Sunday, December 2nd 2018
Intel Readies "KF" Variants of Key 9th Gen Core Desktop SKUs
Intel is readying a curious-looking "KF" brand extension for key SKUs of its 9th generation Core "Coffee Lake Refresh" family. These SKUs include the Core i9-9900KF, the Core i7-9700KF, Core i5-9600KF, and the Core i3-9350KF. The source revealing slides from a GIGABYTE internal presentation mentioning these doesn't explain what "KF" means, but we've heard rumors on what "KF" could mean. The "K" in KF denotes that the processor features an unlocked base-clock multiplier. No points for guessing that one. The "F," however, could indicate a disabled or physically absent iGPU.
This won't be the first time that Intel has launched variants of its mainstream desktop premium SKUs with disabled iGPUs. Intel's reasons for doing so with "Coffee Lake Refresh" could be many, including harvesting dies with defective iGPU components. Physically absent iGPUs could only make sense from the perspective of increasing yields per wafer, as the dies could be around 15% smaller for the 8-core silicon, and 25% smaller for the 6-core silicon. It doesn't make sense from a purely TDP-optimization perspective, because Intel processors are capable of power-gating (and not just clock-gating) user-disabled iGPUs.
This won't be the first time that Intel has launched variants of its mainstream desktop premium SKUs with disabled iGPUs. Intel's reasons for doing so with "Coffee Lake Refresh" could be many, including harvesting dies with defective iGPU components. Physically absent iGPUs could only make sense from the perspective of increasing yields per wafer, as the dies could be around 15% smaller for the 8-core silicon, and 25% smaller for the 6-core silicon. It doesn't make sense from a purely TDP-optimization perspective, because Intel processors are capable of power-gating (and not just clock-gating) user-disabled iGPUs.