Hi all! I'm looking for some advice on upgrades for my 2009 4.1 Mac Pro! I'm not too impressed with the new Mac Pro (prefer the current upgradeable form factor) and I also suspect it's going to cost a LOT, plus here in Italy there's not much market for used Mac Pros, so I decided to upgrade my current machine and hopefully get another 4 years of life out of it (by then the new one should be tweaked and cheaper). My current configuration is: 2,66 Ghz Quad Core Xeon 16 GB (4x4GB) RAM 1066 DDR3 ECC Radeon HD 4870 4x640 GB 7200rpm HDD (1xHitachi, 3xWD Caviar Black) 1xSuper Drive 2 USB 3.0 ports (added with PCI Express card) 2x USB 3.0 2TB HDD (WD MyBook) OS X 10.8.4 and Windows 8 I use it mostly for Photoshop, Lightroom and 3D rendering (AutoCAD, Rhinoceros). Some updates are no-brainers, I'm definitely going to put a Xeon W3680 (already updated the firmware to 5.1), an EVGA GTX 680 Mac Edition and a Blu-Ray burner, what I need advice for are the SSDs and the RAM. Regarding the SSDs (and HDDs): I'm going to purchase two Samsung 840 PRO 256GB (one for OS X and one for Windows), I need advice on how to install them. Currently HDD 1 is for OS X+applications, HDD 2 for Windows+applications, HDD 3 for Time Machine, HDD 4 for Windows backup, one of the externals is for all the data and the other for the backup of important data. At first I thought I'd simply swap HDD 1 and 2 with the new SSDs and put the Blu-Ray burner in the second optical bay, but that would leave me with two unused hard drives, so I thought that the best solution is this: 1- swap the Super Drive with the Blu-Ray burner (I don't think I'd ever need two optical drives) 2- buy this http://www.addonics.com/products/aesn4da25.php or this http://eshop.macsales.com/item/Other World Computing/MM352A52ST/ 3- buy a SATA 3 bootable PCI Express card (suggestions?) 4- install the SSDs in optical bay 2, connecting them to the PCI Express card 5- make two partitions on HDD 1, one for Time Machine and one for Windows backup (would 320 GB each be enough? currently OS X+applications take up 196 GB, and Windows+applications 149 GB) 6- create a RAID 0 with HDD 2, 3 and 4 for important data (projects, photos, etc.) 7- use one external HDD for disposable data (movies, etc) and one for the backup of important data What's you're take on this? Are there any drawbacks or better solutions I'm not seeing? Regarding the RAM, is upgrading to 1333 MHz worth it? For now I'm happy with 16GB, but if I upgrade to 1333 MHz I'd probably go for 32GB, just to be future proof. All the updates (except RAM) would cost me around 1700, do you think they're worth it? Would you do anything differently? Thank you for your suggestions!