Originally Posted by EviloneX
First I was recalling old Overclockers' lore from former ddr2 sticks with high speed and low voltage(this sounds a lot like former debates regarding that past situation) and second get a better motherboard. Any Gigabyte mobo will allow you to run your desired specs nowadays. ASUS is known to be really troublesome with ram oh I recall those days when they rma'd 8 of every 10 mobos they sold because of that. And that's WHY you get low voltage modules to avoid qpi/dram issues. But its great to see someone arguing with real numbers intead of subjective words like "negligible" and "minimal" i give you that.
Okay you need to read up on how the IMC works on Socket 1366 Core i7's. The motherboard doesn't really affect how fast the ram can run as the Memory Controller is not on the motherboard but is actually integrated on the CPU itself. Now if there were low quality ram slots, then of course that would limit the ram speed, but the RIIE is actually second only to the EVGa Classified and even that is debateable.
The IMC on the Socket 1366 Core i7's (Notice that I specifiy Socket 1366, because the socket 1156 Core i7's seem to have resolved this issue, but only run dual channel DDR3 anyway) ussually start to run out of gas between 1750-1850mhz. The QPI/DRAM voltage need becomes excessive and if you look at most of the XMP (Extreme Memory Profiles), they actually set around 1.59v for QPI/DRAM in order to run 2000mhz at a stock CPU speed.
As for the "get a better motherboard" comment, this is one of the top 2 best Socket 1366 motherboards period. The gigabyte boards actually seem to be having alot of problems with overclocking this time around. The EP45-UD3P was the king of Socket 775, but Gigabyte doesn't seem to be having a good bout this time around and I have helped countless Gigabyte owners try to stabilize their CPUs rather than RIIE owners.
The asus comment about RMAing 80% of their motherboards comment is actually not true at all. Every company does go through their string of bad batches, but any company that would legitimately have an 80% return rate would go under or be forced to stop selling the product due to loss of profit, which obviously didn't happen. Asus makes good boards and you'll see that some of the highest overclocks are achieved on Socket 1366 Asus boards.
Things that were true with Socket 775 are not necessarily true with Socket 1366.
Let me repeat myself for the second time however. All 6gb DDR3 ram kits designed for the Core i7 CPU are Low Dram Voltage (Not low QPI/DRAM voltage)
and must be by default from the 0.50v issue with the VTT and DRAM. All tri-channel kits must be 1.65v or lower in order to meet this specification. The 1.65v rating is the DRAM voltage required to run the sticks and not the QPI/DRAM voltage required, because the QPI/DRAM voltage required to run the sticks at that speed is based upon each CPU and not the ram sticks themselves.Edited by ChickenInferno - 12/19/09 at 8:38am