Yes, you can use both models together.
Yes, you can use both models together.
You're considering upgrading your RAM with another XPG model. Since your current rams are from XPG and match their specifications, you might face compatibility issues if you switch to a different brand or model. It's wise to verify the compatibility before purchasing. If you decide to go ahead, ensure the new RAM is officially supported by XPG for your system configuration. Otherwise, sticking with your existing rams could be safer unless you're certain about the upgrade.
RAMs are typically calibrated in a set, but they can be used with combinations of brands and speeds, which only limits performance to the slower component. Stability at XMP speed is key, so if you're having issues with XMP and need to tweak settings manually—especially voltage—switching to another 2x8 kit isn't a major catastrophe. It won’t damage your PC, but it’s best to get a kit for optimal results.
I've noticed issues when installing identical models bought at different times. TL;DR: RAM makers have problems, and using the same model number doesn’t guarantee the same kit. The main factors affecting inter-stick compatibility are PCB design and memory ICs. PCBs from similar manufacturers in the same era often match, except for companies like G.Skill and Corsair which source their boards differently. RAM suppliers outside standard OEM boards don’t always stick to one specific IC, so you might switch between Samsung C die and Hynix DJR depending on availability. That doesn’t mean they’re incompatible—some ICs can work together—but certain pairs, like the C die and DJR, definitely clash. There are around ten ICs that fit a 3200MT/s CL16 8GB DIMM, most should work at 3200, though some may not. The likelihood is roughly 70% they’ll function well with XMP enabled, 25% they might not, and 5% they won’t post or be very unstable without XMP. If you’re open to risk, getting another kit of the same specs could work, but always check the store’s return policy beforehand.
You're likely to be okay most of the time. Most RAM is just RAM. Usually the only issue is a slight slowdown. I've used four different brands or types in one PC and everything worked well for years.
Ronothan has a point. I added my own insights here. After switching to Ryzen, I purchased a 2x8 DDR4 Vengeance LPX 3600 kit and it functioned properly at first. Later, I bought the identical kit from Amazon using the same link, but it didn’t boot XMP out of the box. During overnight testing with MemTest, I encountered nine errors, which was really frustrating. It turned out to be the simplest solution—just buy a brand new 16GB kit.
It could cause an issue because adding another 2xGBK model might overload the system or create conflicts.
It's possible you won't understand until you give it a try—that's the real issue with RAM. I got two identical sets and one didn't function properly.
I don’t see an obvious reason this won’t function. The system may need time to adjust and determine the optimal speed. It should work once that happens.