before I get to ya question, I'd rethink the choice of the SC series card..... you are paying quite a premium for a factory overclocked card. But all the other factory OC'd cards from Asus, Gigabyte, MSI not only use great aftermarket coolers but also use custom PCBs and beefed up multi phase VRM circuitry whereas the EVGA SC just changes the cooler and uses reference PCB and stock VRM. That's why ya don't see it do to well when overclocked.
http://uk.hardware.info/reviews/4639/10/nvidia-geforce-gtx-780-asus-vs-evga-vs-inno3d-vs-msi-conclusion
All four manufacturers - ASUS, EVGA, Inno3D and MSI - made something special out of their GeForce GTX 780. The card that impressed us the most, however, was the ASUS GTX780-DC2OC-3GD5. The new cooler works like charm, and its performance is clearly reflected by the test results. The card also manages to stay very quiet and offers the best overclocking potential thanks to the new cooler. ASUS earns the Gold Award for its card.
We can't leave out the card from MSI. While it's slightly less overclocked and has less overall overclocking potential than the cards from Inno3D and EVGA, it's extremely quiet under load, the most silent of them all. It's also significantly cheaper than the other three, so if you're not planning on extreme overclocking, this MSI card is the best option.
An honorable mention goes to the Inno3D card. Out of the box it's the fastest, and while you can yourself get the other cards to the same level of performance, it's nice to have it guaranteed if you're not an experienced overclocker.
The EVGA ACX Superclocked also isn't a bad card. The only problem is that about the same amount of money will net you the ASUS card, a card which is superior in terms of cooling, noise and overclocking potential. EVGA will have to drop its prices to MSI levels to keep its card interesting.
If this is a gaming box, I'd switch to the MSI GD65 also ....
http://www.overclockersclub.com/reviews/msi_z87_gd65_gaming/12.htm
MSI has been using components that meet or exceed MIL-STD-810G for some time as part of its Military Class build philosophy. Parts such as Super Ferrite Chokes that run at up to 35 degree Celsius lower temperatures, have a 30% higher current handling capacity, and a 20% improvement in power efficiency; Tantalum filled Hi-C Caps that are are up to 93% efficient; and "Dark Capacitors" that feature Lower ESR and a ten-year lifespan all tied into a PCB with improved temperature and humidity protections as part of the "Military Essentials" package......In the end MSI's Z87-GD65 is a board that comes with an expansive feature set that includes all your basics and the extras that set them apart such as the V-Check points, upper end audio, Dual BIOS ROMs, KIller Network package, Military Class IV package, and a three-year warranty. Couple that with good looks that carry the dragon theme through the board, and you have a winning combination at $189.
http://www.overclock3d.net/reviews/cpu_mainboard/msi_z87_gd65_gaming_review/15
Now and again a motherboard appears that is so obviously brilliant, and so affordable, that we wonder if anything will be able to top it. For a while that crown was held by the ASUS Sabertooth, both in X58 and then P67 variants. Then MSI stole the crown with the Z77 MPower. Looking at the Z87 GD65 Gaming we think it's going to take something extraordinary to top it, such is the perfect storm of price, performance, features and looks.
The switch to Military Class 4 has given us an extremely ready overclocker too. You're always thermally limited when overclocking and the i7-4770K is one of the most demanding around. Considering the amount of cooling we're using we think that although the GD65 is capable of bringing 5GHz from our i7-4770K you'd need a proper water loop to make the most of it.
Performance is outstanding. The stock results were a particular highlight. We know a lot of people still just like to put their CPU in and go, without overclocking it first. Despite how easy it is these days we know that the fear factor still exists. So you'll be glad to know that the MSI Z87 GD65 Gaming really rocks hard even at stock settings. Naturally the overclocking is blistering too, with some OC3D records broken.
MSI have laid the gauntlet down to all the other manufacturers. Gorgeous to look at, blistering performance and all at a very affordable price, the MSI Z87 GD65 Gaming is not only the new benchmark for Z87 motherboards, but probably for all motherboards.
Finally for the same price ya can up ya cooler a bit
http://www.newegg.com/Product/Product.aspx?Item=N82E16835709011
Ok now to the fans..... hard question to answer not knowing how ya gonna run them, what noise you are willing to put up with, how high ya OC..... I have 5 case fans and 5 (pondering 10) rad fans with twin 780s and a 4770k....I don't think you wanna go there.
Overclocking makes heat .... figure max theoretical darw at 300 for the GFX at 20% OC and 135 for the 4670k..... If you wanna run the fans at low speed, and do big overclocks, I figure 75 watts per fan ... so 5 or 6 shud cover it.....I'd add (3) Phanteks SP140s in the top relocating the one that's there to the front. Grab a Fan PCB such as the ones from ModMyToys (FrozenCPU.com) or the Phanteks one coming out at the end of this month or just get 3 cable splitters and put 2 fans on each CHA header (also from FCPU) on the MoBo.
But again.....might as well try it like it arrives and see how it goes. That's what I did .... was planning 10 rad fans but I'm finding I do just fine with 5.....of course "fine' is a word some of us feel just doesn't quite cut it.