Xspc rasa 450 rx 120 vs corsair H80

The H80 is enough for get the 5GHz with good temps, but the ~4.8GHz are more commune.

I'd go with a 240 rad to allow headroom but as Saint said, the 120's will cover it
Moto

I would go with the 240 rad but one of my cases does not support it, its a cm storm scout. So I have to go with a 120 rad, do you think the rasa kit is worth the trouble setting up and more money, if there is even a performance gain over an h80?

If you're just having the 120 then I'd say go for the h80, easier install
but if you plan on ever expanding the loop then the rasa kit will allow for that
(Plus you know my opinions on 'won't fit' hehe, make it fit!)
You could mount it on top of the rails.....
Moto

Or "fit it" out side  

Thats what I meant saint, the rails are like carry handles  
bolt through them into the rad, sorted
Moto

Sorry Moto, I saw your thread after post mine.  

Wait can you guys show me a diagram?

Of mounting it on top of the rails?
I can draw/ try to draw something in the am when I get home yes
Moto

real water cooling loops are ALWAYS better than pre-fab lcs systems

Sorry for not replying back in a few days, (i was banned lol) but I need to choose between 3 radiators roughly around the same price. The xspc rasa 450rx 120, the thermal take bigwater 760 plus http://www.performance-pcs.com/catalog/index.php?main_p... and the swiftech h20 220 compact http://www.performance-pcs.com/catalog/index.php?main_p...

I'd say the swifty if thats the choices, mostly because that pumps just better than xspc's,
Don't buy the bilgewater kit, please I'll have to come round your house and put your intestines into the loop and thats just icky for a friday morning  
Moto

What if I expand my budget to one of these http://www.performance-pcs.com/catalog/index.php?main_p... but i like it specifically because it has the ability to mount on the back, is there something for this on other kits?

This would be comparable to the Swiftech compact kit you linked before...the difference is the integrated DDC pump on the compact/Drive kit vs the D5 pump in this kit. Both are very good starter kits, especially if you plan to expand the loop in the future.

If you really only need CPU only cooling and don't plan to do much else, consider XSPC Rasa RX or Raystorm EX kits. I wouldn't even bother with Rasa RS kits anymore with the Raystorm EX's out. You can get one of these with a 360 rad for $160-$180 as a complete kit. If you really want to think ahead for future growth, either of those Swiftech kits you mentioned are excellent choices.

Please, please, please, PLEASE avoid Thermaltake watercooling kits. You'll thank us all for it.

I cannot draw ok? but you mount the rad on top of the rails, probably just forward of the joining spar (that I drew the rad on top of  )
You can drill through those to hold the rad in place, don't forget some washers/dampening material, your fans in pull on top of the rad
and your tubes can go into the case however you want

@Rubix, I agree Xspc have negated the Rs market somewhat lol
Moto

Most initial testing I've seen makes the EX series rads a very good buy, even against the RX series when using 1500-2000 rpm fans. There is a very thin margin of performance difference when using medium/high speed fans. I guess the tube and fin density design provides a substantial surface area increase that almost requires a redesign of the RX series for product tiers and specs.

what is so bad about the thermaltake ones?   How much performance would I see if I switched from the rasa 450 rx120 to the swiftech one I listed?

Thermaltake Bigwater watercooling kits are absolute junk. They leak, pumps are weak and/or die and many have mixed metals either in the radiators or fittings (or both).

Well decided to get an h80, not ready for true watercooling!

Enjoy the modding process man, and we are here for when you are ready to make that leap  
Moto