Xeon 6 6700P Buying Guide: 6767P vs 6776P vs 6760P (2026)

The Intel Xeon 6 6700P family is the P-core tier of Granite Rapids, and it is the first Intel server line where memory technology, not core count, is the hardest part of the specification. Three 64-core parts carry almost identical core counts, yet they do not accept the same memory, do not draw the same power, and one of them exists mainly because a GPU vendor asked for it.

That makes the 6700P family an unusually good test of a supplier. This guide covers what separates them, how to read a 6700P quotation, and where the specification errors hide. Intel recommended customer prices below are list reference values from Intel ARK, not transaction prices and not a market range.

The Three 64-Core Parts, Side by Side

All three are 64-core, 128-thread Granite Rapids parts built on Intel 3, all socketed in FCLGA4710, and all expose 8 memory channels and 88 PCIe 5.0 lanes. The differences are concentrated in four places: clock, cache, power, and memory support.

Read the table again and notice what it does not say. There is no cache or clock gap between the 6767P and the 6776P that any buyer would pay $314 for: the 6776P runs 0.1 GHz lower at base, matches boost, and matches cache. Its reason to exist is elsewhere, covered in the 6776P companion-part note.

Spec sheets for each part are on our model pages: Xeon 6767P, Xeon 6776P and Xeon 6760P.

The real commercial gap is between the 6760P and the two 350W parts. The 6760P gives up 0.2 GHz at base, 0.1 GHz at boost, 16 MB of L3, and MRDIMM support, and Intel lists it roughly 19 percent below the 6767P. Whether that discount is real for you depends entirely on one question: do your workloads need MRDIMM bandwidth?

MRDIMM-8800 versus DDR5-6400: the Actual Difference

Both 350W parts support two memory types. The 6760P supports only one.

With 8 channels, DDR5-6400 delivers 8 x 6400 MT/s, or roughly 409.6 GB/s of peak theoretical bandwidth per socket. MRDIMM-8800 delivers roughly 563.2 GB/s on the same channel count. Those two figures are arithmetic on the official memory speeds, not Intel-published bandwidth numbers, but the gap they express is the whole point: MRDIMM buys about 37 percent more peak bandwidth without adding channels or DIMMs.

That matters when the workload is bandwidth-per-core bound. A 64-core socket fed by DDR5-6400 has roughly 6.4 GB/s of peak bandwidth per core; the same socket on MRDIMM-8800 has roughly 8.8 GB/s. In-memory databases, large-scale CFD and weather models, dense virtualization hosts, and AI inference hosts that feed accelerators over the memory bus all sit in that category. For them, the 6760P's memory limitation is not a discount, it is a ceiling.

It does not matter when the workload is compute-bound and cache-friendly. Web tiers, container platforms and most storage front-ends will never see the difference.

Decision rule: if your sizing exercise shows memory bandwidth as the top-two constraint, the 6760P is the wrong part regardless of the price gap. If it is not, the 6760P is the value pick of the family.

One more point buyers miss. MRDIMM is a different module type, not a faster DDR5 RDIMM. A quotation that says "MRDIMM-8800" and then prices ordinary DDR5 modules is not a compatible quotation. Ask separately for the module type and for the validated operating speed at the population you intend to run, because populated speed is a platform-level outcome, not a per-module guarantee.

The 350W / 330W Split and Dense Racks

The 20 W difference between the 6767P and the 6760P looks trivial. It stops looking trivial when you multiply it.

A 2P node moves from 660 W of processor TDP to 700 W, a 40 W step, before you account for VRM losses and the fan power needed to move that heat out of the chassis. Push that across a 40-node row and the delta is 1.6 kW of extra thermal load. In an air-cooled 2U with a pair of 350 W sockets, the design margin is thin; some platforms will fold memory speed to stay inside thermal limits.

This cuts both ways: if your chassis and PSU were specified for 270 W or 300 W class processors, neither the 350 W parts nor, in many cases, the 330 W part is a drop-in. Check the platform's processor support list, not just the socket.

FCLGA4710: the Socket Check That Exposes a Weak Supplier

Granite Rapids P-core processors use FCLGA4710. The previous 4th and 5th Gen Xeon Scalable generations (Sapphire Rapids and Emerald Rapids) use LGA4677. These are different sockets, different heatsink retention, different VRM design, different boards.

