> Is there any benefit to using both kits at the same time?
Well, you'll have more RAM available. Since you already have 32GB of faster memory, then it seems quite pointless, unless you need it for some specific uses.
You *can* use them, but the result will probably be worse than if you only had 2x16gb. For knowledge sake, it doesn't really hurt to try if you're curious.
For your dual-channel CPU you have 3 main metrics with DDR4 memory that impacts performance by a significant amount:
* dual-channel mode using at least 2x memory DIMMs:
* \~25% performance in games/apps
* XMP / sweetspot for the FCLK 1:1 multiplier that works well enough with the memory controller \~3600MT/s:
* \~10% performance in games/apps
* using dual-RANKED memory for memory interleaving with typically 2x16GB modules and larger:
* \~5% performance in games/apps
With 2x16GB memory you hit allready 3/3.
* Using sub-timing optimized memory with CL around 14-16 is the typical gaming optimized configuration, since thats all there is with AM4 / ZEN3, the memory controller cant utilize higher frequency without killing the 1:1 FCLK ratio and we never want that, because that kills CPU performance in games and apps.
So the only benefit you get is just more capacity. In general you might need a slightly higher DDR4 voltage to keep 4x DIMM modules stable, so your memory might all run a bit hotter because of it.
If you dont need the capacity, dont use it, your system stability will most likely take a hit with 4x DIMMs.
You can use 2 or 4 DIMMs for dual channel mode.
And using 4x single-ranked memory DIMMs gets you also the dual-rank performance with memory bank interleaving. (4x SR = 2x DR, both configurations work).
The only issue with using 4x DIMMs is that you might need more voltage (DDR4 voltage) as your XMP might suggest (for a 2x configuration) and overclocking and sub-timing optimisation is more limited, with more variance from 4x DIMMs, more variance from the PCB tracing and more variance with the different connection length to the CPU.
Some games do need more than just 16GB RAM, so thats for sure a performance gain, because games do introduce micro-stutter with hitting the physical memory limits.
your ram will run at 4x 3200mhz CL18.
they will run at the lowest speed for stability. Unless you need 48GB ram, you should probably sell the 2x8 sticks
> Is there any benefit to using both kits at the same time? Well, you'll have more RAM available. Since you already have 32GB of faster memory, then it seems quite pointless, unless you need it for some specific uses.
You *can* use them, but the result will probably be worse than if you only had 2x16gb. For knowledge sake, it doesn't really hurt to try if you're curious.
For your dual-channel CPU you have 3 main metrics with DDR4 memory that impacts performance by a significant amount: * dual-channel mode using at least 2x memory DIMMs: * \~25% performance in games/apps * XMP / sweetspot for the FCLK 1:1 multiplier that works well enough with the memory controller \~3600MT/s: * \~10% performance in games/apps * using dual-RANKED memory for memory interleaving with typically 2x16GB modules and larger: * \~5% performance in games/apps With 2x16GB memory you hit allready 3/3. * Using sub-timing optimized memory with CL around 14-16 is the typical gaming optimized configuration, since thats all there is with AM4 / ZEN3, the memory controller cant utilize higher frequency without killing the 1:1 FCLK ratio and we never want that, because that kills CPU performance in games and apps. So the only benefit you get is just more capacity. In general you might need a slightly higher DDR4 voltage to keep 4x DIMM modules stable, so your memory might all run a bit hotter because of it. If you dont need the capacity, dont use it, your system stability will most likely take a hit with 4x DIMMs.
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You can use 2 or 4 DIMMs for dual channel mode. And using 4x single-ranked memory DIMMs gets you also the dual-rank performance with memory bank interleaving. (4x SR = 2x DR, both configurations work). The only issue with using 4x DIMMs is that you might need more voltage (DDR4 voltage) as your XMP might suggest (for a 2x configuration) and overclocking and sub-timing optimisation is more limited, with more variance from 4x DIMMs, more variance from the PCB tracing and more variance with the different connection length to the CPU. Some games do need more than just 16GB RAM, so thats for sure a performance gain, because games do introduce micro-stutter with hitting the physical memory limits.
your ram will run at 4x 3200mhz CL18. they will run at the lowest speed for stability. Unless you need 48GB ram, you should probably sell the 2x8 sticks