Last year I got a Gigabyte GA-57SLI-S4 motherboard only to find the second PCI-E slot was 8x and not 16x like several other websites said. It made my second 8600 useless. My question now since I am building my next comp is whether or not the Intel DP45SG MB is a true 16x board.
If you own or know if this board is dual 16x then please let me know.
My next build will be:
850 WATT PSU
Intel DP45SG MB
ATI 4850 IceQ4 Edition X2 Graphics cards
Patriot Viper Series PC3-10666 DDR3 x2 1gb
Its my understanding that the 35/45 CF boards are 8x/8x, while the x38/x48 boards are 16x/16x.
I laughed at your post a bit, because it doesn't make much sense to me. Even if the second slot is 8x instead of 16x, the 8600 is such a low end card that this shouldn't matter. 8 PCIe lanes isn't going to hold the 8600 back. I don't see how this made your card "useless".
You didn't come in here asking that question, but your asking the wrong question. What I tried to tell you is that it doesn't matter what motherboard you put two 8600GT's into, they still suck. With good/high settings, they will not allow you to play Crysis at 1680x1050 at 30+ FPS. It has NOTHING to do with the motherboard, it has everything to do with the low end 8600GT. Its been awhile since I've looked at 8600GT SLI scores, but the 9500GT is very similar.
Lets pretend for just a second that you could actually get perfect doubling of the frame rates with SLI. In this case, that 9.11 would get doubled to 18.22, still to slow. Even if you game on a lower res monitor, 12.6 doubled is only 25.2, still sub 30+. Worse, you should know that SLI doesn't perfectly double your score, so you are looking at probably 13-15 at 16x12, and 16-19 for 1280x1024.
If you want to play Crysis at 30+, dump the low end SLI idea and just get a more powerful card. Seeing as you want to spend ~$200 on a new motherboard, spend it on the 4850. This will handle Crysis just fine.
Seeing as you are talking about your next build, you don't need to worry about getting the x48. The x2 doesn't need a CF motherboard. Any P35/45 will do fine. I personally wouldn't spend ~$200 on a motherboard if the new x58 series is coming. Upgrade options will be limited for such an expensive board.
You can "extreme overclock" a crap card, but you'll still get crap frame rates.
I don't understand what your asking. You want a 16x/16x motherboard, but are getting the x2 so you don't need to worry about the other PCIe slot. Seeing as i7 is coming, I would NOT get the $200 motherboard, but a nice cheap P35. Should be $100 tops, and will run your x2 with ease.
An E8600 and the 4850x2 should handle Crysis at most resolutions just fine. The 4850 is quite a bit more powerful then the "junk" 8600 you've been dealing with. I wouldn't bother getting DDR3, 4GBs of DDR2 is much better.