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Old 08-26-2019, 12:40 AM
WorldStudios WorldStudios is offline
Join Date: Nov 2003
Location: Sweden
Posts: 807
Default Re: NVMe upgrade for Mac Pro 4.1/5.1 Mojave

Good morning! I would like to share my findings regarding putting an older AHCI blade in the Crest card. It makes the drive faster. The write speed almost doubled. Probably because the old adapter card was not as fast and/or seated in a 4x Pci slot. The top one. The crest card is in the lowest available 16x slot. So, the pictures show the same drive, a SAMSUNG MZHPV512HDGL in a regular simple PCI host card (lower values) and then in the Crest card slot 2. Slot one on the Crest card holds a Samsung SSD 970 PRO 1TB and that is much faster. The 970 Pro gets to 2600 write and 2800 read on a good day.
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Johan Bejerholm
World Studios

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