Last month, we released the first beta of OCCT v17, introducing one of the biggest evolutions in OCCT's history: a completely redesigned and fully modular Memory Test.

Today, we're rolling out the second and last phase of the v17 beta update, bringing 

major optimizations and quality-of-life improvements across the entire application.

 From significantly faster startup times and reduced memory usage to improved crash recovery, this update focuses on making OCCT faster, lighter, and more stable.

And because we're incredibly excited to see what the community can build with the new Memory Test system, 

 where 3 lucky winners will receive 3 years of OCCT Supporter Edition (more details below).

The first OCCT v17 beta last month introduced a full redesign of the Memory Test, rebuilt entirely from scratch around a highly modular architecture.

 that can be freely combined to create highly customized memory stress tests. This makes the new OCCT Memory Test one of the most flexible and customizable memory validation solutions available.

Optimizations and Quality-of-Life Improvements

In this second wave of the v17 beta, we focused heavily on performance, reliability, and overall usability. Here are some of the key improvements included in this update:

We wanted OCCT to be faster from the very start, so we have built a brand-new launcher. While you may not notice visible interface changes, internal testing shows startup times improved by approximately 10% to 30%.

Reducing OCCT's resource consumption has always been a priority, especially for stress testing scenarios where system resources should remain available for the workloads being tested.

With v17 Beta, overall memory usage has been reduced by approximately 15% to 30%. In addition, monitoring data is now written directly to disk, further lowering memory usage mid-certificate.

To increase reliability when running OCCT from USB drives, external storage, or network locations, parts of the application will now reside in the system's temporary folder during execution.

Keeping OCCT updated is essential to ensure users always have access to the latest fixes, optimizations, and testing features. For v17, the update process has been reworked to improve reliability.

IMPROVED CRASH RECOVERY AND SAVE STATE SYSTEM - 

To improve post-crash diagnostics, we have significantly enhanced OCCT's “Save State to Disk” functionality. OCCT will now preserve the latest known application state more reliably, making it easier to investigate failures and understand the system conditions leading up to a crash or freeze.

To help grow the new Memory Test ecosystem, we're looking to 

integrate more community-created presets directly into OCCT.

 And to encourage experimentation, we are currently hosting 

a community contest on our Discord server

Participants can download OCCT v17.0.0.b11 where the free version’s Memory Test duration limit has been temporarily removed, giving everyone more freedom to design advanced testing scenarios.

Share it in the memory-test-presets section on Discord

Our team will select the 3 best presets, which will then be officially integrated into OCCT. The creators of the selected presets will each receive 

We genuinely cannot wait to see the kinds of creative and powerful tests the community comes up with!

As with every beta release, community feedback remains extremely important to us. If you encounter bugs, stability issues, unexpected behavior, or simply have suggestions for improvements, feel free to reach out through 

With the second phase of the OCCT v17 beta now live, we're excited to share the latest updates, including a new memory test, significant optimizations across the software, and a community contest to celebrate the launch.

OCCT v17 Beta: New Memory Test, Major Optimizations, and A Community Contest

, the OCCT team will be in Taipei attending Computex, one of the world's leading technology trade shows, bringing together innovators, hardware manufacturers, system integrators, and technology enthusiasts from across the globe.

We're proud to be part of this year's event and look forward to meeting partners, customers, and the wider PC hardware community in person. Join us at 

our booth N1229, at the Taipei Nangang Exhibition Center, Hall 1, 4F!

Discover the latest developments and features coming to OCCT, including the new memory test and our On-Premise solution

Learn how OCCT helps ensure the stability and reliability of PCs, servers, and workstations

See live demonstrations of OCCT's stress testing and monitoring capabilities

Discuss how OCCT can help your production lines

Whether you are a hardware manufacturer, system builder, overclocking enthusiast, reviewer, or simply curious about hardware testing and validation, we would love to talk with you.

If you'll be attending COMPUTEX this year, make sure to stop by our booth (Hall 1, 4F - N1229) and say hello.

We're excited to announce that OCCT will be attending Computex 2026 with our own booth at the Taipei Nangang Exhibition Center!

OCCT is heading to Computex Taipei 2026

OCCT v17 Beta introduces a complete redesign of the Memory Test. This new version is built around 

a highly modular system, launching with 16 distinct blocks

, including our legacy test for those who prefer a familiar approach. This is one of the most customizable memory testing solutions available today.

You now have full control over how your memory stress tests are built and executed.

Traditionally, a stress test relies on predefined profiles with fixed instructions in a rigid sequence. With the new test, we wanted to go further, give you more flexibility.

We've broken down the traditional testing model into individual building blocks. 

Each block performs a specific function, and you can combine them 

to create a test tailored to your exact needs.

