270Kplus 内存频率超过时5600时核显编解码占用异常

[5AM1RA]

主板：技嘉 Z890M ELITE

处理器：Ultra7 270K Plus

内存：芝奇幻锋戟 XMP 6400 C32

系统：Windows 11 24H2

前几日购买并开始使用这套平台，主板bios及驱动均已使用技嘉GCC或intel驱动程序助手更新为最新版本。今天在使用先前在14600K电脑上用核显进行obs直播的设置在我的270K电脑上直播，发现直播画面异常卡顿，发现核显占用100%，而我之前的电脑核显占用只需要40%即可完成直播任务开始排查问题出处。

不只是obs，动态桌面软件wallpaperengine也出现了这个问题，我在使用wavy grass这个1080p的视频桌面时核显占用非常高且为锯齿状周期性占用率。我附上了图片。这个问题只存在于调用Video Decode和Video Processing两种负载时。单纯调用核显的3D是正常的。

一开始以为是驱动问题，重装两次驱动后依旧，后来我在网上发现可能和内存有关，先是关闭了7200的内存超频使用内存条默认预设XMP6400，问题依旧。最后发现关闭XMP问题就消失了，然后尝试恢复bios全默认状态下仅开启XMP预设，问题再次出现，手动降低发现内存在5600或者更低时核显编解码恢复正常。

也就是说，恢复默认bios预设时，内存频率超过5600会触发这个问题。同一个动态桌面在不同频率下的正常和不正常的占用情况图已附

[Nikhil_Intel]

Hello 5AM1RA,

Thank you for posting on the Intel Community Forum.

Please be informed that I can only support you in English. I have used a web translation tool to translate this response hence, there may be some inaccurate translation.

I’m sorry for the inconvenience you’re experiencing, and I appreciate your patience while this was reviewed. I understand how disruptive the high iGPU usage, stuttering, and encoder load can be.

It appears to be a synchronization conflict between the integrated graphics engine and high-frequency memory modules. To stabilize your system, I recommend the following:

• BIOS Update: Please install the latest firmware from Gigabyte, as recent microcode updates are specifically designed to address these platform stability gaps.
• Memory Specification: For consistent encoding performance, I advise running your memory at the official Intel specification of 5600MHz. Check the specification link:

https://www.intel.com/content/www/us/en/products/sku/245692/intel-core-ultra-7-processor-270k-plus-…

If the problem persists at 5600MHz after the update, please share your Intel® System Support Utility (SSU) log (with the "Network" option unchecked) so we can investigate further. Here is the link for SSU log:

 Intel® System Support Utility for Windows*

Thank you for your time and cooperation. I look forward to your update.

Best regards,

Nikhil

Intel Customer Support Technician

[5AM1RA · Accepted solution]

感谢回复

昨天提问时我的bios版本是技嘉最新的F20

今天在看到回复后第一时间去技嘉官方下载了最新发布的F21a版本bios，更新后核显可以在内存7200频率下正常工作了。

更高的频率我暂时没法测试，因为我的内存没法在XMP7600或者更高频率状态下稳定工作。

总之感谢如此迅速的解决问题，目前的内存频率已经可以满足我的使用了，希望后续能好的优化intel产品的使用体验。

[5AM1RA]

今日发现，F21a版本bios目前并未更新到aorus官网(附图)，需要请去技嘉官网下载。技嘉工单当时也一并提交了，昨天回复说是提交给技术部门测试，等后续的bios更新。

[Nikhil_Intel]

Hello 5AM1RA,

I hope you are doing well.

Thank you for the update and for sharing the details.

I’m glad to hear that the issue has been resolved successfully. Based on your confirmation, I will proceed with closing this inquiry. Please feel free to reach out again if you need any further assistance in the future.

If you require any further assistance in the future, please feel free to submit a new request, as this thread will no longer be actively monitored.

Thank you for your cooperation and for working with Intel Customer Support.

Best regards,

Nikhil

Intel Customer Support Technician

[Resolutions404]

This thread is a textbook example of how a well-timed BIOS update can solve what looks like a complex hardware failure. @Nikhil_Intel  deserves praise for his technical intuition; while it’s easy to blame a graphics driver for encoding stutters, he correctly identified that the communication between the Ultra 7 270K Plus and the high-speed Z890 platform required a microcode fix. His advice to check the official 5600MHz specification was a smart baseline that helped the user isolate the memory frequency as the primary trigger.

A huge shout-out to @5AM1RA  for being such a proactive and observant user. His detailed testing - narrowing the issue down to the exact 5600MHz threshold and providing "sawtooth" occupancy graphs - gave support the perfect data to work with. His quick follow-up on the F21a BIOS update confirms that early adopters on the new Intel Core Ultra platforms are the ones helping fine-tune these systems for everyone else.

For everyone following this:

• The Interconnect Link: This issue was likely caused by the Data Fabric or IMC (Integrated Memory Controller) falling out of sync with the iGPU's video engine at high gear ratios. When the memory clocks too high on early firmware, the hardware decoders can struggle with "wait states," leading to that 100% erratic usage.

• Gigabyte F21a: This specific firmware contains the latest Intel Lunar Lake/Arrow Lake microcode updates that optimize the "Memory to iGPU" bandwidth, which is why the user can now hit 7200MHz without the encoders choking.

A perfect "win-win" resolution for a cutting-edge platform!

Your friendly neighbourhood user