Nvidia recently released a driver update that allows RTX 5000 series GPUs to work with older Intel Core 2 processors, some more than 15 years old. This surprised many tech fans because these CPUs were previously blocked from using the latest Nvidia graphics cards.
The change happened because the driver dropped a requirement for a CPU instruction called POPCNT (Population Count), which counts the number of bits set in a number. This instruction is important for modern software but was missing in older CPUs.
Tech enthusiast Bob Pony tested the update with an Intel Core 2 Quad Q9450 and an RTX 5060 Ti. His system booted into Windows 11 successfully, proving compatibility on paper.
However, real gaming performance was disappointing. Most modern games, especially those using ray tracing like Quake II RTX, failed to launch or crashed. The problem is that many games still need the POPCNT instruction, so despite the driver update, they won’t run on these older processors.
This issue isn’t new. When Windows 11 24H2 came out, Microsoft also required POPCNT, locking out many old CPUs.
Still, there is hope for retro PC users. While ray-traced games won’t work, older or less demanding games might run fine with a new GPU paired with a Core 2 CPU. The tech community may also help by tracking which games are playable on these setups.
In short, Nvidia’s driver update opens new possibilities but comes with clear limits for gaming on older CPUs.
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