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Topic: [ANN][TAG] TAGMining.Com is now the official pool of Tagcoin! - page 14. (Read 45656 times)

hero member
Activity: 616
Merit: 500
Vesper. I'm an Aussie but strictly a Ford man.  Grin  But I know the cars you're talking about.  The Monaro got a new American style nose and the steering wheel moved about 4 foot to the left and became a Pontiac.  Same with the Commodore except that became a Chev.

Yeah the 'new' GTO was truly my love car. Got one brand new right off the boat with 0.25miles on the dash, drove it for a year, then took it apart down to the frame and started customizing it. I worked with several car part companies in Australia to get aftermarket parts developed, and tested out a lot of stuff nobody here stateside had ever seen before. Helped get the Harrop supercharger designed for the car and everything.

I had planned to keep the car for life, even bought spare interior parts, carpet, etc. Never had a chance to finish out my goal though, while driving to work one day a lorry hopped 3 lanes over and ran over the car, throwing me across the highway like a pinball =(

I drive the Commodore now, the Pontiac G8 GT. I got it before they canned it and turned it into a Chevy import (eww..)

Update on the cards: Sure enough it appears my reboot issue on the 5x rig was simply overheating of the cards due to the PSU. It's been stable ever since redirecting the hot PSU air.
sr. member
Activity: 350
Merit: 250
Vesper. I'm an Aussie but strictly a Ford man.  Grin  But I know the cars you're talking about.  The Monaro got a new American style nose and the steering wheel moved about 4 foot to the left and became a Pontiac.  Same with the Commodore except that became a Chev.
hero member
Activity: 616
Merit: 500
Dabs,

You are being overly-optimist in thinking that you can match Vesper's 492Kh/s... Vesper is a genius at this stuff... I would calculate my numbers on 450Kh/s which is what John is reporting with his cards... then hope to better...

Just my 2TAG...

You guys are too kind lol =P

I always base my purchasing/planning on safe numbers, usually average of what most folks are getting. This way I know the system "will likely make X hash" regardless of anything. Then I push the system to the bleeding edge and let it scream lol.

It's like I do with anything else in my life, bikes, cars, etc. I took my Monaro and pushed it to the edge lol. I'll do the same with my Commodore eventually.

The Aussies will recognize those cars.
hero member
Activity: 616
Merit: 500
I don't have any personal experience with them but others have said good things. I have 5 on the way this week to test.

Having issues with my rig with the ASUS units in them, though I believe it's the rig and not the GPUs. It was having issues before I put them in there. Keeps locking up.

Update, appears to be heat related. Forgot the Thermaltake PSU sits right under one of the GPUs so it's getting hot air from the PSU. System is detecting overheating and shutting down. Put a cardboard tube over part of the PSU to direct the heat elsewhere as a quick fix, and lowered the GPU's settings to calm it down some. Half the power but hopefully won't cause issues overnight.
legendary
Activity: 3416
Merit: 1912
The Concierge of Crypto
Ok. Should I save 75 bucks and grab 5 270-non-x Sapphires? I'm not getting the Asus ones, wrong price for me.
hero member
Activity: 616
Merit: 500
Grabbed them from a retailer on ebay. Am investigating being a distributor stateside. If you want a link to them PM me, the prices were about $20ish.

To reach the 490 zone, I'd say just try the settings which have worked for me: 24000TC, Power/Intensity 20, 1145 Engine, 1500 memory. For safe/long-term usage I'd set the engine to 0 (stock GPU clock). Puts you in the 450-470 range usually.
legendary
Activity: 3416
Merit: 1912
The Concierge of Crypto
Okay, I found a 270 (no X) for 15 USD less.

Quote
Sapphire R9-270 Dual-X OC 2GB DDR5 Boost approx 195 USD
Sapphire R9-270X 2GB DDR5 DualX OC Boost Full approx 210 USD
ASUS R9 270X DC2 TOP 2G 256bit approx 295 USD

I'm rounding the approx USD equivalent to nearest 5.
legendary
Activity: 3416
Merit: 1912
The Concierge of Crypto
Test System: (same as always)

* ASRock 970 EX4, Sempron 145, 2GB HyperX
* Thermaltake TPG-1050M
* BAMT 1.2
* Cgminer 3.7.2
* USB Risers

I think I'm getting the exact same rig, motherboard, cpu, even the ram is Kingston (that shouldn't matter.) What USB Risers did you get? Some dude over in the litecoin forum uses non-powered risers for his 6 GPU rigs. The GPUs are all 7950s.

Mark hasn't said anything about his risers, and the Taiwan guy has new batches of them at a good price.

And, I'm getting the Sapphires.

Anything I should do to make them run at 490+ kh/s when I get them? heheh.

*edit1* My PSU will be the Seasonic X-1050 1050W 80Plus Gold. Does the RAM matter? It seems I can get away with the cheapest Kingston DDR3 1333 RAM.
hero member
Activity: 616
Merit: 500
Something to add to all of my 270X observations: Only the Sapphire Dual-X 270X provided heatsink coverage for all of its memory chips. This is likely important for long term usage with the OEM cooler.

