PQI has released the Phoenix Series ~ Turbo Immortality Edition DDR3-1600 4GB dual channel kit, with a tested operating frequency of 1688MHz at 1.54V. I wonder if those memories aren’t too high for my case

Product specifications:
Chip: Elpida 128*8 with 70nm process
Working voltage: 1.54V
Latency: 8-8-8-24
Maximum working frequency: 1688 MHz (@1.54V)
Dimension: 133.35 x 30 x 4 mm
Platform Chipset: X38