Low Hashrate on second GPU - Claymore's Miner (R9 280x & RX 570)

[Dukebit]

Hi Guys,

would anyone be able to assist perhaps, i'm new to mining and tried everything to up the Hahrate of my R9 280x.
I've tried everything but not sure where i'm going wrong,

I'm using Claymore's v9.5 dual miner for Eth+Decr, I'm a perhaps doing something wrong is the command line?

below a snip of the miner   ( Using RX570 4gb -Gpu0   & R9 280x 3gb Gpu1)

PLs Help

GPU #0: Ellesmere, 4096 MB available, 32 compute units
GPU #1: Tahiti, 3072 MB available, 32 compute units
ETH - Total Speed: 23.312 Mh/s, Total Shares: 6(3+3), Rejected: 0, Time: 00:15
ETH: GPU0 20.855 Mh/s, GPU1 2.457 Mh/s
 DCR - Total Speed: 466.243 Mh/s, Total Shares: 15(12+3), Rejected: 15
 DCR: GPU0 417.102 Mh/s, GPU1 49.141 Mh/s
Incorrect ETH shares: none
1 minute average ETH total speed: 23.268 Mh/s
Pool switches: ETH - 0, DCR - 0
Current ETH share target: 0x00000000dbe6fece (diff: 5000MH), epoch 136(2.06GB)
Current DCR share target: 0x000000001fffe000 (diff: 34GH), block #1869639534
GPU0 t=68C fan=71%,

[gueorguiev]

Are you overclocked? You have high rejected shares, and that may be a result of an unstable overclock. Check HWinfo and see how many memory errors you are getting, if its isolated to one card, and maybe dial back the overlcock till you find a stable hashrate/shares/clock

[Dukebit]

Hi Guys,

I've switched the two Gpu's, now getting the low hashrate on RX 570. Both gpu's seems to perform okay individually but together it seems to be a problem, the second gpu in line has a very low hashrate.

I'm using Nicehash miner.

Please help!!! i'm a complete noob to mining.

Thank you

[Dukebit]

Hi

Thanks for the reply, non of the gpu's are overclockec, in fact I actually tried under clocking them but no big difference in the hashrate.

[Dukebit]

Any help please! I'm out of ideas! I've tried everything, surely some else experienced the same problem before.

[adaseb]

Plug a monitor into the R9 280X.

[Dukebit]

I've tried but no luck, HDMI instead of the normal port won't make a difference or would it ?

[kodokbuduk]

I am mining ETH only and any of you has experience decrease on hashing power of your GPU? last two months ago my RX580 4gb was hashing 31mh..now is 29mh..i didnt change the clock/mem, wierd.

[Dukebit]

Hi

Sorry no idea, perhaps something to do with the difficulty if mining? is the gpu not running to high temperatures ?

[trobnor]

are you using team viewer it F-s up one of my 1080Ti's hash by about 10-30% depending on coin algo

[Dukebit]

Seems like my low hashrate is a mystery as no one can help me.

if someone know please let me know, in the meantime I'll try and figure it out.

[Dukebit]

.