I have the same exact kit, and here's what I've found:
If you're trying to keep at stock voltage, 1.65v, or under, here are the timings/speeds I've found to work best:
- 2400 10-11-11-30 (I've gotten 2400 9-12-11-32 to work fine, but many have not)
- 2200 9-11-10-28
- 2133 9-10-10-27
- 1866 8-9-8-26 (or 7-8-7-24 may be possible for you, may not)
- 1600 6-7-7-22 (or 6-7-6-21 if it will POST for you)
- 1333 6-6-6-18
If you don't mind increasing the volts to 1.7v, then you should easily hit:
- 2400 10-11-10-30
- 2200 9-10-10-28
- 2133 8-10-9-26 (maybe 2133 8-9-9-24)
- 1866 7-7-7-22 (maybe 6-7-7-24)
- 1600 6-6-7-20 (or 6-6-6-18 may be possible)
- 1333 6-6-6-12 (can't get anything under CAS6)
These are all timings that have PASSED IBT/OCC/LinX/MemTest/etc and were stable for the entirety of their use. Keep in mind that you WILL have to play around in the sub-timings a bit to get the really tight timings, but these sticks have SO MUCH POTENTIAL that it is absolutely worthwhile to learn it!
Also, the above are not even the best-overclocking sticks I've seen, as a friend has a pair that we recently found will hit >2666 with very low air ambient temps... He is running: 3770K @ 4.6Ghz, Asus Maximus 5 Extreme, G.Skill RipjawsZ 2133cl9 16GB kit...and...
Warning: Parts List! (Click to show)
2x EVGA GTX670FTW 2GB (with EVGA 670FTW Backplate and PK-1 used to replace stock TIM) + GTX460 216core for PhysX, Sound Blaster X-Fi Titanium HD PCIe x1 Sound Card, Thermalright Silver Arrow SB-E Extreme with 1x SilverStone (has different sets of fans for different purposes; San-Ace 120x38/25, Delta 120x38/25, TR-151/143/141, Scythe GT AP-30's, etc), SeaSonic Platinum 1000W 80+Platinum Modular PSU, Kingston HyperX KHX-FAN-B RAM Cooler with the 2 fans replaced with 2x 80x25mm Delta 0.61A/12V 54CFM Fans (only when going for crazy speeds; normally just uses a G.Skill RAM Cooler), 2x WD VR 500GB's RAID0, Corsair Force GS 256GB SSD, WD Black 2TB, Lamptron FC-5v2 Fan Controller, 4-in-3 HDD Cage with 120mm Fan, and all stored in a Cooler Master HAF-X that has been altered quite a bit. The case itself has the lower HDD holders have all been removed (just the parts that hold the rails/VGA cooler remain, and then the ODD bays hold the HDD's) to allow the front 200mm fan to work unimpeded, the rear fan grill has been cut out and replaced with a wire grill, and the top/front fan grills/mesh-stuff have all been replaced with Modder's Mesh HexxMesh for better airflow. As for fans, it's currently running a mix of BitFenix and NZXT 200/230 fans (each fan moves ~110-140cfm), a San-Ace 120x38 2200-3800rpm fan in interior (up to 144cfm) as well as an 80x38mm Vantec Tornado, and as of two days ago a Silverstone 140x38mm Rear Fan (he ordered 5, some for his TR SA; prior to that it was a Bgears Blaster 140mm). The fan in the 4-in-3 HDD Cage was swapped to a Scythe Slipstream 1900rpm 110cfm fan.
He came over to my place the other day to run some benchmarks, and we decided to see how well "sub-zero air cooling" works with his incredibly-well-cooled air-cooled rig. Thanks to one of my 9ft DVI-D Dual-Link cables, house wired for CAT6E, and 9ft USB/power extensions, we were able to stay inside while the rig was out in the cold.
