nevans Posted December 8, 2009 Share Posted December 8, 2009 I'm new to having to understand power supply specifications, so please bear with me! Also, I'm not a gamer but just use my PC for email, usenet, file downloading and internet browsing. I purchased a VX450W from Newegg thinking it would work in my old Presario 5000 5WV254 that I bought in November 2000, but it doesn't. There isn't even a sound of any kind when I try to turn on the PC. No lights, no sound, no nothing - just silence. I'm currently using a WT480 480-watt psu. I added several pieces of hardware last year. At that time, I bought the WT480 from a site that offered the power supply based on the fact that I have a Presario 5000 5WV254. The power supply - which sounds like the jet engines are ready for the PC to take off into the sky - lasted about 10 months at which time the fan started to "act up" on cold boots at times. It was still within the site's one-year warranty, so they sent a replacement. It works but listening to this airplane engine is getting a little old. And the fan has already "acted up" a couple of times. I want to get a Corsair. The VX450W looked like a good fit. I'm now thinking that the reason it doesn't work is because the +5V rail(?) pin(?) doesn't have enough amps. The original Compaq-branded PSU had +5V@25A where the VX450W has +5V@20A. Is it possible that the VX550W - which has +5V@28A - would work in my system? I do know that the absence of the -5V rail is not a problem because the WT480 does not have it and my system runs just fine without it. By the way, the VX450W is not defective because when I put it into a newer Compaq SR5710Y that I got earlier this year, it works fine and I'm going to leave it there as a replacement for the original Bestec power supply. Link to comment Share on other sites More sharing options...
Wired Posted December 8, 2009 Share Posted December 8, 2009 Systems from 9 years ago were using ATX12V 1.1 spec, whereas any new Corsair PSU supports the latest ATX12V v2.2 standard and is only backwards compatible with ATX12V 2.01 systems. Link to comment Share on other sites More sharing options...
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