i might need to limit the bandwidth a bit more…
See the list of Components here: Setup
As you can see Engine: 1100 Memory: 1500 Intensity: 20 Voltage: 1.125 (stock)
The system takes 720w under full load:
I turned to not run a full xfce (Xubuntu, lightdm) Desktop and just run ‘/usr/bin/X :0 -core &’ in /etc/rc.local to have a running X-Server. This increased hashrates a little bit (5 khash).
And some porn:
After the recent high in Bitcoin, i thought about entering the field.
As bitcoins difficulty is super high right now i am planning on mining Litecoin.
It’s difficulty is way lower and it is tradeable unlike the numerous other cryptocurrencies currently floating arround.
Here’s the setup i ordered yesterday:
PCIE x1 works just the same for mining. And this board is not only really… really cheap, it has 5x pcie x1 slots, so it can house 6 gpus.
It has an 1155 Sock. so any cheap Intel Celeron will fit in.
As for the GPUs i went with Sapphire HD 7950 3GB with Boost:
There are plenty of 1155 cpus out there. I does not have to be strong or anything, 1.2 ghz would be sufficient. I went for a Celeron G1010.
Same goes for RAM, 1gb is fine.
I’m planning on running Debian from an USB Stick, this way i save the extra 10W a HDD would drain.
The HD 7950 needs up to about 250 W
The GPU needs 2x 8-pin Connectors which deliver 150W each. The PEG Slot (or PCIE Slot) delivers whatever is remaining.
For 3-4 gpus this works out most of the time. But for 6 gpus i want to reroute the power from the motherboard to the psu.
(To see what happens google “melted atx”, the results will be self explanatory)
Powered pcie risers.
They are really expensive pretty much everywhere. They sell for 20$ and upwards.
i didn’t want to pay that money so i decided to do them miself. i bought cheap x1>x1 risers on amazon.
first you gotta cut/flex/break the back so the card will fit in.
The pin out is http://pinouts.ru/Slots/pci_express_pinout.shtml
i soldered a2,a3,b1,b2,b3 together on a female molex which i also got from amazon. (gotta love prime)
Here’s the result:
I noticed that some pins are lined up together on the pcie x1 risers, this does not seem to be a problem:
I will post pics when the rig is finally done!