To use any processing product for six years is a remarkable feat. GPUs struggle to hang on for that amount of time. You’d be reducing graphics settings heavily after the second or third year, and likely considering an upgrade around the same time. Intel’s CPUs are different – they don’t change much, and we almost always recommend skipping at least one generation between upgrades (for the gaming audience, anyway). The 7700K increased temperatures substantially and didn’t increase performance in-step, making it a pointless upgrade for any owners of the i7-6700K or i7-4690K.
We did remark in the review that owners of the 2500K and 2600K may want to consider finally moving up to Kaby Lake, but if we think about that for a second, it almost seems ridiculous: Sandy Bridge is an architecture from 2011. The i5-2500K came out in 1Q11, making it about six years old as of 2017. That is some serious staying power. Intel shows gains less than 10% generationally with almost absolute certainty. We see double-digits jumps in Blender performance and some production workloads, but that is still not an occurrence with every architecture launch. With gaming, based on the 6700K to 7700K jump, you’re lucky to get more than 1.5-3% extra performance. That’s counting frametime performance, too.
AMD’s architectural jumps should be a different story, in theory, but that’s mostly because Zen is planted 5 years after the launch of the FX-8350. AMD did have subsequent clock-rate increases and various rebadges or power efficiency improvements (FX-8370, FX 8320E), but those weren’t really that exciting for existing owners of 8000-series CPUs. In that regard, it’s the same story as Intel. AMD’s Ryzen will certainly post large gains over AMD’s last architecture given the sizeable temporal gap between launches, but we still have no idea how the next iteration will scale. It could well be just as slow as Intel’s scaling, depending on what architectural and process walls AMD may run into.
That’s not really the point of this article, though; today, we’re looking at whether it’s finally time to upgrade the i5-2500K CPU. Owners of the i5-2500K did well to buy one, it turns out, because the only major desire to upgrade would likely stem from a want of more I/O options (like M.2, NVMe, and USB3.1 Gen2 support). Hard performance is finally becoming a reason to upgrade, as we’ll show, but we’d still rank changes to HSIO as the biggest driver in upgrade demand. In the time since 2011, PCIe Gen3 has proliferated across all relevant platforms, USB3.x ports have increased to double-digits on some boards, M.2 and NVMe have entered the field of SSDs, and SATA III is on its way out as a storage interface.
This episode of Ask GN addresses reader and viewer questions relating to boost technologies for GPUs (DPM states and GPU Boost), "game mode" for monitors, and a couple questions related to CPU benchmarking. We talk loose plans for Zen tests and scalability of the 2500/2600K Sandy Bridge CPUs in the modern era. Even Nehalem got a few mentions.
Monitor "game modes" presented a topic with which we're not intimately familiar, but some research did grant us enough information to hopefully answer the question in a helpful fashion. The rest, like the boosting functionality on GPUs, is stuff that we've discussed on-and-off in review articles for several months -- it's just now laid-out in a quick Ask GN video.
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