Reddit reviews StarTech.com 6in SATA Power to 6 Pin PCI Express Video Card Power Cable Adapter - SATA to 6 pin PCIe power, Black, Yellow (SATPCIEXADAP)

Not all molded, but the majority of the adapters catching fire were molded.
Not sure on those particular adapters, but I do have some Startech 2xSATA to 1x6-pin Y adapters, that happen to be molded, in a mining rig that have been fine.
https://www.amazon.com/gp/product/B007Y91B80/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
It's possible I just got lucky.
I'm sure there are y-cables that are crimped, just possibly hard to find. Cable Matters does make a 1 to 4.
https://www.amazon.com/Cable-Matters-Pack-Power-Splitter/dp/B012BPLW08

First, some numbers for you.

A stock R9 290X will do around 29-30MH/s (Claymore) and use ~250W of power at the GPU side, which translates to 312W from the wall at 80% efficiency. Add ~80W at the wall for the CPU/mobo and you're at ~400W for single-coin mining. That's pretty good even for a 600W PSU (but not good if your electricity is expensive). I've run this card with a 180W card on a 750W PSU with no issues.

I've been able to undervolt an R9 so it hovers around 190W at the PSU at 29MH/s but I haven't had the time to push it further. MSI Afterburner has been weird in applying settings. So that setting draws 350W at the wall for single mining, 450W for dual. OUCH.

Now, in your case - you only have 2 VGA power cables so, like you mentioned, you need to use a 6-pin adapter. You say SATA, but be aware that 1x SATA is specced to provide up to 50W. **DO NOT USE SOMETHING LIKE THIS*: https://www.amazon.com/Monoprice-108494-8-Inch-15-Pin-Express/dp/B009GUP6O0 - first review mentions that they melt! Of course they do, they are pulling all the power from a single SATA pin (even though it goes across two cables, it's the pin that's going to overheat). 6-pin is specced to provide up to 75W, 8-pin up to 150W.

These are much better because 2xSATA (50+50W) exceeds the spec of 6pin (75W) - but I would not do 2xSATA to 8pin:
https://www.amazon.com/StarTech-com-SATPCIEXADAP-6-Inch-Express-Adapter/dp/B007Y91B80
https://www.amazon.com/Cable-Matters-2-Pack-Molex-Power/dp/B01DV1Z22K
https://www.amazon.com/Tenext-Power-Express-Connector-Adapter/dp/B00DP98P0A

Now, the million-dollar question - which rail are your SATA connectors on? You want to be able to provide 150W over the SATA adapters.

TLDR: A good** 750W PSU is fine for running that combo, but yours might be problematic. You can try, but get dual SATA adapters and definitely watch them for overheating.

Those are PEG 6 pin and PEG 6+2 Pin connectors. You can use adapters like this 6 pin and this 8 pin to get some extra of these if your power supply does not provide any more. Each will consume two SATA power connectors (molex versions are also available). But most of all, make sure your power supply is strong enough to handle those cards and your system.

No, that's dangerous. Usually a double Molex to PCIE adapter is used, but your PSU doesn't have two Molex. Try this (make sure you have two unused SATA connectors).

Here is the psu I would recommend https://www.amazon.com/dp/B01CGGOXWQ/ref=cm_sw_r_cp_api_y1mDzbA4C4VRW

The psu is worth every cent, it is a small compact one with a lot of power. Make sure to ask Reddit to confirm that it is removable

Check to see if you have a 24 pin or a 10 pin port on your motherboard. I had a 10 pin so I had to get a 24 to 10 pin adapter here is what I used https://www.amazon.com/dp/B06WV9Z9QT/ref=cm_sw_r_cp_apip_wnw9ArYLBceg7

You may also need a 6 pin adapter which I bought here https://www.amazon.com/dp/B007Y91B80/ref=cm_sw_r_cp_apip_6zSf6rWjKorTR

I can sell you my 750Ti. It does require a 6 Pin PSU cable to work, but you can use something like this or this which should be ok.

Would this work for time being?

If your PSU doesn't have one you may need something like this.

If you can use a direct 6-pin, do so. If you must use SATA, and I've found doing so with 1080Ti's to be unstable, then use a dual sata to 6-pin. For example: https://www.amazon.com/dp/B007Y91B80/ref=asc_df_B007Y91B805139298/

To be honest I might just buy this, but I'm nervous that it might not be right for my power supply. It doesn't look too complicated to sleeve either.

Use some of those sata power plugs and get some of these:
https://www.amazon.com/StarTech-com-SATPCIEXADAP-6-Inch-Express-Adapter/dp/B007Y91B80/ref=sr_1_3?ie=UTF8&qid=1500042074&sr=8-3&keywords=pcie+power+cable

so something like this: https://www.amazon.com/StarTech-com-SATPCIEX8ADP-6-Inch-Express-Adapter/dp/B007Y91B80?th=1

And both drives should get plenty of power from connecting this way and work just fine?

Thank you for your quick help & info Bman! :)

something like this?

https://www.amazon.com/StarTech-com-SATPCIEXADAP-6-Inch-Express-Adapter/dp/B007Y91B80

You can also get 4 pin molex to power connectors, or sata, that should solve the problem?


Such as this


https://www.amazon.ca/Startech-Com-6-Inch-Express-Adapter-SATPCIEXADAP/dp/B007Y91B80

http://ca.pcpartpicker.com/part/xfx-power-supply-p1550sxxb9

>I don't want to have to waste a ton of money tracking down the person who submitted the psu and shove it down their throat

Mwahahaah

What PSU did you buy?

http://www.youtube.com/watch?v=BaTpiFh8Ivg

If you have 2 free molex

http://www.newegg.com/Product/Product.aspx?Item=N82E16812200106

or 2 SATA power

http://www.amazon.com/StarTech-com-SATPCIEXADAP-6-Inch-Express-Adapter/dp/B007Y91B80