Bitcoin Forum

Posting this result because i see people selling configs.  Put you out of biz!

So, for all the 280x owners out there....

Cards: 4 x MSI GAMING 280x (http://www.newegg.com/Product/Product.aspx?Item=N82E16814127759)  LOCKED VOLTS
Board: ASUS M5A99FX PRO R2.0  (3 up on powered risers, 1 down in board)
PSU: SilverStone 1500w "Strider" series.
Ram: 8GB

Card Settings: Stock volts  / Clocks: 1168 / 1500
Bios:
http://i43.tinypic.com/zodji8.jpg

Software Platform: Win7 x64 / Cat. 13.4s + 2.9 APP SDK / SGMiner 4.0.0 + Optimized .bin 8192 + CGWatcher.  I am not using the optimized .cl file.

SGMiner code:
A note about the config and screenshot: You must include --lookup-gap 2 / -w 256 for the optimized bin to work.  The TC must also match as well in your config (or else sgminer will not use the optimized one). The WUs are not stabilized but they will even out to apx 93% of the aggregate hashrate per card.

YMWV on the clockrates.  These MSI cards are volt-locked.

Power: 1365w from the wall (on a 1500w PSU).  Minus ~140w idle from the system,  ~1300 for the 4 cards = 325w per card.

Screencap:
http://i42.tinypic.com/p9gkj.jpg

is it these cards you've got?

R9280XGAMING-3G

They're great hash rates for a 280x!

Correct => MSI R9 280X GAMING 3G (http://www.newegg.com/Product/Product.aspx?Item=N82E16814127759)

Gonna add that link + bios information to the OP.

wow dude that's impressive for 280x especially without having to go crazy on the memclock.  did you try modding the voltage in the bios with vbe7?  although you probably wouldn't want to, you definitely found the sweet spot.  dude you just made my day  ;D

do you get the same results with cgminer as sgminer?

CGMiner + the optimized bin would not go over 760-770khs on any of the 4 cards.   At this point, i am quite convinced that SGMiner scales in performance far more efficiently with increased clock rates than with CGMiner.  It was the same story with my 13 7950s.  i went from ~9.5mhs to ~10.4mhs with SGMiner + optimized 24k bin over CGMiner 2.11.4 + optimized 24k bin.  I am not using the optimized .cl file either.

You could say i made my day too. ;-)
Cheers

Fantastic :D

Thanks!

nice hash rates /envy.  I have two of those cards, however they seem to start to lose hash at 1090/1500 (753kh)

I'm also using sgminer + 8192.bin

Which OS / driver + SDK combo?  Same bios rev as my cards?

win7 x64, 13-12 drivers.  I didn't think of checking the bios.  My cards are Elpida.  Yours?

Let me get back at ya

Any idea on the power pull of each of those cards?

Great setup!

i got 758hash with cgminer sapphire dualx

tried sg+bin, hashrate down to 710

picked up a X77 bios and flashed.  It seems that anything above 1090gpu and my hash rate goes down significantly

I am about to throw the killerwatt on it after this smartcoin launch, so i'll be updating this thread with those power numbers then.

think its random luck go above that

people say they run card 1.25v, that may not be wise for long term

For scrypt coins it's usually magic numbers.  1080-1500 for ex can be fast then one number in either direction is significant drop.

Gazza1, true that.

I'm guessing the OP got some nice Hynix cards or something :)

Samsung on the IC, did i get lucky?  ;D

Anywhoo, Smartcoin is still going so no power figures yet.

Can you please show us the hashrate after it has stabilized (not after 4 min)?

Thank You! ill probably experiment with it.

will try that today... got a 280x dc2 

4 min is long enough to stabilize.  My rigs take 10-20 or so seconds.  If your hashrates are going down after 4 minutes it's because your cards are throttling.

watt usage per card pls?

+1

Would also like to see the watt usage of your cards.
Would be interesting if they would still run stable at 1.084

My guess is the voltage is over 1.2.  Possibly 1.256.  I could be wrong.  My 7970s weren't stable over 1135 without going over 1.2vddc.

