Which type of DIMMs is suitable: single rank or 4x dual rank?
Which type of DIMMs is suitable: single rank or 4x dual rank?
Hey everyone. I'm looking to boost my PC's memory capacity (DDR4) because the forecast suggests RAM will remain relevant for years ahead, and I'm working as a video editor.
I recently noticed some DDR4 modules being sold at a tech store in my city, and I suspect their prices won't stay consistent anytime soon.
The highest they have is a 16GB 3200Mhz model with the choice between a single or dual rank stick.
Since I plan to utilize all four slots on my future motherboard (dual channel), I need guidance on which option is better.
I've heard that using two single-rank modules in the same channel performs similarly to one dual-rank module.
Additionally, it's mentioned that higher rank sticks put more strain on the CPU memory controller, potentially causing instability or slowing down the RAM clock speed—so perhaps using four dual-rank sticks would be more stable than four single-rank sticks?
So, what should I pick?
PC specifications:
i5-13400 (upgrading to i7-14700F soon)
Gigabyte RTX 3060 Ti
16GB DDR4 3200Mhz (planning to replace it with new memory for my friend)
ASUS EX-B760M-V5 D4 (wanting an upgrade soon, no specific model yet)
EVGA SuperNOVA 550 (intending to increase power to 850W or more soon)
P.S. My current motherboard only has two memory slots. I’ll be upgrading soon, so a recommendation for the next board would be greatly appreciated.
When you are unsure about the exact CPU and motherboard you will use or plan to upgrade, the challenge becomes even greater. It isn't just the memory modules themselves that determine compatibility.
Checking the memory compatibility table reveals which memory pairs have been verified to work together. This involves factors such as rank numbers and clock/latency configurations.
In many situations, higher-rank modules need to operate at a lower CL setting even if both have similar speeds like 3200. It's difficult to pinpoint exactly because it depends on the original testing conditions. Manufacturers offer memory kits with varying timings, which can make some modules appear very alike yet cost significantly more.
You must also be cautious when purchasing single memory sticks or multiple kits. Single sticks might explain lower prices, while kits are designed to work together at rated speeds. Kits undergo factory testing to ensure they function as intended. In many cases, you can obtain single sticks that work in pairs but may need to run below their rated speeds.
The limitation of your current motherboard, which only has two memory slots, is likely due to its physical size. It probably supports faster memory modules. Consider reviewing a few motherboards and their compatible memory options.
You may choose to skip a 4x DDR4-3200MHz or DDR4-3600MHz setup, since adding four RAM modules could overburden your memory controller. To achieve higher performance, you should adjust your expectations regarding the speed of the RAM kits. This guidance appears in many discussions on Tom'sHardware, especially around the www. site.
Regarding the 2x32GB DDR4 question, consider checking this link (assuming you're in the USA):
https://www.newegg.com/p/pl?N=100007611 601275376 600535716&Order=1&page=2
You might also explore this kit:
https://www.newegg.com/kingston-tec...-b...6820242806
Remember, ensure your motherboard's BIOS is up to date before upgrading RAM. I would still suggest that your current VRM might not support an i7 in that socket, even if the CPU list claims otherwise.
I want to understand if placing slower 4 ranks in the same channel could be more advantageous than having faster 2 ranks, considering rank interleaving effects. Does this approach only apply to two ranks or can it work with four? Also, do you have any solid recommendations for a motherboard?
Do you have any solid recommendations for a motherboard? You might want to begin a discussion in the motherboards section to gather ideas from the community.
I found a Dell whitepaper from years ago discussing DDR3 memory technology for their servers. They mentioned dual-rank memory as the optimal choice because it enabled rank interleaving. The document also referenced quad-rank memory, which I wasn't familiar with. Of course, they weren't overclocking and their servers operated at fixed speeds.
You can also explore Octa-Rank memory options.
Check this comparison page for insights: https://corewavelabs.com/knowledge-hub/comparisons/
Consider trying the alternative link, though keep in mind that memory costs might rise or the store could be sold out.
https://hardwaretimes.com/single-rank-vs...or-gaming/