97% of the reviews on Amazon.co.uk give this product a positive rating.

90% of the reviews on Amazon.com give this product a positive rating.

Excellent sequential data performance ; TRIM support in RAID ; Decent price

Random 4K performance could be better ; Reliability concerns ; Firmware update introduced more bugs

Excellent all-round performance ; Price ; 5 year warranty shows confidence in design

ZIP file decompression could be better ; Longevity not proven yet

The OCZ Vertex 4 currently sits at the sweet spot for SSDs: It's very fast and relatively affordable, and it has 16GB more capacity than many of its competitors.

Silky smooth operation as a system drive., Excellent sequential reading and writing performance., Outstanding 4K random I/O performance at low and high queue depths., SATA 6Gbps support., TRIM support under Windows 7., Ultra fast access times.,...

Nothing to mention

Let us summarise the most important positive and negative points below: Throughout this review, the OCZ Vertex 4 has gone head to head with the best of the rest, and that includes SSDs such as the Intel 520, the Crucial M4, Plextor PX-256M3, and OCZ’s...

Good synthetic and real-world performance ; Quick firmware updates ; Price ; 5 year warranty

Less-than-optimal non-TRIM environment performance ; Semi-plastic case

Thanks to quick and effective firmware updates, the Vertex 4 128GB has rapidly matured into an excellent drive that continues the legacy

OCZ's latest SSD refresh gives SandForce the boot and utilises its own in-house controller.

OCZ’s latest crack at the SSD market has impressed me.

Very fast, especially with small files ; Best AS SSD results we've ever seen ; Good price ; Comes with a 2.5" to 3.5" adaptor ; 8GB more space than the previous generation

Offset mounting on the 2.5" to 3.5" adaptor doesn't look as nice as centered would ; Doesn't quite manage to speeds the box says it will ; Mail In Rebates on older drives make them significantly cheaper. If you like MIRs

OCZ's latest crack at the SSD market has impressed me.

One of our goals here at Tom's Hardware is to test the latest hardware thoroughly, so that you can be sure you have a complete look at performance before making a buying decision. OCZ's claim that the Vertex 4 should recover compelled us to collect...

The original Everest controller OCZ used for its Octane SSDs left us disappointed – the 1.13 firmware we reviewed it with was noticeably slower than both Crucial’s M4 and Samsung’s 830 drives. Thankfully, with the Vertex 4 256GB, OCZ has shown us that...