bingo nói:
RAM laptop sử dụng thường là các loại SODIMM
1) SDRAM, PC100/ PC133 144pin-SODIMM
2) DDR, PC2700(DDR333)/ PC3200(DDR400) 200pin-SODIMM
3) DDR2, PC2-3200(DDR2-400)/ PC2-4300(DDR2-533)/ PC2-5300(DDR2-667) 200pin SODIMM
Bác cho em hỏi phát. Em dùng laptop Compaq Presario 2253AP, CPU Celeron M1.4 GHz, bus 400 MHz, main chipset i855GM. Em xem trang chủ Intel thì nó nói là chipset i855GM hỗ trợ ram DDR SDRAM pc2700(BUS 256MHz). Em mua 2 thanh: 1 DDR SDRAM pc2700(BUS 333)-512MB và 01 DDR SDRAM pc2700(BUS 333)-256MB. Có 2 khe cắm ram
Xong dùng AIDA để xem lại thì cả 2 ram đề chỉ có thông số là PC2700(166MHz)
Sao thể nhỉ, em phân vân quá
----------------------------------------------------------------------
Memory Module Properties
Module Name Samsung M4 70L3224FT0-CB3
Serial Number F3087EB1h
Manufacture Date Week 51 / 2004
Module Size 256 MB (2 rows, 4 banks)
Module Type Unbuffered
Memory Type DDR SDRAM
Memory Speed PC2700 (166 MHz)
Module Width 64 bit
Module Voltage SSTL 2.5
Error Detection Method None
Refresh Rate Reduced (7.8 us), Self-Refresh
Highest CAS Latency 2.5 (6.0 ns @ 166 MHz)
2nd Highest CAS Latency 2.0 (7.5 ns @ 133 MHz)
Memory Module Features
Early RAS# Precharge Not Supported
Auto-Precharge Not Supported
Precharge All Not Supported
Write1/Read Burst Not Supported
Buffered Address/Control Inputs Not Supported
Registered Address/Control Inputs Not Supported
On-Card PLL (Clock) Not Supported
Buffered DQMB Inputs Not Supported
Registered DQMB Inputs Not Supported
Differential Clock Input Supported
Redundant Row Address Not Supported
Memory Module Manufacturer
Company Name Samsung
Product Information
http://www.samsung.com/Products/Semiconductor/DRAM/index.htm
++++++++++++
Memory Module Properties
Module Name RM12P361TA-27BL
Serial Number None
Module Size 512 MB (2 rows, 4 banks)
Module Type Unbuffered
Memory Type DDR SDRAM
Memory Speed PC2700 (166 MHz)
Module Width 64 bit
Module Voltage SSTL 2.5
Error Detection Method None
Refresh Rate Reduced (7.8 us), Self-Refresh
Highest CAS Latency 2.5 (6.0 ns @ 166 MHz)
Memory Module Features
Early RAS# Precharge Not Supported
Auto-Precharge Not Supported
Precharge All Not Supported
Write1/Read Burst Not Supported
Buffered Address/Control Inputs Not Supported
Registered Address/Control Inputs Not Supported
On-Card PLL (Clock) Not Supported
Buffered DQMB Inputs Not Supported
Registered DQMB Inputs Not Supported
Differential Clock Input Supported
Redundant Row Address Not Supported

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