Couple questions about my first build

[Kiaeneto]

I'm looking at getting custom paracord sleeved wires made for my first build and was wondering how long the standard cables were from the PSU so I know how long I should get the custom ones made. I'm going to be getting a EVGA G3 SuperNova. The site has 20, 30, 40, 50, 60 & 70cm length.

Which length would be long enough for a mid tower build?
Does the CPU need it's power cable? If so what cable?
Also which cables do I need to use? 24 pin for the mobo & two 8 pins for gpu.

Can a monitor that can do 1440p at 144hz can also do 1080p at 144hz? I would like to get as many FPS I can for FPS games so would going 1080p at 144hz be better at getting more FPS say over 1440p at 144hz?

 

[pebbleberries]

A good length I would use is about 50 - 60 cm for the 24 pin and CPU power. For other things like hard drives, it depends where you put them.

The CPU needs a cable or the system won't work. It is a 4 pin cable. 2 yellow and 2 black. It can be 4 yellow and 4 black for really high end CPU's. Even if the motherboard has an 8 pin near the top, a 4 pin will work.

You need a 24 pin for the motherboard, a 4 or 8 pin for the CPU power. The GPU varies by how many connectors it takes. some take a single 6 pin, 8 pin, 6 and 8 pin or even 2 8 pins.

A 144hz 1440p monitor will work with 144hz 1080p but because the scaling isn't perfect, it might look weird.

For example, 1080p on a 4k monitor will work well and look nice because 4k is exactly 4x the pixels but 1440p is not.

you can take the resolution of 1080p and see how many pixels there are. Then see how many pixels are on the monitor you are using by multiplying the pixels horizontal and vertical. and see if your monitor is 4x the pixels as 1080p. It shouldn't unless it's like super ultrawide.

 

[Kiaeneto]

A good length I would use is about 50 - 60 cm for the 24 pin and CPU power. For other things like hard drives, it depends where you put them.

The CPU needs a cable or the system won't work. It is a 4 pin cable. 2 yellow and 2 black. It can be 4 yellow and 4 black for really high end CPU's. Even if the motherboard has an 8 pin near the top, a 4 pin will work.

You need a 24 pin for the motherboard, a 4 or 8 pin for the CPU power. The GPU varies by how many connectors it takes. some take a single 6 pin, 8 pin, 6 and 8 pin or even 2 8 pins.

A 144hz 1440p monitor will work with 144hz 1080p but because the scaling isn't perfect, it might look weird.

For example, 1080p on a 4k monitor will work well and look nice because 4k is exactly 4x the pixels but 1440p is not.

you can take the resolution of 1080p and see how many pixels there are. Then see how many pixels are on the monitor you are using by multiplying the pixels horizontal and vertical. and see if your monitor is 4x the pixels as 1080p. It shouldn't unless it's like super ultrawide.

I'm going to be using a Maximus Code and it looks like it is only a 4 pin for the cpu.

 

[LowlySkeleton]

ASUS ROG Maximus IX Code uses an 8-pin for its cpu, as you would expect from most higher end boards. But no need to worry, the EVGA G3 SuperNova will easily have all the power cables you will need; most modern PSU's rated for 400W or more will have an 8-pin for the cpu. The 8-pin will usually come as as set of 2 similar looking 4-pin connectors. The system may still run normally with a single 4-pin, but it would be unstable if you tried changing any settings away from stock or decided to push to to heavy loads for extended periods of time.

The PSU power cables should usually be long enough to be routed behind your case and back out through a cable management hole. The EVGA G3 should have more than enough length to do so. Your custom extension cables will probably only need to be long enough such that you can't see the connected ends of the cables, effectively hiding them in the back of your case.