Hello, my board just died on me and I noticed bad caps.  I want to replace them since my board is no longer under warranty.  I'm not able to find the exact same caps since they are obsolete and no longer in production, but I have found substitutes for two of them.  One of them though, I can't find any info on, no data sheet, nothing.  The Rubycon MFZ 6.3V 2700uf.  Does anyone know what the ESR and Ripple are on this?  If I can get that I can easily find a sub.
 
Thanks

Those caps are available at eBay: http://www.ebay.com/itm/like/231333794718?lpid=82&chn=ps&ul_noapp=true
 

Order a reputable Japanese capacitor of same rating from Digikey. It's really quite pointless to ask here. You can help yourself much better.
 
Capacitor tiered ratings (high to low):
http://www.tomshardware.com/reviews/power-supplies-101,4193-5.html
 
Here are some of the highest rated capacitors on Digikey of similar type which should do the job:
http://www.digikey.com/product-search/en/capacitors/aluminum-capacitors/131081?FV=340087%2Cfc0021%2Cb54000e%2Cfff40002%2Cfff80009&ColumnSort=-1000011&page=1
^^ the first three in the list look like a winners with high ripple current handling abilities and low impedance.
 
Rubycon is a good manufacturer and the original capacitors are rated well.  All capacitors will fail.  That is a guarantee.  I wouldn't avoid Rubycon just because yours failed.
 
Your motherboard has been around for 9 years.  The capacitors on your motherboard were only designed to last a little over a year of power-on-time at max temperature (and the NVIDIA 600 series boards did run very hot!!).  And those were good capacitors compared to some other options out there.  You can find much worse capacitors with lower life expectancy.  Like I said, all capacitors WILL FAIL.  Guarantee. 

Well, it's a good thing it's been out of use for almost 6 years now -since the 2 rubycon 2700uF capacitors blew. I will get a cooler case setup going to help as well. Probably something nice I can use for my next PC system, and with a really good cooling system --which I haven't looked into yet. Another factor is that the place I moved to has power outages a lot in the summertime so a good UPS will help keep my old 680sli alive as a linux backup for my current comps. I should probably reduce the power supply too, and keep only 2 SSD drives in it --I had 3 7200rpm HD's in it before.
 
Since I'm repairing my Samsung monitors capacitors that blew around the same time, depending on the heat, I don't expect them to last for more than 4-5 years I suppose? I expect the entire motherboard to last a few more years at least maybe with a few more capacitor replacements if something else doesn't burn out.
 
Thanks for the links and info ty_ger07, and I was able to find em on eBay so also thanks Zhul3156!
 

Rubycon are probably the best with nichicon right behind them, look for low ESR or even solid caps, I have done many boards and other devices. Check out badcaps.net for complete kits of high quality caps and great links to the best ones. And there is nothing wrong with repairing a board that old, they were good back in there time