Synthetic Performance Testing
The sole comparison product to the Samsung 983 ZET comes from its most obvious competitor, the Intel SSD DC P4800X Optane SSD. The DC P4800X differs slightly from the consumer 900P/905P. The datacenter Optane drives support System Management Bus (SMBus), a feature disabled on the consumer drives.
Sequential Read Performance
The two Samsung 983 ZET SDDs deliver stronger sequential read performance at most queue depths compared to the Intel Optane SSD. The Optane drive does take a slight lead at queue depth (QD) 2 but trails the ZET drives in other queue depths.
Sequential Write Performance
ZNAND is still flash technology so the write performance drops off under steady-state conditions. Optane uses 3D XPoint, a phase change technology, and doesn't suffer from steady-state performance roll-off.
The ZET SSDs still outperform other flash-based data center SSDs we've tested in sequential writes in steady-state but trails the DC P4800X.
Sequential Mixed Workload Performance
The mixed workload tests show the two series much closer in performance. These are closer to real-world sequential workload conditions for these products, but most companies deploy these products for random workloads.
Random Read Performance
Optane memory shows stronger random read performance at queue depths 1 to 16 but peak random read performance shows both technologies on par with each other. Our enterprise server doesn't reach the full 750,000 random read IOPS claimed by Samsung for this series, but we have seen performance as high as 650,000 IOPS with the latest Memblaze enterprise SSD using a PCIe 3.0 x8 interface.
Random Write Performance
The largest performance difference between the ZET and Optane series products come in the random data write category. This is also one of the few tests where the 480GB 983 ZET trails the larger 960GB model. Both Z-NAND SSDs trail Optane technology products in random writes by large margin at high queue depths.
Random Mixed Workload Performance
The strong random write performance is too much to overcome in random mixed workloads. The 983 ZET SSDs show strong performance, but will not be able to close the performance gap with any amount of data writes in the workload.
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