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The case is very simple, with a metallic gray paint covering a metal alloy body.


Our review model included branding from both Micron and Crucial, with the top cover aimed at the consumer market and the bottom cover showing what OEMs would receive. The multi-use case can be setup in both 9. With shorter screws the drive can be instantly converted to handle different mounting configurations. The front of the Crucial m4 offers the industry-standard SATA power and data connection, with no service pins exposed for firmware flashing modes. Disassembly The GB Crucial m4 is very easy to take apart after removing four Phillips head screws from the top of the drive. With the screws taken out, the top cover lifts off, allowing you to remove the shim and carefully lift out the circuit board.

We should note that while our review model doesn't have a "Warranty Void if Removed" sticker on it, all of the retail and OEM drives will. With Micron's close partnership with Marvell, they are able to get access to controller variations not offered to other companies. The muscle behind the m4 is Micron's own 25nm flash. It was interesting to see little change and a drop when looking at the 4K random transfer speeds at a queue depth of 1 on the m4 compared to the older C Crucial m4 2.5 SSD older C measured Expanding Crucial m4 2.5 SSD 4K read and write tests out to a queue depth of 64 showed slightly different behavior.

Crucial m4 Specs - CNET

The C still maintained a clear advantage in read speeds, but the m4 was able to Crucial m4 2.5 SSD up the slack as it turned to write speeds. The one noted change though were the slightly higher recorded random 4K write speeds. Looking at our server profile tests the Crucial m4 still lagged behind the C in every scenario. Performance was comparable between the m4 and Intel SSDwith each drive playing leapfrog between tests. One interesting performance trait of both the C and m4 on the database benchmark is they both sharply drop off between the 32 and 64 queue depth mark. Real-World Benchmarks If you are Crucial m4 2.5 SSD first time visitor on StorageReview, one thing we try to focus on is how any given drive might perform under real-world conditions.


For the average user, trying to translate high random 4K write speeds into an everyday situation is pretty difficult. It also doesn't make sense to assume that a drive with very high sequential speeds is going to perform great in the real-world if it can't cope with mixed random activity. To really see Crucial m4 2.5 SSD drives perform under normal work-loads you need to record the exact traffic being passed to and from the device, and then use that to compare drives against one another. For this reason we turned to our StorageMark traces, which include HTPC, Productivity, and Crucial m4 2.5 SSD scenarios to help our readers find out how well a drive might perform under their conditions. Before continue with our real-world benchmarks, one area we need to address surrounds our Productivity trace.

In the past most SSDs have charged through this trace providing valuable and worthwhile information, although that is heavily dependent on how the drive can cache byte aligned information. On the Crucial m4, Micron made changes to the firmware to put more emphasis on 4K-aware operating systems, dropping support for legacy systems with the goal of improving 4K-aligned performance. The result is much slower performance on legacy systems and slower numbers in our Crucial m4 2.5 SSD trace. We are transitioning to a newer 4K-aligned trace in this category soon, to go along with our HTPC and Gaming traces for newer drives.

Crucial M4 GB Internal " (CTM4SSD2) SSD eBay

The first real-life test is our HTPC scenario. In this test we include: In this trace we recorded 2,MB being written to the drive and 1,MB being read. As we mentioned above, performance in this non-4K optimized dropped well below the performance of other SSDs, including the C Luckily for most buyers of the m4, using it with Windows 7 or other 4K-aware operating systems will put it in an optimal setting where it can perform much better than in this trace. The downside is buyers who still use Windows XP or Vista will see far worse performance on the m4 than if they used Crucial m4 2.5 SSD different model Our second real-life test covers disk activity in a productivity scenario. For all intents and purposes this test shows drive performance under normal daily activity for most users.

In this trace we recorded 4,MB being written to the drive and 2,MB being read. Our third real-life test covers disk activity in a gaming environment. The trace captures the heavy read activity of each game loading from the start, as well as textures as the Crucial m4 2.5 SSD progresses. In this trace we recorded MB being written to the drive and 7,MB being read.

We found the m4 to lower its power consumption in every category except sequential read, which was only a hair above the C Warranty Crucial stands behind the GB m4 with an industry-standard three year warranty. They also claim that the m4 is good for a total of 72TB of total data written to the drive over its lifespan. This translates out to roughly 40GB of data written to Crucial m4 2.5 SSD drive per day over the expected 5-year lifespan. Overall the m4 is a nice progressive upgrade over the C with the exception of legacy byte alignment performance. Micron also gets a nod for using largely home grown parts, except the controller, which generally means consumers can expect a tightly integrated SSD with little chance for internal compatibility issues.

Micron even develops the firmware in-house, giving them a leg up when it comes to tweaking they way they want and offering a path for continued development in a timely manner. The m4 can't quite hang with the new SandForce controlled drives, but Crucial does have an ace up its sleeve The m4 is also generally cheaper than it's Marvell-based competition as well, giving it a pretty attractive value proposition.

Crucial m4 SSD Review (256GB)

Crucial m4 inch SSD. Firmware updates. Crucial m4 inch SSD. Version H - Windows® 7 Updater Application; Released April 2, 2MB. Award-winning quality. Award-winning performance.

The award-winning Crucial® m4 SSD delivers powerful performance gains for SATA.

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