Planning for First custom loop

[DominicNikon]

Hello, i'm, planning my first custom loop inside my Corsair 750d case with parts from ekwb and i plan on cooling my cpu and two gpus. What do you guys think of this set up? I'm going to have a box reservoir/pump inside the 5.25in drive bays with a tube going into the cpu block then from the cpu into a 360mm (38mm) at the top of the case then into the top card down to the bottom card through a bridge and from the bottom card into a  bottom 240mm (60mm) radiator and back into reservoir.

the components i am cooling are a amd ryzen 9 3900x (cpu can change since i don't own it yet) and two GTX 980s (overclocked) 

[LIGISTX]

12 minutes ago, DominicNikon said:

Hello, i'm, planning my first custom loop inside my Corsair 750d case with parts from ekwb and i plan on cooling my cpu and two gpus. What do you guys think of this set up? I'm going to have a box reservoir/pump inside the 5.25in drive bays with a tube going into the cpu block then from the cpu into a 360mm (40mm) at the top of the case then into the top card down to the bottom card through a bridge and from the bottom card into a  bottom 240mm (60mm) radiator and back into reservoir.

the components i am cooling are a amd ryzen 9 3900x and two GTX 980s (overclocked) 

Why go from the CPU to rad down to GPU? I would go pump/res, x-flow top 360, CPU, GPU, bottom res (possibly also an x-flow), then back to pump. The cross flows can be really useful at making a loop look good since the inlet is at the other end than the outlet. I use one of these for my top 420, makes it look a lot cleaner. My front is a normal res which works fine since the way its plumed both inlet and outlet are at the bottom and hidden under the PSU shroud area.

 

But besides that, should be fine. You will have to run the fans at a "medium" fan speed to keep all of that cool. My 420 is a 45mm, and my front 280 is a 60mm, and under game load all my fans are ~850 rpm, CPU runs at mid 50-mid 60 depending on game, and GPU is usually sub 52-53, and thats with ambient of about 70F. For you, I would think to keep temps "decent" you will be running the fans ~1500-1700 RPM, but its hard to know for sure. You do have a decent amount of rad space, but that is a lot of heat to keep under control. Any chance you can sell the 980's and pick up a 2070 super or 2080 super? You will save ~100 bucks by not buying a second GPU block, and you will likely have better performance anyways as most games these days don't really use SLI very well. I think a 2080 super would be better almost regardless of SLI optimization in games.

 

Link to an x-flow rad: https://www.amazon.com/Alphacool-NexXxos-Copper-X-Flow-Radiator/dp/B01BJBBPUC/ref=sr_1_4?keywords=x-flow+360&qid=1577934929&s=electronics&sr=1-4

[W-L]

15 minutes ago, DominicNikon said:

Hello, i'm, planning my first custom loop inside my Corsair 750d case with parts from ekwb and i plan on cooling my cpu and two gpus. What do you guys think of this set up? I'm going to have a box reservoir/pump inside the 5.25in drive bays with a tube going into the cpu block then from the cpu into a 360mm (38mm) at the top of the case then into the top card down to the bottom card through a bridge and from the bottom card into a  bottom 240mm (60mm) radiator and back into reservoir.

the components i am cooling are a amd ryzen 9 3900x (cpu can change since i don't own it yet) and two GTX 980s (overclocked) 

That is a good selection I don't recommend the bay res units however due to how readily it transfer vibration and noise to the case compared to tube res combo units. 

[DominicNikon]

1 hour ago, W-L said:

readily it transfer vibration and noise to the case compared to tube res combo

i did not know that. i would do a tube res but i have no idea where i could mount it since i would have a bottom radiator

[DominicNikon]

1 hour ago, LIGISTX said:

I would think to keep temps "decent" you will be running the fans ~1500-1700 RPM

This is what ekwbs website says about my radiator selection and components in terms of temps and noise level but it does not say what fan speed it is running at and i will check out x flow rads. 

1 hour ago, LIGISTX said:

Any chance you can sell the 980's and pick up a 2070 super or 2080 super?

I'm using my saved money to upgrade my i5 4670k to a ryzen 9 3900x or 4th gen ryzen because i will be doing more multithreaded work next year since i start engineering classes which uses solidworks and occasionally some video rendering. I'm not going to be upgrading my GTX 980s because they still perform well enough at 1440p for all the games i play at around 120 fps average when my cpu is really lacking in terms of rendering performance.   

