AMD Duron 1.8 GHz and more than 1 stick of DDR?

[metroplex]

Has anyone heard of an issie with AMD Duron 1.8 GHz CPUs and more than 1 stick of DDR?

I have an Abit KX7-333 with the Applebred Duron 1.8.
I have 3 sticks of DDR that worked fine with a Palamino XP2100+ (1.73 GHz). Two of them were 256MB PC2100 Crucial, one 512MB PC2700 PNY (running in PC2100).

When I swapped CPUs, it would no longer POST with the PNY RAM. I tried the PNY in another PC and while it would POST, booting to Win 98 SE would cause it to reboot by itself.

The Crucial sticks worked fine with the other PC, but if I use both sticks w/ the Duron 1.8, it would hang at the POST screen right after it checked the memory. Using 1 stick, the PC works fine.

Help!

 

[RadiclDreamer]

Never heard of an issue, but what are your voltages looking like? Maybe those extra sticks and extra power from the cpu are just enough to put your psu over the top

 

[DAPUNISHER]

Did you try increasing voltage and relaxing timings?

 

[metroplex]

The Duron 1.8 GHz is supposed to be a cooler running CPU than the XP2100+, but:
+5V was fluctuating between 4.97V and 5.05V
12V and other voltages were within norms
With the Xp2100+, my +5V is around 4.7V-4.86V (using the on-board readings).

Here's the weird thing: with the same RAM, my CPU default voltages show 2.55V with the RAM (Duron 1.8). With the XP2100+, the DDR default voltage is 2.65V

It just won't post with that PNY DDR... but my other PC, an Abit KG7-RAID has POST'd and successfully booted into W98 SE.

I used auto/SPD settings for the RAM timing and couldn't get it to run reliably. Once I tweaked it for max performance, the RAM worked fine. They are just regular PC2100 Crucial DDR sticks.

I'm going to try running the DDR at 2.75V with the extra sticks. 256MB is just not enough for XP.