one question regarding pcle usb riser.
Sorry for dumb question, but i see so many different information. few days ago i saw, that becouse of the riser, which got burnet out, a few GPU get also burnt out.
so, i will like if you can suggest me, which riser to take? what is the normal price for them? i will mine zcash on 1070. i see so much different prices, for on the first look the same riser. Please share with me, what is good, that i will not get any problems with so fire.
I sell PCIe risers so let me pitch in. I've sold thousands of risers and tested several different versions, vendors, and types.
It is possible for you to have a bad riser but usually it doesn't burn up GPUs. Usually, if someone has burned up GPUs there are other issues with the power supply. For example, they are connected improperly, run too many risers on one power cable, or insert the connector boards/cables improperly. I had a customer complain that my risers caused two of his GPUs to burn up. I asked him to take photos and look at the 1x card that plugs into the motherboard. After taking the photos he admitted that he realized he installed the 1x card improperly.
It is possible if you get old risers that they could burn out with high power usage. The narrow risers (or older version 1, 2, 3) typically don't have enough capacitors on them. They can't handle high power.
Version 6 risers pretty much all have 3 capacitors on them. MOST people selling risers now days should be selling at least version 6. There is a version 6 with a voltage regulator but you'll have to pay extra for that.
Green version 6 are what we sell the most of. I am using them in my own rigs. They work very well. I try not to connect more than one riser per SATA connection. 2 at most.
There is also a blue version 6 and 7 that has a 6 pin PCIE power connector. These have an extra capacitor (4th capacitor). That means they handle high power usage better. There are also a few other minor improvements to the blue version 6/7 riser. I call them "server quality" risers.
Red version 7 and Green version 7 also appear stable. I'm running both to test on one of my rigs.
You can also test your risers by simply using touch. Feel the power cables and make sure they aren't getting too hot to the touch. There are also infrared thermometers you can get for $25-$40. You can find them at home improvement stores, cooking stores, and online at Amazon.
HEAT is a bad sign. If the power cable is getting too hot you have problems.