Now the practical test. Ask a supplier quoting a 6700P part which socket it is for. If the reply, the quotation sheet, or the product page says "LGA4677", one of three things is true: the supplier is quoting the wrong generation of processor, the supplier is quoting a 5th Gen part under a 6th Gen name, or the supplier is copying text without understanding it. All three are disqualifying at this price point.

For a buyer assembling a bill of materials, the socket is the cheapest thing to verify and it validates the whole quotation. Verify it in writing on every 6700P line item, and cross-check it against the platform vendor's processor support list. A 6700P quotation should also state the confirmed memory type, the DIMM population it was validated at, and whether the part is OEM-channel or tray. A quotation that lists only a model number and a price is not a specification.

What to Verify Before You Order

Socket and platform, in writing. FCLGA4710 on the quotation, and a platform support list that names your exact SKU.

Memory type, spelled out. MRDIMM-8800 support is a differentiator between the 6767P and the 6760P. Confirm which one the quote assumes, and confirm the module type separately.

Thermal and power budget. Confirm the chassis supports the 330 W or 350 W part, at the population and memory speed you plan.

Package type. OEM and tray parts, boxed parts, and engineering or qualification samples carry different support outcomes. Ask which one you are being quoted.

Warranty in writing. Every processor HKCHL ships carries a one-year warranty. Get it on the quotation, not in a chat message.

Reference prices are not transaction prices. Intel recommended customer price is a list reference published by Intel. It is useful for sanity-checking a quotation and for comparing two SKUs from the same family. It is not what a distributor pays and not what the market clears at.

For how the current memory market is bending CPU decisions — including why a quote can expire the same week — see our server CPU buying note under memory inflation, and for the broader family view start from the Intel CPU category.

Frequently Asked Questions

6767P versus 6776P: what actually differs?

Clock, price and purpose, and almost nothing else. The 6767P runs 2.4 GHz base and 3.9 GHz boost with 336 MB L3 at 350 W; the 6776P runs 2.3 GHz base and 3.9 GHz boost with 336 MB L3 at 350 W, on the same FCLGA4710 socket with the same 8 channels, 88 PCIe 5.0 lanes and MRDIMM-8800 support. Intel lists them at $10,746 and $11,060. The 6776P's differentiation is its designation as the companion processor for the NVIDIA DGX B300, not a specification advantage.

Is the 6760P a weaker processor than the 6767P?

It is a differently positioned one. The 6760P gives up 0.2 GHz base clock, 0.1 GHz boost, 16 MB of L3 cache, 20 W of TDP headroom and the entire MRDIMM-8800 path, in exchange for an Intel recommended customer price of $8,739 against $10,746. If your workload is bandwidth-bound, those deltas are real losses. If it is not, the 6760P is the same 64 cores on the same socket for about 19 percent less list.

How much more bandwidth does MRDIMM-8800 give me over DDR5-6400?

On 8 channels, DDR5-6400 works out to roughly 409.6 GB/s peak per socket and MRDIMM-8800 to roughly 563.2 GB/s, about 37 percent more, with no change in channel count or slot occupancy. Per core on a 64-core part that is roughly 6.4 GB/s against roughly 8.8 GB/s. Both are arithmetic on Intel's published memory speeds, not Intel-published bandwidth ratings.

Why does the socket matter so much on a 6700P quote?

Because the 6700P family is FCLGA4710 and the previous two Xeon Scalable generations are LGA4677, and the two are not interchangeable. A quotation that lists LGA4677 for a 6767P, 6776P or 6760P is either the wrong generation of part, a mislabelled part, or copied text. It is a one-line check that tells you whether the rest of the quotation is worth reading.

Does a higher TDP part cost more to run?

It changes what the platform has to deliver. The 6767P and 6776P are 350 W parts and the 6760P is 330 W; in a 2P node that is 700 W against 660 W of processor TDP, plus VRM and fan overhead. We do not publish operating-cost estimates, because they depend on your load profile, power price and cooling design. Treat the TDP difference as a facility and chassis constraint first.

Our Verdict for 2026

Specify memory first, then the processor. If your workload genuinely consumes MRDIMM-class bandwidth, the 6767P is the rational default and the 6760P is off the table. If it does not, the 6760P buys the same 64 cores on the same socket for materially less list price, and the 6776P is only the right answer when a specific OEM platform requires it. Then verify three things in writing: FCLGA4710, the memory type, and the warranty. Those three lines separate a real 6700P quote from a copied one.

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