Shall I already look for an 7-family (Ivy) of MB or shall I go for a 6 family (Sandy)?
I'm still on a old Pentium 4, and my MB is an old ASUS, P5... the change wil be there anyway but.
If I can save some money on the MB, I could invest it on GPU .. And on the balance, the new chipset will allow all the new features for an evolutive machine... Because the difference is not so high, but (10+10+10+10+10 USD/EUR/GBP can allo you to invest more in another component)
But I have the feeling this will be also more expensive than now, and since I'm not te be on the point of technology (and because my old Pentium 4 is dying every evening when I4m playing ) I would go for Ivy
1) Diff between IB and SB as far as CPU performance is concerned not a biggy between 5 -> 10 pecent for equivalnt speeds. NOTE - SB cpus will generally OC higher an easier than IB. For Small diff (at same speed) yes I'd go for IB cpu.
2) the real question is On MB, Yes the IB (7 Series is The choice) regaudless of SB or IB CPU. NOT because of CPU performance, BUT:
.. Pcii-e 3.0
.. Native support for USB3.
.. Increased Sata III ports.
.. Improved Chipset (for HDD) which provides a small boost (Probably not noticable) for SATA III SSDs.
Another diff between IB and SB used in 7 Series MB. is selection of Ram.
Specs for SB is DDR3-1333 @ 1.5 V (using DDR3-1600 voids SB Warrantee
Spec for IB Ram is DDR3-1600 @ 1.5 V and above 1600 voids warantee.
This is not a biggy as again outside benchmarks, not a big performance diff between 1333 and 1600 Ram
^ Concur you need BOTH a X7 series MB and a IB CPU for pci-e 3.0. The 7 series MB uses PLX chip set to controll the lanes. Quote form Anandtech "The forty lanes from the CPU are split into two lots of 16 for the PLX chips, and 8 lanes to the LSI chip"