Pros: I have this and the SANS DIGITAL TR4UTBPN. I got the SANS because of the hardware raid. However, I found the hardware raid isn't really needed, and the vantec has a sort of hardware raid already. The Vantec is excellent, looks different and has great cooling. The SANS nor Vantec would work with windows raid (win7 pro 64) so don't listen to anyone who says it does. I contacted the manufacuter of the SANS and they confirmed this. You must use the included (or downloadable) software. Here's the great thing. The SANS can be configured with the software to act just like the hardware raid, and so can the Vantec. The cool thing about the SANS is you set the dial to whatever you want and the enclosure can be moved to any PC without haveing software installed. The Vantec has the exact same ability with the SANS software. You'll notice a lot of these types of encolsures are the same. Some have more or less ports, but that's pretty much it. Well, I think they all have pretty much the same chipsets (between similar models), just the absense or presence of dials or ports that they can charge more for. It's more cost effective to make the same enclosure and tweak them at the end. Using the SANS software, I was able to make any kind of raid I wanted on this Vantec. I then moved (at the time a raid 0) the enclosure to 2 different dell laptops that are confirmed NOT to have port mulitplier on the esata ports and both worked with the Vantec flawlessly. I then removed the raid, back to default and the same laptops would not see more than one drive on the esata ports. This was done with no raid software on either of them. So, what you can easily do is connect this enclosure via usb, use the SANS software to set your raid, and your are golden! The Vantec does indeed save your raid settings when powering off and moving and it will work on a non port mulitplier esata port. I paid 95$ with free shipping for mine and I wish I had just gotten another instead of the SANS. But, I didn't know and there was a restocking fee on the SANS, so I kept it.

Cons: It is hot swappable, but it's kind of a pain. A tool less soloution would be great. But, I don't really use this feature. The fan can get loud, but the plus is it works quite well. It's adjustable to a reasonable level that still cools better than the SANS in my opinion.

Overall Review: I'm sure SANS or others don't want you to know about using their software (free download from SANS site) for other enclosures, but too late. I see others have had trouble powering 4 drives, but I havne't. They must have had faulty units. I have not tesetd any of this with usb 3.0. Only 2.0 and esata. I recommend esata if possible anyway.

Pros: Meets standards, provides power like it's supposed to.

Cons: Non-standard power plug (why???) Dedicated fan cables are a nice idea, but have no power. A single 80mm 3500rpm fan (rather fast I know) will make the psu shut off after a little bit. I imagine even a couple slower fans would do the same. So they are kinda pointless. Expensive for what you get. Look around and better can be had for less.

Pros: I've purchased 7 of these when they were on sale for ~$13 which is a sick deal. It looks like they are $36 now which is way too high. One is used in my car with a 120gb SSD formatted to fat32 and holds around 60gb of music, works great. The others are used with 500gb win PE bootable drives at work for imaging and various other items. I've had several external enclosures for this and these are my favorite. The cable is built in, won't snag and you won't lose it. It's one less thing to go searching around in the bottom of a bag for. All my co-workers like them and all have performed perfectly at usb 3.0 speeds just like every other usb 3.0 enclosure I have.

Cons: The price? I got them cheap, but at $36 that's just crazy. The enclosure has tiny screws and it would be nice to see a tool less design, but it's not worth taking an egg away.

Pros: Great PSU, especially when it can be found on sale w/ rebate. Has been running non-stop 24/7 for months pulling ~1150 watts from the wall (measured with kill-a-watt. HardOCP "torture test" was to run it at 1113 at the wall for 8 hrs...)

Cons: Gets hot on the back. Exhaust doesn't feel hot though. Not taking an egg as I know pulling that much power all the time makes heat, just a fact.

Overall Review: Don't know what guy below is talking about with the multiple rails. HardOCP says nothing of the sort and loads the 12v rail with 100 amps for their testing. Look it up. Maybe he has dual xeons or something. I don't know how there's 1100 watts pulled from the wall with SLI 680's. Maybe because it's a lie? I have 670 SLI, OC to max stable clocks, i7 4.7 ghz and topped out stress test pulls well under 700 at the wall. And this is with a XFX SILVER rated PSU so the wattage at the wall is higher than this seasonic. Not sure what his agenda is, bad PSU's get shipped every once in a while, it could have happened.

Pros: I got one of these in sept and another a month or so later in SLI. If you want to play skyrim with mods, maxed out crysis 3 and be ready for the next year or two of games that will have more high res textures, there's no need to look at a 2gb card, even at 1080p. If you want to play maxed out far cry 3 and cysis 3 (well, pretty much maxed) at a smooth 60 fps, you'll need two of these. One is still very good though. When you get up into the high AA, it's much more demanding. I think that 2 of these at 1080p will carry you at max or nearest to max as to not mattter at 60fps for at least a couple years. Use EVGA to overclock and monitor, or afterburner. Don't even bother with the galaxy utility.

Cons: The first card is slower than the second. It still meets the specs that it shipped with, but the second far exceeds it and has even more overclocking room. I have to clock my first 50mhz higher just to match the stock speed of the second card. I just wish they were both like that. Can't complain too much though, as I said it meets the advertised OC speed and even goes beyond that a little.

Overall Review: All the 4gb 670 cards seem to be sold out. I think that's a testament to the value of the 670 and the need for 4gb cards given the new and projected games that will be coming out. You need to at least meet the new consoles half way.

Pros: I have this and the VANTEC NexStar HX4 NST-640SU3-BK enclosure. I was going to get 2 of the Vantecs, but the price/reviews led me to believe that it wasn't a quality product. The SANS encosure here is the same used by several other manufactures. I think the main difference is the software and inclusion/exclusion of usb 3.0. I can't comment on the usb 3.0 port, only that 2.0 works great and esata does too. The raid dial works as you expect and if you like you can use their raid software instead of the dial. The newest version can be obtained from their site. The software is rather basic but has all you need. I doesn't work with gmail, but it does work with comcast email. I've forwarded messages from this encolsure in comcast to go to my gmail. (This is for notificaitons) Seems just as fast as any other esata enclosure, although I havne't done any comparisons.

Cons: It will hot swap if you leave the thumb screws out, but I've found a very annonying and rather loud resonance if you do. If I open the door or move it around a little, it stops for a bit. Putting the screws into the HDD's stops this. The sata cables are too long inside the encolsure. They needed 4 to 6 inch cables and it looks like the are all a foot. The were all bunched up right in front of the fan so I don't know how bad the air flow would have been. I moved them around and it's better. The software is functional but it needs to be able to work with gmail. Yahoo and hotmail are included in this as they all use the same pop settings.

Overall Review: If you don't really need usb 3.0, I would go with another enclosure that's esata and a good bit cheaper. The best buy for the money is the VANTEC NexStar HX4 NST-640SU3-BK. I'll be doing a review for that soon.