Intel Xeon 6+ Clearwater Forest: Which Buyers Should Choose It?

Intel Xeon 6+ Clearwater Forest is worth shortlisting if you run many small, parallel workloads and can use the Xeon 6900 platform. It is not a general replacement for P-core Xeon. The family offers 144 to 288 efficiency cores per socket, without hyper-threading or AVX-512, and it is the first data center CPU made with Intel's 18A process. Getting one is a separate question: Intel says the chip is shipping, while also saying that it expects the industry to stay supply constrained throughout 2027 and into 2028. This guide covers which workloads fit, how it compares with P-core Xeon 6 and AMD EPYC, what the conflicting availability reports actually say, and whether to wait for Diamond Rapids. For the wider picture, see our Xeon shortage guide.

What is Intel Xeon 6+ Clearwater Forest?

Clearwater Forest launched on June 1, 2026 with six configurations across four models, according to Tom's Hardware:

• Xeon 6990E+: 288 cores, 576MB L3 cache, 450W, with a lower-clocked 330W configuration.
• Xeon 6980E+: 264 cores, 528MB L3 cache, 400W, with a lower-clocked 300W configuration.
• Xeon 6970E+: 192 cores, 480MB L3 cache, 400W.
• Xeon 6960E+: 144 cores, 432MB L3 cache, 330W.
• All models: one or two sockets, 12 channels of DDR5-8000, 96 PCIe 5.0 lanes (64 with CXL 2.0) and the LGA 7529 socket.

The flagship combines 12 compute tiles on Intel 18A with base tiles on Intel 3 and I/O tiles on Intel 7. An Intel spokesperson told Tom's Hardware the CPUs top out at AVX2, with no AVX-512 or AVX10. Reports differ on AMX: a March Tom's Hardware article listed it, but the June launch feature list does not, so confirm it on Intel's spec sheet if you depend on it.

Which workloads suit E-cores?

• Cloud-native services: ServeTheHome says Intel built the E-core line to keep these workloads on x86 rather than losing them to Arm (ServeTheHome).
• Telecom and network functions: Intel positions the chip for virtualized RAN and edge AI (Tom's Hardware), and ServeTheHome notes that telecom was a strong segment for Sierra Forest too.
• High-density consolidation: Intel claims up to a 9-to-1 consolidation ratio against Cascade Lake, reported by ServeTheHome. That is a vendor figure.
• CPU-dense agentic infrastructure: Intel CEO Lip-Bu Tan named this as the source of 2027 demand on the October 29, 2026 call (Bullfincher transcript).

The fit is weaker elsewhere. Software licensed per core, such as VMware or commercial databases, gets expensive at 288 cores, as our Xeon 6 vs EPYC guide explains. Code tuned for AVX-512 loses that path. Memory-heavy hosts also need a check: ServeTheHome found Intel's spec listing 1.5TB per socket for the 6990E+, which is 5.33GB per core.

How does Xeon 6+ compare with P-core Xeon 6?

The two share a platform but serve different jobs. ServeTheHome reported that partners say supporting the chips is usually just a BIOS update in existing Xeon 6900P systems, so ask your server maker to confirm support for your exact model. Clearwater Forest does not fit the smaller Xeon 6700 socket, so an existing Sierra Forest 6700E buyer moves to a new platform, consolidating sockets rather than swapping CPUs. P-core Xeon 6 keeps hyper-threading and the vector and matrix acceleration that E-cores lack. Intel said on its October 29, 2026 earnings call that Granite Rapids is now the largest family in its server portfolio (Bullfincher transcript), so it is the default for mixed enterprise work. ServeTheHome also cautions on the generational claim: Intel's 2.26x figure against the Xeon 6780E comes with twice the cores, which works out to roughly 13% per core.

How does Xeon 6+ compare with AMD EPYC?

Intel's comparison is with the 192-core EPYC 9965, and Intel claims 30% higher average performance per thread (Tom's Hardware). That number needs care. The EPYC chip runs 384 threads against Intel's 288, and Tom's Hardware points out that a per-thread lead does not usually become an overall lead, and that Intel gave no whole-chip figure. Intel also claims up to 30% better efficiency at 40% CPU utilization, a gap that narrows as load rises. We found no independent Xeon 6+ benchmarks as of November 6, 2026, so test your own workload before trusting either side.

