New Rig advice with 4 Radeon 7950's | Bitcointalksearch.org

miaviator

donator

Activity: 686

Merit: 519

It's for the children!

Quote from: SneakyNinjA on February 14, 2014, 03:34:16 PM

I would second key00's remarks on not using an enclosed case. make a room in your house off limits for your child and put an open rig of some sort in there. These pump out 70C+ air, and in a confined space you'll never get them mining (ie they'll overheat and shut down before you submit any hashes that matter). If you have a garage or a drill, just build http://www.bitcointrading.com/forum/mining-hardware/guide-make-your-own-open-frame-rig/ out of wood. costs maybe $10, and all parts can be found at any hardware store.

I also wouldn't 'dangle' the cards, they need to be secured to something... Since you're interested in litecoin/dogecoin go to www.reddit.com/r/dogemining and follow one of their beginner guides.

and in a confined space you'll never get them mining

Of course. This is why manufacturers like Dell, HP, etc all run their enterprise class servers in open air rigs. Also it's why all datacenters have really big empty spaces with milk crates stacked on top of each other running 10Kw on a 19" x 30" foot-print in a milk crate.

Right?

sapstar

newbie

Activity: 58

Merit: 0

I built the frame using pvc pipes as described in the below link.
https://litecointalk.org/index.php?topic=12330.0

As I saved money on the case and motherboard now, I spent on a 1600w PSU and an additional 7950.

This is what I am building with now.
5x Sapphire Technology AMD Radeon 7950 HD 850MHz 3GB PCI-Express 3.0 HDMI BoostLite
AMD sempron 145
Gigabyte 970A-DS3P motherboard
Lepa 1600w Gold PSU
250GB HDD
8GB RAM pulled out from my PC
3x PCI-E 1x to 16x Risers (I will put 2 cards directly on the board)
USB wireless dongle

sapstar

newbie

Activity: 58

Merit: 0

Thanks for the advise guys. I will go with the below one. Also I will be getting a sempron processor and a cheaper mother board now. I am now able to cut around 200 from the total cost

and get better air flow.
http://www.ebay.co.uk/itm/32-L-LITRE-FOLDABLE-FOLDING-FLAT-PLASTIC-STORAGE-BOX-CONTAINER-BASKET-CRATE-/291058831661?pt=UK_Storage&var=&hash=item43c475512d

SneakyNinjA

newbie

Activity: 21

Merit: 0

I would second key00's remarks on not using an enclosed case. make a room in your house off limits for your child and put an open rig of some sort in there. These pump out 70C+ air, and in a confined space you'll never get them mining (ie they'll overheat and shut down before you submit any hashes that matter). If you have a garage or a drill, just build http://www.bitcointrading.com/forum/mining-hardware/guide-make-your-own-open-frame-rig/ out of wood. costs maybe $10, and all parts can be found at any hardware store.

I also wouldn't 'dangle' the cards, they need to be secured to something... Since you're interested in litecoin/dogecoin go to www.reddit.com/r/dogemining and follow one of their beginner guides.

sapstar

newbie

Activity: 58

Merit: 0

Thanks for advice key00. The only reason I wanted to get a case was because I have a 3 year old and if he sees an open case, he will try to pull things out of it. I think I have no other choice at the moment. I will consider your advice on 2 power supplies.

Would it be ok to leave the cards dangling in the case if i use riser cables? If I will use riser cables, I will go for a cheaper amd motherboard. I was only getting this mother board because all the cards can be directly inserted without riser cables.

Any recommendations for AMD motherboards please?

Forgot to mention. I am not looking into mining bitcoins. Was looking into litecoin, dogecoin and leafcoin.

key00

member

Activity: 61

Merit: 10

If you want to mine BTC, GPUs are no longer profitable. However, you can mine scrypt based coins and convert them to BTC.

2. You'll definitely need at least 1300w PSU, but 1500w is probably better and will give you more overhead.
4. You'll probably want to get riser cables, otherwise those cards will be pushing out hot air directly on to the other cards heating them up before any work is even done.
5. Any hard drive is fine, a lot of people run off of a flash drive. SMOS-Linux (http://www.smos-linux.org/) is a decent place to start
6. 4gb of RAM is fine
7. This case looks like it has a lot of air flow, but you could save yourself $100 by just going with a plastic milk crate and a cheap 20" box fan. You might buy it and find that without riser cables and with everything trapped in a metal cage it runs too hot. Then you're stuck with a case you can't use and have to sell to someone at a discount. There are also aluminum framed cases that might work well for you (example https://cryptothrift.com/auctions/miner-assembly/custom-litecoin-rack-case/).

Hope this helps, I'm new to this as well and this is what I've learned so far from experience/others.

EDIT: It is sometimes cheaper to get 2 750w PSUs than 1 1500w PSU.

sapstar

newbie

Activity: 58

Merit: 0

Hi Guys,

I am new to the forum and new to bitcoin mining. Have been trying in the past few days to understand what it is. Have done a day of mining on CPU and now see that it is time to start proper mining with GPU's. I am planning to build the below Rig. Can you please give me some advice if something doesn't look right or has known issues? Please let me know if I need to add anything else to the shopping list.

1. Sapphire Technology AMD Radeon 7950 HD 850MHz 3GB PCI-Express 3.0 HDMI BoostLite (Four)
2. EVGA SuperNOVA 1300 G2 80 Plus Gold Power Supply (Do I need 1300W or should I get a 1000?)
3. Intel Pentium G3420 Processor
4. Gigabyte Z87X-OC Motherboard (Assuming i can fit the 4 graphics cards without any cables here)
5. 64gb ssd (Or would Hard disk be OK?, I have a spare 250GB)
6. 4gb Memory (Would i need more?)
7. Corsair CC-9011030-WW Carbide Series Air 540 ATX High Airflow Cube

I will be buying some more fans additional to the ones supplied with the case for cooling.

I appreciate you responses.

Topic: New Rig advice with 4 Radeon 7950's (Read 1044 times)