Maybe your intensity is too high? My 7870s prefer 17-18 while my 7970 runs best @ 13.... and increasing intensity on my 7970 actually gives me lower hashrates.
Its a unlocked 290. Think its bios issue. Can live with results on 290 bios for now. Might try diff 290x bios and see if helps. Maybe intensity too low? Set on i17 so can at least surf web at same time.
Any specific Catalyst version I should be using? I have 2x 7970s and I only get 580 kh/s on each one =/. Or are MSI cards duds like the XFX ones are?
I've tried what feels like a hundred different variations on mem/gpu speeds...currently at 1100 / 1500 but I've got all the way down to 1000 gpu speed in 5 MHz increments. Intensity is 13 on both, threads are set to 8192.
Maybe your intensity is too high? My 7870s prefer 17-18 while my 7970 runs best @ 13.... and increasing intensity on my 7970 actually gives me lower hashrates.
Is it worth getting two R9 290x to run 24/7 for LTC right now?
Is a R9 270X decent value for mining if I spend $200 on one? I already have a 7850 pulling a little over 305 kH/s.
Well I'm finally up and mining on my R9 290, moved everything in my Antec 300 to a friend's old Mozart TX.
Running this config I'm getting right around 800kH/s. I know its low but I assume thats because I'm running 17 for the intensity so I can still browse the net. Any other glaring issues?
--thread-concurrency 32765 --lookup-gap 0 --gpu-engine 950 --gpu-memclock 1250 --gpu-powertune 20 -w 256 -I 17 -g 1
I don't understand how people with a XFX 7950 TDKC in that chart got 700 Kh/s with or without the same config. I get only 520 or so with intensity at 19 and slower clocks. The slightly lower clocks shouldn't have that big of an influence should it?800 is not bad considering you haven't overclocked the hell out of it.
I would try some settings listed here such as g2 and messing around with the concurrency: https://litecoin.info/Mining_hardware_comparison
You can also ask around on LTC forums but I think 800 for a 290 at those clock speeds is pretty decent.
If you really want to push for 900+ I would recommend unlocking it to a 290x.
setx GPU_MAX_ALLOC_PERCENT=100
setx GPU_USE_SYNC_OBJECTS 1
\Downloads\Litecoin\cgminer-3.7.2-windows\cgminer.exe --scrypt -o stratum+tcp://world.wemineltc.com:3335 -u -p -I 16 --thread-concurrency 24000 --lookup-gap 2 -g 1 -w 256That's not the 0.6:1 ratio which is needed though isn't it?7950 need to be OC to ~1.1ghz reach 600 kHa/s, 650 is pushing it, 700?? Don't believe it.
Vram also need to be overclocked, 1350 to 1550 range for best results but it depends on your card.
That's not the 0.6:1 ratio which is needed though isn't it?
I don't understand how people with a XFX 7950 TDKC in that chart got 700 Kh/s with or without the same config. I get only 520 or so with intensity at 19 and slower clocks. The slightly lower clocks shouldn't have that big of an influence should it?
Btw I run it at 16 when the computer isn't idling, hence the following.
Code:setx GPU_MAX_ALLOC_PERCENT=100 setx GPU_USE_SYNC_OBJECTS 1 \Downloads\Litecoin\cgminer-3.7.2-windows\cgminer.exe --scrypt -o stratum+tcp://world.wemineltc.com:3335 -u -p -I 16 --thread-concurrency 24000 --lookup-gap 2 -g 1 -w 256
It's generally foolish to try to achieve max hash, you usually wind up using a TON more watts in the process to gain a few percent more hash.
Mining is the single most stressful thing you can do to a card outside of maybe Furmark; overvolting/clocking to scrape a few more hash together just jacks up your wattage and temps, which reduces the expected lifespan of your card and also punishes your power supply. All that waste heat also wears your other components down a little faster as well. Not to mention the extra noise from faster-spinning fans.
But if you are gaining 100+ kH/s per card, it is worth it. Maybe not in the long run and it may not be the best to keep them that way (especially in the summer), but you better try to hoard as many coins as you can while the difficulty is low.
That's what the warranty is for. If anything, I would much rather have my components die on my prematurely while they are still under warranty than have them fail once warranty expires.
If you're in that much of a rush, just buy the coins directly.
Ok so you get to burn out a card and lose weeks of mining time on it, pay for shipping, then get back a refurb, all for gaining a tiny bit more hash? This is assuming they don't play games with your RMA and hold it up for months or something. Forget it. I learned my lesson when my 7970's front fan busted. Not worth it to me. You can do whatever you want, and like I said, if you're in that much of a rush, buy the coins directly, that's way faster than mining it and has historically generated 10-20 times the returns of mining.
Ask Balla; 700?? Don't believe it.
It's generally foolish to try to achieve max hash, you usually wind up using a TON more watts in the process to gain a few percent more hash. Getting 500+ from a 7950 is fine. 600+ from a 7970 is fine. 800+ from a 290 is fine. Mining is the single most stressful thing you can do to a card outside of Furmark. Overvolting/clocking to scrape a few more hash together just jacks up your wattage and temps, which reduces the expected lifespan of your card and also punishes your power supply. All that waste heat also wears your other components down a little faster as well. Not to mention the extra noise from faster-spinning fans. All for less than 10% more hash.
At 1100/1700 I could do 650 kh/s.
I preferred 800/1500 because it was 500 kh/s each, so 1000kh/s @ 333 watts, which gave me decent kh/w.
Though with payout as it was, even 1500 kh/s @ 700w was giving more cash per week/month/year.