Actually I just picked this up from my local PC store (W0061 version with PFC); http://www.thermaltake.com/product/... I guess this will be OK?

0

Thermaltake is a decent brand, but you really should have more amperage on the +12v rails, preferrably 18A on each.

0

Yeah, I was just comparing the specs on the two PSU's and the one I have in has very similar specs with the thermaltake only having more on the +5v (28A as opposed to 20 on the Liteon) and 12v2 (15A as opposed to 13A on the liteon). I am happy to put the Thermaltake in but looking at these figures will it actually be any better than the liteon? It is still sealed so can be returned.

0

Having enough amperage on the +12v rail is critical these days. The +5v rail isn't nearly as important as it used to be. If you see more than 20-30A on the +5v, it's usually because the PSU manufacturer is trying to inflate it's overall wattage rating. for example: 5V * 25A = 125W 5V * 40A = 200W So by stating 40A, the rating can be bumped up by 75W. And since the +5v rail is underutilized, that extra 75W is basically useless...but it looks good on paper. Now I'm gonna throw a curve at you. The splitting of the +12v rail into +12v1, +12v2, +12v3, etc with a max of 18A each is something that's only been around for a few years...prior to that, PSUs had just one +12v rail that might have 20, 30, or more amps. Now read this article: http://www.theinquirer.net/default....

0

I picked some of this up on another site Jam but now I am confused. The Liteon PSU in the new PC would seem to have 23A spread across two rails giving 276Watts and the 3.3 and 5 combine to give 166W-total=442W However case says maximum on 3.3 and 5 rails is 130W and 12v rails 20A (or 240Watt). Either way is that not 370 Watts? PSU states that at ambient 25 degree output should not exceed 300W, and at 50 degrees it should not exceed 270 Watts. If an extra 5A (60W) on the 12v of the Thermaltake makes that PSU a 420Watt, surely the Liteon is a 360 Watt PSu...and if the thermaltake would run a gefroce 7900GT why would the Liteon struggle?

0

Here's just a few of the PSU articles I've bookmarked: http://www.anandtech.com/cpuchipset... http://www.devhardware.com/forums/p... http://forums.nvidia.com/index.php?... http://www.rose-hulman.edu/~freemaw...

0

splinters, this has been an interesting thread to follow. If you are happy with your current PSU, stay with it. I think that the 420 watt Thermaltake that you linked above and the 600 watt Ultra that I made reference to in my post give you more head room but it's your call. Good luck.

0

thanks Doctor, at the moment my PSU is fine but I have yet to put the Geforce 7900GT in yet and I wanted the right PSU in before I installed it. If only I could get the real deal on the Liteon PSU I could decide if the TT is really any better. Bottom Line; I am not really a power user-odd game of Quake 4 or Half Life 2. Most of my time doing contract 3D rendering work using trueSpace 7 (I designed the icons and the UI for that program) and Photoshop CS2 usually at the same time. I won a nice card and want to use it but want a nice stable AMD dual core 2gb Ram system because I use it for my work. I got no help from Acer-you guys have been great.

0