i got bored and did a little math on radiator size. granted this is a very simplistic view not accounting for thickness or FPI. but given all other factors the same this would be the comparison. so take a 480 and 420 version of a XS-PC RX radiator for example the triple 140 would perform better given fans of similar spec.
this may be a entirely wrong/ and/or a overly simplistic view but I Thought this was interesting,so i Figured I'd share.
[TABLE=width: 240]
[TR]
[TD=class: xl66, width: 320, colspan: 5]
Surface Area[/TD]
[/TR]
[TR]
[TD=class: xl65]
rad size[/TD]
[TD=class: xl63]
sq.mm[/TD]
[TD=class: xl65]
sq.cm[/TD]
[TD=class: xl63]
sq.in[/TD]
[TD=class: xl65]
sq.ft[/TD]
[/TR]
[TR]
[TD=class: xl64, colspan: 5]
120mm Fans[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
120[/TD]
[TD=class: xl63, align: right]
14400[/TD]
[TD=class: xl65, align: right]
144[/TD]
[TD=class: xl63, align: right]
22.32004[/TD]
[TD=class: xl65, align: right]
0.155[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
240[/TD]
[TD=class: xl63, align: right]
28800[/TD]
[TD=class: xl65, align: right]
288[/TD]
[TD=class: xl63, align: right]
44.64009[/TD]
[TD=class: xl65, align: right]
0.31[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
360[/TD]
[TD=class: xl63, align: right]
43200[/TD]
[TD=class: xl65, align: right]
432[/TD]
[TD=class: xl63, align: right]
66.96013[/TD]
[TD=class: xl65, align: right]
0.465001[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
480[/TD]
[TD=class: xl63, align: right]
57600[/TD]
[TD=class: xl65, align: right]
576[/TD]
[TD=class: xl63, align: right]
89.28018[/TD]
[TD=class: xl65, align: right]
0.620001[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
840[/TD]
[TD=class: xl63, align: right]
100800[/TD]
[TD=class: xl65, align: right]
1008[/TD]
[TD=class: xl63, align: right]
156.2403[/TD]
[TD=class: xl65, align: right]
1.085001[/TD]
[/TR]
[TR]
[TD=class: xl64, colspan: 5]
140mm Fans[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
140[/TD]
[TD=class: xl63, align: right]
19600[/TD]
[TD=class: xl65, align: right]
196[/TD]
[TD=class: xl63, align: right]
30.38006[/TD]
[TD=class: xl65, align: right]
0.210973[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
280[/TD]
[TD=class: xl63, align: right]
39200[/TD]
[TD=class: xl65, align: right]
392[/TD]
[TD=class: xl63, align: right]
60.76012[/TD]
[TD=class: xl65, align: right]
0.421945[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
420[/TD]
[TD=class: xl63, align: right]
58800[/TD]
[TD=class: xl65, align: right]
588[/TD]
[TD=class: xl63, align: right]
91.14018[/TD]
[TD=class: xl65, align: right]
0.632918[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
560[/TD]
[TD=class: xl63, align: right]
78400[/TD]
[TD=class: xl65, align: right]
784[/TD]
[TD=class: xl63, align: right]
121.5202[/TD]
[TD=class: xl65, align: right]
0.84389[/TD]
[/TR]
[TR]
[TD=class: xl64, colspan: 5]
180mm Fans[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
180[/TD]
[TD=class: xl63, align: right]
32400[/TD]
[TD=class: xl65, align: right]
324[/TD]
[TD=class: xl63, align: right]
50.2201[/TD]
[TD=class: xl65, align: right]
0.34875[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
360[/TD]
[TD=class: xl63, align: right]
64800[/TD]
[TD=class: xl65, align: right]
648[/TD]
[TD=class: xl63, align: right]
100.4402[/TD]
[TD=class: xl65, align: right]
0.697501[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
540[/TD]
[TD=class: xl63, align: right]
97200[/TD]
[TD=class: xl65, align: right]
972[/TD]
[TD=class: xl63, align: right]
150.6603[/TD]
[TD=class: xl65, align: right]
1.046251[/TD]
[/TR]
[TR]
[TD=class: xl64, colspan: 5]
200mm Fans[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
200[/TD]
[TD=class: xl63, align: right]
40000[/TD]
[TD=class: xl65, align: right]
400[/TD]
[TD=class: xl63, align: right]
62.00012[/TD]
[TD=class: xl65, align: right]
0.430556[/TD]
[/TR]
[TR]
[TD=class: xl65, align: right]
400[/TD]
[TD=class: xl63, align: right]
80000[/TD]
[TD=class: xl65, align: right]
800[/TD]
[TD=class: xl63, align: right]
124.0002[/TD]
[TD=class: xl65, align: right]
0.861112[/TD]
[/TR]
[/TABLE]