They weren't out of fab until late December according to one of his other posts. So it looks like their schedule slipped.

Update, #4 finally took a dump and got marked dead, after about 50 hours of hashing. Give or take, I can't remember exactly. Restarted it and so far so good. No HW errors when it died, just died.

It's back to hashing happy. It seems to remain lower than the others for output. Might lower its overclock if it happens again.

I don't have one I would absolutely say blows the others away. PowerColor AXR9 and Sapphire both are doing a bangup job, and it looks like the VisionTek's are as well.  The cooling design of the Sapphire and PowerColor appears superior to the Visiontek's (the copper piping), but all of them are doing fine right now. Picture:



0 - Sapphire Dual-X
1,3,4 - Visiontek
2 - PowerColor

Physically the layout is: 2,0,4,3,1

I would buy them all again. I had a chance to get some more today for MSRP but couldn't convert the BTC->AMZ in time.

Dang, I'd love to be mining on that chain ...

Despite my hesitation I wanted to order, but before the books 'closed' the photo and description changed, and it said no more in stock. So I couldn't even when I wanted to

While I totally get the valor in asking large pools to step down a bit, it's sortof like entering your work sedan in a race against supercars and asking them to go easy on  you. It's everyone for themselves out here, and the asian side of the water always has more power, and they'll do what they want with it.

In other news, I could setup a VPS in Tokyo ... lol

It's hard to get on track when there is 0 info coming from the company. Until then, the monkeys are in the driver's seat.

Go look at giftcoin or starcoin or one of the many other coins.. there's issues out there. Tag is the only one I've seen "fix itself".

This is the only coin I've seen with so many orphans and still be a live, usable, coin.

They still haven't responded, and no updates.

I actually tried to place my order the day preorder was going to close, and during the transaction it said 'no more in stock'. I took that as fate's way of saying I wouldn't be in on the preorder.. lol

I just logged in to see the back to back to back orphan run. That's not fun to see.

I like how lately tag has been getting more consistant attention and it's being mined a little bit more than usual, and the price has steadily been above .0023, and I also like how in these instances the chain has worked itself out--but I'm wondering if it needs some fine tuning to be able to handle the swings in hashpower.

Anyone have some good hash rates to share from R9 270 cards?

Awesome, thanks man.

dgc DHWWHx9Ac95p3izn3uKW1LZr5MzMw9XPPX
doge DLnN7ALrrfpaV7L9bXVHYMrsNcJQo3r7Dt

They supposedly have the chips in their hands as of this weekend don't they? Would take them another 2-3 weeks of testing to make sure it's working.

So end of the month or early Feb before shipping.

Or next year, one of the two.

Almost looks like the cat5 cable goes in that black plug above it, and that there's a cover off.

With my 5 card test unit, I really like the power savings (almost 100w) over my other rigs, and it's providing 200-400kh more on average as well. With the Prolimatech aftermarket coolers, I bet the power savings would be another 20-60 watts. For the watt/hash, these are surprising results, but the variance is noticeable, and I'm not sure how "Stable" the system is yet. I've had it running like this for a few hours. Will know for sure when I wake up in the morning.

Of the 5 I have running right now, 2 of them at any given time are at 490-492, with 2 more varying 485-492, and one of them perpetually 480-485. Varies constantly. Power usage remains about the same, 975-985 watts, which puts it in the 175-180w range for each. When i go back downstairs to the test rack I'll glance at the meter again.

The Sapphire and Powercolor have been the most rock-solid stable on an individual basis, with the visiontek doing a great job speed-wise but with some slight variance. I'd order them again in a heartbeat though for the right price.

I think I'm just pushing the motherboard/riser combo to the limit. No cooling issues so far. I have USB risers coming this week, I'll see if that makes a difference. FWIW, all 5 are using the same gpu settings, I'll share below.


Congrats! Hope it works well for you, let me know if I can help.


Depends on the rack and rig. I use a mix of Seasonic 850 Gold Plus and 850 Platinum, Corsair 1050HX & AX series, Thermaltake TPG-1050M. I've had no issues with these guys yet. Guess I've had good luck so far. I also have 1 Raidmax RX-1000AE which just died after 3 months of use. Lifetime warranty on it so I'll talk to them. I got it for $79 so I can't complain much.


