Convert SFF to ATX

[Avenger_007]

Hi guys for first thing >> Im gonna say sorry for my bad English !
i have a hp 8300 SFF with i7 3770 Processor and 4 GB ram...
i was thinking change the case and convert it to a bigger case
Because i wanna a powerful graphic card and powerful graphic cards needs more amount of watts
and this power supply is just 240W
i dont know what is my motherboard type or model  ? (is mini atx ? micro ?  what ???) , and i dont know is it going to fit and fix with new case ?
note : if my motherboard is going to fix with big case i will have a larger and stronger Power supply and then i can buy a new graphic card .

please help me my board is compatible with big cases ? can i replace the PSU ? 

[Photoray002]

Moved to the HP workstation section so someone with experience with that machine can offer advice.

[DGroves · Accepted solution]

the 8300 was available in SFF (235 watt) and a minitower 400 watt supply the supplies are not cross compatible size wise

the mini tower can fit either, but the SFF pwr supply wires are to short

the SFF uses a smaller sized supply so it will not take the larger minitower one

the exact same motherboard is used in both SFF and minitower

while there are minitower ATX  adapters, it's not going to work in your case unless you can find a Uniquely  sized atx supply that fits the SFF models and i currently don't know of any

also the motherboard is not a ATX standard layout

https://www.moddiy.com/products/HP-Compaq-Elite-8300-CMT-PSU-Main-Power-24-Pin-to-6-Pin-Adapter-Cabl... 

[Avenger_007]

Tnx for helping😉