At launch, the beta includes 16 blocks inspired by TM5 and MemTest86. These are not reused implementations; we analyzed and rebuilt them from the ground up within OCCT.

The key difference with this modular approach is that you are in full control. This design also enables you to 

create custom presets, save them, and share them 

The 16 different blocks are organized in 

Non-idempotent tests – Modify the memory state by writing specific patterns.

Idempotent tests – Move data around while preserving the initial memory state.

Check block – Responsible for detecting errors. (Important: tests do not check for errors unless a check block is included.)

All-in-one block – Predefined combinations of blocks, always including error checking. This category includes OCCT’s legacy memory test.

Utility blocks - Designed to provide more flexibility, such as waiting blocks and loop blocks.

Start with a non-idempotent block to write a pattern into memory

Apply idempotent blocks and/or utility blocks to stress the data

Finish with a check block to detect potential errors

precise control over both the behavior and intensity of your tests.

 This is just an example of what you can do, but for a deeper dive into the block system, check out the announcement video above.

While the modular system offers powerful customization, we know not everyone wants to build tests from scratch. That's why OCCT v17 includes:

Built-in presets based on popular stress tests

The ability to create, save, and share your own presets

Support for importing external tests (including TM5 configurations)

If a test you commonly use isn't included in the beta, you can easily import it—we've provided 

 In fact, this beta already ships with its first community contribution: a preset created by Discord user Paimon.

Given the scale of this overhaul, your feedback is essential! If you're testing the beta and have suggestions, ideas for new blocks, or improvements you'd like to see, please reach out via 

This means some features may evolve before the final release, and additional community presets may be included by default at launch.

The beta is available for download now (if you are a Supporter), and we look forward to hearing your thoughts!

OCCT v17 is now in open beta, featuring a complete overhaul of the Memory test aimed at providing a highly customizable testing solution

OCCT v17 beta: A major overhaul of the Memory test

We're happy to announce that OCCT V16.1 is now officially available, bringing 

expanded support for our System Tuning tool

 and extending compatibility to Intel's latest CPU: 

This release builds on the foundation introduced in OCCT v16, where we launched our new System Tuning tool with initial support for Intel Granite Rapids processors.

, including the newly released Arrow Lake Refresh, allowing users to take full advantage of native tuning capabilities directly within OCCT.

The System Tuning tool was designed to simplify and unify the CPU tuning process by 

combining configuration and testing within a single software.

Run stability tests during the tuning process

Adjust per-core frequencies (16.6 MHz steps on Arrow Lake)

This approach removes the need for multiple tools while improving the speed and reliability of system stability and overclocking validation.

Expanding hardware compatibility remains a key focus. With Arrow Lake now supported alongside Granite Rapids, we're already 

working on bringing the System Tuning feature to more

 current and previous generations of CPUs.

As always, we welcome your feedback as we continue to improve the System Tuning tool and expand its capabilities.

Following a successful open beta, OCCT v16.1 is now available as a stable release, bringing support for Intel Arrow Lake CPUs to the System Tuning tool.

OCCT v16.1 Stable version is now available

, we'll be in Germany attending CloudFest, one of the leading events for cloud computing and infrastructure professionals. This is a great opportunity to connect with industry experts and partners from around the world.

showcasing the latest features of OCCT, along with our on-premise solution

 designed to meet the needs of professionals looking for powerful, flexible, and secure testing tools.

you'll find us at the Startup Alley, table S03.

, where we can discuss our latest developments, explore real-world use cases, and see firsthand how OCCT can optimize system performance and stability in complex infrastructure setups.

After an exciting start of the year at CES, it's time for the team to set its sights on the next major event: CloudFest 2026.

OCCT at CloudFest 2026

Last week, we released OCCT v16 and the brand-new System Tuning tool, with support for Intel Granite Rapids processors. Today, we're launching the open beta of OCCT v16.1, adding 

support for Intel Arrow Lake CPUs to the System Tuning tool.

Following today's Intel announcements, we can also confirm that OCCT will support Intel Arrow Lake Refresh CPUs at launch.

Expanding support to Intel's latest platforms

From the very beginning, our goal with the OCCT System Tuning tool has been simple: deliver a streamlined, fully integrated tuning experience directly inside OCCT.

With support for Intel Arrow Lake and the upcoming Arrow Lake Refresh, we're 

 and bringing the System Tuning feature to an even broader community of users. Builders, enthusiasts, and professionals alike will gain access to native tuning capabilities directly within OCCT.

Granite Rapids and Arrow Lake users can now benefit from:

Integrated stability testing during CPU tuning

Per-core frequency control with 16.6 MHz minimum steps (Arrow Lake only)

With this update, we're reinforcing our commitment to bringing the System Tuning tool to as many users as possible. We're already working on 

bringing the feature to more current and past generations of CPUs

, so if your processor is relatively recent, we aim to support it soon.