[LIGISTX]

26 minutes ago, DominicNikon said:

This is what ekwbs website says about my radiator selection and components in terms of temps and noise level but it does not say what fan speed it is running at and i will check out x flow rads. 

I'm using my saved money to upgrade my i5 4670k to a ryzen 9 3900x or 4th gen ryzen because i will be doing more multithreaded work next year since i start engineering classes which uses solidworks and occasionally some video rendering. I'm not going to be upgrading my GTX 980s because they still perform well enough at 1440p for all the games i play at around 120 fps average when my cpu is really lacking in terms of rendering performance.   

Nice, good luck in the engineering program! That was me ~10 years ago!

 

That should be a solid performer for you. Like I said, RPM will likely be a little on the high side, but I water cool simply so I never hear my machine. I have been able to achieve that with my build, but that is also in a quiet room. Being in college, you won't be in a quiet room... haha. At least not if your in the dorms or have roomies at all. Always something going on somewhere and that will easily drown out ~1500 rpm fans.

 

Good luck in school!

[W-L]

2 hours ago, DominicNikon said:

i did not know that. i would do a tube res but i have no idea where i could mount it since i would have a bottom radiator

Unless you need all the drive cages, you can get a short version to stick in in the lower front or have it mounted to the right side directly on the motherboard tray. 

[DominicNikon]

9 hours ago, W-L said:

Unless you need all the drive cages, you can get a short version to stick in in the lower front or have it mounted to the right side directly on the motherboard tray. 

how would you mount it to the right side of the motherboard tray?

[DominicNikon]

11 hours ago, LIGISTX said:

good luck in the engineering program! That was me ~10 years ago!

Thank you! what engineering did you do? I'm going into Aerospace Engineering

11 hours ago, LIGISTX said:

That should be a solid performer for you

I just found out i can do a 420mm on top of my case

[W-L]

14 minutes ago, DominicNikon said:

how would you mount it to the right side of the motherboard tray?

Space is a bit tight given the long GPU's but they will be slightly shorter with full cover blocks. Long as you have enough space I would say having short version lower down would work well. You will need to drill and bolt into the tray or make an mounting plate to adapt onto it.

[DominicNikon]

4 minutes ago, W-L said:

Space is a bit tight given the long GPU's but they will be slightly shorter with full cover blocks. Long as you have enough space I would say having short version lower down would work well. You will need to drill and bolt into the tray or make an mounting plate to adapt onto it.

Ok, i will look at the tube resvivors. Also i used both the ekwb and corsair configurator and the ekwb says the max radiator size for my case is a 360mm when the corsair one says the max is a 420mm and the case specs on corsairs website says it can only fit a 360mm on top, who do i believe?

[W-L]

11 minutes ago, DominicNikon said:

Ok, i will look at the tube resvivors. Also i used both the ekwb and corsair configurator and the ekwb says the max radiator size for my case is a 360mm when the corsair one says the max is a 420mm and the case specs on corsairs website says it can only fit a 360mm on top, who do i believe?

The 750D can fit a 420 rad up top but note the mounting position as it may not have enough clerance for the end tanks where the fittings go. It will put them inside of the 5.25" bay with difficult access which is why they say 360mm. Some have modified the case and removed the 5.25" bays to gain more space for both top and front rads. 

 

Here's an example:

https://imgur.com/gallery/oy8bd

Edited January 2, 2020 by W-L

[DominicNikon]

24 minutes ago, W-L said:

750D can fit a 420 rad up top

I've had this case for 5 years and i never knew that. So i should put a 420mm on top and the same 60mm thick 240 radiator on the bottom?

[W-L]

51 minutes ago, DominicNikon said:

I've had this case for 5 years and i never knew that. So i should put a 420mm on top and the same 60mm thick 240 radiator on the bottom?

A 420mm is going to be hard to work with just note if you have tall VRM heatinks and the clearance at the ends of the tanks/fittings since it will be very tight. 
 

For a CPU and Dual GPU that would be more than enough, in general though thicker rads won't be as good as just having longer thinner rads but being a case limitation unless you go with taking out the 5.25" bays it would be your best bet.

[DominicNikon]

57 minutes ago, W-L said:

being a case limitation

i couldn't find any full cover waterblocks for my gpus so i wanted to keep the front intake unrestricted to try and passively cool the memory chips and mosfets.

59 minutes ago, W-L said:

it will be very tight

 if the fittings are in the drive bays would it be better to use 90 degree fittings into the radiator so you don't need to try and bend the tubing as much? 

