GoKawiilUnless you already have a kit of DDR5, or deep pockets for PC hardware, you’re stuck right now. Despite seeing some of the best CPUs for gaming released just in the past year, the DDR5 tax represents a major hurdle to building or upgrading your PC. Intel’s LGA 1700 CPUs hold an unintended solution, offering support for both DDR4 and DDR5. We wanted to see if this on-ramp to a next-gen platform was really as smooth as it looks at first glance.
The idea is simple. If you already have a DDR4 kit, you can upgrade to a relatively new CPU while keeping the door open for a transition to DDR5 without buying a new chip. It’s inexpensive, and a bit more of a practical solution than upgrading to DDR5 with a single DIMM and worrying about pairing it with another later.
Our testing shows how much of a performance difference there is with DDR4 in games. We’re focused on games here for a few reasons. First, in non-gaming applications, memory speed is highly dependent on the specific workload you’re running. Games, despite using different engines, are largely similar workloads that stress the hardware in similar ways. Further, those workloads are continually evolving as new games, new technologies, and new hardware targets are released.
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We kept our testing focused on Intel’s LGA 1700 CPUs because they’re the only options that give us a true apples-to-apples comparison between DDR4 and DDR5. We don’t have any AMD CPUs in our test pool because there aren’t any chips that support both DDR4 and DDR5. This isn’t intended to be a competitive analysis between AMD and Intel. That conversation opens up a much broader conversation about total platform cost.
Testing DDR4 vs. DDR5 on Intel’s LGA 1700 CPUs
To test DDR4 and DDR5’s gaming performance, we ran Intel’s main LGA 1700 stack through a 15-game gauntlet of benchmarks. Notably, we don’t have results for the Core i9-12900K, as our sample has a janky memory controller that won’t boot on DDR5 systems. You can read a full breakdown of how (and why) we tested in the way we did in the section below.
We ran all of the games through our 16-game benchmark suite, though we cut Doom: The Dark Ages from the results here. An update for the game rolled out mid-way through testing and skewed our results, so we’re omitting it. The 15 remaining games still paint a clear picture of the performance difference between DDR4 and DDR5.
As usual, we tested with the RTX 5090 Founder’s Edition at 1080p with a mixture of High and Ultra settings. We test at 1080p to maximize the differences between CPUs, and it remains the most widely-used resolution for gaming. Deltas between CPUs will decrease as the resolution climbs and the GPU becomes a larger influence in performance.
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