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Stacking two EX240 radiators - Page 2

post #11 of 16
With your max rpm of 800, I'm convinced the RX would lower your temps. But would it be a significant difference? Probably not. You already have a ton of rads for cooling. What temps are you hitting right now that make so eager to change?

Here was a review of EX 360 with others in comparison.
post #12 of 16
might be a tad too late to post op, but have you tried using shrouds? Im not 100% sure but Iv read that shrouds help keep all the fan air flow concentrated to the rad more as oppose to loosing air flow through gaps between rad and fan, and helps decrease vibration, here in Australia 120mm fan shrouds go for around AUD $4 abouts there, so a few dollars out might be worth it, or might not , then again worst case scenario u still end up killing some vibration noise ? smile.gif

also note** there are rad shrouds that are for the longer rads and also ones that are made of rubber and also foam smile.gif
post #13 of 16
With an 800RPM fan speed, I'd recommend you to get the Alphacool st30 rather than the XSPC RX. The ST30 performs better than the RX at lower fan speeds, but, the RX performs better at higher fan speeds. This is because the ST30 is tuned for lower fan speeds. Although, even with a different radiator, I don't think it would make too much of a difference in temperatures.
post #14 of 16
What speed fans would you say the EX is best for? I ordered an EX240 kit tonight. I usually run my case fans at 1000-1300.
post #15 of 16
The more fan the better. All rads perform within about 15% of each other so don't expect eye popping gains no matter which brand or how thick they are.

Despite the density FPI count expectations, I did find the EX to be slightly tuned for slower speed fans compared to the RS which is attributed to the split fin vs folded fin construction differences. The RX was slightly better than both using double thickness folded fin and even lower density construction.

xspc-rx360vsrs360vsex360v2r.png

This was an earlier version though which has since been updated but it gives you some relative info anyhow.

I would NOT recommend changing rads, you would gain more by going push plus pull (~30% gain) which is more than any rad swap could give you. Use what you have and work on optimizing fans and cold ambient intake.

Avoid sandwiching at all costs, you would have to run 4000rpm + fans in push/push/pull before you would start to overcome the air's specific heat capacity bottleneck. Conventional rads in a single push or pull condition are typically netting 70-85% air efficiency levels, so not much cooling left in the air for more exchange and the restriction losses cause more harm than good. Gotta have fresh cold ambient entering each rad or forget it.
Edited by Martinm210 - 12/1/13 at 2:59pm
    
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CPUMotherboardGraphicsRAM
3930K ASrock X79 Ext7 Evga GTX570 CORSAIR Vengeance 16GB 
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Phoenix SSD+2TB Seagate drives ASUS DVD-RW combo Windows 7 28" Hanns-G HZ281 
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post #16 of 16
I have done more research since posting that, seems like 1300-1400 will be a good middle of the road. Im pretty sure I will eventually be ditching the EX240 for a 360, not sure which model, once I get a new case. I notice it's snowing on your site now too, nice touch.
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