Quote from: Rastanan on July 28, 2019, 03:31:30 PM

Quote from: kiaas on July 20, 2019, 01:21:17 PM

Quote from: Matrixadm1 on July 19, 2019, 05:50:29 AM

Hi, I have following rig with:
4 x Sapphire Radeon R9 290 graphics cards
AMD Sempron(tm) 145 Processor 2.80 GHz
Gigabyte 990FXA-UD3 motherboard
RipjawsX DDR3 16GB installed Memory
WD 320GB Hard disk
ThermalTake ToughpowerXT GOLD 80plus 1475W power supply
Windows 7 Home Edition 64bit operating system.

I used to mine ETC using claymores miner but stopped due to costs and also no foreseeable potential of ETC price rocketing!!!
I was wondering if there is anything I can usefully still mine? I can take a loss so long as I see potential for the coin price growth.
I would like to mine GRIN but not sure if the graphics card supports the level of power needed for this.

Any help would be appreciated.

Thanks.

I have 2 R9 290s,mining grin one does 2.5Gps, another does 2.77, I'll be trying to figure that out later. It's lower power than eth, but I'm not sure by how much as my kill-a-watt is dead. It will work on linux (tested with SMOS myself), it might work on windows 7, but not windows 10. On Linux you can get 27-31MH/s on ethash (vs the 20-24 on windows) too. My experience mining cryptonight variants on my 290s has been.. well I'm only getting 700 or so H/s. Grin was definitely making me more profit, and eth classic making the most revenue and maybe profit. You need to use Hawaii Bios Editor to do any overclocking/undervolting you want if using them on linux.
edit: lolminer is miner to use for grin on AMD.
edit2: Less typical or efficient algos the 290s can do are: the equihash variants, like zhash, BEAM, and I believe Aion but I didn't test that one myself. I believe mine were outperforming my RX 580 on BEAM, too, but I've only tested on linux. Windows 7 may work the same even though it doesn't get the memory management benefits of linux, where the ethash performance difference comes from. They can do the C31 algo, for grin, as well with lolminer but only at .27 gps, though they ran fairly cool when mining that so power efficiency may be better there.

When you get the 2.5-2.77 GPS, do you use the Linux only?

What are the CPUs you used in the system?

SMOS, lolminer 0.8.5, AMD FX-6300. I don't think lolminer can do it with 4gb cards on windows 10, so yes linux only.