I have an H.P. 6730b laptop that has the 400 Mhz memory chips.
I can't find any 400 Mhz memory for it.
Will 800 Mhz chips work in it ?
PC2-6400 (DDR2-800)
Andy
Generally, DDR is 400 whereas DDR2 is 800. Different layout, so DDR2 won't fit into a DDR slot.
Am I misreading the speed as 400 Mhz ?
I don't understand the "400 X 2". If it is 800 Mhz, why don't they just say it. :t
Andy
Property Value
21-7 (Hewlett-Packard HP Compaq 6730b (KS178UT#ABA))
Memory Summary Wrong values reported by BIOS
Memory Type DDR2
Installed Memory 3072 MBytes
Available Memory 3001 MBytes
Channels Dual
Maximum Capacity 8192 MBytes
Maximum Memory Module Size [unknown]
Memory Slots 2
Error Correction None
Memory Timings
DRAM Frequency 398.9 MHz
CAS# Latency (CL) 6.0
RAS# to CAS# Delay (tRCD) 6
RAS# Prechange (tRP) 6
Cycle Time (tRAS) 18
Command Rate [unknown]
Device Locator Slot 1
Memory Type DDR2 [PC2-6400]
Manufacturer Elpida
Model EBE21UE8ACUA-8G-E
Serial Number 5A11E397
Capacity 2048 MBytes
Speed 400 MHz (400 x 2 = 800)
Manufacturing Date 2009, Week 14
EPP SPD Support No
XMP SPD Support No
Supported Frequencies 266 MHz, 333 MHz, 400 MHz
Memory Timings
JEDEC #1 4.0-4-4-12-16 at 266 MHz, at 1.8 Volts (CL-RCD-RP-RAS-RC)
JEDEC #2 5.0-5-5-15-20 at 333 MHz, at 1.8 Volts (CL-RCD-RP-RAS-RC)
JEDEC #3 6.0-6-6-18-24 at 400 MHz, at 1.8 Volts (CL-RCD-RP-RAS-RC)
Device Locator Slot 2
Memory Type DDR2 [PC2-6400]
Manufacturer Samsung
Model M4 70T2864QZ3-CF7
Serial Number 76A9B3B2
Capacity 1024 MBytes
Speed 400 MHz (400 x 2 = 800)
Manufacturing Date 2009, Week 19
EPP SPD Support No
XMP SPD Support No
Supported Frequencies 266 MHz, 333 MHz, 400 MHz
Memory Timings
JEDEC #1 4.0-4-4-12-16 at 266 MHz, at 1.8 Volts (CL-RCD-RP-RAS-RC)
JEDEC #2 5.0-5-5-15-20 at 333 MHz, at 1.8 Volts (CL-RCD-RP-RAS-RC)
JEDEC #3 6.0-6-6-18-24 at 400 MHz, at 1.8 Volts (CL-RCD-RP-RAS-RC)
Internal speed versus bus speed.
Sinsi,
System Information for Windows reported some wrong information for my RAM.
I found Astra32 which is more accurate and up to date.
My memory is 800 Mhz.
Andy