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Swap my Dual MCP 655's for dual 355's?

post #1 of 13
Thread Starter 
Hey guys, I keep hearing about the superiority of 355's to 655's in a high restriction loop. I have dual 655's in my loop which consists of 360rad->Ek Supreme HF (plate 3)->240rad ->780i Nb/SB block -> GTX480 HC FTW->res -> pumps. I do have the pumps in a bitspower dual top. Would I see any noticable difference if I switched to dual (or triple) MCP 355's? Thanks in advance. here are pics of my current setup. (may look familar from post earlier today in other threads)



post #2 of 13
not worth it. Your loop isn't restrictive enough to warrant the switch. @ 655s can handle nearly anything. You probably wouldn't see any temp difference bc with 3 355s you have the added heat dump
 
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post #3 of 13
Thread Starter 
Quote:
Originally Posted by fat_italian_stallion View Post
not worth it. Your loop isn't restrictive enough to warrant the switch. @ 655s can handle nearly anything. You probably wouldn't see any temp difference bc with 3 355s you have the added heat dump
K thanks, the only reason i ask is becuase I just hooked up the 240 rad today with those beautiful bitspower rotary fittings and I had a noticeable slowing of my ek spin res......I was kinda saddened by that. I was like I HAVE TWO 655'S WTH! LOL

EDIT: I see your sig any know you have to be running 355's with that kind of restriction.
post #4 of 13
Quote:
Originally Posted by fat_italian_stallion View Post
not worth it. Your loop isn't restrictive enough to warrant the switch. @ 655s can handle nearly anything. You probably wouldn't see any temp difference bc with 3 355s you have the added heat dump
+1

While the 355s are more efficient and have a touch more power with a good top, I certainly couldn't recommend swapping either direction. 655s have their advantages too, they run cool to the touch (metal impeller housing is better at cooling the pump motor), they are variable (for the silence freaks), and they have a better history of long term reliability.

Both pumps are good pumps, differences are splitting hairs for sure.
Edited by Martinm210 - 3/1/11 at 9:33pm
    
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post #5 of 13
stay with what you have
their is nothing that your 655's wont for you
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post #6 of 13
The difference will be pretty much non-existent. You can only have so much flow before it starts to not matter anymore.
    
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post #7 of 13
Are you running two loops or one? With restrictive components, D5's might get better overall performance from some of that stuff being in parallel, though I can't tell exactly how you have it set up now.
    
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post #8 of 13
Thread Starter 
Quote:
Originally Posted by Phos View Post
Are you running two loops or one? With restrictive components, D5's might get better overall performance from some of that stuff being in parallel, though I can't tell exactly how you have it set up now.
One loop in running in the order listed in the op.
post #9 of 13
Swap out your 45 and 90 degree fittings if you're that worried about restrictive flow.
post #10 of 13
Quote:
Originally Posted by xxlawman87xx View Post
K thanks, the only reason i ask is becuase I just hooked up the 240 rad today with those beautiful bitspower rotary fittings and I had a noticeable slowing of my ek spin res......I was kinda saddened by that. I was like I HAVE TWO 655'S WTH! LOL

EDIT: I see your sig any know you have to be running 355's with that kind of restriction.
yup, dual loops. 1 loop with a eheim hpps and the other with 355s and the dualtop. Going to eventually switch the eheim out for another set of 355s with dualtop
 
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CPUMotherboardGraphicsRAM
i7 3960X w/ EK Supreme HF  Asus Rampage IV Extreme w/ EK full cover Tri SLi EVGA GTX TITAN SC w/ EK full cover & Ba... 64 GB Dominator w/ MIPS Ram Cooler 
Hard DriveHard DriveCoolingCooling
1TB Samsung EVO 850 2x 2TB Western Digital Caviar Black 1x Hardware Labs Black Ice GTX 560  Bitspower Pump Upgrade Kit 
CoolingCoolingCoolingCooling
2x Hardware Labs Black Ice GTX 280 Hardware Labs Black Ice GTX 480 Dual Uber MCP655 Noiseblocker PK-3  
CoolingCoolingCoolingOS
Bitspower Compression Fittings Lamptron FC-8 Noiseblocker PL-2 Windows 7 Ultimate 64bit 
MonitorKeyboardPowerCase
Asus PB287Q 4K Steelseries 7G Custum wired EVGA NEX 1500 Caselabs SMA8 
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Hard DriveOptical DriveCoolingOS
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Project Atlantis
(16 items)
 
 
CPUMotherboardGraphicsRAM
i7 3960X w/ EK Supreme HF  Asus Rampage IV Extreme w/ EK full cover Tri SLi EVGA GTX TITAN SC w/ EK full cover & Ba... 64 GB Dominator w/ MIPS Ram Cooler 
Hard DriveHard DriveCoolingCooling
1TB Samsung EVO 850 2x 2TB Western Digital Caviar Black 1x Hardware Labs Black Ice GTX 560  Bitspower Pump Upgrade Kit 
CoolingCoolingCoolingCooling
2x Hardware Labs Black Ice GTX 280 Hardware Labs Black Ice GTX 480 Dual Uber MCP655 Noiseblocker PK-3  
CoolingCoolingCoolingOS
Bitspower Compression Fittings Lamptron FC-8 Noiseblocker PL-2 Windows 7 Ultimate 64bit 
MonitorKeyboardPowerCase
Asus PB287Q 4K Steelseries 7G Custum wired EVGA NEX 1500 Caselabs SMA8 
MouseMouse Pad
Rat 7 Razer Goliathus XL 
CPUMotherboardGraphicsRAM
i7 920 c0 @ 4.2 Ghz w/ 1.4v max 4.6ghz @1.55v w... Asus P6T6 WS Revolution w/ koolance nb/sb+mosfe... EVGA GTX 480 x3 w/ Koolance Vid-NX480 12gb Corsair Dominator 1600mhz w/ MIPS Ramcooler 6 
Hard DriveOptical DriveCoolingOS
1.5 Tb Seagate barracuda x3 LG Bluray Burner 2x SR1 360, RX 360, SR1 240, SR1 120, 2x MCP355... Win 7 Ultimate 64bit 
MonitorKeyboardPowerCase
Samsung t260 x3 Razer Black Widow Ultimate Silverstone st1200 Mountain Mods U2UFO w/ MM Pedestal Addition 
MouseMouse PadAudioAudio
Razer Mamba Razer Destructor X-Fi Fata1ity Logitech Z-5500 
CPUGraphicsRAMHard Drive
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