RAM for MP 5,1

Hi folks,

I'd really appreciate if you could tell me the below specd' RAM is gonna work with MP 5.1

SAMSUNG 8GB PC3L-10600R DDR3-1333 REGISTERED 2RX4 CL9 240 PIN 1.35V
MANUFACTURER: SAMSUNG
PART NUMBER: M393B1K70CHD-YH9
COMPONENT DENSITY: 8GB
PRODUCT BUS TYPE: PC3L-10600R
COMPONENT SPEED: DDR3-1333
REGISTERED / UNBUFFERED: REGISTERED
ERROR CORRECTION CODE ( ECC ): YES
COMPONENT RANK: 2RX4
CAS LATENCY: CL9
PIN COUNT: 240-PIN
VOLTAGE: 1.35V

Will this work with existing 2 Gig DIMMs or do I have have matching pair?