5
Total
96 + 150 + 2.5 + 6 + 7.5 = 262
It can be confusing because many power supplies combine the +12v and the +3.3v rating so notice at the bottom the combined total was only used.
So if the rated power per each voltage can be exagerated your actual PSU wattage can be greatly exagerated. This is unfortunately very common with PSU's.
- law.of.averages
- Posts: 1755
- Joined: Sun May 15, 2005 7:24 pm
- Location: Beautiful, Sunny Florida
Return to “ut: open unreal forums”
Who is online
Users browsing this forum: No registered users and 25 guests