You woudlnt notice a performance differnece between 8x and 16x with a PCI-E 2.0 slot with a ATi Radeon 5850, maybe when using a Radeon 5970. At most you will lose 1-2 FPS if any. Choose the motherboard which has the features you want.
Can you link your motherboard you are talking about?
I only know of the first releases of Gigabyte USB 3.0 boards that were effected by a Cossfire/SLI setup only (single was just fine). They would drop down to 2.0 studs at that point. Their current newer boards are not effected like by this now.
These are mobos that i stuck to choose them for 5850 & i5 760 .
1. GA P55A UD3
2. ASUS - P7P55D-E
3. GA-P55A-USB 3
I only stick with ASUS & GIGABYTE , i removed 4. MSI P55A-GD65 from list , because MS motherboards BAD QUality , just tell me which of those mobos are great ? & after that Compare GIGA USB 3.0 & UD 3 ( 1 & 3 ) . thanks
Thanks , can u say what i gonna lose if i gonna have to go for GIGA ( budget Limitaion ) , i realy wanna get most Abilities , best speed & performance , fast transfer rate & full VGA & CPU usage with no Performance drop .
i dont know if reducing to 8X is big matter or not ?!?!
Reducing to x8 will not make a difference. Just like Snipergod87 said, even using a super powerful card like an ARI 5970, you would barely notice the difference. With my 6870 at 16x and at 8x, I noticed no difference at all. Same FPS, same marks in 3DMark06, same score in Unigine Heaven Benchmark.
In canada haha, was released over the weekend if I'm not mistaken. Got it from a local computer shop and I'm running it in x8 mode right now due to how the slots work on my motherboard. Runs like a dream and out-performs my super overclocked dual 5750 setup.