XFX r9 280X and hashrates

[sevoque]

hi guys,

I have probably tried about 100 different command lines ...

i have somehow once managed to get my cards at a solid 710khash each and now for some reason i cannot get it over 650

can anyone with some experience of these cards give me some insight.. i have no idea what i did that time to achieve the stable 710 per card so I'm open to ideas.

I Can tell u what I have tried so far... you will be shocked :~

I'm currently using this

' cgminer.exe --scrypt -I 20 -g 1 --thread-concurrency 24000 --gpu-engine 1020,1020,1020,1020 -w 256 --lookup-gap 0 --gpu-fan 90'

and getting a stable 640-650khash but its not good enough and i know these cards can do more

im basically losing between 70-200k hash per card at the moment

much appreciated to anyone who can help

thx

sev

[RandomUser456]

Try lowering the intensity to 13, the 280x's work best there. Also, change the thread concurrency To 8192 then play with the clocks. Should do the trick!

[sevoque]

Try lowering the intensity to 13, the 280x's work best there. Also, change the thread concurrency To 8192 then play with the clocks. Should do the trick!

already have done that on my other rig, i got 11 of these cards with 7 set up so far, one rig is running the config i posted above, another rig has 3 cards running this

-I 13 -g 2 -w 256 --thread-concurrency 8192 --gpu-powertune 20

only achieving 550khash... i've messed around with the clock in 5mhz incriments up and down like you would not believe... no joy

[soulcity]

--lookup-gap 2 --thread-concurrency 8192 -g 2 -I 13 -w 256 --gpu-memclock 1500 --gpu-engine 1055

[sevoque]

--lookup-gap 2 --thread-concurrency 8192 -g 2 -I 13 -w 256 --gpu-memclock 1500 --gpu-engine 1055

nope.. no where near :/

[Wipeout2097]

At what pool are you mining? Hashrate can vary depending on the pool and coin you're mining.

Test with --gpu-memclock with the values 1500, 1625 or 1750
also with --thread-concurrency 20480

[sevoque]

At what pool are you mining? Hashrate can vary depending on the pool and coin you're mining.

Test with --gpu-memclock with the values 1500, 1625 or 1750
also with --thread-concurrency 20480

Hi wipeout,

im currently pointing 2 rigs at the same pool, one of which is 4 card which is getting roughly 630-650~ per card and the other is a 3card rig which is getting roughly 500-550~ per card...all same gpu's...same mobos...same amount of RAM...same OS... nothing different.

[farkedup]

I have a double D factory overclock XFX 280x and no matter what I do it is TRASH hash. I have had great luck with the HIS and Asus but diamond, gigabyte and XFX 280x's have been horrible for me.

[taltamir]

At what pool are you mining? Hashrate can vary depending on the pool and coin you're mining.

Test with --gpu-memclock with the values 1500, 1625 or 1750
also with --thread-concurrency 20480

Hi wipeout,

im currently pointing 2 rigs at the same pool,

This does not, in any way shape or form, answer the question.
What is the pool name. Is it https://dogehouse.org/ ? is it https://www.multipool.us/ ?
what?

[kikeda]

I havn't tried xfx cards yet, but with sapphire im getting around 730khs with the same cgminer settings and undervolted a bit.

[foodies123]

13 2 256 8192 1035 1500      these are the magic numbers for all 280x I've seen all 707 kh/s constant with no errors/problems.
I   g  w   tc engine memclock