The "form factor."
Case: Your motherboard must be able to fit in your case and must support your motherboard size (correctly placed standoffs). Power Supply: You can't have a shortage of power or else your power supply will get overloaded and "die", or even possibly explode for that matter.
If the new one is the same size as the old, and you've got enough power supply to run it, it should work fine.
The only limits you would have are based on the size of your case. After that you are limited by the kind of Power Supply you have and what kind of connectors it has.
To determine if your video card is compatible with your slot, first, check the type of slot on your motherboard, typically PCIe (Peripheral Component Interconnect Express) for modern cards. Then, verify the video card's connector type; it should match the motherboard slot (e.g., PCIe x16). Additionally, consult the motherboard’s specifications and the video card’s requirements to ensure compatibility in terms of size, power supply, and cooling.
It will all depend on which motherboard you have and how many ancilliaries such as disk drives and Optical drives you are going to use. Check with makers of your computer motherboard. These days the average suitable supply is 450Watts. 750 Watt or greater, for gaming computers.
Usually, there are specifications listed for that on the case manufacturer's website. Go to the site, find the case you want to buy, and on that case's individual webpage it usually has information such as what size of motherboard the case can fit, how many bays for hard and optical drives it has and what kind of power supply will fit in it.
Micro-ATX
It depends on your motherboard specifications. But the screw size that fits most is: • Head: Hex / Phillips • Thread: 6-32 • Length: 5/32 in (4mm)
A proprietary power supply refers to a power supply unit that is specifically designed for a particular brand or model of device, often incorporating unique connectors or specifications that are not compatible with standard power supplies. This can limit users' options for replacement or upgrades, as they must use the manufacturer's designated power supply. Such power supplies are common in certain electronics, like laptops and gaming consoles, where optimized performance and size are critical. While they can ensure reliability and safety, they may also lead to higher costs and less flexibility for consumers.
Possibly not enough output power. Are you sure that you got the right size power supply?
Case form factor determines the physical size of a power supply and the placement of a screw holes. It can be ATX, microATX, BTX and others.
It is an ATX motherboard. But even though it is an ATX size it is a company specific motherboard, and is not compatible with standard ATX cases.