Neither the Powercolor base model, the VisionTeks nor the Asus TOP providing cooling for all the memory chips. In fact, most just receive the air being blown off of the GPU cooling fins.

I plan to put Prolimatechs on the 270x units, except the ASUS model, though I will put heatsinks on its memory chips.
legendary
Activity: 1582
Merit: 1002
HODL for life.
Good stuff Vesper.  I'm going to send you a PM when I get back from dinner... I got an idea for you.


FYI... big time fork.  We are ahead of the rest of the pools, so stick to it and mine.  DIFFICULTY IS 10 RIGHT NOW!

I'll be back in a little bit.

-Fuse
hero member
Activity: 616
Merit: 500
Asus 270X TOP

Finally getting around to working on these Asus 270X cards. Darn things won't hash over 380 out of the box. I saw that by applying the new BIOS they would work better. The new BIOS is on the ASUS support page, I believe it's dated 10 Dec 2013 or thereabouts at the time of this writing. It's an .EXE file which should force-flash 270, 270X and 270 TOP cards from ASUS.

Popped it in the BAMT rig.. sure enough, started hashing faster. Going to tune these and provide some results.

Updates:

The ASUS model seems to be responding to my previous settings as all the others did, once I reflashed it. It's maintaining 492/493 without a hitch. However, it's a bit tricky. Some work this way, and others die shortly after. Seems like a combination of the GPU being sensitive to spikes in temperature, and the memory.

Test System: (same as always)

* ASRock 970 EX4, Sempron 145, 2GB HyperX
* Thermaltake TPG-1050M
* BAMT 1.2
* Cgminer 3.7.2
* USB Risers

With TC: 24000, Powertune: 20, here's what I'm getting:

Engine / Memory / Intensity / KHash
1120 / 1500 / 18 / 450kh
1120 / 1500 / 20 / 483kh
1145 / 1500 / 20 / 492kh

Power usage is the same as others, 170-175w per GPU.

However I've noticed that sometimes the cards simply can't take these settings for long, and will die out. Here's some more reliable settings, with more settings to follow:

Engine / Memory / Intensity / Powertune / Hashrate
1080 / 1400 / 17 / 18 / 400kh
1050 / 1400 / 17 / 18 / 425kh
1050 / 1400/ 18 / 20 / 437kh
1050 / 1400 / 20 / 18 / 452kh

(last updated 2014-10-26 0035)

With that being said, I would definitely recommend these for mining. I got mine for $180/ea via Amazon. There's a few left right now. For the price they're not bad, considering you have to update the BIOS (which isn't a pain, but is annoying). I still like "care free and guaranteed", but these are great.

One of the NEATEST things about this card versus the other 270X cards: The TOP cooler is awesome. It's the quietest OEM cooler I've run across with the 270X series, its' noise level is close to my Prolimatech's. It also does a bangup job at keeping the cards cool, not quite as well as the Prolimatech, but for a stock cooler, this is truly amazing. If you want essentially silent performance from a mining rig without swapping GPU coolers, this is the card to get. If I could, I would swap my other 270's for this card.

The ONLY drawback is you HAVE to force-flash the BIOS of each GPU to reach appropriate speeds.

ASUS R9270X-DC2T-2GD5 Summary:

* 492+ KH speeds achieved BUT 452-470 is a more likely stable speed: faster clock is not always better
* 175w Power Usage
* Somewhat quieter Cooling than other setups
* Longer PCB design than other 270's (same length as 280 models)
* PCIE Power Ports face up with the clip facing the backside (very nice), other 270's face rearward with clip facing the cooler (makes it hard to grasp)

Quirks:

* GPU ignores commanded fan speed after a short period, and takes over
* Appears to be an internal thermal shutdown, somewhere in the upper 80's (at least on my cards)
* They don't like intensity set beyond 18, without getting weird

Comments/feedback welcome.
legendary
Activity: 3416
Merit: 1912
The Concierge of Crypto
Another thing, for you Fuse, don't quit until you're making 2x to 3x on mining, what you take home from your job. I'll explain tomorrow if you don't see why. Just a suggestion.
legendary
Activity: 3416
Merit: 1912
The Concierge of Crypto
I get that, but the store where I'm buying don't have the non-X versions. (They have a 290.)

I've started by getting veggie crates. 2 cost me 230 PHP or about 2.50 USD each crate. The wife approves, as long as she gets some coins to do her shopping.

If I'm missing something from the list above, let me know. Btw, BAMT got an update to 1.3 using sgminer, on the litecointalk forums.
legendary
Activity: 1582
Merit: 1002
HODL for life.
Dabs, look at the non X version of the 270s.  Same performance at ~450kh, and about $20-$40 on average.  Still waiting on my 10 non-X cards to come in, but everything I'm reading points me to this.  Even the non-x 280s and 290s give similar results to the X version.  I suppose there is some frame rate increases in gaming or something silly, but mining is mining on all these cards.

