DDR3 memory operates at 1.5V, so running 1.5V on Haswell-E shouldn’t be a big deal, but we all know that lower voltages are better. The memory controller in Haswell-E is the same one used on Xeon processors, so it can technically support both DDR3 and DDR4 memory. This is useful information for the community and we pretty sure that we weren’t the only ones that were curious how much power you could throw at the memory kit before the memory controller on the processor would being to get angry. So, it sounds like Intel suggests a memory kit that uses 1.35V or less and that 1.5V is the absolute max for Intel XMP 2.0 certifications. Technically, no “safe” (guaranteed) OC over-voltage but 1.35v or lower is best.” – Intel However, good DDR4 memory will run at 1.35v up to 3200. “1.5v is the absolute max we allow for XMP certifications. Legit Reviews contacted Intel about the safe voltage range on DDR4 memory and we received this response. We also had one Intel X99 motherboard and Intel Core i7-5960X processor die an untimely death, so we were really curious if the higher than standard voltages played a roll in that situation. In recent weeks we have received kits that are running Intel XMP 2.0 memory profiles at 1.35V and 1.50V, which are both above the the ‘standard’ according to the JEDEC board. JEDEC committee members told us that voltage reduction is an important prerequisite for limiting power consumption and heat generation due to the increase in bandwidth. One of the key features of DDR4 memory is that the supply voltage has been reduced to just 1.2 Volts, providing a 20% improvement over DDR3 kits that run at 1.5V. No submissions about memes, jokes, meta, or hypothetical / dream builds.DDR4 memory is very new and we haven’t been told by anyone what the safe range is for DDR4 memory, which is a bit strange if you think about it.No submission titles that are all-caps, clickbait, PSAs, or pro-tips.No submissions about retailer or customer service experiences.No submissions about sales, deals or unauthorized giveaways.No submissions about hardware news, rumors, or reviews.Please keep in mind that we are here to help you build a computer, not to build it for you. Submit Build Help/Ready post Submit Troubleshooting post Submit other post New Here? BuildAPC Beginner's Guide Live Chat on Discord Daily Simple Questions threads
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