Performance Comparisons – Client QD Weighted
These results attempt to simplify things by focusing on what really matters – the Queue Depths that folks actually see when using these products. A dimension is eliminated from the previous charts by applying a weighted average to those results. The weights were derived from trace recordings of moderate to heavy workloads, which still ended up running closer to QD=1-2 even on a slower SATA SSD. The intent here is to distill the results into something for those wanting 'just the facts' to grab and go when making their purchasing decisions. Don't be alarmed by the low figures. Remember, these are low queue depths – the place where these SSDs actually operate when in use by those not just running benchmarks all day!
Since client workloads lean heavily towards reads, keep a focus on the blue bars above. Surprisingly good figures turned in here by the 660p, which comes in closer to the Samsung 970 EVO than I was expecting. Clearly, Intel has paid more attention to low queue depths performance lately as the 660p and 760p do well in this important metric.
Sequentials are not stellar but remain in the middle of the pack.
This % read sweep chart shows the random QD weighted results between full reads and full writes. We look for a smooth curve here and all SSDs behave as expected with no real surprises.