On October 26th， Bai Wei announced the release of an 8TB version for their X570 PRO series SSD. This marks a significant milestone as it is the first 8TB PCIe 5.0 SSD to be launched by a domestic brand in China. Previously， such ultra-large capacity PCIe 5.0 SSDs were primarily offered by international manufacturers like Samsung and Western Digital.
Last year， Lexar also introduced an 8TB SSD， the ARES， but it was limited to PCIe 4.0， which naturally offers a different performance profile compared to the latest PCIe 5.0 standard.
The new Bai Wei X570 PRO 8TB SSD inherits the design philosophy of its 1TB， 2TB， and 4TB predecessors. It is equipped with the new flagship controller， the SM2508， from Phison. This controller is manufactured on a 6nm process， promising high performance while maintaining low heat generation. To further aid in thermal dissipation， it incorporates a multi-layer graphene thin thermal pad.
For NAND flash， Bai Wei has opted for Micron’s 232-layer stacked TLC 3D NAND. A notable change is the transition from a single-sided design in previous capacities to a double-sided design for the 8TB model. This dual-sided arrangement means the drive may not be ideal for integration into slim devices like laptops or gaming consoles due to potential space constraints and heat management considerations.
The DRAM cache configuration continues with a 1000:1 ratio， bringing the total cache capacity to 8GB， which is standard for high-performance SSDs of this caliber.
The official specifications state a sequential read speed of 14GB/s and random read/write speeds of up to 2 million IOPS and 1.6 million IOPS， respectively. These performance metrics are consistent with the existing 2TB and 4TB models in the X570 PRO series. While the sequential write speed isn’t explicitly mentioned， it is anticipated to be slightly lower than the 13GB/s of the 2TB/4TB versions， but likely not a significant difference in practical terms.
When compared to offerings from competitors like the SanDisk WD_BLACK SN8100 8TB， the Bai Wei X570 PRO 8TB’s sequential read and write speeds (14GB/s and likely around 12-13GB/s) and random performance (2M/1.6M IOPS) are indeed lower than the WD_BLACK’s claimed 14.9GB/s， 13.2GB/s， 2.6 million IOPS， and 2.2 million IOPS respectively. However， for users prioritizing sheer storage capacity， these minor performance differences might be less critical.
The Bai Wei X570 PRO 8TB SSD is now available for purchase at a price of 5999 Yuan. This positions it at a premium， more than double the cost of the 4TB version priced at 2399 Yuan， reflecting the added value and complexity of doubling the storage density on a high-performance PCIe 5.0 interface.
