Originally Posted by Baasha
Time to replace my aging 3970X in my 2nd rig and wanted to build a Z390 system with a 9900K or 9900KF CPU.
The thing is, the "KF" is the one without the i-GPU so does that mean it can OC better? Or is there no real difference between the two? The "KF" is slightly more expensive but that's not an issue if it is a better CPU overall.
Also, what is the BEST motherboard for the Z390 platform? I don't care about price - I want highest OC with the fastest RAM (32GB) and will be using 2x 2080 Ti in SLI/NVLink.
So far nobody has found an actual advantage to the KF parts for the buyer unless they are offered for less money. They appear to be just K parts that had a defective iGPU so it's been deactivated.
We will need to see some overclocking comparisons to really know for sure, but due to the variations in the overclocking capabilities from one part to the next, it will probably take some sort of statistics gathering over many parts before we can see a trend (PassMark or Silicon Lottery perhaps).
Personally, I'd think the place they would fit best would be in a pre-made system (like say a Dell) that comes with a graphics card. Then, presumably, Intel would offer Dell some sort of discount for the F or KF parts vs. the K parts. If selling at the same price as the K, I don't know why anyone would buy the F or KF parts.
If the KF was actually a new chip layout with the iGPU physically removed and the CPU cores spaced out more and thus offered better cooling, then Intel might actually have a better part for overclockers who use an external GPU, but so far I haven't seen any sign that this is that.
(-1 AVX offset) on ASRock Z390 Taichi
with Noctua NH-D15 air cooler
CPU offset voltage of -25mv, runs VRVout 1.240-1.313V on full AVX load, 1.225-1.275V on non-AVX load
2x8GB [email protected] at 1.45V
, G.Skill F4-3733C17Q-32GTZKK (XMP rated [email protected]
EVGA GTX 1060 6GB OC with Corsair RMx 750W power supply
Samsung 970 EVO 500GB NVMe boot SSD and four other drives all in a Fractal Design R6 Case