Pic of heat damaged PC100 / PC133 RAM. What new RAM to get?

[Eug]

OK, it seems that the heat in my SFF Cube was too much for one of my sticks of RAM. Pics:

Imprint of heat damage visible on chip surfaces

I still have 768 MB RAM (512 + 256) in the thing, but I want another 512 MB, for a total of 1.25 GB. Do I have to worry about RAM density? Or is all 512 MB PC133 RAM high density by default anyway? (I remember it was an issue with 256 MB modules for BX motherboards.)

P.S. The bus speed is 100 MHz, but I'm using PC125 and PC133 in the thing right now.

 

[Eug]

OK, this is what it is compatible with:

"PC-100 SDRAM (35 mm, 3.3 V, unbuffered, 64-bit-wide, 168-pin, running at 100 MHz)"

"Incompatible DIMMs may also be identified as having 32Mx4 chips (for a 256MB DIMM) or 64Mx4 chips (for a 512MB DIMM)."

So, this should work right?

512 MB
Bus Clock: PC133 (133MHz)
Pins: 168 Pin, Gold Leads
Memory Type: DIMM (Dual In-line Memory Module) Type
Module Type: SDRAM (Synchronous Dynamic Random Access Memory)
Data Integrity Check: Non-ECC, Unbuffered
Supply Voltage: 3.3 Volts
Chip Configuration: 64 x 64 (32 x 8)
Speed: 7.0 ns, CL3 (CAS Latency)

This Kingston Value RAM KVR133X64C3/512 PC133 too?

Kingston Value RAM identifier

 

[myocardia]

It should work fine, as long as the timings are the same, since all 512MB sticks of SDRAM are high density. Any time you mix RAM with different timings, all of your RAM runs at the slowest timings, of whatever you have installed. What motherboard is this, BTW?

 

[Eug]

Originally posted by: myocardia
It should work fine, as long as the timings are the same, since all 512MB sticks of SDRAM are high density. Any time you mix RAM with different timings, all of your RAM runs at the slowest timings, of whatever you have installed. What motherboard is this, BTW?

Thx.

The timings shouldn't be an issue, because it's a old Mac with only a 100 MHz bus.

I think the slowest RAM I can possibly find would be 8 ns PC100 2-2-2 anyway. I betcha most of it will be 7.5 or even 7 ns though.

I found something later that said 64x4 chips won't work though. I guess I'll just have to be careful and check the specs then.