CORSAIR DDR4 RAM Vengeance LPX 64GB User Guide
- June 14, 2024
- Corsair
Table of Contents
CORSAIR DDR4 RAM Vengeance LPX 64GB
Product Information
Specifications:
- DDR4 RAM
- Capable of hitting faster speeds
- Capable of hitting higher densities
- Improved error correction built into the baseline specification
- Consumes less power for equivalent or better performance than DDR3
Product Usage Instructions
- DDR4 vs DDR3
- DDR4 has replaced DDR3 for several reasons:
- DDR4 can achieve faster speeds.
- DDR4 can achieve higher densities.
- DDR4 has improved error correction.
- DDR4 consumes less power for equivalent or better performance.
- DDR4 Speed and Performance
- While DDR4 may have slightly looser latencies compared to DDR3, it compensates by reaching higher clock speeds.
- It is important to note that achieving high clock speeds with DDR3 can be expensive and require careful binning of memory chips, whereas DDR4 starts at a speed of 2666MHz.
- Backwards Compatibility
- DDR4 is not backward compatible with DDR3. The key notches on the DIMM are placed differently to prevent mixing them up. Haswell-E and X99 platforms are compatible only with DDR4.
- XMP Profiles
- DDR4 supports XMP 2.0, while DDR3 uses XMP 1.3. Corsair DDR4 memory comes with two XMP profiles:
- Profile 1: Runs at the DDR4 specification of 1.2V.
- Profile 2: Offers a higher speed but requires a voltage bump to 1.35V. This profile is not officially supported but represents the potential achievable performance.
- Stability Issues with XMP
- If you encounter stability issues with XMP profiles, follow these steps:
- Manually enter the speed and timings the DDR4 is rated for.
- Run the memory at its default speeds until a BIOS update from your motherboard vendor improves stability.
- Memory Slots and Stability
- Ensure that you have installed your DDR4 DIMMs in the primary set of memory channels, following your motherboard’s instruction manual. This order is crucial for stability. If issues persist, contact tech support.
- Dominator Platinum DDR4 vs Vengeance LPX DDR4
- The main difference between Dominator Platinum DDR4 and Vengeance LPX DDR4 is the heat spreader.
- Dominator Platinum DDR4 features a larger and more robust heat spreader, while Vengeance LPX DDR4 utilizes a standard-height PCB and heat spreader.
- Combining Multiple Kits
- We strongly advise against combining multiple kits of CORSAIR DDR4 memory.
- Each kit is validated for its rated performance using only the modules provided within that specific kit.
- Combining kits, even if they have the same speed rating, may result in memory modules not reaching their rated performance specification.
- Additional Resources
- To learn more about DDR4, refer to our whitepaper that provides a detailed examination of this new memory technology. You can find it here.
Why do we need DDR4?
There are four major reasons why DDR4 has replaced DDR3: it’s capable of hitting faster speeds, it’s capable of hitting higher densities, it has improved error correction built into the baseline specification, and it consumes less power for equivalent or better performance than DDR3. In short, DDR3 reached its limits and DDR4 has been able to push beyond that threshold.
Is DDR4 slower than DDR3?
Because DDR4 uses looser latencies than DDR3 does, it can be slightly slower than DDR3 at the same clock speeds. What makes DDR4 important is that it can easily make up for that deficit by hitting higher clock speeds than DDR3 can. Getting DDR3 to run at 2666MHz or higher requires very careful binning of memory chips and can be very expensive, while 2666MHz is the lowest speed of our DDR4.
Is DDR4 backwards compatible with DDR3?
No. DDR4 and DDR3 have key notches in different places on the DIMM to prevent them from being mixed up, and Haswell-E and X99 are DDR4 only.
Does DDR4 have XMP?
Yes! DDR4 employs a new specification, XMP 2.0, while DDR3 remains on XMP 1.3.
How does XMP work on DDR4?
Very similarly to DDR3, but with some caveats. For starters, Haswell-E tops out at a 2666MHz memory strap, which is very low for what DDR4 can do. Since XMP specifies speeds in excess of 2666MHz, your motherboard BIOS has to compensate somehow. Typically, when XMP tells the motherboard to use a higher memory speed than 2666MHz, the motherboard BIOS will bump the BClk strap from 100MHz to 125MHz. That’s normal, but that change will also increase the clock speed of the CPU itself; a well-designed BIOS will compensate and bring the CPU clock speed in line.
Why are there two XMP profiles on my Corsair DDR4?
We include a pair of XMP profiles instead of just one for users who want to control how much power is consumed by the memory. The first XMP profile runs the DDR4 at its specification of 1.2V, while the second offers a higher speed at the cost of bumping the voltage to 1.35V. The first profile, then, is officially supported, while the second is not and instead offers a baseline of what the memory should be able to achieve.
Why am I encountering stability issues with XMP?
If you have trouble with stability using either XMP profile, we recommend either manually entering the speed and timings the DDR4 is rated for or running your memory at its default speeds until your motherboard vendor provides a BIOS update to improve stability.
I'm running at the default 2133MHz speed, but my system still isn't stable.
Double-check to see which memory slots your DDR4 is installed in against your motherboard’s instruction manual. We’ve found that you have to install your DIMMs in the primary set of memory channels first, in order, to ensure stability. If this checks out, please contact our tech support.
What's the difference between Dominator Platinum DDR4 and Vengeance LPX DDR4?
Vengeance LPX is our mainstream DDR4, utilizing a standard-height PCB and heat spreader. Dominator Platinum DDR4 adds a larger, more robust heat spreader.
Can I combine multiple kits of CORSAIR DDR4 memory?
We strongly recommend you do NOT combine multiple kits of CORSAIR DDR4 memory. Our memory kits are only validated for their rated performance when using only the modules provided within that specific kit (box). Combining multiple kits, even if they are rated for the same speed, may result in your memory modules not being able to reach their rated performance specification.
Where can I learn more about DDR4?
We’ve authored a whitepaper that provides a much more detailed examination of this new memory technology. You can find it here.
Read User Manual Online (PDF format)
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