Yes, it is possible to use the same exact RAM purchased separately.
Yes, it is possible to use the same exact RAM purchased separately.
Let’s begin here: The idea that a computer can only perform one task at a time is a simplification. In reality, they operate step by step in cycles. Just like the CPU functions at a pace set by its clock, RAM works in its own cycle rate. Latency refers to the time it takes for RAM to respond after a request is made. For instance, a CAS 9 cycle means nine cycles occur between when the CPU requests data and when it’s returned. Clearly, the total time you wait depends on both speed and latency, since faster components shorten those cycles. It’s important to note that speed and latency aren’t inherent qualities of the RAM itself, but are influenced by the CPU’s memory controller and its configuration. The ratings on spec sheets represent the highest speeds and lowest latencies the module can handle, ensuring it will perform as advertised. Manufacturers promise functionality at these limits, though performance may vary with voltage changes. As long as your system’s BIOS specifies the slowest module, compatibility issues should be avoided, even when mixing different RAM sticks. I’m not saying it’s impossible—Linus has had issues in the past—but in my experience, I’ve never faced such problems while building PCs. Right now, I’m using two 8GB and two 4GB sticks on a fully functional desktop. CPU Z likely shows the available XMP profiles, not its actual usage. I’m not convinced a memory controller that supports varying timings exists (though I’m eager to test on a Ryzen setup).
In short, simpler timing is usually better. It’s hard to tell which numbers to use since some look straightforward like 18-19-19-39, while others seem random like 19-26-26-46. Your RAM seems to be acting up too, with two different kits showing up.
Usually it functions even without a match. Pair a Corsair 2133mhz with a G.Skill 3400mhz and it should work. Performance will be limited by the lowest frequency and timing of the weaker component. Since you have the same model, buying it at different times shouldn't cause problems.
I mentioned earlier that the content you saw represents typical profiles supported by each module, not their current performance. For this scenario, I’d apply the XMP-1600 profile and keep auto mode active. Run a brief stress test using tools like memtest or Prime95; it should perform well (as it has before). To put it in perspective, your memory modules are designed for 1600MHz (dual channel at 800MHz) and 9-9-9-24 timings at 1.5V, which are standard DDR3 specs. As you noted, Ryzen gains significantly from high-speed RAM, but the key here is the module’s rated clock speed. The basic idea is that Infinity Fabric—the network linking CCXs and modules—operates at the memory’s clock rate, so speed matters more than latency in this case. All previous advice remains applicable: you can mix memory sticks without problems, unless one exceeds its original design limits. I’ve heard some RAM types perform better with Ryzen, but I still need to explore further. P.S. Nice wallpaper, enjoyed the Borderlands series!
Very informative and well explained, even for a person like me who's have weak command in English is able to understand it clearly. Amazing, we need more people like you in the Forums or working in the Technical Support team in general lol.... Yeah some claimed that " Samsung B Die " RAM works best for RyZen like the G.Skill Flare-X or some of the Trident-Z RGB ( there are many different part numbers you have to do research and see which is it... ) and only a couple of Ripjaws V... Corsair...so far I've check are their Vengeance LPX and Dominator but rated at least 3200mhz and even up to 3600 ++ I've sold my G.Skill Trident-Z, wasn't really fan of the RGB all I be using is Red...so I just bought myself a 16GB Kit of Corsair Vengeance LED Red instead 3200mhz CL16. Sadly I'm still waiting for my 1700X return from RMA.....I be pairing with the Crosshair VI HERO board instead this time, I'm actually using the Gigabyte X370 Gaming 5 before, decided to sell it and get the CH6 instead... This point on it's getting out of topic continue to read if you're interested to hear my story. Pray that all my problems be resolve after my CPU come back from RMA, having weird issues with my 1700X....and I'm still worried about my VEGA 64 Liquid, I haven't confirm if there's any problem with the GPU.....since before I RMA my CPU...I ran into two BSOD...! A weird one too at it...it's not your typical BSOD....my PC just locks up and black screen...first time there's sound loop and I had to reset myself, second time it just auto restart itself...no BSOD screen were display but I was able to find BSOD reports using WhoCrashed. Wonder it was maybe just a bad Driver or something...or maybe it's the CPU causing it...
I purchased a 2-pack Corsair Vengenace RGB Pro 3200MHz RAM roughly a year later. I did the same again, but noticed the version changed from 4.32 to 5.22. I ignored it since no forums mentioned problems with mixing RAM in this way. After two years, I began experiencing BSODs. During testing, Memtest showed the first pack failed randomly and the second had one defective stick while the other worked fine. I reached out to Corsair, who informed me my warranty was voided and refused further assistance. My advice is to check the warranty first. Corsair’s policy states mixing kits of the exact same model aren’t supported, as it can cause stability issues, XMP/DOCP failures, or even boot failures. Their DRAM kits are only guaranteed for the packaging they come in, and any compatibility problems from mixing two kits aren’t covered.
They’re not denying your issue, but they can’t fix it due to compatibility problems. If the RAM is truly broken, they’ll likely send it back for replacement. For each unit, you should file an RMA if it’s defective, or request a separate return for each kit.