eMachines T3265 - can't change memory speed

[Rewired]

Last year I purchased an eMachines T3265. It has an Athlon XP 3200+ with a 400Mhz FSB. The motherboard is an FIC AU31 with an nForce2 chipset. Given this configuration I assumed the memory was DDR 400 (PC3200). I purchased 1 GB (2x512MB) of PC3200 memory from NewEgg opened the case to install it and discovered that it had a single 512MB DDR 333 (PC2700) module. I removed the existing module and installed the two memory modules I purchased. According to the BIOS the memory is running at 333Mhz. I can't find anywhere where the memory speed can be changed. There is a jumper on the motherboard, but the documentation only shows 2 settings, one for 266 Mhz and one for 333 Mhz. I have run Sisoft Sandra and it confirms that the FSB for the processor is at 400 Mhz but the memory speed is 333 Mhz. Does anyone know a way around this so I can run the memory at full speed?

Thanks.

 

[ski]

From what I've read about that system, the fastest RAM it can use is DDR PC2700.

 

[Rewired]

Thanks Ski:

Do you know if any problems could emerge by using DDR PC3200 in the system running at only 333Mhz? Seems to me it should work fine. I may have to accept a performance hit with the memory running in asynchronous mode with the processor. Neither eMachines nor FIC have any BIOS downloads posted.

I have seen some info on this motherboard stating it to be capable of 400Mhz memory access speed. The board apparently goes by two different names: AU31 or K7M-NF18G.

 

[ski]

The system should run ok with the PC3200 installed.
But it will run at the slower 333 MHz speed.

Unfortunately, that MB has fixed speed parameters
when it's installed in an OEM system, and things cannot be tweaked either in BIOS or with jumpers.
There will be a slight hit when running the RAM at a different speed than the CPU, but it should not be that noticeable, and the overall performance should still be quite zippy.