grimreaper1014, Swiftech released
in an email copied to Martinm210's comments that the H220 pump should have similar specs to their 35b pump, which is a 350 with top. Granted that is a manufacturer spec but Swiftech has been fairly accurate with their other pumps and that is all I have, so...
From
Martinm210's site, the 35b or 350 with top has a PSI of 4.39 at 1 gpm, which is a good flow rate.
Martin then has a
pump guide to help answer your question.
In a nutshell, after reading the stickies, you will want to look for low resistance components. Martin's site or Skinnee Labs often will perform a pressure drop but unfortunately we do not have this for all components.
Will be happy to answer questions except I have no idea whether the price / cooling ratio is better one or the other. It seems to me that if you wanted some cool-looking blocks that were restrictive, you could always add a second pump in series...but that's just my opinion. My reason to post was to share the head pressure email information from Swiftech on the H220 pump. Good luck.
add: OP, sorry I did not see your 10:09 post. The stickies refer us mostly to
Skinnee Labs or Martin's site linked above. Bundymania is another tester not quite as informative as the prior testers but he has an
AMD 7970 roundup here. In 2012
Stren released a large test of CPU blocks posted at XS. I need to type faster.