Bitcoin Forum

I'm looking at adding more video cards to my rig, but I am going to be adding them one by one instead of all at once.

Based on price and hashrate for scrypt, I'm thinking the better way to go is 3x7950s (~$960) since I've seen others able to get about 700khash/s with overclocking.  What do you think?

I'd go for the 7950's.

did you miss the newegg sale?

What about get a 7990?

@Invest0r: Thanks for the input. :)

@Starlightbreaker: What were they selling for?  I always seem to miss good opportunities. :(

@rgzen: Haven't seen any for sale yet, and I'm sure the price would be insane.

Is the investment worth it? What are your earning predictions?

7950s all the way ...for me at least .I  can say these cards seem to perform very good especially in scrypt . On the other hand I seen many people complaining about the new 7970s  locked or underperforming.

@Caesar V: With all 3 + my 5870 I already have, currently it would be ~$60/day or 12.6 coins/day.  If it pays for itself in 16 days ill be more than happy. :D  Even with just 1 which I am planning to start with at first will pay for itself in ~13 days.

@juve4v: Thanks for the info. :)

First 7950 on the way, glad I waited until I did since the price dropped $30. :)

Thanks again everyone!

Can cards be mixed?

I have a 7850 which I am going to use for LTC mining. My board can take another card.
Can I put in a 7950 alongside it or do both cards *have* to be the same?
I can get a 2nd 7850 fairly easily.

Thanks.

jap should work.

i got 1x 6950 und 1x 6850 on the same board and they are mining quite well :)

I believe the only time that it matters is if you're doing crossfire, but even then I think certain ranges of cards can be mixed, like a 5850 and 5870 for example.  For mining it doesn't matter if you mix.