These two dual channel RAM sets match in specifications, so they should function together.
These two dual channel RAM sets match in specifications, so they should function together.
There’s no certainty without testing. I’m open to the risk, especially since DDR4 controllers on 11th gen chips usually perform well. The real factor isn’t the RAM model itself, but whether it uses compatible memory chips—information is often hard to find, particularly for budget RAM, as suppliers change based on stock and cost. You can’t be sure you’re getting the exact same chip, so I’d pick the cheaper option if it matches the required speed and timing. Still, my chances are decent.
On their website GSkill clarifies they likely mean mixing one stick from a dual kit with another not from the same kit, rather than combining two identical dual kits. If you obtain the exact same kit as in your PC but it lacks matching chips, things could change. Adding another dual kit with similar specifications should generally be acceptable. The difference between two dual kits and a quad kit with the same specs lies in the overall configuration and compatibility.
Don't mix RAM sticks from different kits. If they're from the same kit, the maker says they'll work together. Other combinations aren't guaranteed, though they might still function. The quad kit is confirmed to have compatible memory ICs and has been tested. Two kits with identical specs can work, but it's not always the case due to possible differences in their memory ICs.
So it means even with two identical dual kits, they could still fail despite higher chances of success.
Intel shows less variation across RAM batches compared to Zen. I tested four Dominator sticks for my 2700X from two different lots—two with 2x8GB and two with 4x8GB. The latter didn’t perform well at 3200MHz, so I had to lower the speeds. As @YoungBlade said, it’s really about trying it yourself.
I used the dual channel setup to meet my requirements. It's unfair to claim quad channel didn't work since I only received half of the kit. Perhaps using the other two RAM sticks from the matching factory batch could have achieved the advertised speeds. Adding more RAM makes stability more challenging. It's manageable now, but there was a time when even premium motherboards had only two slots, so people avoided four to prevent compatibility issues with high-end parts.