Gotta build a system for brother.
Found two mobos that I like (somewhat)
The major difference is that one has two x16 pci-e slots when using crossfire/sli another one x16 for solo and x8 in sli/crossfire
Might get solo 560 ti then maybe another 560 ti for sli.
Any feedback is appreciated.
I've done quite some research on this subject before I got my rig. But everyone that actually tested it came to the conclusion that the performance difference is neglectable. You're looking at a 2-3% difference. I myself run two 570's in 8x slots and have never had any troubles.
Edit:
Check this for example http://www.techpowerup.com/reviews/N...caling/24.html. Results show that running a 480 at 8x will result in a 1-2% performance los, but when ran at 4x the performance could drop 10% in the worst case. So if your card manages to push out a solid 60fps at 16x you would be looking at about 58-59 fps at 8x. To be honest if the price difference is too much just go for 8x/8x one.
You can also gain those 1-2 frames @ 8x by overclocking the card just a bit.
Last edited by Alfons; 11-08-11 at 04:19 PM.
like alfons said, if you go dual 8x the performance loss would be unnoticeable.
All tho dual x16 would be better, as long as the board isn't insanely more costly then the other. x8 means the bus runs with 8 lanes to transport 8bit data packets. x16 means the bus runs at 16 lanes. A little bit wider road for throughput, in short the comparison would be as of 32-bit processors vs 64-bit processors. Now what does this mean for my performance? Nothing major other then the bandwidth for your cards will be reduced greatly. A x8 version 2.x lane slot has a throughput of 500 MB/s per lane (8 x 500 = 3.90 GB/s). Meanwhile the native 16 lane slot version 2.x has a throughput of 8 GB/s out of the box. So your dual x8 slots would peek at 7.8 GB/s and the dual x16 would peek at 16 GB/s. Tho the slot can handle much more data, you probably wont notice much of a difference in frame rate. Tho the dual x16 slots would be technically better.Originally Posted by LightWarrior
True ^
Anyways dude, either is fine. Just dont base your decision on the pci-e lanes. If one of the two has more appealing features, and if the price is good, then just go for that one.
Alright. Technically dual x16 is better but in reality it's not a huge loss.
Then any advices for Z68 Micro ATX mobo without multiple sata chipsets, and support for cpu integrated graphics (which kinda looses the point of having z68)
This (Newegg.com - ASUS Maximus IV Gene-Z LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 Micro ATX Intel Motherboard) asus is great but 4 sata3.0 and 2 sata6.0 :\
If he doesn't need the rig right away. We are getting closer to Bulldozer time.
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