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DDR3-1866 Memory is supported on 4-th generation Intel CPUs and motherboards. According to Legion Hardware
The bandwidth performance of the Core i7 3770K processor seems optimal with DDR3-1866 memory as this allows it to achieve a read bandwidth of a little over 20GB/s. The DDR3-1600 memory on the other hand just fell short of 19GB/s.
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By now, most readers have noticed that the performance of DDR3-1600 reference memory doesn't change. That's because it's always at DDR3-1600 CAS 9, regardless of the data rate its on-paper competition is running. In this case, everything but the reference memory is operating at DDR3-2133, which should kick performance up a couple notches.
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G.Skill appears at the top of our DDR3-1866 application chart, but only because identically-performing products are arranged in alphabetical order. In reality the top three contenders yield the same average performance between the two tests, and have yet to prove noticeably advantageous against the reference DDR3-1600 CAS 9.
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Legion HardwarePatriot Viper 3 DDR3-1866 & Viper 3 Intel Extreme Masters DDR3-2133
Posted on: 08/29/2012 04:04 AM
The bandwidth performance of the Core i7 3770K processor seems optimal with DDR3-1866 memory as this allows it to achieve a read bandwidth of a little over 20GB/s. The DDR3-1600 memory on the other hand just fell short of 19GB/s.
The low latency Crucial Ballistix Elite memory performed well, beating the Patriot Viper 3 thanks to its superior timings. That said the margin between these two DDR-1866 memory kits was very minimal. The Viper 3 Intel Extreme Masters DDR3-2133 memory was the fastest tested, pushing the read bandwidth out to 21.2GB/s.
The latency performance shows the same performance trends as the bandwidth testing above. The Patriot Viper 3 Intel Extreme Masters DDR3-2133 memory was the fastest tested, taking just 36.8ns compared to the 38.1ns it took the Viper 3 DDR3-1866 memory.
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Sandra Memory Bandwidth almost perfectly reflects the speed each module set achieved, but slight variability in this particular benchmark did mix the results of some close contenders.
Most people won't push their memory to the highest possible speed but will instead use the above information as a guideline for limits. At any given speed, tight timings offer improved performance. We tested each 6 GB triple-channel kit at the three most common "performance" speeds.
Best Timings at 1.66 V
DDR3-1866 DDR3-1600 DDR3-1333 Kingston DDR3-2000 KHX16000D3ULT1K3/6GX 7-8-7-18 6-7-6-15 5-6-5-14 Crucial Ballistix 1600 BL3KIT25664BN1608 8-8-7-14 8-7-6-12 6-6-5-11 Mushkin Enhanced 1600 Model 998679 8-9-8-20 7-7-7-15 6-6-5-13 Wintec AMPX 1600 3AHX1600C8WS6GTK 9-8-7-14 8-7-6-13 6-6-5-11 Corsair Dominator 1866 TR3X6G1866C9DF 9-9-7-14 8-8-6-12 6-6-5-11 Patriot Viper 1600 PVT36G1600LLK 9-8-7-18 8-7-6-14 6-6-5-11 G.Skill DDR3-1600 F3-12800CL8T-6GBHK 9-8-8-13 8-7-7-12 6-6-6-11 OCZ Intel Extreme 1600 OCZ3X1600LV6GK 9-8-8-14 8-8-7-14 6-6-5-10 A-data Vitesta 1600 AD31600E002GMU3K 9-9-9-16 8-7-7-13 6-6-6-12 Geil Value DDR3-1600 GV36GB1600C8TC 9-9-9-18 8-7-6-14 6-6-5-12 Aeneon Xtune 1600 AXH860UD20-16H-K-6G Failed 9-8-6-15 7-7-6-12 Super Talent 1333 WA133UX6G8 Failed 8-8-8-14 7-7-7-11
Kingston and Crucial continue their dominance at our highest test speed, while Mushkin edges into second place at DDR3-1600. Aeneon stays near the bottom when it comes to timings, barely beating Super Talent's DDR3-1333.
