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post #31 of 100
Thread Starter 
Not so fast!

I would go FSP FX700 over the Enermax Liberty, but I think that the XClio 750W power supply is even better, offering a possible 2 more amps under worse case scenarioes if you use the calculations I have shown above, which would allow for more core overclocking and more peripherals. If you look at their lower wattage power supplies, there are virtually no bad reviews. Worst I saw was average, and they are all rated at 5/5 eggs overall on newegg. It would just seem that no one has purchased the larger ones and/or reviewed them, but I would imagine the same quality of construction would remain in the larger wattage PSUs for the Meridian Technology Corporation that makes the XClio PSUs. Here is the link on newegg, tell me if you think it is worth it over FSP's:
http://www.newegg.com/Product/Produc...82E16817189011

Also, a dual core processor only needs the 12V P4 plug, not the P8 plug that double CPUs require, right?
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post #32 of 100
I'm not so impressed by the Xclio (and the following will apply to many of the other brands mentioned here).

I'm surprised noone mentioned the MTBF (Mean Time Between Failures) Rating. Yes, it's an impressive 100,000 hours. What's quite a bit less than impressive is that it's given that rating with an ambient temperature of 25°C!!! The internal temp in any power supply is actually 50°C or better on average. This is the kind of thing that PSU manufacturers get you on.

Also, notice that there is 40A on the +5v line on the PCP&C 510 SLI as compared to only 28A on the Xclio.
That's pretty significant.

All PCP&C PSUs are rated their advertised output @ 50°C internal temp. This is actually the industrial standard, but it's not adhered to by manufacturers of enthusiast PSUs. I'd be willing to bet that the total workload rating on the '750 watt' Xclio was also rated at a ridiculous and unattainable 25°C. Should this be true, expect closer to about 2/3 that rating in actual use.

After all that, you can also not that absolutely no claim is made by Xclio about power regulation percentage standards, or ripple percentage standards. These are the ratings that are going to tell you just how stable your shiny new PSU will be in use. I've owned many different brands of PSUs over the years... Antec, Thermaltake, Enermax, Sparkle, GODS-know-how-many off brands & no names. PC Power & Cooling are the ONLY ones that have ever given me the rock solid, unwavering voltages I now get. When I first installed mine & booted into BIOS, I went into the Health Status area, and wondered if it was reading correctly. We've all see the voltages flicker a little up & down. These are rock solid. And when you're overclocking, isn't stability what it's all about?

In the end, I'd happily put that so-called '750 watt' Xclio against my underrated 510 watt PCP&C. I would trust nothing less than a PCP&C if I'm building a rig with >$2K worth of hardware in it.

PCP&C Tech Specs


750 Xclio Tech Specs (Scroll to bottom)
    
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post #33 of 100
Quote:
Originally Posted by stargate125645

Also, a dual core processor only needs the 12V P4 plug, not the P8 plug that double CPUs require, right?
That's going to be dependant on your choice of motherboard. DFI's LANPARTY UT nF4 SLI-DR Expert requires the P8, as well as their new CFX3200. Intel's BOXD975XBXLKR LGA 775 board also requires it.
    
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post #34 of 100
Thread Starter 
OK, so if I have a P8 PSU, is it going to work on my motherboard if I get one with a P4 connection?

I understand that PCP&C is an extremely reliable brand, but I explained above that I do not want to spend that much money on it, and the next wattage up for PCP&C is 850, which would be fine were it not $450... I doubt the 510W would be enough to overclock both a conroe and dual x1900xtxs in crossfire, and besides, I still need a 20+4 pin PSU, and PCP&C are 24 pin PSUs according to their website.
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post #35 of 100
Quote:
Originally Posted by stargate125645
Not so fast!

