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Need advice on which heatsink. Pal8045U or AX-7?

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Kent

Member
Joined
Jan 4, 2001
I have an Alpha Pal8045U with the Delta 80mm, 46.1CFM, 40dBA and a Thermalright AX-7 with a Mechatronics 80mm, 53CFM, 39dBA. Which one should I use on my new 1800+ system. Thanks, Kent :)
 

NASsoccer

On a string I was held Senior
Joined
Jul 11, 2001
Location
i live
my vote goes to the ax-7. I myself might jump ship to this hsf with all the hype and all the good results from the testing. It looks to be as good as most are making it out to be.
 
OP
K

Kent

Member
Joined
Jan 4, 2001
Thanks! I'll probably go with the AX-7. 7 more CFM and 1 dBA quieter, which I don't think you can tell. :) Plus, one Hellavu sink!!! I just wanted some advice. Anyone else??? Thanks, Kent :)
 

Über~PhLuBB

Jedi Knight Senior
Joined
May 9, 2001
Location
Portland, OR
I also think you should go with the AX-7. You can take a look at what Overclockers.com got temperaturewise for virtually all heatsinks worth concidering. The AX-7 has the best temperature to wattage radio of them all, INCLUDING the mighty Swiftech MC-462A.
 

Vash

Registered
Joined
Mar 13, 2002
Location
Canada, eh?
The Alpha was using a 37CFM 80mm fan, which produced FAR less noise than the fan the AX7 was tested with...
 

portorock

Member
Joined
Feb 2, 2001
Location
Quantico, Va but am from Queens, NY
I've got the AX-7 with the big Delta fan, and it almost blew me away. I had to change the speed of it, too loud. I did that and added a 120mm fan with adjusted speed, and combined they are lower than the Delta at full speed, with no temp change. As for which hsf, AX-7. It's great with a strong fan if you can take the noise. Huh, did you say something?:D
 

muddocktor

Retired
Joined
Nov 1, 2001
Location
New Iberia, LA
I don't own an AX7, but from what I've read, either one will be a great choice. I think that the Delta fan would be the way to go with either heatsink though, because it is a focused flow fan and should put up more static air pressure than the Mechatronics fan. You can try either fan on either of those heasinks though because they are both 80 mm fans. Also, from the posts I've read so far on the AX7, you will probably want to lap the machining marks off the base of the heatsink so that you will have maximum contact with the core. The posts I've read so far on the AX7 say that there is obvious machining marks left on the base the way they are shipping them out presently and this will affect it's cooling capability. I found the same problem with my 8045 and lapped it down smooth.
 

donny_paycheck

Inactive Super Quad Mod
Joined
Oct 25, 2001
Since AMD is doing away with the bolt holes around the socket, I would get an AX-7 even if it weren't the best option for performance because it would be able to be used on future boards. I love the 4 bolt mounting method - it's the best by far - but 6 tabbed mounting is pretty good.

For a fan use the FFB0812HHE Delta. It's the quietest of the focused flow fans; quieter than the 50CFM Sunon even, but it still pushes 45CFM. I went from the 68CFM Delta to this one on my MCX462 and noticed no performance drop whatsoever. It's VERY quiet too.
 

Vash

Registered
Joined
Mar 13, 2002
Location
Canada, eh?
OK guys, when you read the heatsink ratings, DO IT INTELLIGENTLY....


You can't compare the Alpha's performance directly to that of the Thermalright. THEY USE DIFFERENT FANS. In this case, the alpha had a measly (and quiet) 37cfm fan, guys, this is barely any better than 80mm case fans, and it STILL manages to cool incredibly well. The AX7 uses a Delta screamer for it's results. Now if someone were to compare them both at the same airflow, using the ondie temp reader, then you can say which one performs better...
 

Lou Natic

Member
Joined
Jan 31, 2002
Location
Austin
Tomorrow I should be getting my 80-120mm fan adapter and my 131CFM fan to throw on top of my 8045. Should be interesting to see what happens to the temps.