# Buying second hand mining rig **URL:** \ **Category:** Mining\ **Created:** [August 9, 2019, 6:00pm UTC](https://forum.grin.mw/t/buying-second-hand-mining-rig/5817 "2019-08-09T18:00:51Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![q8overseas](https://avatars.discourse-cdn.com/v4/letter/q/df788c/32.png) [@q8overseas](https://forum.grin.mw/u/q8overseas)\ **Post date:** [August 9, 2019, 6:00pm UTC](https://forum.grin.mw/t/buying-second-hand-mining-rig/5817/1 "2019-08-09T18:00:51Z")
I’m in the market to buy and set up my own little rig at home and a friend offered to sell me his. Could someone advise me if the following worth it or I should build a new one with higher specs: Cpu celeron g3930 Ram hyperx ddr4 2x8gb Motherbord asus b250 mining expert Gpu msi 8x1080ti Power supply 1x 1000w 2x 850w 1x 550w Regards ---
**Author:** ![0xb100d](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.grin.mw/0xb100d/32/364_2.png) [@0xb100d](https://forum.grin.mw/u/0xb100d)\ **Post date:** [August 9, 2019, 9:43pm UTC](https://forum.grin.mw/t/buying-second-hand-mining-rig/5817/2 "2019-08-09T21:43:39Z")
how many GB are the 1080s? ---
**Author:** ![amamam](https://avatars.discourse-cdn.com/v4/letter/a/e19b73/32.png) [@amamam](https://forum.grin.mw/u/amamam)\ **Post date:** [August 9, 2019, 9:52pm UTC](https://forum.grin.mw/t/buying-second-hand-mining-rig/5817/3 "2019-08-09T21:52:50Z")
> [@0xb100d](#): > > how many GB are the 1080s? 1080tis are only available on 11gb if i recall correctly > [@q8overseas](#): > > Ram hyperx ddr4 2x8gb > Motherbord asus b250 mining expert > Gpu msi 8x1080ti > Power supply > 1x 1000w > 2x 850w > 1x 550w mining rigs usually fit only 2 psus, so you’re going to need 2 really big ones for those 1080tis which use about 250w each, i’d recommend 2x1200w at least celeron isn’t enough for mining grin, get something more powerful the b250 i’ve heard many horror stories, i’ve used only the Asrock H110 Pro BTC+ and never had problems also 16gb of ram seems like a lot, 4 or 8gb is enough just my first impressions, not sure if all of this is 100% accurate, it’s worth waiting for someone else to reply ---
**Author:** ![polkhigh4td](https://avatars.discourse-cdn.com/v4/letter/p/e9c0ed/32.png) [@polkhigh4td](https://forum.grin.mw/u/polkhigh4td)\ **Post date:** [August 10, 2019, 3:56am UTC](https://forum.grin.mw/t/buying-second-hand-mining-rig/5817/4 "2019-08-10T03:56:24Z")
> [@amamam](#): > > celeron isn’t enough for mining grin, get something more powerful What CPU requirements are there for mining? Why do you say he should get something more powerful? ---
**Author:** ![noobvie](https://avatars.discourse-cdn.com/v4/letter/n/9d8465/32.png) [@noobvie](https://forum.grin.mw/u/noobvie)\ **Post date:** [August 10, 2019, 3:49pm UTC](https://forum.grin.mw/t/buying-second-hand-mining-rig/5817/5 "2019-08-10T15:49:01Z")
Pentium G4600 kabylake, and RAM 4GB is enough ---
**Author:** ![polkhigh4td](https://avatars.discourse-cdn.com/v4/letter/p/e9c0ed/32.png) [@polkhigh4td](https://forum.grin.mw/u/polkhigh4td)\ **Post date:** [August 10, 2019, 4:50pm UTC](https://forum.grin.mw/t/buying-second-hand-mining-rig/5817/6 "2019-08-10T16:50:57Z")
> [@noobvie](#): > > and RAM 4GB is enough Wrong. He would need at least 6GB to mine on CuckARoo, but I think 8GB is preferred. > **[How to mine Grin](https://github.com/mimblewimble/docs/wiki/How-to-mine-Grin)** > > Documentation for Grin and Mimblewimble. Contribute to mimblewimble/docs development by creating an account on GitHub. ---
**Author:** ![Shobji](https://avatars.discourse-cdn.com/v4/letter/s/ac91a4/32.png) [@Shobji](https://forum.grin.mw/u/Shobji)\ **Post date:** [August 10, 2019, 6:03pm UTC](https://forum.grin.mw/t/buying-second-hand-mining-rig/5817/7 "2019-08-10T18:03:02Z")
Yes fine if your are really getting total package at very low price. PSU you need total 2500watts so three are enough (1000+2x850).