Why not the OCZ Technology 500 GB Colossus Lite Series SATA II 3.5-Inch Solid State Drive (SSD) OCZSSD2-1CLSLT500G (or 256 version)
Already 3.5" and no need for an adaptor.
specs:
http://www.ocztechnology.com/products/solid_state_drives/sata_3_5_solid_state_drives
about $1,399 and $700ish respectively.
Home CategoriesSolid State DrivesSATA II3.5" SATA IIOCZ Colossus LT Series SATA II 3.5" SSD
OCZ Colossus LT Series SATA II 3.5" SSD
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OCZ Colossus LT Series SATA II 3.5" SSD OCZ Colossus LT Series SATA II 3.5" SSD OCZ Colossus LT Series SATA II 3.5" SSD OCZ Colossus LT Series SATA II 3.5" SSD
Description
Specifications
3.5" Solid State Drive / SATA II / MLC / 128MB Cache / Internal RAID 0 / Dual Controller Design / 128GB-1TB
The Colossus LT 3.5” Solid State Drive Series is designed to meet the performance ideals of consumer desktop and enthusiast clients with cost-effective MLC NAND flash. The Colossus LT Series is the latest solution for prosumers and enthusiasts looking to take advantage of the benefits of SSD technology and maximize their storage arrays.
Colossus LT SSDs deliver exceptional performance for high-end desktops and are the result of OCZ’s latest breakthroughs in flash based storage. Designed to offer PC enthusiasts a best-in-class storage upgrade from traditional hard disc drives, the innovative Colossus LT Series features incredible speed and ample storage for the complete gamut of gaming, multimedia and demanding productivity applications. The Colossus delivers all the proven benefits of SSDs such as superior system responsiveness, ultra-fast data access, and greater durability, while providing the storage capacity desktop users demand.
Available in 120GB, 250GB, 500GB, and 1TB (1024GB) configurations, the Colossus provides ample room for the complete spectrum of desktop applications. In addition, this series has an excellent 1 million hour mean time between failure (MTBF) and comes backed by a leading 3-year warranty and dedicated technical support, ensuring peace of mind over the long term.
Important SSD notes:
Solid State Drives DO NOT require defragmentation. It may decrease the lifespan of the drive.
Consumers may see a discrepancy between reported capacity and actual capacity; the storage industry standard is to display capacity in decimal. However, the operating system usually calculates capacity in binary format, causing traditional HDD and SSD to show a lower capacity in Windows. In the case of SSDs, some of the capacity is reserved for formatting and redundancy for wear leveling. These reserved areas on an SSD may occupy up to 5% of the drive’s storage capacity. In OCZ’s Indilinx-based 3.5" SSDs, the naming convention reflects this and the 250 is equivalent to the 256GB, the 500 is equivalent to 512GB, and so on.
Rated speeds may vary slightly depending on the benchmark used, drivers, windows version, bios version and file size. We recommend using ATTO and IOMeter for benchmarking RAIDed SSDs.
* Available in 128GB, 256GB, 512GB, 1TB capacities
* Internal RAID 0
* Dual-Controller design
* 128MB Onboard Cache
* Cost-effective MLC NAND
* Supports Background Garbage Collection
* Seek Time: < .1ms
* Lightweight Aluminum Casing
* 146 (L) x 101.6 (W) x 25.4mm (H)
* Operating Temp: 0°C ~ 70°C
* Storage Temp: -45°C ~ +85°C
* Shock Resistant up to 1500G
* MTBF: 1 million hours
* Compatible with Windows 7, XP, Vista, and Linux
* 3-Year Warranty
Max Performance 120GB
* Read: Up to 260 MB/s
* Write: Up to 260 MB/s
* Sustained Write: 140 MB/s
* Max IOPS: 15,000 (4K random)
Max Performance 250GB-1TB
* Read: Up to 260 MB/s
* Write: Up to 260 MB/s
* Sustained Write: 220 MB/s
* Max IOPS: 15,000 (4K random)
Helps alot... Just ordered me one now. 
