Amazon is currently offering the 512GB Samsung P9 microSD Express Card at a great price with a 33% discount. The P9 Express uses Samsung V-NAND TLC flash memory paired with the SM2708 controller. It supports the SD Express standard, utilising a PCIe Gen 3.0 x1 interface with NVMe 1.3, and is compliant with SD 7.1 specifications. Backwards compatibility with UHS-I devices is supported, allowing operation at reduced performance levels. Furthermore, Host Memory Buffer (HMB) support is also included.
Performance figures vary depending on the interface in use. In SD Express mode, sequential read speeds reach up to 800MB/s, while UHS-I mode supports read speeds of up to 90MB/s. The card carries U3, V30, and A1 speed class ratings. Moreover, random read and write performance using SD Express reaches up to 65,000 IOPS read, and 52,000 IOPS write at 4KB QD32, and up to 9,000 IOPS read, and 30,000 IOPS write at 4KB QD1. In UHS-I mode, random read and write performance is rated at up to 2,000 IOPS.
It is rated for operation within a temperature range of 0°C to 45°C and can withstand non-operating temperatures from -40°C to 85°C. The card is also rated to withstand high-humidity conditions of 40°C at 93% relative humidity and 85°C at 85% relative humidity. Durability is rated at 10,000 insertion and removal cycles. Finally, the card complies with international electromagnetic compatibility standards and holds CE (UKCA), FCC, VCCI, and RCM certifications.
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512GB Samsung P9 Express microSD Express Card: $79.99 (Amazon US) - 33% off
Alternatively, you can also check out the 256GB variant, which is available at a 27% discount.
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256GB Samsung P9 Express microSD Express Card: $39.99 (Amazon US) - 27% off
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