Please help me solve this memory riddle...

[Hulk]

I got my brother a 128MB stick of Crucial PC133 Cas2 for Christmas. He wanted to upgrade his K6-2 to 256MB from 128MB. The 128MB stick he has in there now is one of those Kingston's from buy.com. His motherboard is an Epox, I don't remember exactly which one.

Anyway, when he runs both sticks of memory everything works fine except for one of his stock trading programs which eventually slows to a halt. It streams quotes from his cable internet connection.

The computer runs fine on just the 128MB Kingston.
It doens't run fine with both the Kingston and the Crucial (256MB total) OR just the Crucial 128MB stick by itself.

The reason I got him the PC133 Crucial is because he's going to eventually upgrade to a 133MHz bus system.

I thought that you could mix memory as long as the fsb speed was not running too fast for the slowest memory module?

Does anyone know what is going on here?

BTW, the Crucial stick is running fine in my computer right now.

 

[TravisBickle]

Well, it sounds like a software problem.
Have you tried conservativeswapfileusage=1 that they've all been talking about? Maybe Windows isn't handling memory right here. Just a thought.

 

[Xanathar]

Sounds more like the K6-2 doesnt have enough cache to handle the memory. Socket 7 based CPUs are limited to the amount of memory they can effeiently use by how much cache is on the motherboard.

 

[Fardringle]

If the system doesn't work properly with the Crucial stick in there by itself, then the amount of memory isn't the problem. Rather, it's possible that you simply got a bad stick of RAM and may need to exchange it. Before going through the hassle of doing that, is there another computer (yours perhaps) that you can use to test the Crucial RAM in first, just to see if it may be a problem with using Crucial on his motherboard...?