Optimizing sapphire R9 280x Vapor-x

[pindis]

Hi guys!

I'm currently mining LTC at coinotron - getting around 550 khash out of that card. I'm not really too satisfied. before I went to bed last night I was mining at givemeltc, with intensity at 20. that got it around 610 khash according to CGwatcher. but It would seem it crashed shortly after I went to bed..

my settings for mining atm:
cgminer.exe -o stratum+tcp://coinotron.com:3334 -u user.1 -p pass --thread-concurrency 8192 -I 13 -g 2 -w 256 --shaders 2048 --scrypt

What would you suggest?

[Amph]

mmh how much you get now?

overclock it at 1100, ram the same, and same string configuration

[pindis]

Overclocking didn't make any change at all. topping around 570 kh atm.

[MisO69]

Overclocking didn't make any change at all. topping around 570 kh atm.

I have some Saphire R9 280x Vapour-x cards using these CGMiner settings, they give me 740Kh per card and run at 70 degrees.

cgminer --scrypt -o http://wdc.coinmine.pl:9090 -u username.1 -p x --lookup-gap 2 --thread-concurrency 11200 -g 2 -I 13 -w 256 --auto-fan --gpu-fan 30-75 --temp-cutoff 90 --temp-overheat 85 --temp-target 72 --gpu-memclock 1500 --gpu-engine 1080 --gpu-powertune -20 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale

[pindis]

Overclocking didn't make any change at all. topping around 570 kh atm.

I have some Saphire R9 280x Vapour-x cards using these CGMiner settings, they give me 740Kh per card and run at 70 degrees.

cgminer --scrypt -o http://wdc.coinmine.pl:9090 -u username.1 -p x --lookup-gap 2 --thread-concurrency 11200 -g 2 -I 13 -w 256 --auto-fan --gpu-fan 30-75 --temp-cutoff 90 --temp-overheat 85 --temp-target 72 --gpu-memclock 1500 --gpu-engine 1080 --gpu-powertune -20 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale

Thanks, I will test this when I go to bed! I get around 650 atm, after I disabled Aero and changed to XP skin.

[Amph]

mmh, i'm starting to think you are in cpu bottleneck

[pontiacg5]

Does your sapphire card have one or two 8 pin PCIe plugs?

I have several of each. The ones with 1 6 pin and one 8 pin do 750kh/s on these settings.

tc8192
lookup gap 2
worksize 256
engine 1050-1080
-g 2
-powertune -20

The ones with two 8 pin power plugs like settings similar to what MisO69 posted, namely the 11200 TC but my cards manage ~715kh/s at 1025-1040 engine. Anything higher devastates my hashrate.

These cards are kinda picky, no two cards of mine run the same at the same engine clock. Most of mine are within 5-10 Mhz of each other.

[pindis]

mmh, i'm starting to think you are in cpu bottleneck

I shouldn't. I'm running I7-3770k at 3.9 ghz.

Am I really?

[pontiacg5]

mmh, i'm starting to think you are in cpu bottleneck

I shouldn't. I'm running I7-3770k at 3.9 ghz.

Am I really?

No. Absolutely hilarious to suggest that though. I have 6 cards running 715kh each on a $40 G1610

[Lauda]

mmh, i'm starting to think you are in cpu bottleneck

I shouldn't. I'm running I7-3770k at 3.9 ghz.

Am I really?

No. Absolutely hilarious to suggest that though. I have 6 cards running 715kh each on a $40 G1610

I have even some worse AMD CPUs that cost 15-20$ each.

OP, you should get at least 700.

[Amph]

mmh, i'm starting to think you are in cpu bottleneck

I shouldn't. I'm running I7-3770k at 3.9 ghz.

Am I really?

No. Absolutely hilarious to suggest that though. I have 6 cards running 715kh each on a $40 G1610

ah yeah forgot, that this is mining not gaming   

[jacqued]

Aren't you guys having trouble with VRM overheating ? Right now I can't push Intensity over 13 or else VRMs get over 110°C and GPU gets throttled to 500Mhz.

I'm getting 1060 KH/s @ intensity 13 with 2 of these.
I tried everything to cool the VRMs down but even with 4 120mm fans pointing directly at the cards intensity 13 leaves the VRMs at a steady 106°C so i guess it's my limit for now.

(Temps from GPUZ)

[pontiacg5]

Aren't you guys having trouble with VRM overheating ? Right now I can't push Intensity over 13 or else VRMs get over 110°C and GPU gets throttled to 500Mhz.

I'm getting 1060 KH/s @ intensity 13 with 2 of these.
I tried everything to cool the VRMs down but even with 4 120mm fans pointing directly at the cards intensity 13 leaves the VRMs at a steady 106°C so i guess it's my limit for now.

(Temps from GPUZ)

You shouldn't push past I13 anyway, every single 7970/280x I've worked with does best on two threads. When using two running more than I13 is nothing but hardware errors.

The VRMs are HOT! I think anything under 125c is OK.

[pindis]

I'm now getting 720 khash! Thanks boys!!

[Nixzor]

With what parameters?

[pindis]

cgminer.exe -o stratum+tcp://coinotron.com:3334 -u user.1 -p x --thread-concurrency 8192 -I 13 -g 2 -w 256 --shaders 2048 --scrypt --lookup-gap 2 --gpu-engine 1050
-powertune -20

Are my parameters. Using CGWatcher to make sure I'm not getting hardware errors. and this seems to be THE setting for me.

[Amph]

--lookup-gap 2 did it for you, try to rise the clock to 1100, you should get 750

[Lauda]

I'm now getting 720 khash! Thanks boys!!

Good, now do more optimizing and OC to get 750.

[b@fhx]

Hi,
my configuration file for Sapphire R9 280x Vapor-x (720kh/s):

"intensity" : "13",
"vectors" : "1",
"worksize" : "256",
"kernel" : "scrypt",
"lookup-gap" : "0",
"thread-concurrency" : "8192",
"shaders" : "0",
"gpu-engine" : "1050",
"gpu-fan" : "0-85",
"gpu-memclock" : "1500",
"gpu-memdiff" : "0",
"gpu-powertune" : "5",
"temp-cutoff" : "85",
"temp-overheat" : "77",
"temp-target" : "63",
"api-mcast-port" : "4028",
"api-port" : "4028",
"auto-fan" : true,
"expiry" : "120",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "2",
"hotplug" : "5",
"log" : "5",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "30",
"scrypt" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"

Can someone help me how to pick up a little more speed? When I go to increase the gpu-memclock or  "gpu-engine"  speed go down,
Can you recommend something else?
Thank you in advance.

[tm0w]

As you can see below I prefer a quiet machine above a high hash rate..

http://i57.tinypic.com/2whfdki.png

Between the 2 cards I installed 2x - be quiet!- Silent wings 2 for some airflow..

http://i59.tinypic.com/hs8k7o.png

And this is my config in combination with Sapphire trixx vddc:1137 (what I need to set every restart)..

"intensity" : "13",
"gpu-engine" : "1025",
"gpu-fan" : "39-85",
"gpu-memclock" : "1500",
"gpu-powertune" : "-20",
"temp-cutoff" : "90",
"temp-overheat" : "85",
"temp-target" : "71",
"thread-concurrency" : "8191",
"auto-fan" : true,
"expiry" : "120",
"failover-only" : true,
"gpu-threads" : "2",
"log" : "5",
"queue" : "1",
"scan-time" : "60",
"temp-hysteresis" : "3",
"scrypt" : true,