Are my prebuilt pc and custom built pc parts compatible with each other?

[sidewinder44]

One of my family members got a decent pre built pc a little over a year ago, but I am thinking about switching some parts out since the case for the prebuilt is awful and has hardly any fan slots. My gpu is getting over 90c, and i'm thinking about switching parts over to my old custom built pc with a much better case/airflow. I am not sure which parts are compatible with each other (im new to the whole pc building thing I apologize) any help would be appreciated.

My prebuilt pc: https://www.newegg.com/Product/Product.aspx?Item=N82E16883101473

CPU: Intel Core i7 6th Gen 6700 (3.40 GHz)

GPU: AMD Radeon RX 480 4 GB GDDR5

RAM: 8 GB DDR4



My custom built pc parts:

Motherboard: https://www.msi.com/Motherboard/970a-g43.html

Power supply: https://www.evga.com/products/product.aspx?pn=100-B1-0600-KR

RAM: 4 GB DDR3 1600

Case: https://www.corsair.com/us/en/Categories/Products/Cases/Carbide-Series%E2%84%A2-SPEC-01-Red-LED-Mid-Tower-Gaming-Case/p/CC-9011050-WW


I'm wondering if I can mix better parts from my old pc (if they're better that is)
and if they'd be compatible.
I apologize if this isn't clear enough, I never built a pc before so any help would be greatly appreciated.
My old pc is also around 3 years old.

 

[volkgren]

You can't change the motherboards, one is AMD the other is Intel. You might be able to use the CPU and motherboard from the prebuilt in your cust, but it would depend on if the prebuilt motherboard screw holes line up with the custom case.

 

[sidewinder44]

You can't change the motherboards, one is AMD the other is Intel. You might be able to use the CPU and motherboard from the prebuilt in your cust, but it would depend on if the prebuilt motherboard screw holes line up with the custom case.

Apologies for lack of reading/research, thank you so much for the help, I'm going to take a look and see if the screw holes line up, if not I'll consider buying a compatible motherboard in the future.

 

[rgd1101]

keep the prebuild, your custom is old

 

[sidewinder44]

keep the prebuild, your custom is old

I wanna keep it how it is, but the gpu overheats extremely easily on newer games. I've looked up multiple guides on fan speeds and none of them seem to cool it down any. Within 5 minutes on games like Fallout 4, the gpu reaches 90c+.
What's the best way to seeing if the motherboard would fit in the custom case?

 

[volkgren]

I see that case does have very poor airflow with no intake fans (that I can see). You could leave the side-panel off, but that's not very practical if you like things tidy.

If you haven't selected a custom fan profile with something like AMD Wattman (which I don't really like) or MSI Afterburner (very easy and simple to use), then you should try that; though I must warn you the fan on that GPU will get loud. Wattman will actually throttle the GPU if you don't configure it just right.

 

[sidewinder44]

I see that case does have very poor airflow with no intake fans (that I can see). You could leave the side-panel off, but that's not very practical if you like things tidy.

If you haven't selected a custom fan profile with something like AMD Wattman (which I don't really like) or MSI Afterburner (very easy and simple to use), then you should try that; though I must warn you the fan on that GPU will get loud. Wattman will actually throttle the GPU if you don't configure it just right.

I haven't tried wattman but I have tried many different fan profiles in MSI afterburner and it still gets very hot. I think the case just has very bad air flow.