For the 270X test rig, it's pretty much the same as all of my others, usually the only difference is PSU. Here it is:

ASRock 970 EX4
2gb DDR ram (Kingston HyperX or Corsair XMMS, whichever is cheaper)
AMD Sempron 145
ADATA 3.0 8gb USB stick

PSU: Thermaltake TPG-1050M

1x PowerColor AXR9 270X 2gb
1x Sapphire Dual-X R9 270X 2gb
3x VisionTek R9 270X 2gb

Software: BAMT 1.2, Cgminer 3.7.2

GPU Settings:

"intensity" : "20,20,20,20,20",
"worksize" : "256",
"kernel" : "scrypt",
"thread-concurrency" : "24000,24000,24000,24000,24000",
"api-port" : "4028",
"expiry" : "120",
"gpu-engine" : "1145",
"gpu-memclock" : "1500",
"gpu-powertune" : "20,20,20,20,20,20",
"temp-overheat":"87",
"temp-target":"60",
"log" : "5",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "60",
"scrypt" : true,
"shares" : "0",
"kernel-path" : "/usr/local/bin"

You could ignore the redundant intensity/powertune/tc settings, I just left that from when I was doing individual tuning.


Yes indeed! I saw the challenge he put out, I love it. Oh wait, what's this.. I'm ahead? Not for long I bet lol..


No and No. There's stuff I'd love to buy from Newegg right now.. wish I knew a way to go BTC-> Newegg as well. LMK..

As to Amazon's, I talked to a lady the other day from amazon, she said when it shows that it means it's an item they don't often carry high stock on, so when you place your order, they will then order the item from the distributor. My gut feeling was to not even try since the distributor was probably bone dry. I could be wrong, but I just didn't want to tie money up.

As it is I have money tied up with a TOXIC order which is likely never to be fulfilled. At this point I just want to sell the card for a profit to buy more 270x's, but I'll probably just end up cancelling the order if it doesn't ship this week.

The good news is I think a fresh shipment of some cards may be on its way as the factory seemed to have gotten some more 270's in stock..

I like slush's pool, pretty stable.

There's purported evidence that in the past, he intentionally forked the coin for profit, and then helped fix it later on. That's what I've heard at least.

I should've been in bed 2 hours ago, but just got my test 270X rig working. This is as bad as my car hobbies.

I have 5 of the 270X gpu's running on my ASRock 970 Extreme4. What I spent 90 minutes on was trying to get it to recognize more than 4 cards. What was happening was PCIE slot 4 was ignoring anything plugged in. I checked this across other known-good ASRock's I had sitting around, I also swapped out risers/etc, and narrowed it down to a motherboard issue. Finally what solved it was I had to jumper / short the slot (as seen in THIS link here).

Once I did that, the motherboard recognized all 5 GPUs.

I don't have time to tune the cards, but so far the max wattage I've seen being pulled is around 980w, which equates to 175w each gpu plus system power. This is about 70 less than my other setups, and there's a good 50w more I can save with aftermarket cooling stuff.

As to hashrate, my powercolor is still overclocked at 492. The other cards I have set to run on stock clocks (eng/mem 0/0) at 24000 TC, and they're getting 437 or so. They were doing 467 but settled down. One exception is the GPU in the jumpered slot, it kept dying out after a few minutes. Not sure if it's a power issue or the fact the slot is jumpered, I'll figure that out tomorrow. I had to drop TC to 8192 along with intensity and powertuning, so it's running at 276 right now just to keep it alive.

Something tells me the visiontek cards aren't going to do as well as the powercolor, and the sapphire will do a smidge better than the visiontek. We'll see..

Irrelevant honestly. I've read those threads. I run GPUs which draw 350-400w per gpu on unpowered risers, some of them are 60cm long, all without issue. So do other folks with large farms in china and elsewhere.

The REAL problem is when your PCIE power rail is failing to produce enough current for the GPU's draw, so then it attempts to pull more from the PCIe socket. If the cables have varying quality, especially on the solder joints, you'll end up with the cable's 12v line acting like a fuse. If the motherboard is damaged from this, then the PSU is/was failing (likely the 12v rail), and/or it wasn't properly spec'd for the current draw.

Folks can't just buy a PSU that says X watts and presume it'll work. The important detail is the 12v rail *constant current drain* raiting. I have some which are rated for 27-29amps per GPU, and some which are 35amps per GPU. I match the appropriate rail with the appropriate GPU depending on current draw.

Coincidentally, it doesn't matter if these or any products "back feed"--that doesn't even make sense. DC flows in one direction, and there are plenty of diodes on GPU PCB's to prevent such a situation. You'd fry the tracer on the PCB before you fried a cable if there was a backflow issue. The tracer is thinner than the PCI riser cable. This is all supported by many of the photos, where the riser burns up at the slot--the current is drawing/trying to draw from the slot--likely, again, from a PSU lacking the ability to provide current. If it were a back-flow issue, the tracers would poof.

Not trying to hijack the OP's thread, but just provide clarity on a wives-tale.