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This is not terrible. Usually it's like around 0,2V drop. Like you set 1.7 and get 1.5V under load.

They have a terrible vDroop. You need a standard vDroop mod for them to even start overclocking. If you want to overclock C0 CPUs, I'd suggest to make it variable (I think stock is around 50KOhm) and switchable. Otherwise with tight vDroop a hungry C0 might trigger OCP.

Do you have a photo?

Interesting sticks! The "ears" (half circles) suggest it's Micron manufacturing, the noname marking suggests it's probably Spectek (Micron subdivision for OEM and low-level chips). The 128X8 marking suggests it's 128M chip x8 bit wide. But I'd love to see SPD or module organization from AIDA in...

AOpen 975X is Socket M. Socket P is a different socket used by newer Meroms (Santa Rosa) and Penryn CPUs (dual and quad core). There was a big variety of different s478/479 sockets incompatible with one another.

I've taken a different approach and played with AsRock 775i65G as a cheap AGP benching board. What's interesting, AsRock unlike Asus P4P800/P4C800 has all the features disabled. But now we know what they are. The board didn't want to allow to set RAM dividers manually. Also, it had PAT disabled...

Yes, this applies to all 848/865/875 variants. The 845 not quite - it's a previous generation. It does have fast CS, CPC and tRD though. But not quite PAT. And some limited subtimings. I didn't try for high FSB. Previous tests were with just below 300 which is more than enough for 95% of CPUs.

You can see some of my tests at 290MHz FSB with PAT enabled. https://www.hardwareluxx.de/community/threads/netburst-evolution-pentium-iv-m-478-479-xeon-603-604-stammtisch.1281326/post-30209129 But yes, a more detailed analysis would be nice - how far does each chipset setting allow you to...

@Masterchief79 I can give you some chipset tweaks if you want and if you show a WPCREDIT screenshot. @digitalbath so I wanted to study PAT a bit more. I'm still working on it but I've finally compared 865 and 875. Setup: P4P800 rev. 1.02, P4C800-E rev. 2.00, both running my benchBIOS 1.2...

@Tzk please, correct the marking for Hynix ETR-E3C. For x16 chips it should be H5DU5162ETR-E3C. Thank you in advance.

I think it is because Trp was moved to 60h and Trp and Trcd became 2-byte, not 1-byte like before (KT266-333). I've had this issue with KM400 and KM400A - wrong Trp and Tras was shown. Also I always recommend tweaking 6A=FF, gives a slight boost. But I think you should compare registers and SIPs...

Another thing to check is that you are using the same version of Everest. Some versions give weird numbers and cannot be compared to others. I see nothing obvious in the registers. @MadYoshi you have checked you board with 1CPU and 1 memory stick, am I right? And nothing changed?

This is standard for most VIA chipsets: 50, 51 = FF Memory timings (64-67 but only those that are really populated by RAM modules) = 12 6A=FF This should already fix 95% of performance problems. With bad RAM these settings might not work, it's the perfect case to reach.

Thank you. Yes, the CAB1E/CAB2E are an interesting case for overclocking. But since AMD decided to make then seem as normal Venice CPUs, it's almost impossible to detect them by software. I think we can identify them by K8 manufacturing ID (CPU-Z txt report shows this value) but I didn't have...

@Tzk , I remember you tried different memory chips on NF2. Could you remind, how did they behave? Anything worth interest besides Winbond?