I would go FSP FX700 over the Enermax Liberty, but I think that the XClio 750W power supply is even better, offering a possible 2 more amps under worse case scenarioes if you use the calculations I have shown above, which would allow for more core overclocking and more peripherals. If you look at their lower wattage power supplies, there are virtually no bad reviews. Worst I saw was average, and they are all rated at 5/5 eggs overall on newegg. It would just seem that no one has purchased the larger ones and/or reviewed them, but I would imagine the same quality of construction would remain in the larger wattage PSUs for the Meridian Technology Corporation that makes the XClio PSUs. Here is the link on newegg, tell me if you think it is worth it over FSP's:
http://www.newegg.com/Product/Produc...82E16817189011

Also, a dual core processor only needs the 12V P4 plug, not the P8 plug that double CPUs require, right?
You're too caught up on posted specifications. There is no governing body or guidelines to adhere to concerning wattage,etc. Ever go to the swap meet and see a $20 car amplifier that claims 200W? Get the Fortron (FSP) and it'll power your entire rig with some power to spare for OCing. If you want to stay focused on the numbers, look at what you're reading very closely. At what temperature are those specs tested? Is it peak or sustained power output? Also, don't toss out efficiency as unimportant. Drawing that much power for a year or 2 will add up with an inefficient psu. There were several nice psus suggested in this thread, but if it were me, I'd choose the FSP if the budget didn't warrant a PC&C. I wouldn't roll the dice on a XClio
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post #36 of 100
Thread Starter 
OK, thank you for the advice sccr64472. Few PSUs actually state what temperature the MTBF is at (including the FSP PSU), so there is no way to tell. Unless someone wants to give me the money I am not going to pay $450 for the PCP&C PSU.

Just for clarification, the PCP&C 510W PSU states that it has twice the power of home PSUs. What does that mean?
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post #37 of 100
This is just my opinion.
I plan on a similar setup by the end of the year, conroe dual x1900xtx's. For now I was looking at the FSP 700w psu. However the more I thought about it, the x1900xtx is pretty solid on it's own, why spend another $500 on a GFX card when the new dx10 cards are going to be released, take that extra $500 or so and buy a rock solid 850w/1000w PCP&C Unit, and never worry about upgrading, to a new PSU, not to mention their ratings/tests that are run on them and their nice 5yr warranty. I want another x1900xtx just as much as the next guy, but Im putting it on hold for the PSU (PSU imo is the most important part to a computer) Just my 2c
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post #38 of 100
Quote:
Originally Posted by Gattzumaul
This is just my opinion.
I plan on a similar setup by the end of the year, conroe dual x1900xtx's. For now I was looking at the FSP 700w psu. However the more I thought about it, the x1900xtx is pretty solid on it's own, why spend another $500 on a GFX card when the new dx10 cards are going to be released, take that extra $500 or so and buy a rock solid 850w/1000w PCP&C Unit, and never worry about upgrading, to a new PSU, not to mention their ratings/tests that are run on them and their nice 5yr warranty. I want another x1900xtx just as much as the next guy, but Im putting it on hold for the PSU (PSU imo is the most important part to a computer) Just my 2c
Could not said that better myself! Get the 1000W, the price difference is minor. (~$20 right now on Newegg), and the extra 6A on the heavy 12V rail and the extra 12A total available on the 12V rails is worth it.

To Witchfire: The comparison of 25C Ambient and 50C internal is a bit like comparing apples with oranges. I agree, Xclio and other manufacturers make it hard to compare. 25C ambient (i.e. the temperature in my living room) is not bad, although it fails to take into account the actual operating temp. of the PSU. Xclio does make a mistake reporting their reliability like this, loosing my confidence in the product. At 25C ambient, the internal temp can be anything.
    
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post #39 of 100
While Im thinking about it, Xclio (I've never heard of) and taking into account the importance of a PSU, I recommand, name brand, high reviewed, well known PSU manufacturers. I assume that a quick search in the PSU forums here will yeild some high rewards, opinions, reviews, what to expect from certain companies etc etc. It's just like everything reseach like a motha before you purchase something. Research is your friend
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post #40 of 100
Thread Starter 
I want my power supply to be able support that setup, but that does not mean I am going to purchase the second x1900xtx right off the bat. I was going to purchase one until I could not run games at high settings with more than 25fps, and then see which was more economical - the newest card or the crossfire setup.

The 850W PCP&C PSU requires a larger case though too. Anyone know of any cases that will work with a power supply that large?

Also, I have mentioned before that I need a 20+4 pin power connection to support my current piece of crap motherboard. So, if I am to get this 850W monster, I will need an adapter. Any links to those?
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