Upgrading GPU, help needed.

Will your PSU be enough to handle it though?

Still, you should check if you can't get something newer for the same price. Even if it will be a little bit slower in some benchmarks, it will be worth it, if it's a single GPU.

A loooooot of problems. When one GPU isn't just not working in a game, there are stuttering issues, poor performance, bad drivers, huge power consumption, etc...

Oh my, go for it!

Hmm, I was going to say don't waste your money, but at that price you really have nothing to lose. I assume someone's upgrading to a 980 and wants to unload his old card before it's worth nothing at all... :)

It's a huge upgrade from a 5870. If you can handle LEGO you can change a video card. :) But be sure your power supply is up to the task (two 8-pin power connectors, and 365W maximum power draw for this card!)

That 590 is the equivalent of two underclocked 1.5gb 580 cards in SLI - underclocked so it doesn't melt... :) It's 3.5 years old, which is a long time in computer years. If you have a 720p display you may be able to run everything at max settings, but don't expect miracles at 4k, or even 2560x1600...

By the way, I'm (still) using two 580 cards in SLI, and for new games I can't run everything at max. For new games I have to turn down the fancy graphics options, lower the resolution to 1920x1200, or make some other compromise. And when the cards are both running at 100% they get hot, and the fans are loud. They aren't junk, but I'm definitely looking at the new 980 cards... :) Have fun! :)

That's a pretty good deal, but realistically you should know that you might be in for more headache than you expect.

Dual GPU cards act, as far as a system is concerned, as if you are using two graphics cards at the same time (Called SLI for nvidia and crossfire/crossfire-x for AMD). There are a number of issues that come from those setups you'll see people complain about - most typically is microstutter, which is something akin to graphical lag that occurs because of irregular frame cycling between two separate GPUs.

However, because you're also going to be using such an old dual-GPU card, you should also be aware, there are programs that will not use SLI/Crossfire at all. What that means is, for any programs you are trying to use that do not support SLI/Crossfire setups, they will only use one card, or in your case only one of the two GPUs on the card. Where that happens, you will effectively see very little actual improvement at all over your 5870, and only because of the extra GDDR the new card will provide.

All things considered, I think you're likely safe, since the majority of games will accommodate SLI/Crossfire setups, so in those you will see a considerable improvement. And at only $60US effectively, it would be very hard to find a card that would give you comparable performance so cheaply.

I got it for 400 NOK, wich is about $60. And it was a Gainward card.