Buying used 10 series GPU

[MatiFu]

Hi!

I'm currently looking to upgrade my 1050 ti to something more powerful. I was thinking about a used Gigabyte GTX 1070 G1 Gaming but when i was searching through OLX (Polish equivalent of craigslist) i found a Gigabyte 1070 ti and even 1080 Founders Edition all for the same price (Around 250 Dollars after conversion). The 1070 G1 guy looks most trustworthy because he has a good story for his GPU and still has his receipt (Also he is selling other things on his account). The 1070 ti guy looks a little bit sketchy, he doesn't have any other items and claims to only using the GPU for half a year. As for the 1080 Founders Edition guy, he claims that the GPU was never used (It still has the protective film on the cooler) He is also selling Radeon RX Vega 56 for around 124 Dollars, also never used and in the box. 

 

I would like to get the 1080 but it looks sketchy AF. Can you tell me what to look out for and are those listings i mentioned a clear scam?

(Sorry if i made spelling mistakes, english isn't my primary language)

[Spakes]

Grab on USB stick with yourself some useful programs like HWInfo64, FurMark, GPU-Z and Unigine Heaven/3DMark (as well as some games, if you can).

If seller doesn't want you to allow to do some testing, send this guy to the hell and don't go to him.

Now when it comes to testing, you might want to look for 3 things: Info about card, temps and fan speeds, performance.

Technical info can be revealed by HWInfo64 and GPU-Z. Look for any inconsistencies in specs and if there are some, don't buy it.

Temps and fan speeds can be revealed by combination of GPU-Z sensors tab and really heavy stress test on GPU that is FurMark. Temperature shouldn't be higher than 90°C and spike instantly. Instead you should see increase in temps that look like y=sqrt(x) and establish at one point after 5-15 minutes. If it is good there, go to perfomance tests.

If tests show scores lower than usual, you might want to recheck what is wrong. Maybe power plan was not on High Perfomanmce, maybe there are problems with P-states, or, worst of all, it's not what it says it is (for example, GTX 650 with 1 GB of GDDR3 memory and 384-bit bus isn't real GTX 650, it was BIOS-hacked).

[MatiFu]

I got the 1070 G1 Gaming as the Guy with the 1070 Ti honestly told me he was mining on it and the 1080 guy never answered to me.
Card works just fine boosts like it should and overall looks to be in a great condition 
 

Thanks @Spakes for the help!

Thread closed.

[Spakes]

7 hours ago, MatiFu said:

Thanks @Spakes for the help!

Any time. You're welcome.)