Will 800 Mhz work instead of 400 Mhz ?

[Magnum]

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

[sinsi]

Generally, DDR is 400 whereas DDR2 is 800. Different layout, so DDR2 won't fit into a DDR slot.

[Magnum]

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)

[sinsi]

Internal speed versus bus speed.

[Magnum]

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