zdravím.. chci se zeptat, mám od výroby v notebooku (lenovo y580) volný slot na jednu rozsirujici ramku.. chci se zeptat, nekde sem cetl, ze musi byt uplne totozna s tou, ktera uz tam je, tak jestli je to pravda.. nebo musi mit jen stejnou frekvenci... ci stejny timing na ruznych frekvencich apod.. par kousku jsem si v ceskych eshopech nasel, ale vsechny nebyly uplne stejne a nezdalo se mi, ze by byly primo kompatibilni..

zde jsou informace o moji ramce, ktera tam je:

General Module Information
Module Number: 2
Module Size: 4096 MBytes
Memory Type: DDR3 SDRAM
Module Type: SO-DIMM
Memory Speed: 800.0 MHz (PC3-12800)
Module Manufacturer: Samsung
Module Part Number: M471B5273DH0-CK0
Module Revision: 0
Module Serial Number: hidden
Module Manufacturing Date: Year: 2012, Week: 29
Module Manufacturing Location: 3
SDRAM Manufacturer: Samsung
Error Check/Correction: None

Module characteristics
Row Address Bits: 15
Column Address Bits: 10
Number Of Banks: 8
Module Density: 2048 Mb
Number Of Ranks: 2
Device Width: 8 bits
Bus Width: 64 bits
Module Nominal Voltage (VDD): 1.5 V

Module timing
Minimum SDRAM Cycle Time (tCKmin): 1.250 ns
CAS# Latencies Supported: 5, 6, 7, 8, 9, 10, 11
Minimum CAS# Latency Time (tAAmin): 13.125 ns
Minimum RAS# to CAS# Delay (tRCDmin): 13.125 ns
Minimum Row Precharge Time (tRPmin): 13.125 ns
Minimum Active to Precharge Time (tRASmin): 35.000 ns

Supported Module Timing at 800.0 MHz: 11-11-11-28
Supported Module Timing at 666.7 MHz: 9-9-9-24
Supported Module Timing at 533.3 MHz: 7-7-7-19
Supported Module Timing at 400.0 MHz: 6-6-6-14
Supported Module Timing at 333.3 MHz: