Upgrading to a newer processor model
Upgrading to a newer processor model
Thanks for the positive comments. I believe you understand how far I can go and plan to upgrade the CPU later when I’m ready, without needing to modify the motherboard.
early 14nm specs are still in question, but it’s still around 14nm. The 1.35v value acts more as an efficiency peak, not a design change. This suggests it’s better to stick with this voltage for optimal performance and power use. Older chips often perform best at this setting, as seen with my E8400 running at 4.3g and needing a higher voltage for better efficiency. Higher voltages usually require more power handling, so a slight increase might be necessary. Newer chips tend to cap around 1.2-1.25v before efficiency drops sharply. At 45nm, 1.5-1.6v works well, and some people still use 1.6v for higher frequencies without major issues. On the X58 Westmere, I haven’t noticed any problems even at 1.5v VTT for long periods. For 45nm and 32nm, I lean toward 1.45v as a safe choice, keeping in mind that 22nm is less tested and might have reliability concerns. If you’re unsure, go with 1.45v for pre-14nm setups, but be cautious with Ryzen models which can be more sensitive to voltage changes.
Broadwell ran at 14nm and struggled with clock speeds, especially under voltage constraints typical in HEDT environments. Skylake and later models generally followed the standard 1.4v–1.42v safe limits. Westmere differs from Haswell. Previous generations often handled higher voltages than current ones. Most modern chips now stick to the 1.4–1.42v safe range, except Haswell-E and Broadwell-E where lower voltages are advised to manage heat. I’ve worked with older, reliable chips that are widely available, but applying that knowledge to newer designs is risky.
It looks like VCCSA or IMC voltage is basically the same as the safe core voltage, which explains why even a modest 1.55V didn’t affect my X5660 after long runs. These should be as reliable as 45nm or close, according to Buildzoid—1.45V is the recommended upper limit for extended use on newer Intel chips, including the 12th generation. It seems you’ve likely reached the safe operating voltage for the current design. For older 32nm processors, around 1.55–1.6V should work with proper cooling, though I haven’t tried higher voltages yet. The heat dissipation is a big concern; even with decent cooling, IBSH and the IHS are getting very hot. My H212 is still functional at 1.6V+, but the X5660 needs careful management. The X58 is down because I used a faulty X5660, and the cooling isn’t sufficient even at higher voltages. It might be worth exploring direct die mounting solutions for better thermal control, especially if I need to push performance further.
The practical choice. Broadwell doesn't offer good CPU performance unless you can secure a compatible chip and a Z97 board. If you're using Z87, the best pick is a 4790K which provides only extra hyperthreading and minor clock improvements over the 4690K. Honestly, those additional threads might help in today's games, but it's not a solid reason to upgrade now—consider moving to AM5 or Raptor Lake in the near future.