Help me in Buying Mining Hardware !

[PTseller]

Hello Friends finally i have collected money to buy a nice mining PC ! For that i need help from you guys, so here is my list of configuration which i have collected from this forum List are as below !!

1-> 5 Slot motherBoard gigabyte 970A

2-> 3 GPU -> AMD R9 280x ( sapphire or Asus or MSI )

3-> RAM -> 4GB DDR3 ( Corsa or G.Skill )

4-> Processor -> AMD x2 270

5-> Power supply -> 850 watt ( sonic or corsair ) Gold

Please suggest me if anything else has to be there, or should i need another version of this product ? please comment below if this required more Ram , another processor or Motherboard ! i will be very thankful to you guys

Regards'
PTseller

[Galgenfrist]

Hello!
yes 4GB RAM is indeed too small I think. Increase it to 16GB (if you can) to be comfortable, but maybe 8GB may suffice for 3 280x I don't know. Also, AMD Sempron 145's power consumption is lower.

[PTseller]

Hello!
yes 4GB RAM is indeed too small I think. Increase it to 16GB (if you can) to be comfortable, but maybe 8GB may suffice for 3 280x I don't know. Also, AMD Sempron 145's power consumption is lower.

Thanks man really appreciate ! i'll keep in mind ( AMD Sempron 145's) thank you !! anything else needed to be correct ?

[maardein]

Hello!
yes 4GB RAM is indeed too small I think. Increase it to 16GB (if you can) to be comfortable, but maybe 8GB may suffice for 3 280x I don't know. Also, AMD Sempron 145's power consumption is lower.

Seriously? My cgminer is using 24mB of ram with ~800kh/s.

[PTseller]

Guys please really need help i want to buy PC in 2 days !!

[Galgenfrist]

Hello!
yes 4GB RAM is indeed too small I think. Increase it to 16GB (if you can) to be comfortable, but maybe 8GB may suffice for 3 280x I don't know. Also, AMD Sempron 145's power consumption is lower.

Seriously? My cgminer is using 24mB of ram with ~800kh/s.

Yes you're right, I just checked and cgminer uses ~20mB for my single GPU. But I was just saying this because from what I've read here and there many people encounter problems with low RAM system (4GB or less), even with only one GPU.

[kelvinliong]

Hello!
yes 4GB RAM is indeed too small I think. Increase it to 16GB (if you can) to be comfortable, but maybe 8GB may suffice for 3 280x I don't know. Also, AMD Sempron 145's power consumption is lower.

LOL 16GB RAM!

[SheepOnDrugs]

AMD Sempron 145 Processor is way cheaper.
2GB Ram are sufficient if you're planning to run Linux.
I would recommend this Motherboard: ASRock 970 Extreme4
Btw you should get some extra cooling and risers. Risers are probably the most important thing.

[joe42strong]

gigabyte 970A ?

i only see 2 PCI-e slots. Did you find aother board with same name? For 2 GPU fine with me....

[MadMatt]

I run the 970A with 5x 280x's from sapphire and 2x 750w Gold PSU's. Just get the cheapest CPU that has the same socket type as your MB. You definitely don't need 16gb of ram, I use 4gb. Everything looks good though. You'll need 3 16x-1x PCIe Risers though to keep them cool, you can use the 1x side in the 16x slots and it won't lower any performance

[PTseller]

I run the 970A with 5x 280x's from sapphire and 2x 750w Gold PSU's. Just get the cheapest CPU that has the same socket type as your MB. You definitely don't need 16gb of ram, I use 4gb. Everything looks good though. You'll need 3 16x-1x PCIe Risers though to keep them cool, you can use the 1x side in the 16x slots and it won't lower any performance

thanks man really useful for me ! can you share with me best setting for cgminer to run 2 gpu R9 280 XFX

[SheepOnDrugs]

-g 2 -w 256 -I 13 --lookup-gap 2 --thread-concurrency 8192 --gpu-engine 1060 --gpu-memclock 1500 --auto-fan --temp-cutoff=95 --temp-target=80

Those are my settings for the R9 280X XFX. Getting around 730 khash