Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
You can use Registered modules in your Mac Pro so you can do it for £300. You can also import from OWC for around £350. I realise neither are ideal, but then neither is paying twice the price. There is also a german store which people use which has good prices and I think an eBay seller that does too.
 
By registered do you mean Non-ECC? Do you reckon it's worth the risk. I think I would prefer to stick with ECC if I can afford it.

Thanks for the help though!

No I mean Registered ECC instead of Unbuffered ECC. It should be more expensive due to technology/features, but isn't due to demand. You can use non-ECC too, but that is usually more expensive than unbuffered ECC when it comes to 4GB DIMMs, for the same demand reasons. These should work without issue in your Mac Pro.

Plenty of people use OWC in the UK though for Mac Pro memory, your only real concern should be the return issues, but you will be getting memory certified for your Mac Pro.
 
No I mean Registered ECC instead of Unbuffered ECC. It should be more expensive due to technology/features, but isn't due to demand. You can use non-ECC too, but that is usually more expensive than unbuffered ECC when it comes to 4GB DIMMs, for the same demand reasons. These should work without issue in your Mac Pro.

Plenty of people use OWC in the UK though for Mac Pro memory, your only real concern should be the return issues, but you will be getting memory certified for your Mac Pro.

Thanks for the link. So, so far I could kit out my Mac Pro with 12GB for around £300.

I might start saving then
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.