Native vs OC ram speed
Native vs OC ram speed
You're asking a lot of questions, and let's break them down in simple terms.
First, about the Asrock Z790 Steel Legend WiFi:
It claims up to 6800+ MHz RAM, but also says 4800 MHz natively. That means you can use either speed depending on what the website says. The numbers about DPC R and channels are confusing—don’t worry, just think of them as special settings. You want two 16GB sticks, so total memory would be 32GB. The rank and channel depend on how you set it up, but usually you pick a good one for stability.
Regarding the RAM options you mentioned:
- Corsair Vengeance RGB 32GB DDR5 2 Modules 7200 (CMH32GX5M2X7200C34)
- G.Skill Trident Z5 RGB 32GB DDR5 R 2 Modules 7200 (F5-7200J3445G16GX2-TZ5R)
These are both DDR5, 32GB, 7200 MHz. They’re all good choices if you want something reliable and fast. Just make sure your motherboard supports them and you follow the right installation steps.
Now, about power:
Running RAM at 7200 MHz doesn’t necessarily mean more power use than lower speeds. In fact, modern chips are designed to handle it well. Overclocking is not needed just because the board was made before—modern boards usually run smoothly at these speeds. But if you change settings too much, it could shorten the life of your components. Stick to the recommended settings and your system should last longer.
So in short:
- You can go with either RAM option.
- Your new RAM won’t make your board use more power than normal.
- Don’t stress over overclocking unless you’re sure it’s safe for your setup.
They should function perfectly fine. The G.Skill RAM provides better performance due to reduced latency. In the second point, both options use similar power consumption; only the native variants have been verified for reliability.
It's conceivable but unlikely. Based on my observations, 7200MT/s kits were initially offered, suggesting the board likely doesn't support such high speeds. G.Skill regularly updates their QVLs and has tested the Z790 Steel Legend with their own kits, yet hasn't confirmed any ASRock board running at that rate. Validating every MSI and Gigabyte Z790 board, plus most ASUS boards, indicates it's improbable. If you aim for top performance, expect significant effort—often needing a quality memory controller and stable voltages to pass stress tests. For easier results, consider more affordable options like 6400MT/s CL32 boards. Running 7200 natively would imply JEDEC speeds with 1.1V voltage, drawing only 1-2W, though this still requires careful tuning to avoid shortening component life. Long-term it could work if done properly, but safety and reliability are key concerns.
Ranks & DPCs: A Brief Overview of DDR5 UDIMMs Configuration There are primarily two types: 1Rx8 and 2Rx8. The "R" in 1Rx8 indicates rank, meaning it contains one rank with eight memory chips per rank. 2Rx8 signifies two ranks, each holding eight chips. In real-world applications, modern DDR5 DIMMs usually follow these definitions: 1Rx8 remains a single-sided chip, while 2Rx8 always supports dual sides. Quad rank (4Rx8) exists but is mainly used in servers and rarely in consumer devices. The fixed chip count per rank determines the capacity of current DDR5 modules—higher ranks mean more storage. 32GB modules are strictly 2Rx8, comprising 16 16Gb dies, whereas 16GB units reduce to 8 dies. Most motherboards allow one or two DIMMs per channel (DPC), enabling a second chip to boost total capacity up to 128GB with today’s technology—but this often involves a performance compromise. Adding more than one DIMM in a single channel challenges the memory controller, making it harder to balance speed and storage rather than simply increasing both. Source: https://www.anandtech.com/show/17269/ddr...ers-matter
I would search for feedback about a particular RAM configuration performing at a certain frequency for that board and CPU. You might end up with a fast kit but an unstable XMP setting. If this occurs, you’d need to adjust the settings yourself. For instance, I own a 4400Mhz Cl19 kit that doesn’t function properly at those speeds in my system. Realizing that stability wasn’t guaranteed, I decided against purchasing the 7200Mhz model unless I was certain the XMP profile would work there. Otherwise, you’d be required to fine-tune manually, which isn’t suitable for beginners.