Intel has teased Lakefield because its Architecture Working day back in 2018, where by it showed off the SoC for the 1st time. Lakefield is a exceptional solution for Intel, supplied that it pairs four “little” cores primarily based on the Tremont (Atom) microarchitecture with a single “big” core primarily based on Sunny Cove (the exact same CPU core made use of in Ice Lake).
Intel will launch Lakefield in two SKUs: Core i5-L16G7 and the Core i3-L13G4. The i5 CPU will run at a foundation clock of 1.4GHz and a turbo of 3GHz, although this applies only to the single Sunny Cove CPU — multi-core turbo is minimal to 1.8GHz. The i5 has 64 EUs (the exact same width as Ice Lake), but a substantially reduced GPU frequency of just 500MHz the Core i3 has 48 EUs but the exact same 500MHz GPU frequency. Huge and slow, fairly than tiny and speedy, is plainly the electricity-saving purchase of the working day.
TDP on these chips is 7W, with assistance for LPDDR4-4267, which will continue to keep the reduced-clocked Ice Lake GPU fed. Mobile Ice Lake only runs up to LPDDR4-3733, building this a more 1.14x improve.
Both equally the single Sunny Cove and the quad-core Tremont have entry to a 4MB last-stage cache, although Intel has not confirmed if that’s L2 or L3. Lakefield takes advantage of Foveros, Intel’s 3D interconnect technological know-how, to tie the overall core collectively and link the diverse CPU cores. According to Intel, workload shifting is taken care of by the OS but guided by data from the underlying hardware. Actual aspects on how this hand-off takes place or when the OS appreciates to spin up the Sunny Cove core compared to the Tremont cores are even now not known. We do know that Lakefield is expected to rely mostly on its Tremont cores the Sunny Cove CPU core is there for UI latency and consumer interactions.
AVX-512 does not look to be supported in Sunny Cove, which may possibly be a great thing in the context of trying to continue to keep to a 7W electricity consumption window. AI workloads are presumably run on both the CPU or GPU, but there’s no specialized co-processor to deal with them.
It is not crystal clear nonetheless what we must anticipate from Lakefield or how very well it will distinguish alone from current small-electricity Intel solutions. The corporation has struggled to differentiate on electricity consumption in advance of Core M did not make a extremely crystal clear identity for alone in advance of currently being mostly subsumed back into Intel’s current solution lineup.
Lakefield takes advantage of anything more akin to Nvidia’s previous “Companion Core” strategy for Tegra, only in reverse — fairly than possessing a single small-electricity core for light-weight workloads, Intel has a single significant-electricity core to deal with the heavy lifting. We’ll see if the diverse strategy yields diverse final results as soon as hardware like the Samsung Galaxy E-book S, Lenovo ThinkPad X1 Fold, and Microsoft Surface E-book Neo develop into readily available.