CPU I don't know... should work if same socket. I have installed a GPU MSI GeForce RTX 4090 SUPRIM LIQUID X with the following dimensions: Length
27.50 cm | width 7.80 cm | height 4.30 cm - larger is also possible, but then you have to tinker with the case because a fan gets in the way. It is then important to install a new power supply unit that has enough power and connections. I bought the "be quiet! Pure Power 12 M" for this purpose.

Hi Ulas. I can't answer that with CPU, should work if the same socket. But I have installed an RTX4090 SUPRIM LIQUID X in this PC: MSI GeForce RTX 4090 SUPRIM LIQUID X (24 GB) It had the dimensions length: 27.5cm / width: 7.8cm and height 4.3cm - you can't get much bigger than that. It's possible, but then you have to modify a few things - the fan gets in the way. It's important to note that you'll have to install a larger power supply in order to have enough power and connections. I bought this one and it worked without a hitch: be quiet! Pure Power 12 M (1000 W)