Intel's 'Nova Lake-S' Leak: How the 28-Core Core Ultra 4970K Answers AMD's 3D V-Cache

Intel Nova Lake-S is suddenly looking much more interesting for PC gamers.

A fresh leak has revealed what could be one of Intel's most aggressive desktop CPU configurations in years: the Core Ultra 9 4970K BFC, a 28-core processor reportedly combining 8 performance cores, 16 efficiency cores and 4 low-power efficiency cores with Intel's new big Last Level Cache, or bLLC. The leaked part is listed at 125W and is expected to sit above the previously leaked Core Ultra 9 4950K.

The important part of this Intel Nova Lake-S leak is not simply the core count. It is the cache.

Intel appears to be preparing a much larger-cache variant specifically designed to attack one of AMD's biggest advantages in modern gaming CPUs: 3D V-Cache. Previous Nova Lake leaks have pointed toward as much as 144MB of bLLC on single-compute-tile chips, while larger dual-tile configurations have reportedly been associated with up to 288MB.

None of these specifications are officially confirmed by Intel yet. But if the leaked lineup is accurate, Nova Lake could represent a major change in how Intel approaches gaming CPU design.

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What the New Nova Lake-S Leak Actually Shows

The latest leak reportedly comes from LC Tech Leaks and identifies seven Nova Lake-S desktop processors across the Core Ultra 5, Core Ultra 7 and Core Ultra 9 families.

The flagship entry is the Core Ultra 9 4970K BFC.

According to the leaked specifications, it features:

The striking detail is that Intel is apparently not treating bLLC as something reserved exclusively for the absolute top of the stack.

The leaked list includes three BFC models, including the 4970K, 4870K and 4900. That suggests Intel may be experimenting with cache-heavy variants at multiple price and performance levels.

But there is an important caveat.

The "BFC" branding is not officially explained by Intel. Reports currently associate it with the bLLC configuration, but the exact meaning of the suffix remains unconfirmed.

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The 28-Core Core Ultra 9 4970K BFC

The Core Ultra 9 4970K BFC is the processor attracting most of the attention.

The leaked configuration consists of 8 P-cores, 16 E-cores and 4 LP-E cores. That produces 28 CPU cores on a single compute tile. The processor is also listed with a 125W base power rating and a 32-EU integrated GPU.

Interestingly, the leaked Core Ultra 9 4950K appears to have the same broad 8+16+4 configuration but without the BFC designation.

That creates a fascinating possibility.

Intel could be preparing two versions of a high-end Nova Lake processor with similar core resources but very different cache configurations.

One would essentially prioritize the conventional CPU design.

The other would add a huge cache pool intended to keep frequently accessed game data closer to the cores.

That is precisely where the comparison with AMD becomes unavoidable.

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PHOTO 2: 28-Core Nova Lake Architecture

Real image/source: Nova Lake-S architecture and leaked SKU reporting.

Alt text: Conceptual diagram of a 28-core Intel Nova Lake-S processor with performance and efficiency cores

Caption: The leaked Core Ultra 9 4970K BFC reportedly combines 8 P-cores, 16 E-cores and 4 LP-E cores.

Image Prompt

Create a realistic 16:9 semiconductor architecture visualization of a fictional next-generation desktop CPU inspired by Intel Nova Lake-S. Show a central compute tile containing 8 large performance-core blocks, 16 smaller efficiency-core blocks and 4 low-power core blocks, all connected to a huge shared cache area. Use physically realistic silicon die textures, microscopic circuitry, metallic interconnects and glowing data paths. Dark laboratory background, blue and violet illumination, premium technical magazine aesthetic, highly detailed, photorealistic 8K, no labels, no readable text, no logos, no watermark.

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What Is Intel's bLLC?

bLLC stands for "big Last Level Cache."

In simple terms, it means Intel is reportedly increasing the amount of cache available close to the CPU cores.

Cache is extremely fast memory built into the processor. Instead of constantly reaching out to system RAM, a processor can keep frequently accessed information in its cache hierarchy.

