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Does a 120mm rad add much cooling capacity?

I have a system with a 2080 Ti and 3900X right now cooled by a 280mm rad in a custom loop. I was wondering if adding a 120mm rad into the loop, which is the only additional cooling I can add in the Corsair 500D SE would actually add much cooling capacity to the loop too accommodate for future GPU and CPU upgrades as wattages increase?

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no , adding more rads won't do much if you're just blowing hot air through them. Can actually get more improvement by just making the air colder

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Both your 2080ti and the 3900x are cooled by the 280mm rad or just the cpu?

CPU: Intel Core i9-10900K  MOBO: ROG MAXIMUS XII FORMULA GPU: 2080ti Hall of Fame 10th anniversary limited edition  PSU: Asus ROG THOR 1200W  COOLER: Optimus foundation black acetal RADS: 3x EKWB CoolStream PE 360  LOOP: EKWB torque HDC fittings / EKWB ZMT 15,9/9,5mm / EKWB CryoFuel Clear MONITOR: Acer predator X34

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2 minutes ago, TheRedViper said:

Both your 2080ti and the 3900x are cooled by the 280mm rad or just the cpu?

Both. My setup is Res > GPU > CPU > 280mm Rad. Thinking of going Res > GPU > 120mm Rad > CPU > 280mm Rad.

OBSIDIAN: CPU AMD Ryzen 9 3900X | MB ASUS ROG Crosshair VIII Hero Wifi | RAM Corsair Dominator RGB 32gb 3600 | GPU ASUS ROG Strix RTX 2080 Ti OC |

Cooler Corsair Hydro X | Storage Samsung 970 Evo 1tb | Samsung 860 QVO 2tb x2 | Seagate Barracuda 4tb x2 | Case Cosair Obsidian 500D RGB SE |

PSU Corsair HX750 | Cablemod Cables | Monitor Asus PG35VQAsus PG279Q | HID Corsair K70 Rapidfire RGB low profile | Corsair Dark Core Pro RGB SE | Xbox One Elite Controller Series 2

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13 minutes ago, DELTAprime said:

I have a system with a 2080 Ti and 3900X right now cooled by a 280mm rad in a custom loop. I was wondering if adding a 120mm rad into the loop, which is the only additional cooling I can add in the Corsair 500D SE would actually add much cooling capacity to the loop too accommodate for future GPU and CPU upgrades as wattages increase?

Depends entirely on the loop configuration, flow rate, and ambient/in-case temps. We can't say for certain.

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1 minute ago, DELTAprime said:

Both. My setup is Res > GPU > CPU > 280mm Rad. Thinking of going Res > GPU > 120mm Rad > CPU > 280mm Rad.

What are your temps? Because a single 280mm rad to cool about 500W of heat load seems not sufficient. I looked at your case and they say you can place 3x120 or 2x140 at the front, 2x120 or 2x140 at the top and 1x120 at the rear. 

CPU: Intel Core i9-10900K  MOBO: ROG MAXIMUS XII FORMULA GPU: 2080ti Hall of Fame 10th anniversary limited edition  PSU: Asus ROG THOR 1200W  COOLER: Optimus foundation black acetal RADS: 3x EKWB CoolStream PE 360  LOOP: EKWB torque HDC fittings / EKWB ZMT 15,9/9,5mm / EKWB CryoFuel Clear MONITOR: Acer predator X34

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2 minutes ago, TheRedViper said:

What are your temps? Because a single 280mm rad to cool about 500W of heat load seems not sufficient. I looked at your case and they say you can place 3x120 or 2x140 at the front, 2x120 or 2x140 at the top and 1x120 at the rear. 

Been a while since I looked at what temps I'm getting. I was in the high 50s on the 2080 Ti and I'm not sure what I was on the 3900X. I did the watercooling upgrade to learn how to do it and have some fun, not to get super low temps. I'm happy just to have my 2080 Ti be able to maintain a boost of around 1900 to 2000mhz without dropping.

 

Also for the 500D SE ignore the front mount rad position. You can't fit a rad in the front and still have room for a res unless you go for a super compact pump res combo like the XD3. You are basically limited to a 280mm in the top and a 120mm on the rear.

