My friend's computer have Intel Pentium D. I don't know exactly, But I assume speed is 3 GHZ. But it is not fast as other computers on my school. He have fixed an DVD writer and CD Drive on it. He think,low watts power supply may be a cause for this problem. Is he correct?
What are the specs of this system in full? The Pentium D runs at a variety of speeds, but overall system performance is no longer determined by just the CPU. Mobile CPU's tend to employ a speed reduction mode as to not suck up power. The only reason a desktop CPU would slow down is if it's getting too hot and it slows down to avoid damage to itself. If a power supply were insufficient, you'll have a system shut down out of the blue or crashing when the system were taxed.
There a number of reasons for a slow computer.. When was it last cleaned ? check for Viruses..spyware/trojans/bots... and then Defrag...