That matters because modern CPUs can execute instructions extremely quickly, while system memory is comparatively slow.

A game might repeatedly access information relating to:

• Character positions

• World geometry

• Physics calculations

• AI states

• Draw-call data

• Object information

• Game logic

• Frequently reused assets

If the processor can find more of that information in fast cache, it can potentially spend less time waiting for data from slower memory.

This is the basic idea behind the gaming advantage associated with AMD's X3D processors.

Intel's bLLC appears to be targeting the same fundamental problem.

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Why Cache Matters So Much for Gaming

Gaming performance is not determined by core count alone.

A 28-core CPU does not automatically outperform a 16-core CPU in games.

Many games are sensitive to latency, cache behavior and how quickly the CPU can feed the GPU with the data it needs.

This is one reason AMD's X3D processors have become such an important part of the gaming CPU market.

AMD's 3D V-Cache technology increases the amount of L3 cache available by stacking additional cache vertically on the processor package.

The result is not simply "more cores." It is a processor architecture designed to keep more useful data close to the CPU.

Intel's proposed bLLC strategy appears to approach the same problem from Intel's own architectural direction.

The interesting question is whether Intel can make its larger cache work efficiently enough to produce a meaningful gaming advantage.

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Intel's Answer to AMD 3D V-Cache

This is where the Nova Lake-S story becomes strategically interesting.

Intel does not need to copy AMD's technology exactly.

It needs to solve the same performance problem.

AMD has demonstrated that adding large amounts of cache can produce substantial gaming benefits in the right workloads. Intel's bLLC approach appears designed around the same principle: give the CPU a larger high-speed data reservoir and reduce expensive trips to system memory.

Previous Nova Lake leaks have suggested that single-compute-tile designs could reach up to 144MB of bLLC. Larger two-tile configurations have reportedly been associated with as much as 288MB.

That would be a major increase in Intel's cache strategy.

However, the comparison needs some caution.

Cache capacity alone does not determine gaming performance.

Architecture, cache latency, core performance, memory latency, scheduling, game-engine behavior and clock speeds all matter.

A CPU with more cache can still lose to a CPU with less cache if the rest of the architecture is slower or less efficient for a particular workload.

So the 144MB figure is interesting, but it is not an FPS number.

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The Interesting Part Is Not Just the 4970K

The 4970K BFC is getting the headlines because it combines the largest leaked single-tile configuration with bLLC.

But the broader lineup may be more important.

The Core Ultra 7 4870K BFC reportedly combines 8 P-cores, 12 E-cores and 4 LP-E cores for 24 total cores, while the standard 4850K appears to use the same broad core configuration without bLLC.

There is also a Core Ultra 9 4900 BFC.

That model reportedly drops to 22 cores and a 65W power rating while retaining the large-cache configuration.

This could make the cache technology relevant beyond extreme enthusiast systems.

If Intel eventually creates several cache-equipped SKUs, buyers may have the option of choosing between more conventional CPU configurations and cache-focused variants depending on their workload.

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Why Intel Is Offering Both Standard and Cache-Heavy CPUs

There is a good reason not to put massive cache on every processor.

Large cache structures consume die area.

They can affect manufacturing costs, packaging complexity and power characteristics.

And not every workload benefits equally from more cache.

A productivity application that scales heavily across CPU cores may prefer additional compute resources or higher sustained clocks.

A game that repeatedly accesses a relatively compact set of data may benefit much more from additional cache.

That means Intel could be positioning bLLC as a specialized performance feature rather than making it universal.

The leaked lineup supports that possibility because BFC models appear alongside otherwise similar standard models.

For consumers, that could eventually create a more obvious choice between a conventional high-end CPU and a gaming-focused cache-heavy variant.

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What 144MB of bLLC Could Mean

The leaked 144MB figure sounds enormous when compared with conventional desktop CPU cache sizes.

But the important question is how that cache is organized and accessed.

Intel's future architecture may divide cache between compute structures or provide different levels of access depending on where the data resides.

That means simply comparing "144MB versus X MB" would not tell the complete performance story.

