However, some more expensive laptops use drives based on the PCIe-NVMe standard, which is sometimes listed as just NVMe or PCIe but is the same thing. Typical mainstream hard drives use the same SATA (aka SATA 3) interface as mechanical hard drives, but that connection is limited to about 550 megabytes per second, which is still four or five times more bandwidth than a hard drive uses. Most consumer and business notebooks don't have room for multiple storage drives, but 1TB external USB hard drives cost under $60.īottom line: Get at least a 256GB SSD, or 512GB if you do more storage-heavy work. See also SSD Performance With Random Data.Some gaming laptops solve this expensive dilemma by coming with both an SSD for key applications and a hard drive for data. The more interesting issue is how well the Apple SSD holds up over time see the various severe duty tests for insight into this consideration. The OWC SSD is about 30% faster than the Apple SSD, though this is unlikely to be noticed by the vast majority of users.īut note that coming SATA 6G SSDs will double the speed, so at that point (soon), Apple’s SSD will look quite slow. Shown below are sustained transfer speeds for the Apple 128/121GB SSD and the OWC Mercury Pro Extreme (the 200GB OWC Mercury Pro Extreme RE showed the same results). Presumably there is 128GB of flash memory inside the case of the Apple SSD, but it’s the usable capacity that must be advertised, not the implementation details, which can vary by technology, and do nothing more than confuse the consumer. OWC’s 200GB Pro RE model would also be 256GB. By Apple’s standards, that makes the OWC offering a 256GB SSD, which would sure make a better sales pitch, but be just as untruthful. Is this the new Apple “iMath”?īy comparison, the OWC Mercury Extreme Pro 240GB offers 240.06GB of usable capacity. To claim 5.7% more capacity than is actually there- imagine if a 16 ounce box of Cheerios contained 15.1 ounces of O’s- imagine the howls of protest and the lawsuits and government action. Apple’s 128GB SSD has only 121.33GB of capacity
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