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ClubIT.com has the Corsair CMPSU-750TX 750W Power Supply for $152 - $25 rebate [Exp 12/3] + $9 shipping = $127 shipped. [BizRate]
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Seems pretty expensive for a PSU, even with that much power. I got a 700W for ~$80 (with rebates) about six months ago...
Corsair has goor warranties, compare that also
I've got a corsair power supply. It was expensive, and to be honest, I haven't been that impressed with it. All of the cables were a bit burp up requiring that I push the molex pins around to use them.
What are "goor warranties"? Did you mean "poor" warranties, or "good" warranties?
I'd suggest reading this.
They put together a system with a nForce4 board, Core 2 Extreme, 8800 GTX, Raptor + 2nd HD, etc, and still only hit 347 watts under load.
Only when they assembled a ridiculous box with OCed Core 2 Quad Extreme, 2x 8800GTX, 2x Raptors + 2 extra hard drives, 4 sticks of DDR2 @ 2.25v, etc, etc, did they reach 687 watts under load.
So decide for yourself how big of a PSU you really need. Even a Core 2 Quad Extreme with 2x 8800GTs and 2x Raptors would probably pull less than 450 watts.
what would you legitimately need such a large power supply for?
Large power supplies are more energy efficient. You should be buy twice what you need to insure no "low voltage" situations.
#6, perhaps it's marketed towards the same people who would buy a car that can go 180 (mph). Unless you're in a really remote area, you won't even be able to approach the speed, but it's an ego thing to know that you possibly could.
I have a 500w PSU from Ultra (yeah the FAR one) that is 65-75% effiicient, but my 380 Earthwatts is 80 Plus certified.
750W overkill for all but the mad... or those running servers.
I'm sure this is TOP QUALITY.
PS effeciency changes depending on load, so you don't usually want too much headroom or too little as the effeciences tend to peak near the middle.
I STRONGLY recommend the 520 version of this for most sytems.
Go go 5 drive raid and the cooling you need for it + all the rest. Also for a good +12V Single Rail it shines. Not enough specs on the silly link Ben gave us, and i dont care enough to look up the real specs, but i do love ppl that go all out on a system and then get the $30 power supply.
I have a 520W version of this and it is fine for my system which is pretty stout:
2 x 150GB Raptop
500GB Sata Drive
320GB Sata Drive
8800GTS
E6600 OC'd to 3.0GHz
6GB RAM
6 X 120mm Fans
For what it is worth... 520W of Corsair Power has been great.
great power supply for high-end system
corsair power supply's are great!
This is a good power supply. It's certainly not the best 750watt power supply around, but it should be great for just about anyone.
JonnyGuru.com recently reviewed this power supply. Here are some things they found:
The 5V rail is overrated. When loading it up to near the amperage it's rated for, the ripple went well out of spec. However, when the power supply was loaded to the typical 12v heavy loads that modern computers usually put on power supplies, it was fine. As long as you're not pulling more than 115watts max on the 5v rail, you should be fine. (but, it's rated for a 140watt load on the 5v rail)
The ripple on the 12v rail climbs up to a higher(worse) ripple than most other good power supplies, but doesn't get close to going out of spec at all, so that shouldn't be a problem.
3.3v regulation isn't all that great, especially when working at higher temperatures. So, if you've got this power supply loaded up to a fairly high level, and a good 3.3v load on it, you may want to make sure that it's well ventilated. It never went out of spec during the testing, but it did come close. However, since there's almost nothing that can really load this PSU up to it's max load, it's not really worth worrying about, for most setups.
Efficiency is good, as long as you aren't crossloading this power supply(high 3.3v load, low 12v load), staying at or above 80% for all normal(non-crossload) tested loads. This isn't the best available, but it's very good.
The manufacturer(CWT, if you were wondering) chose to install a plastic baffle across half of the fan, in an attempt to guide the airflow to where it was needed. In testing, however, it seems to just lower the airflow a lot. It doesn't cause enough of a temperature rise to prevent the power supply from hitting it's rated loads, but it may impact the PSU's lifetime, and performance decrease over time, if left loaded up for long periods of time. However, for any normal computer, high end or not, this probably isn't a concern, just make sure you've got at least couple other fans on your case.
Overall, it's a good power supply. However, the ThermalTake Toughpower 750watt power supply is currently on sale for $100 at newegg, and that is a superior power supply.
link to thermaltake deal: http://bensbargains.net/deal/49238/
link to review of this power supply: http://www.jonnyguru.com/review_details.php?id=136&page_num=1
actually, that's almost precisely correct. The Inquirer did an article in which they ran an Intel quadcore CPU(OC'd), two 8800GTX's in SLI(also OC'd), etc... , and found that at max load it only pulled about 430watts.
So, almost every computer around, even high-end gaming rigs, only really need a good 500watt or possibly 600watt power supply max. Just be sure to look for one that allows a big 12v load.
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