Hello all!
Im pretty new here as you can see.... i need you wise suggestion because im going to change PSU on my pc.

I was searching a silent one, modular and not very expensive.

i found a thermaltake toughpower xt 575W for 85€ here in italy but im not sure its so silent
do you have any suggestion for me? similar brands-models that can offer silence and modularity at a reasonable price ?
thanks in advance

For PSUs, I like to play it on the safe side : pay a little more but get the best I can.
Check out the recommended list on SPCR !
The seasonics are very good (X-650 and the likes) and can be found online on sale for around $100

unfortunately that is true only in USA.... in italy for example Seasonic 560W 80 Plus costs 130 € and this means 180$

What are your requirements? by that, I mean your hardware setup.
In general, I'd suggest the Seasonic X-series or devirates from that serie. Corsair AX for example. Or Enermax Modu87. The Cooler Master Silent Pro M is also modular but perhaps a tad too noisy. 14 dBa/1m. Then there are all the passive ones.

As already said by kuzzia, it depends of your power requirements (and actual case).

As example, up to 200W DC: http://www.bpm-power.com/it/product/8779/
Always as example, up to 400W DC: http://www.prokoo.com/enermax-modu87-em ... -3786.html

For more than 400W DC of continuative (real) load you cannot have silence and modular cabling for (relatively) cheap (IMO): Seasonic X-series is far higher than 85 euros + 20% (the price range I assumed you may accept, due to the Thermaltake example).

actually i have a dualcore E8400, ATI HD 5770 vapor-x, 3 disks, 1 dvd-burner , 4 fans 80x80 and a couple of PCI cards

but i want to buy one in view of the future platform upgrade next year when i will go for a new I7 or new ADM bulldozer
so i suppose minimum should be 450W

the most importat point for me is silence, not modularity at the end.

http://www.3drevolution.it/i/mkg/skp.asp?id_prod=39168

I have it in a small server: it's perfectly adequate to an E8400 or an i7 (Sandy Bridge).
With the Bulldozer, YMMV (far higher power consumption on load than Intel, if you look at Llano or Thuban).

I just bought a BeQuiet Pure Power 300W supply. They have also supplies with larger power. They get very good reviews here in the Netherlands, and are inaudible. 80plus certified and 40 euro.

http://www.be-quiet.net

425W will be enough? if next year i change video card with a more powerful and consuming i dont want to but another PSU...
i was thiking more to a 500W

I would ask if it we'll be enough quiet. That 425W up to 300W DC should be quiet (but it depends also on the case: the PSU intake temp matters).

You have to do some math (or buy an energy meter): just for example, a 2500K with P67 and 5450 (and 1 drive) would go for 90-100W DC at around 4GHz (SPCR test, IIRC).
Your 5770 goes for around 80W DC when gaming. So a gross amount of 155-165W DC, plus the two more drives and the PCI cards (another 40W DC when gaming, to be at large?).

But you have a 775, which is less efficient: according to SPCR a P45 and QX9650 with 1 drive and a 9400GT goes for 140W DC. I think your E8400 should absorb a tad less (not to mention the Nvidia pays a +15W premium over the above mentioned 5450).

IMO/IME you should account for around 200-220W DC, currently, when stress-testing (Prime95+FurMark), and therefore something less when gaming (for the 3GHz 125W QX9650, the difference is 15-30W less, depending of the application).


It depends of which card are you looking at: with reference to your 5770, an average 6970 would add about 150W DC to your actual peak DC power consumption (when stress testing), a 6950 would add around 80W DC more, a 6870 maybe 55W DC, a 6850 just 25W DC more. And so on: eventually, if you look for an ASUS Mars II, you would need probably 630W more.

So, IMHO the 425W should handle quietly up to a 6950, at first sight, when stress testing (Prime95+FurMark).
Above it, there's the already pointed out Enermax 87+ 500W at around 105 euros, to be safe and quiet.

But if you're talking about real loads (gaming), then I think the 425W is (or should be) still enough (but for the most powerful video cards, check twice the max required amperage and the number of needed connectors).

Enermax 87+ 500W looks to be perfect, modular powerful and silent.

thanks, i'll try to search it around europe to see if i can get it at a lower price.

Super Flower Golden Silent 500W Fan-less
http://www.jonnyguru.com/modules.php?na ... 5&reid=244

80+ platinum and best performance within fan less category - actually the only one with these specs

you can find it in Germany at around 150 EUR