A system in which he who can afford to sit the longest on their pile of money wins.  A system that resembles a bunch of hens sitting on eggs rather than the exchange of goods and services and economic growth through production and investment.  A system in which if a person was able to take a time machine into the future they would have become richer simply through the 'virtue of saving'.

Except for wall installations, monster cable is the way to go always.

Tripplemining is spamming him with an email adress stolen from slush.  Pretty low.

Thanks Grue. That's not exactly the screenshot I wanted, but since I saw the Registered Users counter bump up, I'll still pay. The BTC are on their way!

It's called market segmentation.
For workstation, BOTH, nvidia and amd does this. They both cripple openGL performance on their consumer desktop drivers.

That is why I'm saying openCL is a gamechanger. It allows full computing power for desktop cards and threatens to destroy the workstation market.
There is a reason why nvidia is hesitant to embrace OpenCL v1.1. They want to be able to control and cripple desktop cards and keep the high profit workstation market alive.
On the other fence, AMD sees OpenCL as an opportunity to outclass Intel. So they fully embrace OpenCL.
It's politics. 

You have this wrong in my opinion.
All nvidia does is make non-crippled drivers for workstation cards for workstation usage. And they add a little bit more ram. All of this supposedly justifies 20 000 $ per system...
A better way to look at it is to say that workstation performs normally, while regular consumer desktop graphics are phenomenally slow due to purposely crippled drivers.

But with the introduction of OpenCL, this is about to change. Consumer desktop cards are not crippled for OpenCL. And that is why you will see a single HD 5970 rape entire Tesla systems made of multiple tesla cards.

Which does not guarantee that they will work fine in x1 slots. Maybe the cards do not like x1 slots or the slots on the motherboard are damaged/buggy?

If they do, then it means that the problem appears only when there are at least 3 cards plugged in, which may indicate a power problem (either the PSU or the motherboard).

Can you try using just the cards in the x1 slots?

If they work normally, measure the voltage on the PCI-E slot pins that provide power to the cards and also measure the voltage that is comingfrom the PSU to the cards trough the PCI-E power connectors.

Maybe it's one or both of this:
1. The motherboard cannot supply enough power to the cards (each card can draw up to 75W from the PCI-E slot), so if the traces on the motherboard are too narrow there might be a too big voltage drop.
2. The power supply cannot provide enough power.

Since the problem exists even when OP is not mining and n both OSs, this most likely is a hardware problem.

Can you try to connect the card without the extender? Or use that card on another computer?

You pay a price premium but you get a (for all practical purposes) everlasting PSU with the best possible components, japanese solid capacitors, 99.9% pure oxide-free copper coils, ferrite chokes etc.

This is Korea. There is an embargo here on computers and parts from overseas as Samsung prefers not to have competition. This means that Samsung products are low quality, normal cost, but anything high quality is obscene. My iPhone was $1,000.


The embargo exists, and it's the reason why DELL and other manufacturers refuse to ship to Korea-- but you can still get away with sending parts. It's one of those barely enforced laws.