General discussion

Locked

pc133 sdram? 64x64 vs 64x4 (168 pin)

By fred07 ·
what is the problem difference on mb's and WHY the problem difference??? On asus,fic,alton,via or any I have tried, the mb will not accept the ram. This makes me leary of buying any ram I cannot see in person. THANK YOU. fred

This conversation is currently closed to new comments.

11 total posts (Page 1 of 2)   01 | 02   Next
| Thread display: Collapse - | Expand +

All Comments

Collapse -

pc133 sdram? 64x64 vs 64x4 (168 pin)

by timwalsh In reply to pc133 sdram? 64x64 vs 64x ...

"Will not accept the ram" can have two possible meanings: it won't fit, or the BIOS doesn't recognize it. Which of these is your problem?

When buying RAM you must make sure of 2 things: it is the correct form factor that will work on your motherboard, and it meets the required specifications as far as clock spped and type.

Form factor: Currently available RAM for desktops comes in several formats: 72-pin SIMMs, 168-pin SDRAM DIMMs, 184-pin DDR DIMMs, and 184-pin Rambus RDRAM DIMMs. They are not interchangeable. The 168-pin SDRAMs and 184-pin DIMMs can be mistaken for each other if not checked closely. Also the direction the SIMM/DIMM is placed in the motherboard is not interchangeable (it will only fit one way).

Type: Withineach form factor you can find several types: ECC and non-ECC, buffered and unbuffered, registered and unregistered. These also are not usually interchangeable.

The bottom line here is that you ust order RAM that meets the specifications put forth in your motherboard's documentation.

Back to your question: if by "the mb will not accept the ram" you mean it won't fit, it is either the wrong form factor or you are trying to install it the wrong way. If you mean it will fit, but isn't recognized by the BIOS, either it is the wrong type, or it is either a victim of Electrostatic discharge (it got zapped by static) or there was still power applied to the motherboard when you tried to install it.

Hope this helps.

Collapse -

pc133 sdram? 64x64 vs 64x4 (168 pin)

by fred07 In reply to pc133 sdram? 64x64 vs 64x ...

Poster rated this answer

Collapse -

pc133 sdram? 64x64 vs 64x4 (168 pin)

by TheChas In reply to pc133 sdram? 64x64 vs 64x ...

Fred, it is an unfortunate reality that the standard for SDRAM DIMMs is a 'non-standard'.

There are at least 3 different styles of SDRAM DIMMs.

Single Density
Double Density
Quad Density

There are also a few iterations of single density. Some have 2 clock lines, others have 4.

Anyhow, only the newest motherboard designs will accept the new quad density DIMMs.

Options to assure that you get 'compatible' memory:

Use the major manufactures
Crucial
Kingston
PNY

Kingston has an FAQ on memory compatibility.

Verify that you are purchasing double density RAM.
It will be more expensive than the new quad density, but it will function in your motherboard.

Work with a local dealer.
Many will install RAM for free, and swap RAM until compatible RAM is found.

As a side note, there is a bug in Windows 9X and Me that can cause problems if you have more than 511MB of RAM installed.
This bug is VERY configuration dependant.

Chas

Collapse -

pc133 sdram? 64x64 vs 64x4 (168 pin)

by TheChas In reply to pc133 sdram? 64x64 vs 64x ...

Fred, can you give us a manufacture and model number on the RAM that does not work?

Also, a few of the model numbers for the motherboards would help fill in details as to why the dutch RAM is a problem.

Chas

Collapse -

pc133 sdram? 64x64 vs 64x4 (168 pin)

by fred07 In reply to pc133 sdram? 64x64 vs 64x ...

Poster rated this answer

Collapse -

pc133 sdram? 64x64 vs 64x4 (168 pin)

by fred07 In reply to pc133 sdram? 64x64 vs 64x ...

first answer a little help and second answer more help. I am the installer in my area and needed to know the difference for myself. The dutch 64x4 is not reccognised in bios of the 8 new mb's I have tried to install in. They are sdram dimm at 168 pin. More than one has been tried in each board. the 64x64 workes fine. I can see the difference in them on sight. The low density [old style] is also easy to spot. I live way out in the country and do not have easy avilability for my customers. fred

Collapse -

pc133 sdram? 64x64 vs 64x4 (168 pin)

by fred07 In reply to pc133 sdram? 64x64 vs 64x ...

Poster rated this answer

Collapse -

pc133 sdram? 64x64 vs 64x4 (168 pin)

by fred07 In reply to pc133 sdram? 64x64 vs 64x ...

Damn tech makes me retype everything. Here goes:
Chip maker PCI, 64x4A3VFB,GO4SFBO,0233. All the chips have same. one has also AC09300202. Hope you can answer this. does 4x mean 4 times denser,
2x mean double density and 1 is old style or am I out of the ball park. fred

Collapse -

pc133 sdram? 64x64 vs 64x4 (168 pin)

by fred07 In reply to pc133 sdram? 64x64 vs 64x ...

hope chas reads my additions. Thank you

Collapse -

pc133 sdram? 64x64 vs 64x4 (168 pin)

by fred07 In reply to pc133 sdram? 64x64 vs 64x ...

Poster rated this answer

Back to Hardware Forum
11 total posts (Page 1 of 2)   01 | 02   Next

Related Discussions

Related Forums