\[Eligible\]Mining
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Item 5:
I’m sure a helped a new miner somewhere :) hehe.
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Item : 1, 3, 4
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Item: 2
200hrs mining is about 8.333days… screenshot of FTc pool mining stats.
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[b]Configuration of cgminer to achieve 2.5MHash/s with 4-7950 graphic cards[/b]
[b][url=http://coin123.org]coin123.org[/url] for more details[/b]
[b]Question1: How can I get my first Feathercoin mining rig?[/b]
Answer: I am not sure which configuration of a mining rig is the most efficient, but I designed my own mining rig with $1,700 to achieve a computing speed of 2.6MHash/s. My first mining rig is made up of 4 Sapphire Radeon Vapor-X HD 7950. The detail list of the rig is list below for your reference:
[b]Rig list:[/b]
[b]Graphical card:[/b] Sapphire Radeon Vapor-X HD 7950 OC with Boost 3 GB DDR5 DL-DVI-I/SL-DVI-D/HDMI/DP PCI-Express Graphics Card 11196-09-40G
[b]Power:[/b] OCZ 1250W ZX Series Fully-Modular 80PLUS Gold High Performance Power Supply compatible with Intel Haswell Core i3 i5 i7 and AMD Phenom- OCZ-ZX1250W
[b]Memory:[/b] Corsair XMS3 4 GB 1333MHz PC3-10666 240-pin DDR3 Memory Kit for Core i3 i5 i7 and CMX4GX3M1A1333C9
[b]Mother Board:[/b] ASRock MB-970EX4 Socket AM3+/ AMD 970/ AMD Quad CrossFireX& nVidia SLI/ SATA3&USB3.0/ A&GbE/ ATX Motherboard
[b]Processor:[/b] AMD Sempron 145 Processor (SDX145HBGMBOX)
[b]Fan:[/b] Lasko 507 10-Inch Breeze Machine Floor or Table Fan, Black
[b]PCI-E Cable:[/b] PCI-E Express 16 x Riser Flexible Cable
[b]Hard Drive: [/b]WD Blue 500 GB Mobile Hard Drive: 2.5 Inch, 5400 RPM, SATA II, 8 MB Cache - WD5000BPVT[b]Question2: What is the best configuration of cgminer to achieve 2.5MHash/s?[/b]
I list the screens of cgminer configuration file and running speed of my rig. If you set the same configuration with mine then the temperatures of the four cards are lower than 70, without the Lasko fan as depicted above.
[b]Question3: What is performance of rig in a pool?[/b]
Please see the details in the attached picture.If you find the post is helpful, please donate FTC to 6mM4ELUbrcUfHFvvcZtpcY1NFiHbWDUX9z
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Item : 1
Here is the RaspberryPi 256MB Model B (first gen) having a single core ARM processor that is use to mine FTC. Using pooler’s minerd, and overclocking the CPU to 900MHz(stock is 700MHz) This little fellow is able to get 430Hash/s. Unfortunately, the pretty powerful GPU is not able to use for mining. it draws about 4W from a USB wall plug. Just a microusb for power and a Ethernet cable for internet and SSH access. Runs headless.
If the USB wall plug is higher rated, eg. 2A 5V, this little fellow is able to overclocked to 1GHz, this will give a hashrate of 500 hash/s.
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item : 4
Even though the raspberryPi is using a cool Arm processor(single core), It does get pretty hot when mining 24/7 (>60C), so added some heatsink compound(the white paste on the CPU) to the CPU, this improves the heat transfer by reducing air pockets between the heatsink and the cpu surface. added a “large” passive heatsink to it. Temp is about 53C without any active cooling.
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dear contestants,
The tickets are counted and this is the preliminary result. These results have been collected with great care, however may contain mistakes. Not everyone has read the contest rules thoroughly so please check this before you contact us. In the case of a mistake inform me, ChekaZ or J4c0b5L4tt3r through PM or leave a message in the topic.
Mirrax 22
unkunku (newbie) 10
iawgoM 26
goldbit89 4
wrapper0feather 10
silentgaps 2
deroekeloze 26
ChekaZ 22
junior0527 14
“00400” 22
NickCoin 16
d2 2
sorrowfox 14
Wellenreiter 24
song414 4
Ville 24
crazyearner 14
KoolKrafter 22
MCBITMAN 12
MrFeathers 22
sheepson 24
Simkill 10
gen 24
leimonster (newbie) 24 -
1> My mining rig is, well, just my work PC where I stuck in a Radeon GPU.
