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Honor Student
Posts: 3
Member Since: ‎02-11-2014
Message 1 of 3 (2,659 Views)

Compaq 500b Memory and CPU compatibility issue (renewal)

Hello

 

It's renew for This Topic

 

I have a similar problem.

We have 5 computers Compaq 500b.

In two of them, we install CPU INTEL Core 2 Quad Q9300 with 1333, and they worked fine.

Then we set memory CORSAIR DDR3-2x2Gb, 1333 and do not start with black screen and RAM Error beep code (1 short, 1 Long, 3 second pause).

Memory spec:

CORSAIR CMV4GX3M2A1333C9 DDR3-2x 2GB, 1333, DIMM, Ret

DDR3

2 × 2048 MB

PC3-10600

unbuffered

non ECC

9-9-9-24 / CL9

 

Memory spec by SPD from CPUZ is 9-9-9-24 on bus 666MHz

 

Works normally:

Intel Core 2 Quad work normally on Compaq 500b at 1333MHz Bus and old memory (HP Samsung) at 1066 (PC-8500)

Memory CORSAIR DDR3-2x2Gb tested on another computer, it work normally at 1333 (PC-10660).

Memory CORSAIR DDR3-2x2Gb work normally on Compaq 500b with the Intel Celeron E3200 at 800MHz Bus and memory at 800 PC-6400

 

Compaq 500b with Lastest Bios version.

CPU:

Intel Celeron E3200 Wolfdale (2400MHz, LGA775, L2 1024Kb, 800MHz)

Intel Core 2 Quad Q9300 Yorkfield (2500MHz, LGA775, L2 6144Kb, 1333MHz)

Memory:

HP Samsung DDR3 1 x 2GB, 1066, DIMM

HP Samsung DDR3 2 x 1GB, 1333, DIMM

CORSAIR DDR3 2 x 2GB, 1333, DIMM

 

Why this memory will not run at Compaq 500b with once or dual whith Intel Core 2 Quad?

0 Kudos
Honor Student
Posts: 3
Member Since: ‎02-11-2014
Message 2 of 3 (2,608 Views)

Re: Compaq 500b Memory and CPU compatibility issue (renewal)

[ Edited ]

I happened to pick up memory.

This old 16chips Hunix and NPC.

Both DIMM memory marked as 10600 SPD 9-9-9-24 (on 1033) and only as 8500 (on 1066).

This clinical pattern is repeated on all computers Compaq 500B.

I think Mother Board foxconn 2a8ch not support real 1033mhz memory bus.

 

Can i use HP 500b bios on Compaq 500B?

(Lastest Bios for Compaq and For HP 500b:

HP Compaq Business Desktop ROMPaq Firmware (ROM Family CPT006) 5.13 Rev. A 16 Apr 2010

HP Compaq Business Desktop ROMPaq Firmware (ROM Family CPT006) 6.05 Rev. A 12 Jan 2011)

Can solve memory speed problem  lastest Bios?

sxi Top Student
Top Student
Posts: 6
Member Since: ‎05-10-2014
Message 3 of 3 (2,416 Views)

Re: Compaq 500b Memory and CPU compatibility issue (renewal)

The 500B does not document its dependances on single and double sided memory.  I have several 500B system and came to learn that those with E8600 CPUs would only accept 2 GB modules that are double sided (you'll see this referenced as 2Rx8 (double) vs 1Rx8).  Then with other CPUs, it may accept single sided.

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