Latency matters.

Bandwidth matters.

Cache hit rates matter.

The relationship between the CPU cores and cache matters.

Game engines also behave differently from one another.

One title could benefit dramatically from a larger cache, while another might show only a small improvement.

This is why independent benchmarks will ultimately matter much more than leaked specifications.

For now, 144MB should be viewed as a reported architectural target rather than a guaranteed performance advantage.

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Why More Cache Does Not Automatically Mean More FPS

This is the part that could easily get lost in the hype.

A huge cache is an advantage only when the workload can make good use of it.

Imagine two games.

Game A constantly accesses a relatively compact set of data. More cache could allow a greater percentage of that information to remain close to the CPU cores.

Game B continuously streams large amounts of data that do not fit comfortably into cache. The benefit could be considerably smaller.

There is also the question of cache latency.

A larger cache can have different access characteristics from smaller cache levels. The architecture needs to balance capacity, latency and bandwidth.

Then there is the CPU itself.

Nova Lake's actual gaming performance will depend on the performance of its Coyote Cove P-cores, the behavior of its Arctic Wolf E-cores, clock speeds, scheduling and the rest of the platform.

The cache is one part of a much larger equation.

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Nova Lake's Bigger Platform Changes

The Nova Lake story is not limited to cache.

The desktop platform is expected to move to a new LGA 1954 socket and 900-series chipsets. Recent industry certification entries have also pointed toward Intel's Nova Lake-S platform moving closer to launch readiness.

Previous reports have also suggested support for high-speed DDR5 memory and up to 24 PCIe 5.0 lanes directly from the CPU.

That means Nova Lake represents a broader platform transition rather than simply another processor refresh.

The timing is also important.

Current leaks point toward initial 28-core Nova Lake-S processors arriving in Q1 2027, with larger dual-compute-tile configurations potentially following later in 2027.

Intel therefore appears to have plenty of time to refine the lineup before the complete family reaches the market.

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What the Leak Still Does Not Tell Us

There are several major unanswered questions.

First, Intel has not officially confirmed the Core Ultra 9 4970K BFC.

Second, Intel has not confirmed what the BFC suffix actually means.

Third, the exact amount and organization of bLLC on each SKU remains uncertain.

Fourth, we do not yet know how much faster these processors will be in real games.

And fifth, pricing is completely unknown.

Those details matter because a technically impressive processor can become a very different product depending on its price and platform cost.

A 4970K BFC paired with an expensive new motherboard and high-end DDR5 memory would have a different value proposition from a processor that delivers similar gaming performance at a more accessible platform cost.

For now, the leak gives us architecture clues, not a final buying recommendation.

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Could Intel Actually Challenge AMD X3D?

The answer will depend on implementation rather than cache capacity alone.

AMD's X3D processors have established the importance of large CPU cache in gaming. Intel now appears to be preparing a competing philosophy built around bLLC.

That is significant because Intel does not need to win by simply adding more cores.

It needs to improve the relationship between CPU cores, cache and memory.

Nova Lake's reported 28-core 4970K BFC is particularly interesting because it combines a large hybrid-core configuration with the cache technology.

If Intel can deliver strong per-core performance, competitive latency and efficient cache behavior, the result could be a very different gaming CPU from previous Core Ultra desktop generations.

But the opposite is also possible.

If the cache adds cost without producing a large real-world gaming advantage, AMD's existing X3D strategy could remain more compelling for gaming-focused buyers.

That is why the first independent gaming benchmarks will be the real test.

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What PC Gamers Should Watch Next

The next wave of Nova Lake information should answer several important questions.

1. The exact bLLC capacity

The 144MB figure has appeared repeatedly for certain single-tile configurations, but Intel's final SKU-by-SKU implementation remains unconfirmed.

2. Gaming benchmarks

Look for comparisons against AMD X3D processors using the same GPU, memory configuration and game settings.

3. Cache latency

Capacity is only part of the equation. Testing needs to show how quickly different cache levels can actually serve data.