Specs: Intel Core i3 540
4GB RAM
Sapphire HD 6790 1 GB DDR5
Windows Professional 64 bit
SMPS: Some generic 400W[img]http://s16.postimg.org/wp2aojjo5/IMAG0159.jpg[/img]
My initial card died while I was playing Mass Effect (of all things) a couple of days before Feathercoin was released. Imagine my frustration as I plugged on with the two Core i3 processors at my disposal (the other one being the lappy in the picture). Anyways, I bought this card after a couple of weeks and have been mostly mining Feathercoins; though occasionally jumping to some low difficulty promising alt.
This ‘rig’ is just for gaining experience and I am now planning on getting a dual 7950 setup. The only thing I am not sure about is the case - do I buy a standard one which would cost more or try making one. I guess I will just buy a standard one for this and worry about custom if I expand further.
2> I have been mining at give-me-ftc off late (username: Fernandez, User ID: 610). Earned almost 50 FTC over the past week as difficulty has mostly stayed under 100.
[img]http://s13.postimg.org/4arwiuron/Payout_details.jpg[/img]
3> cgminer 3.0.1 settings
[i]color B1
cgminer --scrypt -o stratum.give-me-ftc.com:3333 -u Fernandez.1 -p x --shaders 800 --intensity 10 --worksize 256 -g 1 -s 2[/i]The intensity is kept at 10-12 as I use my PC for work too (which my laptop can’t handle). This gives me around 140 Khash/s. I usually ramp up the intensity to 14-15 overnight which gives me a little over 200 Khash/s. I also sometimes press into work my CPU though it hardly contributes and serves only to unnecessarily heat up the air around it.
The GPU core is clocked at 840 MHz while the 1 GB DDR5 memory is at 1050 MHz. I overclocked with AMD Overdrive but it barely increased the hashing rate while increasing temperature so I have reverted to stock settings.
The best share I got was 2.93m. Good thing that people set up pools :)
4> My cooling system is just to leave the panel open. Its an airconditioned room anyways with the thermostat at 24C. At max load (intensity 15) it goes upto 78C at 67% Fan speed. Though usually at max load it stays at 75-76C at 61-63% fan speed. The only time it crossed 80C was when I was messing with the cgminer settings and turned off auto-fan. But I immediately manually set it to 85% and all was OK
I tried tinkering with target temp settings, but left it out as the auto settings seem to be good enough and keeps it under 76-77C anyways.
For my new rig, I am planning on getting this http://www.newegg.com/Product/Product.aspx?Item=N82E16811129180
What do the experts reckon? Any better options?5> I was helped by d2. So tickets for him.
https://forum.feathercoin.com/index.php?topic=2190.0 -
Item 1:
I’ve got an old motherboard and AMD 3000+ BE, 2GB of RAM, a 850W Corsair PSU, and 2 HIS Radeon 7950 cards. I run Ubuntu 12.04 (for no other reason than it was the version on my hard drive). Each card gets about 650khash/s, with a total of around 1310khash/s, depending on my luck. Temps tend to run around 70-75c for one card and 80-85c for the other, more problematic card.
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Item 2:
Not sure how I can show proof as FCPool doesn’t have those fancy graphs. I mean, I guess I could give you my electricity bill. :P I have, however, been mining almost 24/7 for the last couple months, save for hardware maintenance.
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Item 3:
About 650-660 per card. Total hashrate around 1310khash/s.
thread-concurrency: 24768
worksize 256
gpu-powertune 20
auto-fan
gpu-engine 1075,1100
gpu-memclock 1500
lookup-gap 2
threads 1
vectors 2
intensity 20 -
Item 4:
The easiest ways I’ve found to reduce heat are a box fan and open air. One can also replace the thermal paste on a GPU if it’s gotten old or was badly applied in the first place. However, the thing that tends to help the most is lowering the voltage. If you can do this with your card (either unlocked by default or flashed with an unlocked BIOS), it’s your best chance for lowering your heat output. It does take some careful balancing to ensure stability (hashrate vs heat and all that), but it lowered my temps by 10C and my electricity usage by 130W.