Haha, Just did the check on the old dim and that passes fine.
Did the Crucial scan and it says I should get http://uk.crucial.com/gbr/en/ideapad-z560/CT5305777
So the IBM website tells lies.
IBM says
Features and specifications
Lenovo 1GB, 2GB and 4GB DDR3 1333 SODIMM memories offer maximum data transfer rates up to 10600MB/sec to help you increased performance of memory intensive applications such as streaming video, graphics and CAD programs. Adding more system memory is one of the least expensive ways to help boost overall notebook system performance and allows more multitasking which saves time and hassle. Data transfer rates vary and are often less than the maximum possible.
Features and benefits include:
Choice of available Lenovo 1GB, 2GB and 4GB DDR3 1333 SODIMM memories:
Lenovo 1GB DDR3 1333 SODIMM memory (78Y7383)
Lenovo 1GB DDR3 1333 SODIMM memory - Japan (78Y7384)
Lenovo 2GB DDR3 1333 SODIMM memory (78Y7392)
Lenovo 4GB DDR3 1333 SODIMM memory (78Y7385)
Lenovo 4GB DDR3 1333 SODIMM memory - Japan (78Y7386)
Lower 1.5V power consumption, compared to older 1.8V DDR2 memory, extends battery life
Improved system-level thermal management that further reduces power drain
Test-proven 100% compatibility listed for supported systems
CAS Latency: 9
Capacity: 1 GB / 2 GB / 4GB
Form Factor: SODIMM
Memory speed: 1333Mbps (667MHz)
Number of Pins: 204
Parity: Non-Parity
Pin Alloy: Cu/Ni/Au
RAM type: DDR3 SDRAM
Crucial says
8GB Kit (4GBx2) DDR3 PC3-12800 Unbuffered NON-ECC 1.35V
product information
Product Specifications
Brand - Crucial
Form Factor - SODIMM
Capacity - 8GB Kit (4GBx2)
Warranty - Limited Lifetime
Specs - DDR3 PC3-12800 • CL=11 • Unbuffered • NON-ECC • DDR3-1600 • 1.35V •
Series - Crucial
ECC - NON-ECC
Kit Qty - 2
Speed - 1600 MT/S
Tracer - False
Voltage - 1.35V
DIMM Type - Unbuffered
Did the Crucial scan and it says I should get http://uk.crucial.com/gbr/en/ideapad-z560/CT5305777
So the IBM website tells lies.
IBM says
Features and specifications
Lenovo 1GB, 2GB and 4GB DDR3 1333 SODIMM memories offer maximum data transfer rates up to 10600MB/sec to help you increased performance of memory intensive applications such as streaming video, graphics and CAD programs. Adding more system memory is one of the least expensive ways to help boost overall notebook system performance and allows more multitasking which saves time and hassle. Data transfer rates vary and are often less than the maximum possible.
Features and benefits include:
Choice of available Lenovo 1GB, 2GB and 4GB DDR3 1333 SODIMM memories:
Lenovo 1GB DDR3 1333 SODIMM memory (78Y7383)
Lenovo 1GB DDR3 1333 SODIMM memory - Japan (78Y7384)
Lenovo 2GB DDR3 1333 SODIMM memory (78Y7392)
Lenovo 4GB DDR3 1333 SODIMM memory (78Y7385)
Lenovo 4GB DDR3 1333 SODIMM memory - Japan (78Y7386)
Lower 1.5V power consumption, compared to older 1.8V DDR2 memory, extends battery life
Improved system-level thermal management that further reduces power drain
Test-proven 100% compatibility listed for supported systems
CAS Latency: 9
Capacity: 1 GB / 2 GB / 4GB
Form Factor: SODIMM
Memory speed: 1333Mbps (667MHz)
Number of Pins: 204
Parity: Non-Parity
Pin Alloy: Cu/Ni/Au
RAM type: DDR3 SDRAM
Crucial says
8GB Kit (4GBx2) DDR3 PC3-12800 Unbuffered NON-ECC 1.35V
product information
Product Specifications
Brand - Crucial
Form Factor - SODIMM
Capacity - 8GB Kit (4GBx2)
Warranty - Limited Lifetime
Specs - DDR3 PC3-12800 • CL=11 • Unbuffered • NON-ECC • DDR3-1600 • 1.35V •
Series - Crucial
ECC - NON-ECC
Kit Qty - 2
Speed - 1600 MT/S
Tracer - False
Voltage - 1.35V
DIMM Type - Unbuffered