AMD's next step is EPYC 9006 Venice, with the 256-core EPYC 9996 listed at $14,904 according to AMD's SKU list, which Tom's Hardware reported on September 29, 2026, close to the roughly $14,800 launch price of the EPYC 9965 (Tom's Hardware). TechRadar reported on July 27 that the 256-core part targets Q4 2026, with the full stack expected in 2027 (TechRadar). AMD said on November 3 that it is scaling Venice production in Q4 (AMD). ServeTheHome reported list prices on October 4, 2026 from just over $4,600 for the 144-core 6960E+ to just shy of $15,000 for the 288-core 6990E+, and cautions that Intel's server list prices are traditionally discounted. By our arithmetic that is about $52 per core for the 6990E+ and about $58 for the EPYC 9996, before discounts. See our Venice timing guide for the platform details.

Can you actually buy Xeon 6+, and when?

Sources conflict, largely because "launched", "shipping" and "orderable by a mid-size buyer" are different things. Here is what each said, in date order:

• March 3, 2026: Tom's Hardware reported that systems would be available later in the year.
• June 1, 2026: ServeTheHome said Intel was "finally shipping" the family and that it was here for many customers.
• Around the June launch: TweakTown said systems were available through ASUS, Dell, Ericsson, Gigabyte, HPE, Lenovo and Supermicro.
• June 2026: at a Computex roundtable, Intel's Kira Boyko said production was "ramping well" but that CPU allocation talks happen "daily, in some cases", and that constraints would not lighten in the immediate timeframe (Tom's Hardware).
• October 29, 2026: Tan said Clearwater Forest is "shipping for revenue" and that demand for 2027 is significant (Bullfincher transcript).

Our reading is that the chip is real and shipping, but large customers likely come first. Treat that as our inference, since Intel has not published allocation or volume figures. On the October 29 call, Tan named Intel 3 yields and cycle times, an industry-wide shortage of EMIB substrates, and a factory accident in Israel as limits on server output. CFO David Zinsner said he expects the industry to remain supply constrained throughout 2027 and into 2028, and that Intel stays "a bit constrained" in the first half of 2027 (Bullfincher transcript), and that much of a planned 40% substrate capacity increase arrives in the second half. Intel did not tie those limits to Xeon 6+ specifically, although the chip uses Intel 3 base tiles and EMIB. On 18A itself, Zinsner said yields are moving toward industry-standard levels, ahead of internal projections. Get a written lead time for the exact model before designing around it, and read our server lead times guide.

When will Diamond Rapids arrive, and should you wait?

Diamond Rapids, also called Xeon 7, is the next P-core Xeon. Tan said on October 29, 2026 that it is sampling and on track to ramp in 2027 (Bullfincher transcript), and Intel has given no firmer public date in the sources we reviewed. Intel detailed it at Hot Chips in August: up to 256 P-cores, 1.28GB of last-level cache, 16 memory channels and 128 lanes of PCIe 6.0 (Tom's Hardware). Hyper-threading is not expected to return until the following generation, Coral Rapids (Tom's Hardware). A ramp is also not the same as broad availability, so a mid-size buyer should not plan around Diamond Rapids for a project that must deploy in the first half of 2027.

How should you decide between Xeon 6+ and the alternatives?

• Choose Xeon 6+ if your software scales across many threads, is not licensed per core, does not need AVX-512, and you already run or can get Xeon 6900 systems.
• Choose P-core Xeon 6 for mixed enterprise work, per-core licensed software, and anything using AVX-512 or AMX.
• Choose EPYC 9005 if you want a mature platform today and the supply is better for your configuration. Ask for both quotes.
• Wait for Venice or Diamond Rapids only if the project can slip well into 2027 and you can absorb a new platform.
• Whichever you pick, budget memory first. Twelve channels of DDR5 at current prices can outweigh the CPU, as our server price guide explains.

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