Well I was checking (hardly because internet) the available models of Zotac GTX1070, and here is what I found from cheapest to most expensive:
1- Zotac ZT-P10700G-10M GeForce GTX 1070 Mini 8GB GDDR5 Super Compact Now in stock $425.00
Url at Zotac
https://www.zotac.com/af/product/graphics_card/zotac-geforce%C2%AE-gtx-1070-mini-0
Clocks
Base: 1518 MHz
Boost:1708 MHz
This card is almost identical to the one I have which is the GTX1060 AMP, Small size fits all cases, the cooler is identical, 2 heatpipes only, on my GTX1060 it can handle it because its lower wattage usage, it hovers on the 70C, I expect it to barely keep the 1070 on 80C
2- Zotac ZT-P10700D-10B GeForce GTX 1070 8GB GDDR5 Bulk Pack OEM Now in stock
Open this Url and search for ZT-P10700D-10B
https://www.zotac.com/af/product/all/graphics_cards/all?cuda=&memory_bus=256-bit&video_memory=&sort_by=weight&sort_order=ASC&items_per_page=30
Clocks
Base: 1506 MHz
Boost:1683 MHz
This is a blower design card, no heat pipes, only a heatsink, performs the worst in cooling, expect it to hover on 85C, you boost clocks will much less also (will talk about boost at the end)
3- Zotac ZT-P10700F-10P GeForce GTX 1070 8GB GDDR5 Premium pack Now in stock $439.00
Not found on Zotac website, found on Google
https://www.amazon.co.uk/ZOTAC-ZT-P10700F-10P-GeForce-GTX-1070/dp/B01M1LKNYT
http://www.novatech.co.uk/products/components/nvidiageforcegraphicscards/nvidiagtx1070series/zt-p10700f-10p.html
Core Clock 1506 MHz
Boost Clock 1683 MHz
This one is the most mysterious 1070, from the model number it looks like it have 3xfan cooling solution but without the RGB spectra lightning, but it has clocks same as the blower design one! If it is true that it has 3xfan (mail pcandparts and ask them about it) it will be 325mm long, doesn't fit in most cases but cools pretty well
4- Zotac ZT-P10700C-10P GeForce GTX 1070 AMP! Edition 8GB GDDR5 IceStorm Cooling, Spectra Lighting, PowerBoost Link Now in stock
Clocks
Base: 1607 MHz
Boost:1797 MHz
Their top card as you can see, blackplate, RGB Spectra lightning, Dual fans (big fans), default clock are higher than usual as you can see, card is long but not super, 300mm long
My recommendation is, if pcandparts can confirm that "3- Zotac ZT-P10700F-10P" is a 3xfan card and if your case can fit it (case with removal hdd cage or full tower) this is the best price/performance/cooling option, the second option is "1- Zotac ZT-P10700G-10M", it is cheaper than the Blower design and should cool better.
Bests