I haven't tried yet on my 280x's, I couldn't get it to build on Linux and I've been slackin

That's still fantastic though.  If one can keep the cards cool I'm definitely going to do it, at least while it's cold.  Summer I'll probably have to volt back down to 1.019 with 1050/1500 @ 740's which is still freakin awesome given the tremendous temp/power drop.

This has me seriously considering to get those cards for my next rigs.  I was going to get 290s.  Now I'm uncertain.  I wonder what 290s can run now with sgminer given the right tweaking.  :D

Which 280x's are these? I have 4x Sapphire dual-x. I can't seem to get much lower than 1.130 (Trixx) without the drivers crashing (@ 1050/1500). Don't know if this would work better with a BIOS undervolt?

In regards to the wattage:  Very high.  

Being locked at 1.2v (thanks MSI  ::)), Killer-watt indicated the entire rig in that screenshot was pulling 1365w from the wall (on a 1500w PSU).  Minus the ~140w idle from the system, that's good for ~1300 for the 4 cards = 325-330w per card.  Certainly not optimal, and missing the 3:1 khs/watt mark i strive for.  It's big khs, but also big power.  They are basically mini-290s.

Will do more testing later, but being volt-locked maintaining 3:1 khs/watt will be tough.  I would be very, very careful attempting vbe7 bios modding with these R9 cards.  I know they are basically 7xxx architecture, but there's too many brick reports to just plow ahead and mod/flash.

Adding the power quotes to the OP for future reference.

Ouch. Our 280x rigs are undervolted, and pull 1250W at the wall for 5 cards! We're sitting at under 230W/GPU, but we're only getting ~725KHs/GPU.

And yes, all of those R9 280x were undervolted with VBE7.

EDIT: A 100KH/s gain at the expense of adding 100W is still more profitable, but only slightly. You're talking about about $30 of increased revenue over the course of a month, with only about $10-20 of that being profit (after electric costs). Add the costs of buying larger PSUs, and the fact that you won't be able to undervolt much at those high clock speeds, and the increased temps (80C vs 60C), and you might want to reconsider.

^^ Which make/model R9 280x?

I am not entirely sure what i'm gonna do with these.  Prolly keep em running.

Perhaps i will keep telling myself they are 290s in disguise then the power draw doesn't look so bad.  ;D

The funny thing is that they kept scaling with more core with the memory @ 1500.  They weren't stable, but @ 1210 core / 1500 ram I was cleanly over 840khs on all 4.

Gigabyte 280x WF3. 1040/1500 = ~725KH/s, and 1.01V = >230W/GPU.

Couldn't ever get this to work any better for me. I get around 725 kh/s on CGMiner. SGMiner with/without the optimized bin only gave me about 700 at most.

Sapphire R9 280X Dual-X

Gah, figures.  Good ole Gigabyte WF3s.  Oh well.

I see these cards are about 80C temperature, what is VRM temperature on these cards running 820 kh/s?

I've been able to pull similar KH's out of my unlocked sapphires, but the temps are simply too hot for me to justify the increase in KH's.

Just my two cents.

The VRMs are apx 82-87c as a range across the cards.  Kinda warm.  Am watching them.


Yep.  In the summer I am gonna need to get creative or just downclock.  

280x toxic is even better

180/1500 = 750kh/s 1.000v


@atp1916

820 kh/s at 1.25v is not worth it mate, better at 750 but with 1.000-1050v = -80w from the wall

i have 2  sapphire vapor X R9 280x
both @ about 730 kh

1050/1500 @1,1 v

cgminer --scrypt -I 13 -g 2 -w 256 --shaders 2048 --thread-concurrency 8192 --gpu-engine 1050 --gpu-memclock 1500 --gpu-vddc 1.100 --gpu-fan 90 --gpu-powertune 20 --lookup-gap 2 -o pool -u user -p x --failover-only -o pool -u user -p x

Where to find this optimized .bin file?

I found them in the reddit comments for sgminer. I'm not sure if these are the same ones OP is referring to.

http://www.reddit.com/r/litecoinmining/comments/1va8g2/ann_sgminer_400_release/ceqvjwn

Show us the hash rate.

