QNAP TS-431+ - IS-453 S and TS-251 C CPU;Memory Details

16
System
IS-453S
CPU
Quad-core Intel
®
Atom™ 1.91GHz
Memory
IS-453S-2G: 2GB
DDR3L
IS-453S-8G: 8GB
DDR3L
Flash
512MB (USB DOM)
CPU replaceable
-
Memory
replaceable
✔ (Compatible with
DDR3L-1333/1600
SODIMM RAM)
Number of RAM
slots
2 (SODIMM)
Number of hard
drive slots
4 (2.5" only)
System
TS-251C
TS-251 /
TS-251-4G
CPU
Dual-core Intel
®
Celeron™ 2.41GHz
(up to 2.58GHz)
Dual-core Intel
®
Celeron™ 2.41GHz
(up to 2.58GHz)
Memory
1GB DDR3L
1GB / 4GB DDR3L
(Expandable RAM, up
to 8GB)
Flash
512MB
512MB
Memory
replaceable
-
✔ (Compatible with
DDR3L RAM)
Number of RAM
slots
-
2(SODIMM)
Number of hard
drive slots
2 (3.5” HDDs only)
2
IR sensor
✔ (QNAP remote
control: RM-IR002)
✔ (QNAP remote
control: RM-IR002)