, with Arrow Lake support currently limited to the open beta. A full release is planned for the end of March.

Following the release of OCCT v16 and its new System Tuning tool which supported Intel Granite Rapids, we're excited to announce that support for Arrow Lake CPUs is now available as well.

OCCT system tuning tool adds support for Intel Arrow Lake

The previously announced System Tuning tool is 

currently supports the latest Intel Granite Rapids CPUs 

as part of our ongoing collaboration with Intel. We can already confirm that support for Arrow Lake CPUs will be available in the coming weeks through an open beta, extending access to a broader range of users.

While support is currently limited to Intel CPUs in the short term, we recognize that this excludes a significant portion of users. 

Expanding compatibility remains a top priority

, and our objective is to support as many CPU generations and vendors as possible.

Intel provided us with the technical documentation required to implement this level of deep integration. To offer the same quality of support for other manufacturers, we would need equivalent access to their documentation, and we are actively working to obtain it.

System tuning in OCCT: combining stability and tuning in a single workflow

The new System Tuning tool is fully integrated into OCCT on both Windows and Linux. Our goal is simple: provide a streamlined, reliable, and professional tuning experience.

Tune supported CPUs (starting with Granite Rapids) directly within OCCT 

Combine CPU tuning and stress testing inside a single application

Adjust per-core frequencies with fine-grained 16.6 MHz steps (for upcoming Arrow Lake support)

Benefit from built-in safeguards for beginners while retaining full control for advanced overclockers

Contrary to external tuning utilities, OCCT's tuning tool is fully integrated into the OCCT ecosystem, allowing users to seamlessly 

manage performance adjustments alongside OCCT's stress tests

, enabling real-time tuning and immediate stability verification without switching applications.

Rather than juggling multiple tools, users benefit from a workflow built around clarity, precision, and reliability. This approach enables 

significantly faster iteration between tuning and validation

, which is critical when pushing hardware to its limits, while offering fine-grained control over every aspect of the overclocking process.

Available on both Windows and Linux, this also marks the first time a fully integrated CPU tuning tool of this kind has been brought to Linux within OCCT.

Since this tool allows users to directly adjust settings that may impact system stability, a 

. While it is active, the maximum voltage that can be set is limited. Given the technical nature of the parameters involved, we will be releasing additional information and tutorials for beginners in the coming weeks.

Advanced users will, of course, be able to disable this limitation and fine-tune settings as they see fit.

Introducing live CPU parameter adjustments while a stress test is running required significant UI improvements.

ongoing test window has been moved to the right side 

as a dedicated, collapsible panel. This allows users to monitor detailed test information while simultaneously accessing tuning controls.

While the layout may feel different for long-time OCCT users, this redesign was necessary to preserve clarity and readability. It also ensures we can continue expanding the software with new features without compromising usability.

Alongside the System Tuning tool, we are releasing a brand-new Intel skin for OCCT.

 or selecting it directly from the settings menu.

Announced last month, OCCT's new system tuning tool is now available in OCCT v16, offering native support for Intel CPUs starting with Granite Rapids.

OCCT v16: New system tuning tool now available, compatible with Intel Granite Rapids

This collaboration aims to simplify and centralize CPU tuning for Intel processors (starting with Granite Rapids) by integrating advanced overclocking controls straight into OCCT's interface, no extra utilities required.

While our long-term objective is to support every CPU, this new tuning tool initially focuses on Intel CPUs, starting with Granite Rapids, and is fully integrated into OCCT. Users will be able to 

access all essential tuning parameters from a single, familiar environment

, making it easier than ever to fine-tune performance and stability.

Whether you are an enthusiast pushing limits or a professional looking for precise control, the goal is to offer a streamlined and reliable tuning experience.

Inside OCCT, a new “Tuning” section will be available. From this section, you will be able to:

Make precise modifications without leaving OCCT

combine tuning and stress testing in one workflow

, reducing friction and improving efficiency.

built-in safeguards help prevent common mistakes

, making the tool approachable for beginners, while still offering a fully unrestricted experience for advanced overclockers who want complete control.

Unlike external tuning utilities, OCCT's tuning tool is:

Designed to work seamlessly alongside OCCT's stress tests

Focused on clarity, precision, and reliability rather than juggling multiple applications

OCCT's UI has been greatly updated to accommodate this new functionality and allowing live modifications of CPU parameters while a stress test is running.

faster iteration between tuning and validation

, which is critical when pushing hardware to its limits, while also giving users finer control over every aspect of their overclocking process.

, with a public release expected in the coming weeks.

More details will be shared as we approach launch.

A collaboration with Intel wouldn't be complete without visual customization.

Alongside the tuning tool, we will also be releasing a 

, allowing users to apply Intel's colors and identity directly within OCCT.