First, I must say that WOW, with the Silverstone 140x38mm fans on the TR SA cranked, and with the ambient temperature at 13-17*F, he was able to get 5.0Ghz stable "on air" on an IVB chip with plenty of thermal headroom! This is also with ALL Case Fans running full-out, which if I did my math correctly, is equivalent to exchanging the entire case's air 4.5x per second!!! (It's also loud!)
Anyway, the RAM Cooler was helped by the side fan blowing freezing cold air right to it and across the MB (VRM's never broke 70deg... Fahrenheit!), and the fans were run at ~70% speed to prevent starving the Power Regs on the board of air.
With 1.7125v going to the Ripjaws-Z 2133cl9, we were able to get ALL FOUR sticks SP32m/P95-1hr stable at DDR3-2715 11-12-11-32 2T! The DIMMs stayed under 75*F, but it was obvious that they were heating up significantly and that this kind of speed was likely unrealistic without either: A) freezing-cold air, or B) very-high-end Water Cooling, per-DIMM (likely with a Chiller). We did have to back down the CPU to 4.5Ghz or the RAM wouldn't run over 2520, and it's possible that the memory kit could have hit 2800 with the CPU at 4.2Ghz or below, but we didn't have time.
Not only did we go for a max speed with good timings, we also went to see how tight the timings would get under such crazy temps. We tried at 2133, 2400, and at 1600. Here is what we got, at a -8.45C, so I wouldn't expect to repeat the results unless you are in similar conditions, but it does nevertheless show what these kits are capable of right out of the box, no binning/picking the best sticks out of two-dozen kits/etc...DDR3-2400 9-10-10-30 (1.6875v)
DDR3-2133 7-9-8-24 (1.675v)
DDR3-1600 6-6-6-10 (1.675v)
Unfortunately, this is the same friend who broke a DIMM when removing the heatspreaders, so he is waiting on a new kit to arrive. The existing kit, despite being down to 12 working gigabytes, will be used for dual channel or possibly triple-channel (he has an i7-980 and Rampage III Extreme) if he gets better-overclocking memory, but as the cost for anything decent goes up seemingly exponentially after this particular kit (always exceptions, so not an absolute) he will likely be keeping these for a while. He removed the heatspreaders because
Warning: H2O Stuff (Click to show)
he has some Alphacool and XSPC "Universal RAM Blocks" for use in the H2O system he is setting up, and although it's his first go-around with water he is going all-out with 2x UT60 420 rads and 2x Koolance 30fpi 360 rads, dual MCP35X2's (4 pumps!), 2 400mL cylinder reservoirs, 12x Bgears Blasters and 12x Koolance 120x38mm 4000rpm Fans for Push/Pull on rads (he likes my fans), Aquaero Aquacomputer XT (full complement of temp, flow, and all other sensors) and the Aquaero Water Block, Apogee HD CPU Block, EK Copper Maximus V Extreme Full-Cover Block Set, Alphacool 4-DIMM RAM Block Set, 2x HeatKiller "Hole Edition" 680 Blocks (ordered the backplates but he said he isn't sure if he'll use them or the EVGA ones), around 60 different Bitspower Rotary Adapter/Extension/Coupler/etc Fittings (half white, half red) with 8x 6-packs of Monsoon 1/2x3/4 Compression Fittings (half matte-black, half white), some of the PrimoFlex Advanced 1/2x3/4 tubing, Mayhems dyes (like 8 different types of reds and white), and a whole bunch more. Of course, I get to "help" set it up (meaning I get to do most of the work
The wicked air setup is simply being transferred to his wife's 2700K (@ 4.8Ghz using its current Tt Frio OCK "Extreme" with 2x San-Ace 120x38 3800rpm fans but hits 70C too regularly; TR SA SB-E EX keeps her chip below 57C) + Maximus IV Extreme-Z + 2x GTX560Ti448's in SLI with a 9800GTX+ for PhysX + 8GB Mushkin Ridgeback 2200 @ 9-10-9-28 (or 2x2GB of G.Skill that will run DDR3-2400 9-10-9-28 1T @ 1.675v) setup.
These are some MONSTER STICKS!!!