^ Not what several posts have indicated.
First, I love my Ripjaw DDR3-1600 CL7 @ 1.60 V and have been running them for quite some time and always HIGHLY recommend the ripjaw line.
Only a concern if CPU dies and you go to RMA it.
That said, Depending on who you talk to at Intel (RMA process).
DDR-3-1600 is considered OCed Ram for Sandy Bridge, and invalidates warrantee.
For SB: Ram Specs areDDR3-1333 and RAM Voltage is 1.425 -> 1.500.
Remember the memory controller; starting with Sandybridge is ON DIE, not on MB.
Intel's position apparently is, even if the CPU is Not OCed, running RAM above the spec (1333) is still considered Overclocking. It seems they have looked at some returned defective CPUs and come up with the problem being associated with ram run above 1333. The “overclocking” warrantee covers both CPU speed and Ram speed, if you exceed the 1.5V for Vcore – On a ONE time bases (Cost is either $20 or $25 for the i5-2500K).
Voltage is easily understood, but Ram Freq and the effects are not so apparent. My rational, as frequency increases, impedance (Z) for a reactive circuit goes down. Therefore Current inside the On-Die memory controller goes up (I= V/Z)
NOTE: Does NOT apply to Ivybridge (IV) as spec was raised to DDR3-1600 (still 1.500 ± 5%
Added:
A little more on 1333 vs 1600
Must first state that there is very little differenc in performance, in fact most would not be able to tell the difference in daily usage.
My main reason for selecting DDR3 (ripjaw DDR3-1600 CL7 @1.60 V), First bought for Overclocked i5-750 (memory controller on MB):
1) Looked like the best Ram out there.
2) Selected DDR3-1600 over DDR3-1333, Because I could run it in syncrohnous mode (vs Asynschronous Mode). That is I could set the Base FSB to 200 MHz (CPU multiplier to 16 for 3.2 GHz) and the Memory Multiplier to 2 (400 MHz - 400 x 2 x 2 = 1600) which means all pulses line-up. This is not true when when Ram multiplier is not a whole number.
I bought a i5-2500k, and since I considered the Ripjaws an excellent product also bought the same RAM for it. It was NOT until 6 -> 12 Months downstream that the issue of RAM frequency surfaced (Jan of 2012).
Will see if I can find the post.
OK found it:
QUOTE
I've just completed the first step of an RMA of my i7-2600K. It's been a long troubleshooting process, and I actually think the Asus P8P67 Pro died and took out the processor as it went.
I wanted to pass along a few things I have learned along the way, one of them very important to everyone here.
1. Intel does not ask you if you overclocked your K series processor. They DO ask if you overclocked the memory! Intel processors are designed to operate the memory at 1066MHZ or 1333MHZ ONLY. The minute you run that memory at anything higher, you void the warranty.
Since this is the official stance from Intel, it would be prudent to let people know up front when you recommend higher clocked memory what the rules are. Most or all memory will default to 1333MHZ initially for this reason.
We all know that memory speeds play a very tiny role in overall performance anyway. Those who feel compelled to complete honesty in any future RMA process would be well advised to refrain from higher memory clocks.
2. Intel wants complete troubleshooting steps. If you are sending them a CPU they expect that you have proven that the CPU is defective. In my case that meant either paying a shop or buying another CPU. I bought an i3-2120 so that I could swap it out and prove that the i7 was indeed fried.
3. Do not throw away your stock fan. They want it back, and will ask for the numbers off of it.
END QUOTE
Ref:
http://www.tomshardware.com/forum/forum2.php?config=tomshardwareus.inc&cat=31&post=333313&page=1&p=1&sondage=0&owntopic=3&trash=0&trash_post=0&print=0&numreponse=0"e_only=0&new=0&nojs=0
BOTTOM Line: gskill support, Does that mean G-Skill will cover a SB Processor if Intel denies RMA if Only reason was Ram was DDR3-1600 and CPU WAS NOT OCed. G-Skill Ram ofcoarse - LOLs