I settled on a 1Gb dual channel set of Mushkin XP3200 (PC3200) 2-2-2 Redline Xtreme Performance from a Irish online shop, about £30 cheaper than any UK retailer that I could find.
The joys of odrering via the internet when all goes wrong After a week of waiting I contacted the retailer to see where the memory was, "Oh its out of stock with no date for a new delivery" I get told.
OK so I order some Patroit PC4200, 3 days later the memory arrives, I open it up and guess what, they've sent PC3200
I contact them again and they say "Oh when we quoted you for the Memory we didn't notice the change to PC4200, send it back we will pay you for the postage and not charge you for the price increase between PC3200 and PC4200 ".
Hopefully on Tuesday I will receive the memory, and be able to play with my Opteron 144