What is the difference between these two EVGA GTX 980 SC? (1982 & 2982)

Solution
As far as I can tell the 2982 is the same card just from a newer batch, and appears to have a back plate that the 1982 doesn't have. The tech goes though revisions, for example I had a first gen GTX 570 was a very long card, later I got a second to SLI with, the newer one was on a much smaller card, still had the same long cooler and everything they had just managed to get the same tech onto a smaller area, the card probably just costs them less to produce or even has slightly better life expectancy.

Vosgy

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Nov 24, 2014
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As far as I can tell the 2982 is the same card just from a newer batch, and appears to have a back plate that the 1982 doesn't have. The tech goes though revisions, for example I had a first gen GTX 570 was a very long card, later I got a second to SLI with, the newer one was on a much smaller card, still had the same long cooler and everything they had just managed to get the same tech onto a smaller area, the card probably just costs them less to produce or even has slightly better life expectancy.
 
Solution
Thats due to demand, almost nobody purchases reference cards.

When considering EVGA, all you really have to know are:
The reference cards (Typically not sought after)
ACX cards (Non reference)
ACX SC (Factory OC ACX cards, most commonly used)
FTW (Better OCing models)
and lastly
Kingpin (Elaborate PCBs for extreme overclocking)
 

Vosgy

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FTW models have the best factory OC on them, use EVGAs best custom heatsink and fans, and have very good power control and delivery. They can be OCed much higher then reference cards, and come out of the box much quicker too, thats why people like them so much, sadly if you add a OC card to the reference in SLI the OC one will be underclocked to match the reference in order to SLI correctly.
Kingpin are not for normal users lol.
 

Vosgy

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1266MHz with a boost clock of 1367MHz for super clock
1279MHz with a boost clock of 1380MHz for FTW (for the win)
1291MHz with a boost clock of 1393MHz for the Classified

they are minor changes, if not custom OCing get the cheapest, they all use the same cooler I believe.
 

iUnderclock

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they are all available with the acx cooler (although idk if they are the same acx cooler) but I have the other one.

By custom OC you mean flashing a custom bios? I am going to do what I always do, adjust precision x to get the most out of the bios that is installed. although gam3r01 mentioned the FTW has a better power delivery system, if thats the case I don't think they are very equal in that respective.