 

If a 120mm rad in the rear will add cooling capacity I'm happy to do it next time I do maintenance. Again, I'm not doing this for super low temps, that said I'm not opposed a few degrees lower temps.

OBSIDIAN: CPU AMD Ryzen 9 3900X | MB ASUS ROG Crosshair VIII Hero Wifi | RAM Corsair Dominator RGB 32gb 3600 | GPU ASUS ROG Strix RTX 2080 Ti OC |

Cooler Corsair Hydro X | Storage Samsung 970 Evo 1tb | Samsung 860 QVO 2tb x2 | Seagate Barracuda 4tb x2 | Case Cosair Obsidian 500D RGB SE |

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2 minutes ago, DELTAprime said:

Been a while since I looked at what temps I'm getting. I was in the high 50s on the 2080 Ti and I'm not sure what I was on the 3900X. I did the watercooling upgrade to learn how to do it and have some fun, not to get super low temps. I'm happy just to have my 2080 Ti be able to maintain a boost of around 1900 to 2000mhz without dropping.

 

Also for the 500D SE ignore the front mount rad position. You can't fit a rad in the front and still have room for a res unless you go for a super compact pump res combo like the XD3. You are basically limited to a 280mm in the top and a 120mm on the rear.

 

If a 120mm rad in the rear will add cooling capacity I'm happy to do it next time I do maintenance. Again, I'm not doing this for super low temps, that said I'm not opposed a few degrees lower temps.

It definitely won't hurt. I believe the best would be to have 3 fans in the front as intake and use both the 280mm rad at the top and the 120mm at the back in a pull setup so they serve as exhaust too.

CPU: Intel Core i9-10900K  MOBO: ROG MAXIMUS XII FORMULA GPU: 2080ti Hall of Fame 10th anniversary limited edition  PSU: Asus ROG THOR 1200W  COOLER: Optimus foundation black acetal RADS: 3x EKWB CoolStream PE 360  LOOP: EKWB torque HDC fittings / EKWB ZMT 15,9/9,5mm / EKWB CryoFuel Clear MONITOR: Acer predator X34

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Just now, TheRedViper said:

It definitely won't hurt. I believe the best would be to have 3 fans in the front as intake and use both the 280mm rad at the top and the 120mm at the back in a pull setup so they serve as exhaust too.

Ok thanks for your help. I'll add the extra rad next time I do maintenance. I'm also going to replace the fans when I do that, the Corsair LL fans are ok, but not amazing.

OBSIDIAN: CPU AMD Ryzen 9 3900X | MB ASUS ROG Crosshair VIII Hero Wifi | RAM Corsair Dominator RGB 32gb 3600 | GPU ASUS ROG Strix RTX 2080 Ti OC |

Cooler Corsair Hydro X | Storage Samsung 970 Evo 1tb | Samsung 860 QVO 2tb x2 | Seagate Barracuda 4tb x2 | Case Cosair Obsidian 500D RGB SE |

PSU Corsair HX750 | Cablemod Cables | Monitor Asus PG35VQAsus PG279Q | HID Corsair K70 Rapidfire RGB low profile | Corsair Dark Core Pro RGB SE | Xbox One Elite Controller Series 2

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1 minute ago, DELTAprime said:

Ok thanks for your help. I'll add the extra rad next time I do maintenance. I'm also going to replace the fans when I do that, the Corsair LL fans are ok, but not amazing.

They're pretty, but yeah they dont push that much air like 43cfm even though the static pressure is acceptable at like 1.6

CPU: Intel Core i9-10900K  MOBO: ROG MAXIMUS XII FORMULA GPU: 2080ti Hall of Fame 10th anniversary limited edition  PSU: Asus ROG THOR 1200W  COOLER: Optimus foundation black acetal RADS: 3x EKWB CoolStream PE 360  LOOP: EKWB torque HDC fittings / EKWB ZMT 15,9/9,5mm / EKWB CryoFuel Clear MONITOR: Acer predator X34

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Why only a 120mm? Do you not have capacity in your case for anything bigger?

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