Jensen567

My favorite things about the G3 are the laser focus and being able to change the amount of screen real-estate the keyboard takes up. My S5 drives me crazy with how much of the screen my keyboard uses, makes simple things like logging in somewhat difficult.

Believe me I have tried those. Intensity 13 seems best pretty much regardless of all else. Is there anyway to get cgminer to collect shares with a low TC?

I already have this system setup, and maybe I dont need all 32GB for gaming, but I sure as hell do when I am working with huge CAD models.

No need to be sorry, this machine was purchased long before mining was even a thought in my mind. This seriously went in my head from "I should do some folding to heat my house" to "wow I can make money "mining" fake coins? Sure why not give it a go!" Any reason why XFX GPUs would be any worse off than any other manufacturer? There are 100% reference boards, AMD on the PCB above the PCI-E connector and everything. Came from the first batches of hardware. I CAN get these cards to hit 700kH/s, but for some reason cgminer wont collect shares with a low thread concurrency.

Yeah I have, I have played with the memory and core speeds, tried the .605 ratio, all that. I have tweaked the CG miner settings and I cannot find a thread concurrency high enough that I actually collect shares which will give me a good hash rate. I can get 700kH/s per GPU if I drop the TC to 2048 and run 2 threads but it just sits there hashing and not getting any shares (WU = 0). Honestly so far the best WU I have been able to achieve is with stock CG miner settings, just telling it to go for 2048 shaders and Intensity 13 and letting it do the rest. I had to after the price drop below $300 on sale. Especially for a PC I was calling "Project Space Heater". I need it to use all of the watts. In all honesty though, efficiency wise it beats out my old FX-8350 by a long shot. Not bad, but not great either. Especially considering I have a spare PC with 2x 7870s in it getting 400 kH/s each on those. Lots more power for not lots more performance.

So I wanted to take a minute to write to you guys about my experience trying to mine litecoins on the following setup. Project Space Heater Case - Cooler Master HAF XB Cooling - AMD FX Liquid Cooler (Asetec Thick 120mm AIO) Motherboard - ASUS Crosshair V Formula Z CPU - AMD FX-9590 RAM - 32GB (8GBx4) Crucial Ballistix Tactical LP CFXGPU - XFX Reference AMD HD 7970 CFXGPU - XFX Reference AMD HD 7990 OS, Apps, Games - 2x Samsung 840 PRO 512GB (1 OS and Apps, 1 Games) Storage - 2x WD Velociraptor 1TB RAID 0 PSU - SeaSonic SS1000XP 1000W Platinum Network - ASUS PCE-AC68 Misc - Micron 91xx RAID controller for Raptors, USB 3.0 Card, Bluetooth Yes I know, not an ideal setup for mining, but this rigs primary purpose is gaming and standard office use, I just recently began to try mining on it in order to heat my house (Getting cold in Upstate NY finally, I know, so far south) and make use of the components during their downtime. Well so far I have not had a ton of luck, I can only get around 500-550 kH/s on any of the 3 GPUs at a high enough Thread Concurrency to actually get shares (I can pull 700 kH/s all day at 2048 concurrency, but I get 0 shares). I can work on tweaking CG miner more, but it just does not seem to like there cards (or an HIS reference HD 7970 I have, all at 1000/1500, but I have tweaked clocks also). The most important discovery I have made though, is that 7990 under load, holy hell does that thing get hot. I can keep 1 of the 2 GPUs running (stock clocks, 1000/1500) almost continuously. This was really surprising to me as I have never seen this sort of heat from gaming or furmark before. It is so bad that I have ziptied 2x92mm and 2x60mm fans to the side vent of the HAF XB and have them blowing directly on the card, and that is still BARELY enough to keep the thing cool with both GPUs running at the lighter 500 kH/s loads (if I use the 2048 thread concurrency it melts). So I do not think the reference HD 7990 is really suitable for mining unless you can liquid cool or run it in a freezer. At least this is my experience. Anyone else have any other experience, or a way to fix it? Despite everything I have been sitting here getting a solid 1.6 MH/s for the past 6 hours or so with all of my temps around the 80C mark maximum which isnt too bad IMHO. I do need to upgrade my PSU, 900W (at the plug) continuous on a 1000W (output) rated PSU cannot be good long term. I was probably just going to go with the AX1200i as I want to stick with something 80+ Platinum made by SeaSonic (so I don't have to re-wire my case). It is only 200W more, but that should be enough overhead. TL:DR: Reference HD 7990 gets hot while mining, real hot, needs to be run with liquid cooling, or inside a freezer. Only getting around 500kH/s with Tahiti GPUs after playing with CG miner and clock settings, and trick or is it all black magic? I need bigger PSU

Thanks for the quick response in these wee morning hours. What are some good settings for these Tahiti XT GPUs? Right now I am running 900MHz core and 1500MHz memory (I normally do 1000/1500 for gaming, but I read that a .6 ratio is better). Have been playing with the concurrency, work size, intensity, and thread counts in GUI miner and cant seem to find any correlation. haha.

So I did not want to start another "Should I mine Litecoins?" thread so I will ask in here. My rig is an FX-9590 with an HD7990 and an HD7970, electricity costs me around $0.08 - $0.10 per KWh depending on time of day, year, etc. Should I bother mining LTC when I am not using the rig? This is my day to day office machine (not as in for work, but web browsing, youtube, etc) and my gaming rig so it probably would not be mining 24/7. I already own the hardware for gaming so not worried about trying to make back an investment, just want some profit. As a bonus I live in the northeast where it is cold out right now so I actually initially started looking into this as a way to heat my house. lol. Check out the build logs soon for a thread by me on my PC "Project Space Heater". The calculator says "DO IT DO IT DO IT" but is it actually worth it? Will this kill my GPUs in 6 months or will it be fine if I keep temps in check?