I've worked with the P3V4X which is pretty similar to the CUV4X (Slot1, 1 extra DIMM, no onboard ATA100) and it's worked out very well for me. A guy had a prebuilt system from Comcraq or whatever...and I used a P3V4X to standardize it, he had a 550 and 128MB of RAM, he had a TNT2 - it was a pretty decent for a big OEM - it had a POS custom case, mobo and PSU and the power power supply died...so rather than trying to replace or repair I got a standard case and PSU and put it all on a P3V4X, in the few days I was testing it it worked out quite well, and he's not given me any complaints. Except for the P3 this was all pretty generic crap (I coudln't figure out the brand name on the TNT2 and the RAM ..well lets not go there..) and it all seemed to work well together.