Here are mine, in somewhat substantial, yet chronological order:
Voodoo 4 4500 PCI: my first discrete gaming card. Before that, I had whatever onboard crap my old PC was shipped with. For me, the Voodoo 4 4500 PCI was one of the most memorable card purchases- I could play Command and Conquer Red Alert, Unreal Tournament and Quake 2/3 without visual deformities and at decent image quality.
Radeon 8500LE - 128mb: this was my first jump into AGP graphics. I wanted a 4600 Ti, but got this instead. (budgeting in college sucks)
BFG 5800, otherwise known as the leafblower. It was loud as hell, very hot, and prone to graphic tearing and anomalies. I recall my apartment getting quite hot during long gaming sessions and hearing the whine of the cooler through my case and headphones. Oh, I bought a Razer Boomslang mouse at the same time. Anyone remember those?
BFG 6800 GT: (at this point forward, all cards will be watercooled)
The next big step came with my 6800 GT - I remember getting this for a LAN party and dropping it in, only to be disappointed over the comparison to the 5800 it was replacing...then I realized I needed to update my motherboard drivers, and saw a 50% increase immediately. I recall closing on my first house a few days prior, so I bought a new GPU as some sort of reward for adding a huge chunk of debt to my life.
EVGA 7900 GT - I have almost no memory of this card other than knowing I spent money on it.
EVGA 8800 GTS: the GTS was a good card for those would couldn't afford the 8800 GTX/Ultra and wanted more than the GT. I always felt this card should have been more than it was, but sadly, wasn't.
EVGA 9800+ GTX (x2 SLI) - Got a new credit card = let's buy computer parts and while we're at it, make it a dual graphics card setup. My first SLI setup, both were watercooled with universal waterblocks...RAM sinks on the vRAM.
GTX 260 core 216 (x2 SLI) - I feel like there was a card between these 2, but pretty sure there wasn't. Again, SLI and watercooling. Decent performance of the day, kind of like the 1070's of the 10-series. I waited, and waited, and waited for these to come back into stock on Newegg so I could buy a pair instead of the vanilla 260. I was glad I did, but couldn't explain to others 'why'.
EVGA GTX 560Ti (x2 SLI) - I would almost copy/paste the same here as for the 260's above. Nothing notable other than being decent price/performance parts. For what I paid for SLI cards, I should have just got a 580. Shame on me.
EVGA GTX 770 - back to a single card...tired of that SLI nonsense. A good card for its time, my son actually still runs this in his rig.
EVGA GTX 1070 FE - just recently had this card. A lot of fond memories - would likely still use this today (Feb 2019). Very capable, almost overpowered for its tier. I really, really, REALLY loved this card. Maybe the most enjoyment that I've had cumulative to any one single card I've ever owned.
EVGA RTX 2080 - jury is still out on this one. I really like the 4k gaming on some titles, others it doesn't impress any more than the 1070 did. Seems to run a bit warm, even with a full cover waterblock. I want to like it because of the $800 it costs (plus the +$130 for the water block). It's a strong card that I can tell isn't even stretching its legs yet...more will have to come to prove the power it has.