Set as Homepage - Add to Favorites

日韩欧美成人一区二区三区免费-日韩欧美成人免费中文字幕-日韩欧美成人免费观看-日韩欧美成人免-日韩欧美不卡一区-日韩欧美爱情中文字幕在线

【sexuality definition eroticism sensuality nurse】Patched Laptops: Testing Meltdown & Spectre Patches on Ultraportable

You've probably seen our coverage and sexuality definition eroticism sensuality nursetests over the past few weeks on the Meltdown and Spectre vulnerabilities, or more specifically the performance drops you can expect from the patches that address these issues. We've already covered what you can expect on modern desktop systems, however today we'll be diving into the mobile side of things to see how Meltdown and Spectre patches affect ultraportable laptops.

At this stage, patches for laptops are much more widely available than on desktops, especially from big name manufacturers. This makes it easier to test older hardware platforms, so today we'll be looking at the impact on both the latest 8th gen Intel U-series parts, along with a 3 year old 5th gen Broadwell-based laptop.

Both of the laptops I'm using for this test are Dell XPS 13, which should be representative of most premium ultraportable systems with 15W CPUs inside. The newer XPS 13 9360 model is powered by a Core i7-8550U with 8GB of RAM and a 256GB Samsung PM961 PCIe SSD. The older Broadwell model (XPS 13 9343) comes with a Core i5-5200U, 8GB of RAM, and a 256GB Samsung PM851 SATA SSD.

As with desktops, patching these laptops requires two separate updates: a BIOS update specific to the device that tackles Spectre vulnerabilities, along with a recent Windows Update that kills Meltdown and supports the Spectre BIOS patch.

We've tested the laptops in two configurations: before either update was applied and after both updates were applied. This will give us a good idea of how the performance differs between an unpatched system and a fully protected system (with the current set of patches).

We should note that the performance differences you see here may not apply to all laptops with this sort of hardware inside, but it should give a good indication of how these patches affect a more performance-constrained system.

Let's kick things off by looking at PCMark, which is a set of workloads designed to simulate real world tasks. Across the main PCMark 8 tests, there isn't a significant impact from the Meltdown and Spectre patches, with performance declining by just a few percent in most cases. This is margin of error type stuff, and for most cases won't be a noticeable difference in performance.

Cinebench R15 is an interesting one as we do start to see some performance degradation. The 8th gen platform seems to be more heavily affected here, dropping by seven percent in the multi-thread workload and three percent in the single-thread workload.

Broadwell was still affected, but the difference was negligible in the single-thread test and just four percent in multi-threaded.

Cinebench isn't the only rendering test that's been affected. While rendering x264 videos in a two-pass encode, pass one performance dropped on both Kaby Lake Refresh and Broadwell, to the tune of 8 and 4 percent respectively. The more intensive pass 2, where most of the actual encoding occurs, isn't significantly slowed on the i7-8550U but does suffer a marginal decrease on the i5-5200U.

Interestingly, rendering an x265 video in Handbrake with a single pass actually improves marginally in performance after the update, particularly on Broadwell where the render time is cut by 5 percent. So it's not necessarily every rendering workload that is affected by the patches.

The final video rendering test I have is Premiere, which is affected by the Spectre and Meltdown patches. On the i7-8550U, both the Lumetri-effect enhanced test and the non-Lumetri test declined by around five percent, although the performance decline is slightly higher on the i5-5200U.

On a performance constrained device like an ultraportable, seeing any performance slowdowns in Premiere is a big deal as most of these laptops run a fine line between being capable of editing videos, and delivering a choppy mess.

0.137s , 10016.4921875 kb

Copyright © 2025 Powered by 【sexuality definition eroticism sensuality nurse】Patched Laptops: Testing Meltdown & Spectre Patches on Ultraportable,Public Opinion Flash  

Sitemap

Top 主站蜘蛛池模板: av一级在线观 | 国产成人无码av高清在线 | 无码视频一区二区三区在线观看 | 精品久久一区 | 日本熟妇乱子a片另类 | 久久精品老熟女人妻毛片 | 高清精品一区二区三区 | 日日夜夜天天爱 | 久久精品视频3 | 国产麻豆放荡av剧情演绎 | 久99久爱精品免费观看视频 | 91一区二区三区在线观看 | 国产又粗又长又硬又猛A片 国产又大又粗又硬的A片 | 国产乱伦无码 | 精品露脸国产偷人在视频7 精品乱码8久久久久久日本 | 久久久精品人妻一区二区三区图 | 亚洲一级视频在线观看 | 日韩高清一区二区三区不卡 | 亚洲欧美国产日本 | 少妇和黑人老外做爰 | 日韩中文永久免费观看电视剧 | 激情婷婷丁香 | 国产啪亚洲欧美精品无码 | 亚洲永久精品大片www | 人妻夜夜爽天天爽三区麻豆au | 久久久国产这里有的是精品 | 久久综合九色综合 | 欧美精品久久99人妻无码 | 久久精品一区二区免费看 | 久久在精品线影院 | 韩国羞羞秘密教学子开车漫书 | 无码日韩一二三四 | 国产成人av激情在线播放 | 亚洲伦理一区二区三区 | 狠狠色狠狠色综合日日92 | 国产欧美日韩不卡在线观看 | 曰曰日在线 | 久久久99精品久久久 | 国内美女国产三级视频 | 在线精品国精品国产不卡 | 日韩精品无码视频免费专区 |