Patches are also available for the Linux kernel. *Other names and brands may be claimed as the property of others. Bounds check bypass mitigations have performance impacts, so they should only be used where appropriate. Generally speaking, a convertible is supposed to be portable to a certain degree; the case must be rigid and battery life must be long enough. Microsoft plans to perform its own benchmarks and release more details in the future, but we don’t know exactly how much Meltdown’s patch will affect day-to-day PC use yet. Unfortunately, a full-sized SD card reader would not have fit into the slim and compact case. Unlike the Spectre 13 Ultrabook, last year’s Spectre x360 Convertible was already equipped with a 4K touchscreen. The front rubber strip can remain attached and does not have to be removed. An application can attempt to read memory and, if it reads something in the cache, the operation will complete faster. Refer to the Analyzing Potential Bounds Check Bypass Vulnerabilities white paper for full analysis and mitigation of bounds check bypass. The LFENCE instruction, or any serializing instruction, can serve as such a barrier. These deviations from the reference color space are higher than on most competitors including the Spectre’s own predecessor and the Spectre 13 Ultrabook. What the Core i7-8550U is capable of was revealed during the Cinebench R15 benchmark.

Intel said you should wait for a final UEFI firmware patch that’s been properly tested and won’t cause system problems. In comparison, the convertible’s 60 Wh battery is significantly larger, and it shows: the Spectre x360 lasted for 8-9 hours in our Wi-Fi test and 2.5 hours in BatterEater’s load test. One subvariant of this technique, known as bounds check bypass store, uses speculative stores to overwrite younger speculative loads in a way that creates a side channel controlled by a malicious actor.

Software and workloads used in performance tests may have been optimized for performance only on Intel microprocessors. Under load, our review unit was the only FHD-equipped notebook with an average of less than 30 W. Accordingly, the 65 W power supply is amply dimensioned. The German keyboard layout was slightly unconventional, but we won’t go into detail since this does not affect the default US keyboard layout.

Unlike during our Cinebench loop, which we are going to discuss in more detail later on, we only run Cinebench R15 once in order to determine the single-core and multi-core scores. When compared to its competitors, the Spectre x360 turned out to be significantly brighter than the Lenovo Yoga 920 but was unable to keep up with the Dell XPS 13 and the Lenovo ThinkPad X1 Yoga 2018 that is currently still in review. The right-hand side features two USB Type-C ports with support for Thunderbolt 3.0 with transfer rates of up to 40 Gbit/s thanks to their PCIe x4 interface. If it tries to read something not in the cache, it will complete slower. Dave Hansen, a Linux kernel developer who works at Intel, originally wrote that the changes being made in the Linux kernel will affect everything. If you don’t see one, check back in the future for your PC’s update if it isn’t yet available. Our review unit was equipped with the FHD display option (166 ppi) and featured a Chi Mei CMN1376 panel. Mitigation options include manual and compiler assisted. | Lenovo Yoga C930-13IKB (i5-8250U, FHD) Convertible Review, 13.3-inch lightweight.

Comparable 13-inch units equipped with the same Core i7-8550U processor are the Lenovo Yoga 920, Dell XPS 13, Acer Spin 5, Asus ZenBook 13, the x360’s own predecessor, and of course the recently released HP Spectre 13 Ultrabook. While a performance hit sounds bad, we strongly recommend installing these patches anyway. The price obviously depends on your choice of hardware, and the device can be configured according to your individual liking in HP’s web store. If you're looking for information on the Meltdown/Spectre issue, go to Side-Channel Analysis Facts and Intel® Products. There is currently no software fix, and it will likely require a complete hardware redesign for CPUs across the board—though thankfully it is fairly difficult to exploit, according to security researchers. However, the notebook’s Thunderbolt 3.0 port might become a gamer’s best friend as it supports external GPUs at full speed thanks to its internal PCIe x4 connection. The software patch in question will fix the Meltdown flaw, and some software patches can help mitigate the Spectre flaw. Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications. Refer to Analyzing Potential Bounds Check Bypass Vulnerabilities for further details on bounds check bypass store. Charging from near empty to full takes around 1.5 hours, and the battery charge level reads 50 % after 30 minutes already. This file is subject to change as developers and multiple processor vendors determine their preferred approaches.

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