허용되는 최대 RAM을 어떻게 알 수 있나요?

저는 오래된 HP 530 노트북을 발견했고 이를 SSD와 새 RAM으로 업그레이드하여 동생에게 학교 과제를 완료하도록 줄 계획입니다.

시스템 사양을 이해하기 위해 dmidecode 명령을 실행했고 다음과 같은 결과를 얻었습니다.

Handle 0x000A, DMI type 16, 15 bytes
Physical Memory Array
    Location: System Board Or Motherboard
    Use: System Memory
    Error Correction Type: None
    Maximum Capacity: 4 GB
    Error Information Handle: No Error
    Number Of Devices: 2

Handle 0x000B, DMI type 17, 27 bytes
Memory Device
    Array Handle: 0x000A
    Error Information Handle: No Error
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: SODIMM
    Set: None
    Locator: DIMM #1
    Bank Locator: Not Specified
    Type: DDR2
    Type Detail: Synchronous
    Speed: 975 MT/s
    Manufacturer: 7F7FFE0000000000
    Serial Number: 5CB5368D
    Asset Tag: Not Specified
    Part Number: EBE10UE8AFSA-8G-F 

Handle 0x000C, DMI type 17, 27 bytes
Memory Device
    Array Handle: 0x000A
    Error Information Handle: No Error
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: SODIMM
    Set: None
    Locator: DIMM #2
    Bank Locator: Not Specified
    Type: DDR2
    Type Detail: Synchronous
    Speed: 667 MT/s
    Manufacturer: CE00000000000000
    Serial Number: F405601E
    Asset Tag: Not Specified
    Part Number: M4 70T2953CZ3-CE6 

Handle 0x000D, DMI type 19, 15 bytes
Memory Array Mapped Address
    Starting Address: 0x00000000000
    Ending Address: 0x0007FFFFFFF
    Range Size: 2 GB
    Physical Array Handle: 0x000A
    Partition Width: 2

Handle 0x000E, DMI type 20, 19 bytes
Memory Device Mapped Address
    Starting Address: 0x00000000000
    Ending Address: 0x0003FFFFFFF
    Range Size: 1 GB
    Physical Device Handle: 0x000B
    Memory Array Ma    Handle 0x000A, DMI type 16, 15 bytes
Physical Memory Array
    Location: System Board Or Motherboard
    Use: System Memory
    Error Correction Type: None
    Maximum Capacity: 4 GB
    Error Information Handle: No Error
    Number Of Devices: 2

Handle 0x000B, DMI type 17, 27 bytes
Memory Device
    Array Handle: 0x000A
    Error Information Handle: No Error
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: SODIMM
    Set: None
    Locator: DIMM #1
    Bank Locator: Not Specified
    Type: DDR2
    Type Detail: Synchronous
    Speed: 975 MT/s
    Manufacturer: 7F7FFE0000000000
    Serial Number: 5CB5368D
    Asset Tag: Not Specified
    Part Number: EBE10UE8AFSA-8G-F 

Handle 0x000C, DMI type 17, 27 bytes
Memory Device
    Array Handle: 0x000A
    Error Information Handle: No Error
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: SODIMM
    Set: None
    Locator: DIMM #2
    Bank Locator: Not Specified
    Type: DDR2
    Type Detail: Synchronous
    Speed: 667 MT/s
    Manufacturer: CE00000000000000
    Serial Number: F405601E
    Asset Tag: Not Specified
    Part Number: M4 70T2953CZ3-CE6 

Handle 0x000D, DMI type 19, 15 bytes
Memory Array Mapped Address
    Starting Address: 0x00000000000
    Ending Address: 0x0007FFFFFFF
    Range Size: 2 GB
    Physical Array Handle: 0x000A
    Partition Width: 2

Handle 0x000E, DMI type 20, 19 bytes
Memory Device Mapped Address
    Starting Address: 0x00000000000
    Ending Address: 0x0003FFFFFFF
    Range Size: 1 GB
    Physical Device Handle: 0x000B
    Memory Array Mapped Address Handle: 0x000D
    Partition Row Position: 1

Handle 0x000F, DMI type 20, 19 bytes
Memory Device Mapped Address
    Starting Address: 0x00040000000
    Ending Address: 0x0007FFFFFFF
    Range Size: 1 GB
    Physical Device Handle: 0x000C
    Memory Array Mapped Address Handle: 0x000D
    Partition Row Position: 2pped Address Handle: 0x000D
    Partition Row Position: 1

Handle 0x000F, DMI type 20, 19 bytes
Memory Device Mapped Address
    Starting Address: 0x00040000000
    Ending Address: 0x0007FFFFFFF
    Range Size: 1 GB
    Physical Device Handle: 0x000C
    Memory Array Mapped Address Handle: 0x000D
    Partition Row Position: 2

제가 아는 바로는 RAM 메모리의 최대 용량은 4GB인데, 4GB 스틱 1개를 구입해야 할지, 2GB 스틱 2개를 구입해야 할지 잘 모르겠습니다. 어떤 유형의 메모리를 구입해야 합니까(DDR2?)?

누구든지 나를 도와줄 수 있나요?

다들 감사 해요:)