Intel’s 1st Gen Core Ultra Meteor Lake CPUs Encounter Sluggish Memory Speeds: A Comparative Analysis with 13th Gen Raptor Lake.


December 21, 2023

Intel's upcoming 1st Gen Core Ultra Meteor Lake CPUs may face challenges with slow memory speeds, as indicated by leaked benchmark results, but it is too early to make a final judgment without official confirmation and comprehensive third-party testing.

  • Revolutionary chiplet-based design
  • Heterogeneous core mixture and varying process technology
  • Official launch and third-party testing yet to be conducted


Intel’s 1st Gen Core Ultra Meteor Lake CPUs Encounter Sluggish Memory Speeds: A Comparative Analysis with 13th Gen Raptor Lake

Intel has been stirring up the tech industry with its upcoming Meteor Lake processors. These chiplet-based CPUs from Team Blue are set to revolutionize the market with their heterogeneous core mixture and varying process technology. However, a recent leak suggests that the Core Ultra chips may face a significant hurdle in the form of slow memory speeds.

According to the leak, the Intel Core Ultra 9 185H, when subjected to the AIDA64 cache/memory benchmark, recorded an L3 cache Latency of 49 ms. This is nearly three times higher (or worse) than the 13th Gen Raptor Lake processors. The L3 read, write, and copy speeds also fell short, dropping to 568/s, 303GB/s, and 372GB/s, respectively. In comparison, the Core i9-13900K reported significantly higher values of 1821GB/s, 636GB/s, and 1,000GB/s for read, write, and copy speeds, with a latency of 16.9ms.

The situation doesn’t improve when we look at the L1 and L2 bandwidth. The 185H chip reported L1 read and write speeds of 1471GB/s and 1479GB/s, while the 13900K achieved 5811GB/s and 3554GB/s, respectively. This means that the Core Ultra chip is four times slower than its 13th Gen counterpart in terms of L1 bandwidth. However, the latency figures for L1 and L2 were relatively closer, coming in at 1.0ns and 0.9ns for the two chips, respectively.

It is worth mentioning that these values might represent the memory bandwidth/latency of the LP cores on the SoC die, as they lack an L3 cache altogether. AIDA64 has recently released a beta patch to address the reported figures on hybrid core processors, but it remains uncertain if these changes will have a significant impact.

While these findings raise concerns about the memory performance of Intel’s 1st Gen Core Ultra Meteor Lake CPUs, it is essential to remember that this is based on leaked information. To draw a definitive conclusion, we must wait for the official launch and subsequent third-party benchmarks.

It is also important to note that unlike AMD’s chiplet CPUs, all of Intel’s P and E cores are located on the same die. This reduces the chances of encountering memory speed penalties, unless we consider the LP cores on the SoC die.

In conclusion, Intel’s 1st Gen Core Ultra Meteor Lake CPUs may face challenges with sluggish memory speeds, as indicated by leaked benchmark results. However, it is too early to make a final judgment without official confirmation and comprehensive third-party testing. As technology enthusiasts eagerly await the official launch, it remains to be seen how Intel will address these potential issues and whether they will impact the overall performance of their highly anticipated processors.

Source: HXL

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Background Information


About AMD: AMD, a large player in the semiconductor industry is known for its powerful processors and graphic solutions, AMD has consistently pushed the boundaries of performance, efficiency, and user experience. With a customer-centric approach, the company has cultivated a reputation for delivering high-performance solutions that cater to the needs of gamers, professionals, and general users. AMD's Ryzen series of processors have redefined the landscape of desktop and laptop computing, offering impressive multi-core performance and competitive pricing that has challenged the dominance of its competitors. Complementing its processor expertise, AMD's Radeon graphics cards have also earned accolades for their efficiency and exceptional graphical capabilities, making them a favored choice among gamers and content creators. The company's commitment to innovation and technology continues to shape the client computing landscape, providing users with powerful tools to fuel their digital endeavors.

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About Intel: Intel Corporation, a global technology leader, is for its semiconductor innovations that power computing and communication devices worldwide. As a pioneer in microprocessor technology, Intel has left an indelible mark on the evolution of computing with its processors that drive everything from PCs to data centers and beyond. With a history of advancements, Intel's relentless pursuit of innovation continues to shape the digital landscape, offering solutions that empower businesses and individuals to achieve new levels of productivity and connectivity.

Intel website  Intel LinkedIn

Technology Explained


chiplet: Chiplets are a new type of technology that is revolutionizing the computer industry. They are small, modular components that can be used to build powerful computing systems. Chiplets are designed to be used in combination with other components, such as processors, memory, and storage, to create a complete system. This allows for more efficient and cost-effective production of computers, as well as more powerful and versatile systems. Chiplets can be used to create powerful gaming PCs, high-end workstations, and even supercomputers. They are also being used in the development of artificial intelligence and machine learning applications. Chiplets are an exciting new technology that is changing the way we build and use computers.


L3 cache: L3 cache is a type of computer memory that is used to store frequently used data and instructions. It is located between the processor and main memory, and is used to reduce the amount of time it takes for the processor to access data from main memory. This helps to improve the overall performance of the computer. In the computer industry, L3 cache is used in many applications, such as gaming, video editing, and web browsing. It can also be used to improve the performance of servers and other high-performance computing tasks. By providing faster access to data, L3 cache can help to reduce the amount of time it takes for a computer to complete a task.


Latency: Technology latency is the time it takes for a computer system to respond to a request. It is an important factor in the performance of computer systems, as it affects the speed and efficiency of data processing. In the computer industry, latency is a major factor in the performance of computer networks, storage systems, and other computer systems. Low latency is essential for applications that require fast response times, such as online gaming, streaming media, and real-time data processing. High latency can cause delays in data processing, resulting in slow response times and poor performance. To reduce latency, computer systems use various techniques such as caching, load balancing, and parallel processing. By reducing latency, computer systems can provide faster response times and improved performance.


SoC: A System-on-Chip (SoC) is a highly integrated semiconductor device that encapsulates various electronic components, including processors, memory, input/output interfaces, and often specialized hardware components, all on a single chip. SoCs are designed to provide a complete computing system or subsystem within a single chip package, offering enhanced performance, power efficiency, and compactness. They are commonly used in a wide range of devices, from smartphones and tablets to embedded systems and IoT devices, streamlining hardware complexity and facilitating efficient integration of multiple functions onto a single chip.





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