I have just purchased 4 of the MSI Radeon R9 280X Gaming Edition cards along with the Silverstone strider 1500 watt PSU from Overclockers. Having read about how much power they consume and having spent so much money on the power supply I am very disappointed in my decision to purchase them.

Now I have two options I am considering, I either send them back and buy the 6 of the Sapphire Radeon R9 280X toxic which Amph suggested to buy. The reason I would buy 6 cards instead of 4 is because I have spent the money on the 1500 watt PSU so I may as well make use of it. It should be powerful enough to run 6 of the Sapphire Radeon R9 280X Toxic cards shouldn't it?

My other option is to keep the cards and just live with the higher power costs.

One thing to keep in mind my for my decision is that I can purchase my electricity at 7p a unit, which is half the price of what most people would be paying.

So guys which option should I choose?

I've just done the same as you purchased from overclockers today in fact except I bought 3 of them and a 1250w Seasonic. I wanted the Asus ideally as the Toxic runs so hot but the MSI was the best bet as nothing is available here in the UK for a reasonable price, they are stack at least £50 on the RRP and that all adds up when you're buying several cards. I'm going to stick with mine and see how it goes.

If your electric is that cheap i say keep MSI cards.  If you were paying US rates for elec i would definitely consider returning.  Also,  you will also not fit 6 280xs on a single 1500w unit unless you do some very serious undervolting.

Well you could run 5 cards on that power supply at least.

I take it there will be no way in the future to undervolt the MSI cards.

And alphacenturion, it seems its only the msi cards which are in stock in the whole of the uk. No luck finding any of the others anywhere else.

I actually did buy 5 of the 280xs, and that 1500w would not handle all 5.  

Theoretically, you could mod the bios (with vbe7) but after poking around and looking at all the softbrick reports it would appear that MSI did something within the bios framework that vbe7 is somehow messing up.  The thing is, a new version of vbe7 may come out that has official support for the R9 2x cards and at that point your investment in the MSI cards will really shine.  I say shine because that Samsung ram they have is golden!

What PSU are you using?  I am going to be ordering the parts to make my first 280x rig next week, but was thinking a 1350W was going to be enough... guess I need to think bigger!

SilverStone ST1500 1500w.  I would highly recommend it.  Very good unit for the price.

Thanks for supplying that hopefully good news. Would you please update this post if at any stage you do manage to undervolt them. Also I cannot get over how expensive that PSU unit was. I really do hope it has good resale value...

Just to also say I bought a B Grade MSI Z77A-GD65 Intel Z77 motherboard for £70 and that included 8GB of Ram free with it. I take it, it being a completely different motherboard to what you have bought will not effect my attempt to match your hash rate.

^^ That Silverstone unit is usually ~$329.99, not that 440+ you may be seeing right now.  It's a solid unit with Nippon caps etc.  Should be quite re-sellable.

I will certainly update this post if i can figure out a safe way to undervolt these cards!

Thanks, mate!  Going to order one now.

How long have you been running it continuously? 

100% uptime (with 4).  I've taken it down a couple times to mess with physical arrangements, but otherwise it's been rocksteady with 0 issues to speak of.

My rigs run at 750kh/s per card for a total of 3mh/s and are pulling 985W at the wall, and I think there is still room for more optimization. ;)

Would you mind sharing your settings and which cards you are using?

This is what I was hoping to acheive.  I want to get 4 280x to run on a 1200W 80plus Platinum-rated Corsair PSU.

Just waiting on my paycheck next week to order the rest of the parts.

Looking at using Sapphire 280X Dual-X cards - anyone tried similar settings on these?

Sure, I'm running 4 x Asus 280x dc2t. Using MSI Afterburner undervolted core to 1.064v, clocks: 1050/1500
Using sgminer 4.0 and optimized scrypt130511Tahitiglg2tc8192w256l4.bin
Also undervolted/underclocked Sempron 145 to 1.1v @ 2GHz
PSU are dual Seasonic 1000w platinum

Hmm...

