Random speeds for Samsung 830 256GB??

Just installed a Samsung 830 256GB SSD in my HP laptop and the random write speeds seem way low.

It is a i5-m430 processor with 4GB ram. SATA 2 interface. All drivers are up to date and SSD tweaks to Windows 7 64 bit have been done per links found here.

Using Samsungs Magician software I get around 200 MB sequential read and write (which doesn't seem bad) but for random I get 45000 IOPS read and only 5000 write (numbers rounded off). This seems wrong.

Using CrystalDiskMark 3.0 x64 I get 46000 and 5000 IOPS for read/write with QD=32, but only 3000 and 5000 with QD=1.

Do these numbers for random read and write seem correct?? I've searched Tom's charts, graphs and articles and the big difference between read and write doesn't seem correct.

Thanks for any help.
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  1. Forgot to mention, but I've checked and Trim is enabled and it's running in AHCI mode.

    Also, when I migrated from the 500 GB hard drive to the 256 GB SSD I used Acronis True Image 2012 and adjusted the partitions using Windows management tools. I also set the recommended Overprovisioning using the Magician software. The drive has 68 GB free space in addition to the 23 GB unallocated overprovisioning space.
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