OCZ 256GB Vertex 4 Industry's Highest I/O Performance Up to 120K IOPS SATA 6.0 GB/s 2.5-Inch Solid State Drive With 5-Year Warranty - VTX4-25SAT3-256G -> Amazon $189.99

do it!

This drive is fast in certain synthetic benchmarks but is slow for real world apps. It has poor low queue depth performance and very slow with compressible data. The Vertex 3 is actually much faster than this drive for the typical users who use their computer for loading games and apps.

Quote from skv : This drive is fast in certain synthetic benchmarks but is slow for real world apps. It has poor low queue depth performance and very slow with compressible data. The Vertex 3 is actually much faster than this drive for the typical users who use their computer for loading games and apps.

Have you used both drives and can post timings or are you making it up/regurgitating what you heard elsewhere? Amazon and other reviews don't seem to back up what you just said. Here is one reviewer who says they swapped out a Vertex 3 for the 4 and got much better results:

>>I will update my review after i've used the drive for a longer period of time but i'm going from a 240GB Vertex 3 to a 256GB Vertex 4. Boot time is definitely faster (from 15 seconds down to 11 seconds). In other things i dont feel a noticeable speed difference but my disk benchmark has improved.

My previous score was 473 and now its 507 (see below) -

Results 398.24
System Info
Xbench Version 1.3
System Version 10.8 (12A269)
Physical RAM 16384 MB
Model MacBookPro8,1 (Core i7 2.7GHz)
Drive Type OCZ-VERTEX4
Disk Test 507.23
Sequential 308.01
Uncached Write 853.00 523.73 MB/sec [4K blocks]
Uncached Write 503.36 284.80 MB/sec [256K blocks]
Uncached Read 130.04 38.06 MB/sec [4K blocks]
Uncached Read 467.81 235.12 MB/sec [256K blocks]
Random 1436.14
Uncached Write 2320.46 245.65 MB/sec [4K blocks]
Uncached Write 922.61 295.36 MB/sec [256K blocks]
Uncached Read 2673.24 18.94 MB/sec [4K blocks]
Uncached Read 1115.67 207.02 MB/sec [256K blocks]
<<

There are other reviews from folks upgrading from the Vertex 3 reporting improved performance so I ask again - do you have anything to back up your claims?

I read a ton of reviews online. I'm too lazy to pull them out now. Some of these reviews show load times for apps and the Vertex 3 was faster than the Vertex 4.