[W-L]

2 hours ago, DominicNikon said:

i couldn't find any full cover waterblocks for my gpus so i wanted to keep the front intake unrestricted to try and passively cool the memory chips and mosfets.

 if the fittings are in the drive bays would it be better to use 90 degree fittings into the radiator so you don't need to try and bend the tubing as much? 

You will need some heatsinks on those chips especially for the mosfets and VRM.

 

And yes 90 fittings will help, just note the end tank sizes as some may be larger than others and given the small margin of error you don't want to be just a little too large. 

[DominicNikon]

32 minutes ago, W-L said:

You will need some heatsinks on those chips especially for the mosfets and VRM.

 

And yes 90 fittings will help, just note the end tank sizes as some may be larger than others and given the small margin of error you don't want to be just a little too large. 

Ok, i will measure the end tanks before buying it to make sure it fits in my case. For the mosfets and VRM what would be the best way to cool them? thermal pads and just case airflow or do they make actual vrm and mosfet heatsinks with active cooling that would be better?

This is the waterblock that will fit on my graphics card sincer it is not a reference pcb

https://www.ekwb.com/shop/ek-thermosphere-nickel

[W-L]

9 hours ago, DominicNikon said:

Ok, i will measure the end tanks before buying it to make sure it fits in my case. For the mosfets and VRM what would be the best way to cool them? thermal pads and just case airflow or do they make actual vrm and mosfet heatsinks with active cooling that would be better?

This is the waterblock that will fit on my graphics card sincer it is not a reference pcb

https://www.ekwb.com/shop/ek-thermosphere-nickel

Ideally it would be best to trade them for cards that have available full cover blocks but for the VRM and Mosfets having the appropriate sized heatsinks attached with thermal tape and some incidental airflow from case fans will do the job.

[DominicNikon]

14 hours ago, W-L said:

VRM and Mosfets having the appropriate sized heatsinks attached with thermal tape

what would be used to make a heatsink for them? I don't have enough money to trade them for a gpu with a full cover waterblock

[W-L]

1 hour ago, DominicNikon said:

what would be used to make a heatsink for them? I don't have enough money to trade them for a gpu with a full cover waterblock

Depends on the card some have a mid plate that covers the VRM which would suffice, if not you would need to get heatsinks that have adhesive thermal pads to stick into place. What card do you have specifically?

[DominicNikon]

2 hours ago, W-L said:

Depends on the card some have a mid plate that covers the VRM which would suffice, if not you would need to get heatsinks that have adhesive thermal pads to stick into place. What card do you have specifically?

I have a Gigabyte g1 gaming GTX 980 and a Gigabyte OC edition GTX 980

https://www.gigabyte.com/us/Graphics-Card/GV-N980G1-GAMING-4GD-rev-10-11#ov

https://www.gigabyte.com/us/Graphics-Card/GV-N980WF3OC-4GD-rev-10-11#ov

[W-L]

3 hours ago, DominicNikon said:

I have a Gigabyte g1 gaming GTX 980 and a Gigabyte OC edition GTX 980

https://www.gigabyte.com/us/Graphics-Card/GV-N980G1-GAMING-4GD-rev-10-11#ov

https://www.gigabyte.com/us/Graphics-Card/GV-N980WF3OC-4GD-rev-10-11#ov

Both those cards have full cover waterblocks available, being that they are older generations you will need to source new old stock or used blocks. 

https://www.ekwb.com/configurator/waterblock/3831109830376

 

This includes manufacture's such as Bykski:

https://www.ebay.com/p/10008382666

 

[DominicNikon]

12 hours ago, W-L said:

This includes manufacture's such as Bykski:

on ebay it says the waterblock works on both cards but how is that possible if the OC edition has a little different pcb? Also is Byksi a trusted brand since i can't find any used ones?

G1 Gaming

Oc edition (when i re-pasted it)

[W-L]

7 minutes ago, DominicNikon said:

on ebay it says the waterblock works on both cards but how is that possible if the OC edition has a little different pcb?

G1 Gaming

 

Oc edition (when i re-pasted it)

Depends what is different, the points of contact and mounting holes are what are important. If there is no collision with other components on the PCB a single waterblock can work for multiple variants. From what i can see the layout is pretty much the same. 

 

[DominicNikon]

9 minutes ago, W-L said:

From what i can see the layout is pretty much the same. 

oh ok. i was wondering because the oc edition has an extra heatsink where the g1 gaming has a thermal pad attached to the cooler