Oh I got the main idea about multiple GPUs, thank you all.
Ok I'm explaining whole story then. I bought these 3 graphic cards which are Sapphire HD 7950 for mining BTC 8 years ago. After several months I quit mining since new mining machines pop up on market. So the system I bought just wait on a shelf for 7 years.
Now I decide use it as a computer since my own computer's performance going down (it's much more older than mining rig, a laptop,
Toshiba Qosmio F60-111). So brother and I searched and picked some equipment like SSD, RAM etc.
We bough a mid tower case which is compatible with
ATX (
Aerocool Aero One Frost). Since the motherboard ATX (
Asus M5A99FX PRO R2.0), it should be fit. But when we tried to assemble motherboard to case, we faced it doesn't fit just because 3rd graphic card; slightly overflow from edge:
After that we replace it with another case which is bigger and compatible both with
ATX and
E-ATX (
Aerocool AirHawk Duo). But we encountered the same problem with this bigger case.
We discussed about this topic and we decided on two options:
- We will replace the mid tower case with a full tower case (an expensive solution)
- We will remove & sell one graphic card and use 2 graphic cards instead of 3 graphic cards
We really like my brother's computer's performance on games. So we decide to compare: If it will good as his computer with using 2 graphic cards, we will use like that. But if we need that 3rd graphic card, we will try to search a bigger case (probably a full tower).
Then we asked for help from you guys. And based on your comments, we learnt that we never have similar performance with
GTX 1080 even if we use all the 3 graphic cards which are
HD 7950. So most reasonable solution is: We will use 2 graphic cards with this mid tower case for now, and at the first chance we sell all of 3 graphic cards and buy only one
GTX 1080 instead. We came this conclusion based on your comments.
Do you guys also agree with this solution right?
Note: We always play games together so this why we want similar performance.