The Jasper Forest chip is closely related to Lynnfield and contains four cores, 8 MB of L3 cache and a QPI interface, but most of these are disabled in the Celeron version, leaving a single core with 2 MB of L3 cache. The Sandy Bridge-based Celeron processors were released in 2011. They are LGA 1155 processors (available in single- and dual-core versions) with integrated Intel HD Graphics GPU and containing up to 2 MB of L3 cache. Turbo-Boost, AVX and AES-NI have been disabled. Hyper-Threading is available on some single-core models, namely G460, G465 and G470. All Celerons of this generation belong in the G16xx series. They give some boost in performance over Sandy Bridge-based Celerons due to a 22 nm die shrink as well as some other minor improvements. Similar to the Mendocino (Celeron-A): 0.25 μm, 32 KB L1 cache and 128 KB L2 cache, but uses a lower voltage (1.5–1.9 V) and two power-saving modes: Quick Start, and Deep Sleep. Packaged in the small, 615-pin BGA2 or Micro-PGA2 package. These were the first Mobile Celerons based on the Tualatin core. They differed from their desktop counterparts in that the Mobile series were offered in both 100 MHz and 133 MHz FSB. Like the desktop Tualatins, these chips had 256 KB of L2 cache. These are the Mobile Celeron range used in laptops. Also based on the Northwood core, they feature a 256 KB L2 cache. These Celeron processors were a good deal higher performing than the desktop counterparts because of their larger L2 cache sizes. They were eventually replaced by the Celeron M brand which is built around the Pentium M processor design. This Celeron (sold under the Celeron M brand) is based on the "Banias" Pentium M, and differs from its parent in that it has half the L2 cache, and does not support the clock-varying SpeedStep technology. It performs reasonably well compared to the Pentium M, but battery life is noticeably shorter on a Celeron M–based notebook than it is on a comparable Pentium M notebook. A system based on the Celeron M processor may not use the Centrino brand name, regardless of what chipset and Wi-Fi components are used.