-Fuse
legendary
Activity: 3416
Merit: 1912
The Concierge of Crypto
Anything above 400 kh/s is good, considering its half the power consumption and half the price. I will take this as a challenge. I don't see how I can't get similar numbers with identical motherboards and GPUs.

john, you don't need to wait for a sync to send your own coins.
sr. member
Activity: 350
Merit: 250
Anyone who is holding DOGE.. There is a massive pump on at the moment. It has nearly doubled in price in the last 6 hours.  Damm, damm, damm, I haven't updated my doge wallet for a few days and it is taking forever.. to sync.  Knowing my luck, my doge will hit cryptsy just in time for the dump.  Angry  I mined about 3.5 million of them when it first appeared, still have about 1 million left.  Serious money if I can catch the wave.
sr. member
Activity: 350
Merit: 250
Dabs.  I've had a 270x running non stop for a week at 461kh/s and that is with quite mild settings whilst also powering the monitor when necessary.  I could easily squeeze another 10-20kh/s out of it but frankly I've been too busy to screw around with it.  When you're fine tuning you have to be around 24/7 to reset/readjust the timings when it drops out.  

I know you are going to ask  Grin so it's running at I 20, TC 12404, 1100/1460.  Consider these numbers a baseline.  It will also run on TC 24000 but you only gain about 1kh/s so I stick with 12404 which is what the bin file threw up when I ran cgminer without any preconfigured parameters.
sr. member
Activity: 672
Merit: 250
Dabs,

You are being overly-optimist in thinking that you can match Vesper's 492Kh/s... Vesper is a genius at this stuff... I would calculate my numbers on 450Kh/s which is what John is reporting with his cards... then hope to better...

Just my 2TAG...
legendary
Activity: 3416
Merit: 1912
The Concierge of Crypto
And here are my calculations:

1. Rig 1 = 270X * 5, total cost = 1500 USD approx.
2. Rig 2 = 280X * 3, total cost = 1700 USD approx.
3. Rig 3 = 280X * 5, total cost = 2500 USD approx.

They all take the same amount of time to break even given the power consumption and hash rate, except #2 costs more (only 3 GPUs are used.)

Here is how Rig 1 looks like itemised:

Code:
psu     Sea 1050w              220
mb      asrock 970 extreme4    110
cpu     amd sempron 145         40
powered risers x 5             100
ram     Kingston 2GB            30
GPUs    270x dual x 5         1000
                              1500

I forgot about the USB flash drive, but they're cheap enough around here, around 10 USD for 8 GB.

Just because it's a thousand dollars less, it's quieter, cooler, and less power hungry (need only 1 PSU), I think I'll go with the 270X rig. Both 1 and 3 are so close, I think it will only make a difference if I have more than a dozen of them.

*edit1* the 270X are cheaper to run, and it makes a small difference because my power costs 0.35 USD per kilowatt hour. 2 270X rigs are cheaper than 1 280X rig.

*edit2* the 270X rigs are cheaper watts per hash, but more expensive hash per dollar. I'm trying to calculate which is better.
*edit3* I mixed up, I meant more hash per dollar so it's cheaper. And then less watts per hash. So, it seems the 270X rigs are better.
*edit4* I'm missing something, I'm trying to figure out which is more efficient, ugh. But it doesn't matter, since it's cheaper to buy, and cheaper to run. What's the formula for efficiency? I'm done trying to compute for now, I'm calling up the store to see if they have stock of the stuff.
legendary
Activity: 3416
Merit: 1912
The Concierge of Crypto
If you look through the past 10 pages you should find some info. I'm using 270X right now, haven't tried 270 yet although I'm about to purchase 5 MSI 270's.

Ok, did that, found your posts. hehe.. Allow me to show you this chart:

N   H   W   SW   TW   WPH
1   492   175   75   250   0.508130081
2   984   350   75   425   0.431910569
3   1476   525   75   600   0.406504065
4   1968   700   75   775   0.393800813
5   2460   875   75   950   0.386178862

What that means is number of 270X, hashrate, watts of the GPUs, watts of the system (55w at idle, I think you said 75w is a good buffer), total watts, and watts per hash (lower means better.) I still have to plug in the cost of the cards.

So one rig of 5 270X can do 2460 KH/S, to achieve similar results with 280X I would only need 3 Toxics at 800 KH/S. But 3 280X Toxics will eat up 1150 Watts on the same motherboard.

However, 5 270X Dual-X will only cost me 1050 USD, while 3 280X Toxics will cost me 1200 USD.

What I'm not sure of is, if I get 5 or 6 of the 280X, will the savings in rigs (motherboard, cpu, ram, psu, risers) beat the 270X.

If I can get 6 280X Toxics to work at 800 kh/s each, I should get 4800 kh/s total, 2200 total watts, and cost me 2400 USD just for the GPUs.

What I need to do now is price the rig and corresponding power supplies needed.
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