unfortunately my motherboard (MSI DKA790gx) has 2 pcie slots with crossfire enabled, but is limited to 2 x8 lanes when 2 cards are used, and one x16 when one card is used. I am wondering if this will degrade performance much when using 2 radeon hd 4850's such as this one: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
I can get 2 of them for less than the cost of a gtx 260, which is what i'll probably get if I decide to use just one card.
can someone help me out on decidng which to get? i'm really leaning towards nvidia, as most games I will play perform better with them, but I am certainly open to ati if I can get more performance for the same money.
Now, honestly, who designed this motherboard... first, the ram slots are too close to the cpu socket, so when using a performance cooler it has to be put on backwards, so it blows toward the front of the case.
second, the pcie setup is like this:
with no space between the bottom x8 slot and the pci slots. so when using 2 cards that take up 2 slots each, theres an extra slot above the second one and it disables one of the 2 pci slots which I need both of. this would take an extra investment of a usb wifi card or tv tuner, whichever is cheaper. I wish I had bough a proper designed sli board, but I hadnt dreamed of using 2 video cards when i bought it, and the motherboard was a steal at $85.
his one is nice, I looked at it, but quite a bit more expensive. I am trying to keep this under the cost of a gtx 260 so I can justify it hehe. The MSI I chose for the one slot size, as my second pcie slot is right next to where my precious 2 pci slots start. I have a wifi card and tv tuner. I dont want to resort to usb for either of those.
Also the asus card I listed (overclockec at 680 mhz) with a silly looking fan is only $110 open box right now. HIS makes a one slot 4850, but its more expensive. anyone have experience with any of these cards? or an answer to the one card factory overclocked, one card base question?
thes setup should also be considerably cheaper than a 4850 x2 at $~300. the sapphire one has quad dvi. this is nice, especially because crossfire currently dosen't support dual monitors, let alone quad monitors