Any performance limits we found while testing the SanDisk Extreme 480GB are nullified by one simple fact - $359. That price makes the SanDisk Extreme 480GB SSD one of the lowest priced, high capacity SSDs on the market, and it's not even a drive with low performance asynchronous flash. It even costs less than the OCZ Agility 3 480GB, one of the lowest priced async flash drives currently listed at Newegg. SanDisk gets a really big thumbs up for the price.
In order to get to that price though SanDisk had to do two things. The first is co-owning the NAND flash factory. The price really shows the advantages of having your own fab. The second thing SanDisk had to do was skimp on the accessory package. This one has an effect on your user experience because you might need to buy a desktop adapter bracket if using the Extreme in a desktop. Notebook users really don't have to worry about the adapter bracket, but without data migration software, you might find yourself in a situation where you have to spend some money to avoid reinstalling Windows.
Still though, the price trumps anything I could possible say since it's paired with a mature controller with high quality flash. For those still wondering, TRIM is now fixed on SanDisk Extreme drives with firmware R211 and is no longer an issue. It's just a footnote in history now.
We've tested a number of capacity sizes in the SanDisk Extreme line up now and would recommend all of them. SanDisk found an opening in the market and made sure the Extreme SSD would stick as the low price and no frills high performance SSD. It's really hard to go wrong when offering one of the fastest SSDs at the best price.
The 480GB model though does have a few notes to go with it though. Newer products on the market have higher write performance especially when dealing with 4K. The price jump negates the higher performance in the write department though since you won't see much of a difference after you get your programs installed and your system setup for daily use.