Ocbase is proud to announce a new partnership with Intel, bringing a dedicated processor tuning tool directly into OCCT.

A collaboration with Intel: A new processor tuning tool comes to OCCT

 partnership with Japanese tech Youtuber Mono

 just as they reached ten thousand subscribers. Today, we're back to celebrate yet another milestone in Mono's journey: 

 Congratulations, Mono! We're proud to have you as part of the OCCT family.

And what better way to celebrate than with 

With today's update, we're introducing the OCCT x Mono skin for OCCT. You can download the skin directly from 

 or simply switch your updated version of OCCT to Mono's color theme in the settings.

The skin features shades of grey and purple to match Mono's signature color palette, and includes an illustration of Mono-san in the bottom-right corner.

We're proud to collaborate with amazing partners like Mono-san, and we can't thank them enough for their contribution and the positive impact they bring to the Japanese PC enthusiast community.

, and thank you! We look forward to seeing you reach even greater heights in the future.

We're excited to celebrate Kuroto Mono's 20k subscribers milestone with a special OCCT skin collaboration!

OCCT reveals new skin collaboration with Japanese YouTuber Kuroto Mono

CES (Consumer Electronics Show) is one of the world's largest and most influential technology events, bringing together the latest innovations and trends across a wide range of industries. This year, we're thrilled to be part of the show and to connect with fellow tech enthusiasts, industry professionals, and OCCT users from around the globe.

CES 2026 will be the perfect opportunity to showcase the latest updates to OCCT, including our 

, highlighting how our complete test suite, remote diagnostics, and automation features can help streamline hardware testing and monitoring workflows.

For the first time, we'll also be presenting our 

, designed for professionals who need to host their OCCT data locally for enhanced security, control, and compliance.

If you're attending CES 2026, we'd love to meet you! Whether you're a long-time OCCT user or discovering our software for the first time, come visit us from January 6 to 9 at the 

Caesars Palace Convention Center – Salerno Room

. Our team will be happy to answer your questions and discuss how the latest OCCT improvements can help optimize and simplify your hardware testing processes.

We're excited to announce that OCCT will have a dedicated demo space at CES 2026 in Las Vegas from January 6 to 9. 

OCCT at CES 2026

GPU's are difficult to stress test. Unlike CPUs or RAM, they are often the only component in a PC that is not designed to work at 100% load. As graphics hardware evolves with 

increasingly dynamic power and frequency behavior

, traditional full-load tests no longer reflect real usage nor reliably expose stability issues.

Unlike CPUs and RAM, which can be stressed safely at 100% for quick stability detection, 

GPUs are not designed to run at maximum load.

 In gaming, the workload is highly dynamic and typically averages around 50% real utilization.

Why? Because of the CPU-GPU dependency loop. Playing a game involves both components, it's a fifty-fifty between the CPU and the GPU. The CPU handles game logic, object positions, inputs, sound and world state, while the GPU renders textures, meshes, shaders, effects, and the final frame. Both wait for each other during this process.

GPUs never really reach their absolute maximum power draw during real gameplay.

 Manufacturers eventually optimized designs around this reality: peak clock speeds now occur at medium load (40% to 60%), instead of at 100%.

This results in an efficiency curve where lower load equals higher clocks, while higher load produces lower clocks. Crucially, following this logic, many GPUs are stable under 100% load but unstable at their peak-frequency mid-load states.

It's a very complex scenario and it needed a novel approach.

Why Traditional Testing Doesn't Work (Anymore)

Traditionally, classic GPU stress tests force the card to full power instantly. But this approach no longer reflects real life conditions, because if the GPU is pushed to 100%, then it’s not operating at its max clock speed. A stress test pushing your GPU to 100% might display no error, but you could encounter an error at 50%.

For example, comparing OCCT's 3D Adaptive test with a FurMark test on a RTX4070 Ti shows that FurMark locks to max power instantly, while 

In this article, we explain why GPUs require a new testing methodology and how OCCT's latest updates solves this problem.

Our latest news

OCCT v17 Beta: New Memory Test, Major Optimizations, and A Community Contest

OCCT

2026-05-22

OCCT is heading to Computex Taipei 2026

Ocbase

2026-05-21

OCCT v17 beta: A major overhaul of the Memory test

OCCT

2026-04-09

OCCT

OCCT v16.1 Stable version is now available

2026-03-23

Ocbase

OCCT at CloudFest 2026

2026-03-20

OCCT

OCCT system tuning tool adds support for Intel Arrow Lake

2026-03-11

OCCT

OCCT v16: New system tuning tool now available, compatible with Intel Granite Rapids

2026-03-02

OCCT

A collaboration with Intel: A new processor tuning tool comes to OCCT

2026-02-02

Ocbase

OCCT reveals new skin collaboration with Japanese YouTuber Kuroto Mono

2025-12-24

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