You want to build a cracking rig, right? So cracking performance should be No. 1 on your list. And that configuration by netmux is rubbish and totally wrong for that budget. There is a big trade-off from cracking performance to reliability (and wrong components). Most of the money is spent on an expensive server rig that deoes not serve you any value in performance.
1. Always buy the GPU with the highest performance/value and calculate your rig in. Therefor in almost every case you have to go with the GTX 1080Ti. Two of them makes ~4x GTX1070 performancewise. Take a decent case, a nice PSU, a usual CPU/MB combo, some SSD and some RAM and you land at around $2k. Same performance as that 5k-rig for less than half the price.
2. If you want to improve reliability, get a premium PSU and a very good mainboard with high quality transistors and stuff. Put lots of fans in your case, front, bottom, back. Front/bottom blowing in, back out. Keep the area around the system clean and free of dust. Keep the room as cool as possible. Maybe even buy a UPS (but those bastards sometimes turn out to be a SPoF themselves).
3. Aleways buy FE-cards with radial fans. Nothing else. Brand technically doesn't matter, but there are some that offer 5yrs warranty for free if you register the cards. That's always a nice goody to offer if you sell them one or two years later.
4. Oversize your PSU. For three GTX1080 Ti get >1500W. Get 2000W for 4 GPUs. Buy at least platinum level. Electricity is a crucial cost factor when it comes to 24/7-cracking. A percentage difference in efficiency usually pays of in the long run.
5. The best compromise and less trouble with heat is to put three GPUs on one MB, with one slot space between the cards. If you put in four, get better cooling and make sure you know what're doing.
6. CPU performance is negligible if you don't plan to use it for cracking. 32GB RAM should be fine. SSD doesn't matter, neither speed nor size. 128GB is usually more than enough, 256GB completely fine, even if you start collecting wordlists.
Here's what I would do:
- Mainboard $300
- CPU $300
- RAM $200
- Case $100
- PSU $300
- SSD $100
- Cooler $100
- 3x GTX 1080Ti $2100
That's roughly $3500. You could even through in another Ti and stay well below your 6.5k budget. If something breaks down, replace it. Nothing is bulletproof, not even that 5k-rig. More expensive does not mean more reliable. If you don't earn money with it, than down-time costs you $0.
1. Always buy the GPU with the highest performance/value and calculate your rig in. Therefor in almost every case you have to go with the GTX 1080Ti. Two of them makes ~4x GTX1070 performancewise. Take a decent case, a nice PSU, a usual CPU/MB combo, some SSD and some RAM and you land at around $2k. Same performance as that 5k-rig for less than half the price.
2. If you want to improve reliability, get a premium PSU and a very good mainboard with high quality transistors and stuff. Put lots of fans in your case, front, bottom, back. Front/bottom blowing in, back out. Keep the area around the system clean and free of dust. Keep the room as cool as possible. Maybe even buy a UPS (but those bastards sometimes turn out to be a SPoF themselves).
3. Aleways buy FE-cards with radial fans. Nothing else. Brand technically doesn't matter, but there are some that offer 5yrs warranty for free if you register the cards. That's always a nice goody to offer if you sell them one or two years later.
4. Oversize your PSU. For three GTX1080 Ti get >1500W. Get 2000W for 4 GPUs. Buy at least platinum level. Electricity is a crucial cost factor when it comes to 24/7-cracking. A percentage difference in efficiency usually pays of in the long run.
5. The best compromise and less trouble with heat is to put three GPUs on one MB, with one slot space between the cards. If you put in four, get better cooling and make sure you know what're doing.
6. CPU performance is negligible if you don't plan to use it for cracking. 32GB RAM should be fine. SSD doesn't matter, neither speed nor size. 128GB is usually more than enough, 256GB completely fine, even if you start collecting wordlists.
Here's what I would do:
- Mainboard $300
- CPU $300
- RAM $200
- Case $100
- PSU $300
- SSD $100
- Cooler $100
- 3x GTX 1080Ti $2100
That's roughly $3500. You could even through in another Ti and stay well below your 6.5k budget. If something breaks down, replace it. Nothing is bulletproof, not even that 5k-rig. More expensive does not mean more reliable. If you don't earn money with it, than down-time costs you $0.