What GPU'S can I upgrade to with old CPU Build (Specs included)

[elsewhere]

Trying to dip my foot in slowly before building an open air rig, my current laptop has been earning me 3 - 5 per day mining alt coins through nicehash (I know they got hacked, but I'm just testing anyhow), I have an Nvidia 1070m.  Plan is hopefully outfit the older gaming cpu with 3 new GPU's to start learning over next couple weeks before going for a full linux open air rig likely using simpleminer as the OS.  I haven't been following as well as I should have and have obvioiusly missed many upgrade rounds on this old CPU.  I'm just not sure if this could handle 3 1080 ti's haha, or if I should go for 1070 ti's or some combo there in.  I know 3 1080 ti's I'd likely just upgrade to an EVGA 1600 (so I could port that to my mining rig).  Would love to know if I can find some way to make that work, because then just 3 more 1080 Ti's and I can get the next rig started, use this old fart as my test bench potentially.  I am guessing however there may be a problem with the MoBo doing too well with these since it can't utilize DDR4 memory which from my research would help both 1070 ti and 1080 ti's. 

My rig:

CPU: amd phenom ii x6 black edition 1100t
Mobo: ASUS ROG Crosshair V Formula Z
GPU: (WHAT DO YOU RECOMMEND) (current is AMD 6870 1GB lol!)
PSU: 800W Gold Cooler Master Silent Pro
Case: Coolermaster Haf X
RAM: G. Skill 1600 2x4 and corsair ram 8gb ddr3 (2x4gb) 1600mhz
Hard Drive: 240GB Samsung Pro and a bunch others.
OS: Windows 7 (guessing I'll need to upgrade to 10)

Let me know if there's anything else important, I'm guessing not, the CPU is water cooled (recirculating Corsair h100?)  but that doesn't matter unless it pops since CPU wont be doing squat.  Ambient pretty stable all year round at about 20 - 22 C.  If I could run the 1080 ti's but suboptimally due to lack of DDR4 access then maybe I could start with that until I'm comfy enough to build the next 6xGPU or 8xGPU rig.

[MagicSmoker]

My old desktop has a Phenom II 955, so even less powerful than yours, and it is currently mining ZEN at ~600 Sols/s with 2 GTX 1060 3GB. The O/S is Windows 7 so that isn't an issue with one caveat: the fabled "Compute" (aka "mining") mode in AMD drivers is only available in Windows 10. If you want to use AMD cards *and* mine an Ethash coin (e.g. - Ethereum, Ubiq, Musicoin, etc.) then you'll want to move over to Win 10, otherwise don't bother switching to Windows 10.

EDIT - added italicized phrase at end to make my point more clear.

[leonix007]

My old desktop has a Phenom II 955, so even less powerful than yours, and it is currently mining ZEN at ~600 Sols/s with 2 GTX 1060 3GB. The O/S is Windows 7 so that isn't an issue with one caveat: the fabled "Compute" (aka "mining") mode in AMD drivers is only available in Windows 10.

If you want to use AMD cards *and* mine an Ethash coin (e.g. - Ethereum, Ubiq, Musicoin, etc.) then you'll want to move over to Win 10, otherwise don't bother.

Don't confuse people, I am mining windows 7 with AMD drivers, I can switch to Ethash, Cyptonight smoothly. just use the proper driver and you will not have problem with it.

[MagicSmoker]

Don't confuse people, I am mining windows 7 with AMD drivers, I can switch to Ethash, Cyptonight smoothly. just use the proper driver and you will not have problem with it.

I didn't say the AMD drivers won't work in Windows 7, just that "Compute" mode won't be available, and, at least for me, enabling Compute mode bumped up my Ethash speed by about 1 MH/s (before the other stuff like O/C and BIOS modding, etc.).

[leonix007]

Don't confuse people, I am mining windows 7 with AMD drivers, I can switch to Ethash, Cyptonight smoothly. just use the proper driver and you will not have problem with it.

I didn't say the AMD drivers won't work in Windows 7, just that "Compute" mode won't be available, and, at least for me, enabling Compute mode bumped up my Ethash speed by about 1 MH/s (before the other stuff like O/C and BIOS modding, etc.).

If you want to use AMD cards *and* mine an Ethash coin (e.g. - Ethereum, Ubiq, Musicoin, etc.) then you'll want to move over to Win 10, otherwise don't bother.

suggesting people to don't bother on windows 7 for 1mh up speed, Lol, anyways its your take. the real Hashrates of AMD Cards will unleashed by modding them.

[MagicSmoker]

Don't confuse people, I am mining windows 7 with AMD drivers, I can switch to Ethash, Cyptonight smoothly. just use the proper driver and you will not have problem with it.

I didn't say the AMD drivers won't work in Windows 7, just that "Compute" mode won't be available, and, at least for me, enabling Compute mode bumped up my Ethash speed by about 1 MH/s (before the other stuff like O/C and BIOS modding, etc.).

If you want to use AMD cards *and* mine an Ethash coin (e.g. - Ethereum, Ubiq, Musicoin, etc.) then you'll want to move over to Win 10, otherwise don't bother.

suggesting people to don't bother on windows 7 for 1mh up speed, Lol, anyways its your take. the real Hashrates of AMD Cards will unleashed by modding them.

Oh, it looks like you didn't understand what I wrote. I meant, "don't bother upgrading to Windows 10" not, "don't bother mining Ethash" but I can see how it could be read the other way so I'll edit my post to make it more clear.