Looking to rent GPU Server 4 hashcat.
I am looking to rent a GPU Server I have searched the internet and found a decent  host on hostkey.com for 4x gtx 1080 for $310 a month, Before i commit to it does anyone know or want to rent out a server to me, for two weeks to four weeks for around the same price or better? or does anybody know of a better gpu server rental place. I want to run hash cat with bruteforce mode about 1-8 characters incremental on a on my wallet. does anyone know how long it would take for a brute force attack with all ?a for 10char is it under a month time on 4x 1080 or would i need more gpus.

-Thank you.
You are asking a lot of things here but I'll cover probably the most important part.

Bruteforce of ?a length 10 is not going to happen on pretty much any wallet variant, and bruteforce of ?a 1-8 is unlikely as well. Most of the wallet formats available in hashcat are simply too strong(slow) to allow for such attacks. Especially on a rig of only 4x 1080.
Some server charge by the hour or minute some charge by the week something like .11cents or $6 an hour how much time would i need on 10x 1080... for 8 char ?a or 10 ?a brute
"hour how much time would i need on 10x 1080... for 8 char ?a or 10 ?a brute"

Let's calculate this:

Hashcat supports these:
-m 11300 = Bitcoin/Litecoin wallet.dat
-m 12700 = Blockchain, My Wallet, $blockchain$...
-m 15200 = Blockchain, My Wallet, V2, $blockchain$v2$...
-m 15600 = Ethereum Wallet, PBKDF2-HMAC-SHA256 $ethereum$p*...
-m 15700 = Ethereum Wallet, SCRYPT
-m 16300 = Ethereum Pre-Sale Wallet, PBKDF2-HMAC-SHA256
-m 16600 = Electrum Wallet (Salt-Type 1-3)
-m 18800 = Blockchain, My Wallet, Second Password (SHA256), (base64 output of btcrecover for blockchain 2nd pass)

You didn't mention which you use, so for your sake I will assume the fastest one. (from benchmarks this seems to be the Blockchain, My Wallet).

For the Nvidia GTX 1080 Ti (stock) this is about 72361.2 kH/s (https://gist.github.com/epixoip/973da735...7527e4d073).

Let's be generous and multiply it by 10 and round it up significantly. So we are working with 730000 kH/s.

Now calculate how many possibilities there are in "8 char ?a or 10 ?a brute":

?a = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~
This is 95 possible chars. 8 positions is 95^8 and 10 is 95^10.

95^8 = 6634204312890625
95^10 = 59873693923837890625

6634204312890625 / 730000 kH/s = 9087951113 seconds = 288 years
59873693923837890625 / 730000 kH/s = 82018758799777 seconds = 2601 million years

I'm going to assume you don't want to wait 2601 million years but do want to spend 288 years. So let's find how much it will cost for hostkey.com @ 4x gtx 1080 for $310 a month. I got a good deal so I get 10x gtx 1080 for the price of $775.

9087951113 seconds @ $775 a month = $2679950 = 2.6 million dollars and 288 years.
I've made account just to reply
I have spare 8x1060 and 7x1060 rigs for you
contact me on telegram if possible @knottygeek
But as others said, it's not very likely to be cracked. But i have some people renting other rigs from me and they crack wallets here, so it needs to be kinda profitable i guess