HighPoint RocketRAID 2320 PCI-Express x4 SATA II (3.0Gb/s) RAID Controller Card

Pros: Very fast RAID for this price point, we're talking 400MB to 500MB per second with RAID 5 read.
Configures multiple RAID sets great. Configured a RAID 1 (2x640 GB WD) as well as a RAID 5 (6 x 1TB WD), and both RAID still peformed great. Even after splitting the RAID, I still got 400MB per/sec on the RAID 5 and over 100MB per/sec on the RAID 1.

Cons: Raid 10 Speed not as good as they should be. Raid 5 worked great, but the RAID 10 speeds were just mediocre. This card actually does much better with RAID 5 than RAID 10, even on moderately small reads/writes.

Motherboard Compatibility - Picky about which MB you use, so are many RAID cards
Chip does run a little hot, but it's probably within spec, but just put a slot fan next to it for $5

Be careful about what parts you buy. I have tested this in a Gigabyte GA-EP43 board with WD 1TB Drives (WD1001FALS), Seagate 500GB (ST3500320AS), WD 640GB, and all is fine. You can probably also use any of the newer Gigabyte EP45 motherboards such as the GA-UD3P, 3R, etc... Did not work in some EP35 boards, an MSI, and also 1 Asus had trouble.

Overall Review: You must know a little about RAID, many of the bad reviews I have seen are baloney.

Myth # 1 -"after using a drive in it - it makes the drive not work if you need to move the drive to a different RAID or computer"
FALSE, I initially created a Raid 5 on this card, but had to move the drives to an Intel RAID, the drives still worked normally.

Myth # 2 - "The drives do not always spin up properly."
FALSE - I tested Seagate 500GB, WD 650GB, and WD 1TB drives, and they all worked perfectly. I was building several servers so rebooted many times. People, if your drives are not spinning up properly, 9 out of 10 times it is YOUR power supply or you put too much on (1) rail of the PS. Also, many power supplies cannot handle near as much wattage as they claim. Otherwise, it might be a MB compat issue.

Myth # 3 - "If you lose a drive in the RAID, the controller cannot recover"
FALSE, in three tests I purposefully disabled a drive to "break" the RAID, the RAID re-built just fine

Pros: A lot of features for the money. Pretty fast for a consumer grade RAID card. It is backwards compatible with some other Highpoint RAID arrays, such as the HPT1740 I upgraded from. Supposedly this has pretty good Linux support.

Cons: Its highly incompatible with my Asus P5Q3 or P5E3 motherboards. You have to flash it to disable it's ability to act as a boot device for it to work with Intel on-board RAID (tested ICH10R, ICH9R). It will NOT work in the second PCIe x16 slot but does seem to work in the first one.

My biggest complaint is the lack of sleep support. My computer went to sleep during an online capacity expansion from a 2TB RAID5 to a 3TB RAID5 array (added a fourth drive). The RAID card freaked out, took itself off line, and then continued the rebuild operation after a reboot. However all data on the array was lost.

You just can't use sleep with this card and Highpoint should have done a much better job of documenting the fact that if you don't disable sleep you could loose all your data. In fact, I still don't see anywhere that says it.

Overall Review: The only reason I'm not giving it a lower score is simply because I'm going to continue to keep using this controller. Even with it's compatibility problems and poor software it's still probably as good as any other cheap consumer RAID controller. Just don't be surprised if you have to fight to get it up and running.