Intel Nova Lake bLLC Rumors: 288MB Cache, 474W Power and AMD X3D Reality Check

The "catch" in this story is real, but it is mostly about timing, tiering and platform cost. The reported specs are only part of it.

What bLLC is, and why it matters​

bLLC stands for "Big Last Level Cache." It is Intel's rumored answer to AMD's X3D chips, which gamers have favored since the first 3D V-Cache part, the Ryzen 7 5800X3D, arrived in April 2022. Intel's next-gen Core Ultra 400K "Nova Lake-S" desktop CPUs are reported to carry up to 144MB of bLLC to take on Ryzen 9000X3D.

The idea is simple. Cache sits close to the cores and reduces trips out to system RAM. PC Gamer's coverage makes a useful caveat: extra cache is not a guarantee of better frame rates. Latency and how the cache is wired into the chip matter as much as capacity.

Intel already has this technology in servers. PC Gamer notes that the Clearwater Forest Xeon generation uses it. The desktop version is the part that remains unconfirmed.

The cache numbers: 288MB, and the competing leaks​

Several leak-driven reports support the headline figure. Wccftech, citing the leaker Jaykihn, reported that bLLC variants would carry up to 144 MB in single-tile and 288 MB in dual-tile configurations.

Comparing that to AMD's current flagship is where it gets messy:

• Dual-tile Nova Lake leak: 288MB.
• Ryzen 9 9950X3D2: Neowin describes it as having double the L3 of the 9950X3D at 192 MB, for 208 MB total cache.
• Gap: Wccftech puts the difference at 80 MB more than the 9950X3D2.

That 80MB gap is the same figure the original MakeUseOf piece uses. It compares total cache pools, though, not performance. The 9950X3D2 is a real AMD part rather than a rumor. Wikipedia says the 9950X3D2 was announced at CES 2026.

The leaks on which SKUs get bLLC are the weaker link, and they conflict:

1. November 2025: Tom's Hardware reported Jaykihn's claim that bLLC would appear only on unlocked "K" SKUs. In that report, early guesses suggested midrange single-tile parts might get it first, while a 180MB Core Ultra 9 had also been mentioned.
2. April 2026: Wccftech listed a different set of capacities: 44 cores with 264 MB, 28 cores with 144 MB, 24 cores with 132 MB, and 22 cores with 108 MB.
3. September 2026: Tom's Hardware, summarizing a leaked slide, said gaming processors may reach 288 MB of bLLC. Based on the report's wording, that figure is tied to a dual-tile, high-core-count part.
4. 2 October 2026: A rumored SKU table lists seven desktop models. Tom's Hardware says it includes three models tagged "BFC," which appears to be Intel's branding for bLLC, with up to 144MB of L3. The table does not include the 52-core model.

The most recent table is the important one. It suggests the 288MB part may not be the first bLLC chip to ship, and perhaps not a mainstream gaming chip at all. Tom's Hardware says the 52-core model and other dual-tile parts will arrive after the main range, probably aimed at the high-end desktop crowd.

That cuts against the MakeUseOf framing in two ways. The 288MB flagship may not be what most gamers would actually be shopping for. And it may be that bLLC reaches more than just the two top-end parts, since the latest table has a 24-core Core Ultra 7 with "BFC" and even a 65W, 22-core Core Ultra 9. Treat all of this as rumor until Intel publishes a spec sheet.

Power: the 474W figure​

MakeUseOf says the 52-core model could exceed 474W at PL2, citing Jaykihn. Tom's Hardware reports the same number, saying dual-compute-tile CPUs will reportedly draw up to 474W and need motherboards with three 12V EPS connectors.

So the number appears in more than one place, but it is still a leak. It describes a peak power limit on a part that may land in a workstation-style tier, not a typical gaming build. It does not tell you what a gaming load would draw, and it tells you nothing about the cooler or PSU you would need. The same leak cycle also includes a rumored 28-core bLLC part. Wccftech's related story says it reportedly draws 296 W PL2, which is a much more reasonable figure.

Timing: late 2026 or 2027?​

The release date is one of the biggest open questions. Tom's Hardware's senior CPU analyst argued in a timeline piece that a late-2026 launch looks more likely. His evidence included CEO Lip-Bu Tan's remark that Nova Lake would arrive at the end of 2026, plus Z990 motherboards showing up in shipping records. The same piece stresses that "likely isn't the same as confirmed."

A leaked partner slide points the other way. It shows mass production in Q4 2026, then:

• Q1 2027: the first 28-core processors.
• Later in 2027: the 52-core models.

VideoCardz says that slide reportedly comes from an Intel partner in China rather than Intel itself, so it isn't official. Tom's Hardware says it doesn't look like an official Intel roadmap and notes that parts of it, like a mention of Hammer Lake, look odd.

In short, even a late-2026 date is not firm, and the very top bLLC configuration is expected later still. MakeUseOf's CES 2027 hope is plausible but unconfirmed.

Platform: a new socket​

Nova Lake-S reportedly uses the LGA 1954 socket with 900-series chipsets. VideoCardz notes Intel has already confirmed the LGA1954 socket, citing a reference on Intel's own design tools site. Tom's Hardware adds that it has seen Z990 boards.

The more interesting claim is longevity. The leaked slide says LGA 1954 is meant to support multiple generations of upgrades. Razor Lake and Hammer Lake are mentioned beyond Nova Lake, though that is unconfirmed too. If it holds, the "new socket" objection would be somewhat softer than the MakeUseOf piece suggests. You would pay the motherboard toll once, not every generation.

MakeUseOf's contrast, that Zen 6 will drop into AM5 boards, is stated as fact in the original. I could not verify it in the material gathered, so treat it as an expectation and check AMD and board-vendor support lists before buying.

AMD's rumored counter​

MakeUseOf cites HXL for a Zen 6 flagship with 24 cores and 240MB of L3. That comes from a rumor mill, not AMD. The predictions that AMD "wins" because of lineup breadth and lower power draw are the author's opinion, not demonstrated results. Fair enough as opinion, but nobody has benchmarked either chip.

What to take from this​

• Cache totals aren't performance. Latency, clocks, core design and software behavior decide frame rates. PC Gamer warns about exactly that.
• The strongest claim is the weakest sourced. The 288MB, 52-core chip is the least likely to be the one most people can buy early.
• Tiering is unsettled. Reports disagree on which models get bLLC, so any "bLLC is only for the priciest chips" conclusion is premature. The October table hints at cheaper BFC parts.
• Don't buy a board on a rumor. Socket and platform details are leaked, apart from LGA 1954 itself.

Bottom line​

If you're building now, buy based on shipping hardware and your own workloads. If you're waiting for Nova Lake, wait for Intel's official specifications and independent reviews that test the BFC and non-BFC models at matched settings, with power, temperature and latency included.

Until then, "beats AMD on paper" really means "beats AMD's cache total in a spreadsheet of leaks." That's interesting, but it isn't a buying verdict.