R9 280x Gigabyte GV-R928XOC-3GD

colsteel

]
,
“intensity” : “13”,
“vectors” : “1”,
“worksize” : “256”,
“kernel” : “scrypt”,
“lookup-gap” : “2”,
“thread-concurrency” : “8192”,
“shaders” : “2048”,
“api-port” : “4028”,
“auto-fan” : true,
“expiry” : “120”,
“gpu-dyninterval” : “7”,
“gpu-platform” : “0”,
“gpu-threads” : “2”,
“gpu-engine” : “1080,1080,1080,1080”,
“gpu-memclock” : “1500,1500,1500,1500”,
“gpu-powertune” : “0”,
“log” : “5”,
“no-pool-disable” : true,
“queue” : “0”,
“scan-time” : “30”,
“scrypt” : true,
“shares” : “0”,
“kernel-path” : “/usr/local/bin”
}

i used that in my config file and getting a solid 750kh/s with no Hard ware errors

angloblaxon

glad what worked for you. thats the standard config. What model saphire do you have?

colsteel

i got the vaporx thanks for your help :)

angloblaxon

it seems to be. i just ordered 2 saphires and will report bout my findings and compare the gigabytes to the saphires.

LoadingError

Hi how are u placing this card? how many do you have?

i got 3, but that was over heating like carzy, now iam using too, still over heating :(

angloblaxon

paste your config? atm i have 3 + 1 7970 running in a rig. They are close together until those openrigs come in! [url=https://openrigs.com/]https://openrigs.com/[/url]

i have one that sits at 80 degrees but its stable.

Here is a pic of my 2 top rigs.

[img]https://dl.dropboxusercontent.com/u/20540721/2013-12-04 17.24.20.jpg[/img]

LoadingError

hi how do you put the scrypt in the .bat? i am new to all this sorry

colsteel

[quote name=“angloblaxon” post=“39776” timestamp=“1386199808”]
paste your config? atm i have 3 + 1 7970 running in a rig. They are close together until those openrigs come in! [url=https://openrigs.com/]https://openrigs.com/[/url]

i have one that sits at 80 degrees but its stable.

Here is a pic of my 2 top rigs.

[img]https://dl.dropboxusercontent.com/u/20540721/2013-12-04 17.24.20.jpg[/img]
[/quote]

man those are awesome i think i am fix to buy some. to bad i cant find any more r9 280x on the net. newegg all gone.

angloblaxon

newegg, amazon, tigerdirect… ebay is 7950s are going for 450 a piece… its getting silly. Help out with my other forum topic. If i find something i will post. I managed to grab 2 saphire 280x cards today but they instantly went sold out.

[url=http://forum.feathercoin.com/index.php/topic,5338.0.html]http://forum.feathercoin.com/index.php/topic,5338.0.html[/url]

colsteel

we should buy all the 1000w and up power supply’s!! then we hold all the power. then trade em for ther cards lol :)

angloblaxon

[quote name=“colsteel” post=“40421” timestamp=“1386312565”]
we should buy all the 1000w and up power supply’s!! then we hold all the power. then trade em for ther cards lol :)
[/quote]

if i only had that kind of money!

Nutnut

Nutnut’s toptip for the day, run 13.04 instead of 12.04 for mining rigs. Then see if you hash 750+ ;)

Nutnut

Try toggling the iommu setting in your bios.

Nutnut

standard setting but 1055 on the GPU.

I think the gigabyte cards are a bit wobbly (struggling with stability) but then i am mixing 7970 & 280x on the same board. Maybe i’ll do a fresh build one day.

The Asus Matrix Platinums are my new fave card! 765Khs ~75c ~50% fan. :D

Mobo GA-990FXA-UD3

sweater

[quote name=“Nutnut” post=“41710” timestamp=“1386525905”]
I think the gigabyte cards are a bit wobbly (struggling with stability) but then i am mixing 7970 & 280x on the same board. Maybe i’ll do a fresh build one day.[/quote]

As someone who was able to snag three of these cards, I’m now running into the fact that Gigabyte doesn’t easily let me undervolt these cards. Plainly put, I’m overheating them quickly running either Linux (13.10 works great!) or Win7. I’ve been able to undervolt some MSI 7950’s and get great performance out of them, but this problem is vexing me…

How exactly are people getting 700+ speeds out of this card while not hitting 85+ temps on these?

EDIT: ASRock 970 Extreme4, 1000w PS, 4gig RAM, Sempron 145, Win7 64bit, tried either Catalyst 13.9 or 13.11 beta. Have tried guiminer or cgminer.

mike

sweater

[quote name=“sweater” post=“44630” timestamp=“1387119457”]How exactly are people getting 700+ speeds out of this card while not hitting 85+ temps on these?[/quote]
Solved to a very large degree. I followed the undervolting procedure as described in this article:

[url=http://www.cryptobadger.com/2013/10/undervolting-in-linux-via-modified-bios/]http://www.cryptobadger.com/2013/10/undervolting-in-linux-via-modified-bios/[/url]

Set all three cards to 1.075 (which actually yields 1.075, 1.100, and 1.100 for some reason) and now I’m seeing much more reasonable temps, better speeds, better stability.

mike

prensel

What did you get out them when undervolting to 1.075V ?
What temps/fan speed ?

Plopsi

just my 2 cents:

maybe you want to set a clock-range, target-temp, overheat-temp and cutoff-temp? - espeacilly you run it unattended.

Plopsi

sweater

[quote name=“prensel” post=“45106” timestamp=“1387216163”]
What did you get out them when undervolting to 1.075V ?
What temps/fan speed ?
[/quote]
I haven’t been able to get the rig out to the garage (mid-40’s temps, more air flow) so I haven’t been able to really whip them yet.

And oddly enough, the exact same rom flash to all three cards yielded 1.075 on one card, 1.100 on the other two. Close enough, I’ll take it.

[b]Most importantly they’re stable[/b] running in the mid-500’s at low 70’s at something like 50-60% fan speed. Once I get a dedicated fan on these I’ll try to get them up to the high 600’s, low 700’s.

mike

RIPPEDDRAGON

[quote name=“sweater” post=“46184” timestamp=“1387468024”]
[quote author=prensel link=topic=5326.msg45106#msg45106 date=1387216163]
What did you get out them when undervolting to 1.075V ?
What temps/fan speed ?
[/quote]
I haven’t been able to get the rig out to the garage (mid-40’s temps, more air flow) so I haven’t been able to really whip them yet.

And oddly enough, the exact same rom flash to all three cards yielded 1.075 on one card, 1.100 on the other two. Close enough, I’ll take it.

[b]Most importantly they’re stable[/b] running in the mid-500’s at low 70’s at something like 50-60% fan speed. Once I get a dedicated fan on these I’ll try to get them up to the high 600’s, low 700’s.

mike
[/quote]

Take a look at my power optimization thread: [url=http://forum.feathercoin.com/index.php/topic,4176.0.html]http://forum.feathercoin.com/index.php/topic,4176.0.html[/url]
I am working on a guide but that will help for now. I am so pissed my new Gigabyte R9 280xs are voltage locked…I am going to have to flash each of the 2 bios to different voltages, one for power optimization and the other for max hash rate.