4. Power consumption

The leaked 125W PL1 figures do not tell the entire story of real-world CPU power. Actual boost behavior and motherboard power limits will matter.

5. Pricing

A cache-heavy gaming CPU needs to make sense not only technically but economically.

6. The larger Nova Lake chips

The first 28-core chips are only one part of the rumored Nova Lake family. Larger dual-compute-tile processors could eventually reach much higher core and cache counts.

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The Bigger Picture: Intel Is Changing the Fight

For years, desktop CPU competition was often framed around core counts, clock speeds and process technology.

Gaming has complicated that equation.

AMD's X3D processors demonstrated that changing the memory hierarchy can sometimes produce a bigger gaming impact than simply adding more CPU cores.

Intel's Nova Lake-S leak suggests the company understands that shift.

The Core Ultra 9 4970K BFC is therefore interesting for more than its 28 cores.

It represents the possibility that Intel is building a dedicated high-cache strategy for desktop CPUs.

If the leaked 144MB figure survives into retail products, Intel would have a very different weapon against AMD's cache-heavy gaming processors.

The competition would no longer be simply Intel versus AMD on raw CPU horsepower.

It would also be Intel's bLLC architecture versus AMD's 3D V-Cache approach.

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FAQ

What is Intel Nova Lake-S?

Intel Nova Lake-S is the upcoming generation of Intel desktop processors expected to use the Core Ultra 400-series branding. Current leaks point toward a new LGA 1954 platform and initial desktop models arriving in 2027.

What is the Core Ultra 9 4970K BFC?

It is a leaked Nova Lake-S desktop processor reportedly featuring 28 cores in an 8 P-core, 16 E-core and 4 LP-E-core configuration, alongside a bLLC cache design and a 125W PL1 rating.

What does bLLC mean?

bLLC means big Last Level Cache. It refers to Intel's reported strategy of providing a substantially larger last-level cache on selected Nova Lake processors.

How much cache could Nova Lake have?

Previous leaks have suggested up to 144MB of bLLC on single-compute-tile Nova Lake-S processors and potentially up to 288MB on larger dual-tile configurations. These figures remain unconfirmed by Intel.

Is Intel copying AMD 3D V-Cache?

Not literally. AMD uses vertically stacked 3D V-Cache technology, while Intel's reported bLLC is its own approach to increasing last-level cache. Both strategies target a similar performance problem: reducing reliance on slower system memory for frequently accessed data.

Will the 4970K BFC be the fastest gaming CPU?

It is too early to say. The leaked specifications do not provide real gaming benchmark results, and Intel has not officially announced the processor.

When is Nova Lake-S expected?

Current reporting points toward Q1 2027 for the first 28-core Nova Lake-S desktop processors, although Intel has not publicly confirmed the exact launch schedule.

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Final Take

The latest Intel Nova Lake-S leak is important because it suggests Intel is preparing more than a conventional core-count upgrade.

The rumored Core Ultra 9 4970K BFC combines 28 cores with Intel's new bLLC strategy, while the reported cache capacity of up to 144MB on single-tile designs would give Intel a dramatically different approach to gaming performance.

The bigger story is the change in strategy.

AMD showed the PC market that massive cache can be a powerful gaming weapon with its X3D processors. Intel now appears ready to fight that battle with its own architecture.

Whether bLLC actually beats 3D V-Cache will not be decided by a leak, a core-count table or a cache-size comparison.

It will be decided when retail Nova Lake processors are tested across real games, real applications, power limits and real prices.

For now, though, Intel's message is becoming increasingly clear: the next desktop CPU battle may be fought as much inside the cache hierarchy as it is inside the CPU cores.

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Sources

• VideoCardz, Intel Core Ultra 4000 Nova Lake-S lineup leak and 4970K BFC details.

• Wccftech, Nova Lake desktop lineup and reported 144MB bLLC configuration.

• Tom's Hardware, leaked BFC models and Nova Lake launch information.

• Overclock3D, analysis of the BFC designation and bLLC strategy.

• Tom's Hardware, earlier Nova Lake bLLC and core-configuration reporting.