This is just incredibly frustrating and disappointing if it turns out this is all the speed I can pull out of this blade.



I don't understand why the hash rates are so different. Or why my efficiency is so low.

I have tried stratum proxy on 5 different computers both wired and wireless and they all slow the miner down to a crawl. Through the proxy the pool was reporting my blade as doing 600mh/s. It works better connecting directly to bitminter than it does connecting through a proxy.

I'm wide open for advise.

"intensity" : "19,19",
"vectors" : "1,1",
"worksize" : "256,256",
"kernel" : "scrypt",
"lookup-gap" : "2,2",
"shaders" : "0,0,0",
"gpu-fan" : "0-95,0-95",
"gpu-powertune" : "15,15",
"gpu-memdiff" : "0,0",
"temp-cutoff" : "95,95",
"temp-overheat" : "85,85",
"temp-target" : "72,72",
"gpu-engine" : "1175,1175",
"gpu-memclock" : "1575,1575",
"gpu-vddc" : "1.125,1.125",
"auto-fan" : true,
"api-port" : "4028",
"expiry" : "10",
"failover-only" : true,
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "1",
"hotplug" : "5",
"log" : "1",
"no-pool-disable" : true,
"queue" : "0",
"scan-time" : "10",
"scrypt" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"
}

650-690kh/s

basically same cards.

exactly

I have it running on bitminter and it reads over 10gh/s where on the config page of the blade it says 1.5gh/s
I find that odd, but as long as bitminter sees it as the higher speed i'm fine with it. lol

Ok, now bitminter is saying I'm doing 6.5gh/s, odd.

I got the stratum proxy working but there are soo many rejects. My efficiency sux, never gets above 30%

Still running slow and efficiency is horrible.

I tried a stratum proxy but it wouldn't even connect to it properly, I left it for 5 minutes and it received 8 and accepted 0

Yea, I had it hooked up to the red wires instead of the yellow. I'm a dunce. lol

/facepalm

I got it now. ty

Its hashing but is slow, does it take awhile for these to ramp up?

I'm wondering if its my jerry rig. I just wanted to get it started and make sure everything works. I'm still waiting on the power plug.

The PSU is fine, its an Ultra 500w that ive been using for my 3d printer for about 6 months.

I got my blade in today and it has given me nothing but a headache.

First it didn't come with a power plug(stuck in customs)

So I did what I always do and I Jerry Rigged it. I used a couple heavy duty jumper wires with aligator clips. This got it so I could get to the config page. I set up my pool(not stratum) and it will not start mining. I tried stratum proxy and even tried 3 other pools. It won't start. It shows a bunch of x's under chips and 0mh/s

I'm not sure what I'm doing wrong, or could it be not getting enough power?

Can anyone tell what I'm doing wrong?

Its back up.

lost connection -.-  guess its back to mining ltc till its back up.

I just recently found a supplier of wildly compatible GPU fans. They fit almost any gpu with a fan that is 85mm in diameter, which includes most 7970 and 7950s which is the most widely used GPUs for mining now adays.

I have been looking for a supplier for a while as I have a GPU fan fail on me about once a month.

I imagine other ppl are seeing fan failures also.

If there is enough interest I will buy a bulk lot and list them on bitmit. The price should be around $20 each with free shipping inside of the US.

I'm also open to do fan repairs. You ship to me and provide a label for me to ship back and pay a $20 labor charge plus buy the fans.

If you would be interested post a reply or PM me. I can take preorders(I need to sell atleast 20 before making an order). I would like to make a large order to save on shipping and get a discount on the fans, then I can pass the savings on to you, the customer.  

Try the firmware in this thread  https://bitcointalk.org/index.php?topic=200777.0, it makes my 7970s incredible stable(uptime at close to a week so far) at 730kh/s. I havnt tried higher clocks than what he recomends, but he showed that he got 800kh/s out of some 7970s but they weren't completely stable. I'm thinking somewhere in between is a sweet spot with like 760-780kh/s

I have 3x sapphire 7950s and 2x sapphire 7970s and a gigabyte 7970. All 7970s have same bios regardless of brand, it nets me the most hash speed and unlocks the voltage.

But I would expect the sapphires, either 7950 or 7970 to have nearly the same heatsink, they look almost identical except for the plastic shroud is a bit different.

At first I thought maybe it was because the 7970s run with -g 2 -i 13 while the 7950s run -g1 -i 19 but I changed the 7950s to the -g 2 -i 13 and tweaked the hell out of it trying to get back up to a normal hash speed. It maxed out at 550kh/s each card instead of 680kh/s and ran just as hot.

Has anyone tried flashing the 7950s with 7970 firmware? Maybe if I used my sapphire 7970 firmware on them that works so well on most 7970s it would be cooler and hash just as fast.

Yes

I agree 100% with this. I built a rig with 3x xfx 7950s, barring extraordinary measures they are hard to get under 80c. Mine only do 620kh/s too. I haven't tried other firmwares but may in the future. Does anyone know which xfx firmware would unlock the voltage?

I currently have 3 rigs. Each has 3 cards in each. 2 rigs have 7950s and 2 rigs have 7970s.

The 7950s run on average between 74c-84c depending on the brand, sapphire runs cooler than XFX.

But my 7970s in the same environment do between 62c-67c and rarely if ever breach the 70c mark.

The sapphires (7950s & 7970s) are undervolted. The XFX cards are voltage locked so run hotter.

If I had known the 7970s ran so much cooler I would have bought them from the beginning instead of buying 7950s.

I just find it odd that a card that puts out so much more hash power can put out so much less heat. If I have the 7950 rigs in my room they try to kill me with heat. The 7970 rig is barley noticeable in my room.

Are other people seeing the same temperature difference between similar versions of the cards?

I have a borked sapphire, thank god its under warranty, that bsod on 3 dif rigs. One it bsod at start up, the 2nd one as soon as it starts mining, and all of them bsod when reinstalling drivers. These are the symptoms of a borked card. test in multiple systems and you can be sure.

That thing with long hair that bitches alot and goes crazy for a week every month.

Yay  

I hope one of those is mine