Maybe I will just do that instead of trying to get it all to fit on one PSU.   Seems like a little overkill on the cost vs hash ratio using two PSUs vs one.  I was hoping to get all 4 of them powered on one of these:

http://www.newegg.com/Product/Product.aspx?Item=N82E16817194105

Thanks for all of the info.  This will be my first new rig, so I am getting excited.  I've just used 5000 and 6000 series cards on used motherboards and PSUs in the past. Hopefully all the endless hours of tweeking will come in handy :D

It's fine to use one PSU imo, I just had 2 of those lying around so why not. But with 2 PSU everything is rock solid stable and running for over a week with no issues what-so-ever.

I'll probably just buy two of the 1350W PSUs and then if the second one isn't needed, then I will just have to buy 4 more GPUs and build a second rig :D

Surely can't wait for mine to come in now! Be next week but this is much better than the 720 I was looking at before! Nice job!

Nice hashrate!
but the kh/w is meh for 280x's

can anybody post the link for this version of rom?

I knew this would drive up the price.  MSI 280x are $499 now.  lol.

Has anyone else been able to do this on their MSI 280x's?

In what universe? :O

seriously?

http://www.newegg.com/Product/Product.aspx?Item=N82E16814127759

So Your only source for hardware is newegg, and nothing else?

Quit being a jackass.  Everyone knows newegg is the baseline for everything.  And obviously anyone with a brain knows dozens of other places to shop.

Can somebody post 042 bios from this card?

found https://app.box.com/s/v1ihzz04dytdbv3m7wua

has anyone other than the OP managed to pull this 820khs off?
im trying but cant hit it yet.
cheers.

hahahaha

I get 745 max on my MSI. Tried this guy settings - less than 600Kh/s

https://bitcointalk.org/index.php?topic=438191.msg4839916#msg4839916

These MSI cards may be special.  They do use Samsung ram, and not elpida or hynix.  There's a good chance the MSI card bios may having tigher memory timings etc which allow higher hashrates.

The only other 280xs i know of that hit this high are those Sapphire Toxic 280xs.  I would be highly interested in knowing what brand of ram they use.

hi everyone.

ive been mining with my vtx3d 7870 black tahiti le for a while now and im getting 345kh/s with cgminer i was just wondering if i could get a higher hashrate. this is my command.

--worksize 256 --lookup-gap 2 --thread-concurrency 8192 -g 2 --intensity 12 -Q 0

any help would be great. thanks.

can you show your memory  @ vbe7 or tahiti gddr5 identifier

Is the bf4 version same as this?

I do not think the cards in the OP are BF4 Eds.

I can't provide anything about the ram as i have since sold these cards off for 270s.  

270s make quite a bit more sense in terms of performance / watt!

What hash rate are you getting with the 270s? and which brand of 270s did you get?

Not if you also calculate the cost for additional hardware like PSU, motherboard, RAM, CPU, USB and whatnot.

I spoke to the owner of this shop. He has 14 in stock.
http://shop.magicboxsolutions.com/msi-radeon-r9-280x-graphic-card-1000-mhz-core-3gb-ddr5-sdram/

10 now, thanks for the referral :)

The best I have seen is 750, I'm using BAMT 1.3

Sorry for digging this thread up, but just noticed this question:
MSI 270s and Asus 270s which are collectively doing ~470khs @ 1100/1250/1.1v @ i19.

What / where do I get the optimized bin?

I concur with these settings. 1100/1250 but i use xI @ 4. and get ~480khs

Didn't realize my MSI 290x cards were actually all 7970. But the 290x recommended settings work great with very little tweaking and I did all this work so I'm gonna post it here cause i just don't care enough to look for the correct thread to post it under. Meh.

http://i.cubeupload.com/LdXWwk.jpg

    "worksize": "256",
    "intensity": "20",
    "thread-concurrency": "8192",
    "gpu-engine" : "1168",
    "gpu-memclock" : "1500",
    "lookup-gap" : "2",
    "gpu-powertune" : "20",

    "failover-only" : true,
    "no-pool-disable": true,
    "no-submit-stale" : true,

    "queue": "0",

    "kernel" : "darkcoin",
    "kernel-path": "/usr/local/bin"





MSI R7970 TF 3GD5/OC BE
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127732
stock voltage