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OCZ RevoDrive X2 240GB PCIe SSD Review

OCZ RevoDrive X2 240GB PCIe SSD Review

OCZ RevoDrive X2 240GB PCIe SSD Review

The OCZ RevoDrive X2 240GB PCIe SSD

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OCZ package the RevoDrive X2 in a stylish box which has a simiar design to the original. On the front they list a few key product features and on the back we get an image of the product as well as a little more information. After removing the outer cover we find a thicker inner box and in this is the drive itself, wrapped in an anti-static bag and surrounded by foam.

Bundled with the RevoDrive X2 is a small manual which points us to the OCZ website for the latest driver and a small case sticker.

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The RevoDrive X2 uses a black PCB and PCIE 4x interface and the base product is essentially identical to the original model. Attached to the front of the main PCB is the Pericom PCIe Bridge, Silicon Image 3124 RAID controller, two SandForce 1200 series controllers and 60GB of 34nm MLC Intel Flash. Flipping the card over we find that the main components on the back of the RevoDrive are a further 60GB of Intel flash, split into 4 rows of 4 chips. Also worth noting are the LEDs at the top left of the main PCB, these inform us of the unit status, including whether there is a fault found.

In our review of the standard RevoDrive we hinted at possible expansion possibilities of the product through the inclusion of two extra LEDs and a connector location in the centre of the PCB. That has come to fruition with the X2 as these are now populated and connected to the interface in the centre of the PCB is a daughter board. This smaller black PCB has two additional Sandforce controllers attached to it, along with a further 120GB of MLC Intel Flash and it is securely bolted in place, held by four screws.

When formatted the drive has 223GB available in Windows and in terms of performance OCZ list read/write of 740/720MB/s (the original was 540/480MB/s) and sustained write of 600MB/s (vs. 400MB/s). Part of this is down to the fact that we essentially have four Vertex 2 based 60GB SSDs in RAID 0 but in addition to this the impressive ratio of read to write and that is down to DuraClass Technology which present on the SandForce 1200 controllers. For the 1200 Series there is no data cache to slow down operation of the drive, instead the controller utilizes data compression techniques and algorithms to reduce the amount of data which is written to the drive. For data that does need to be written efficient Page Management algorithms ensure maximum write performance.

OCZ list the mean time between failure as 2 million hours, shock resistance at 1500g and 4KB aligned IOPS at 100,000 (vs. 75k on the original). Trim is not supported on the RevoDrive Series due to a limitation of the Silicon Image chip which does not pass the commands through to the SandForce controllers.

OCZ offer a 3-year warranty on the RevoDrive and also offer 100, 160, 360, 480 and 960GB variants.

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About Author

Stuart Davidson

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