Intel “Q46W”: Meteor Lake-S desktop CPU appears as an engineering sample – without Hyper-Threading

The Meteor Lake architecture was originally intended to remain exclusive to the mobile segment. Desktop versions were never officially announced and were considered to have been canceled. But now a strange CPU discovery is causing a stir: The processor appearing under the designation Q46W seems to be just that – a desktop variant based on Meteor Lake, but with some notable deviations from known Intel standards.

Surprise from the box: Meteor Lake-S is alive – somehow

The QDF number “Q46W” indicates an engineering sample (presumably ES2 stage), which according to the imprint was produced in the 51st calendar week of 2023 – well after the rumored information that Meteor Lake-S was discarded for the market. It is therefore most likely an internal test object for OEMs or mainboard manufacturers that either never went into series production or was intended for special platform tests.

Key technical data: 6 8 cores, but without SMT

The Q46W has 6 performance cores (P cores) and 8 efficiency cores (E cores), resulting in a 14-core design with 14 threads – unusual, as the Hyper-Threading function (SMT) is deactivated on the P cores. This is not only technically remarkable, but also allows conclusions to be drawn about a possible reduction of the design – be it for power saving optimization, thermal relief or simply for stability reasons in this expansion stage. The base frequency is 2.8 GHz, with up to 4.5 GHz possible in Turbo mode. Each P-core has 2 MB of L3 cache, which corresponds to the Meteor Lake specification. The TDP value (PL1) is 65 watts, with a PL2 of 135 watts. All in all, a configuration that has been adapted to desktop conditions – presumably for the LGA1851 socket.

Brief technical overview

Benchmarks: Numbers without gloss

In the CPU-Z test, the Q46W achieved 732 points in the single-core benchmark and 5760 points in the multi-core test. The single-core score is therefore on a par with Meteor Lake H processors from the notebook sector, while the multi-core score is significantly lower – presumably due to the lack of SMT and the limited architecture scaling. These figures are rather modest for a desktop CPU from the year 2025, but not all that surprising considering the engineering sample status.

Graphics unit without official blessing

The integrated GPU of the Q46W has the device ID 8086:7D60, but according to reports it is not recognized by the official Intel driver “INF”. Image output could only be activated on compatible hardware with manual intervention. The lack of driver support indicates that this is either an iGPU model that has not yet been finalized or that this SKU was never intended for the official market.

Special platform required

Some of the leaked specimens come from second-hand sources, including the seller tbNick_3u8k4 on the Xianyu platform, who states that the processor can only be booted with a specially adapted mainboard. This indicates a very limited BIOS support, which is common in development. According to the imprint, this example was manufactured in the fourth calendar week of 2024, which suggests that at least some work was still being carried out on this CPU in 2024.

Possible classification and purpose

The existence of the Q46W processor suggests that Intel has carried out serious internal tests for Meteor Lake on the desktop after all – contrary to all official statements. It could be a validation prototype for future LGA1851 mainboards or the upcoming 800 chipset series. It could also be used as an OEM-only product in compact workstations or all-in-one systems with a dedicated GPU, where SMT is not absolutely necessary. The deactivation of Hyper-Threading is technically atypical for Intel and could also indicate the testing of new scheduling mechanisms in conjunction with Windows 11 and the Thread Director technology. Alternatively, a targeted attempt to develop more thermally efficient chips for thermally sensitive OEM environments is also conceivable.

Assessment (without coffee grounds)

The Q46W CPU is not a product for the mass market, but an insight into Intel’s internal test laboratory. The fact that Meteor Lake-S does work on an LGA socket is technically interesting, but will probably remain a side note in the history of architecture. It remains to be seen whether Intel will bring desktop variants of this type back onto the market in the future or whether it will finally take a different path with Arrow Lake-S and the upcoming Panther Lake.

Source: ITHome