CPU Comparison
Intel Xeon 678X vs Intel Xeon w7-3555
A side-by-side comparison of specs, performance and value. The Intel Xeon 678X is a 48-core, 96-thread Granite Rapids-WS workstation processor built on Intel’s Intel 3 process, featuring eight-channel DDR5/MRDIMM support, 128 PCIe 5.0 lanes, and 192 MB of L3 cache for heavy multi-GPU and memory-bound professional workloads.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Gaming
Virtualization
Efficiency
Specialized Performance
AI / ML
- Intel AMX (FP16/BF16/INT8) significantly accelerates CPU-based AI inference compared to previous Xeon generations.
- Still slower than a dedicated GPU or accelerator for large-scale training.
- Well suited for local AI workflows, model prototyping, and batch inference where CPU flexibility matters.
- AMX and AVX‑512 provide strong CPU‑side matrix and inference acceleration.
- No dedicated NPU; AI workloads rely on CPU + GPU combination.
- Excellent for AI development and small‑scale training where multi‑GPU and large memory matter more than pure CPU TOPS.
Content Creation
Gaming
- Strong single-core clocks up to 4.9 GHz support high FPS in CPU-heavy titles.
- Gaming is not the primary design goal; some titles barely scale beyond 16–24 cores.
- Modern high-end desktop CPUs often deliver similar or better gaming performance with much lower power consumption.
- Strong single‑core turbo up to 4.8 GHz benefits high‑FPS gaming.
- Lack of hybrid E‑cores avoids scheduling oddities compared to client CPUs.
- Cost and power make it hard to recommend over gaming‑focused desktop CPUs.
- Best paired with high‑end GPU for GPU‑bound titles where CPU overhead matters.
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- 48 high-performance Redwood Cove P-cores with HT for demanding multi-threaded workloads.
- Eight-channel DDR5/MRDIMM support provides exceptional memory bandwidth and capacity.
- 128 PCIe 5.0 lanes enable complex GPU and storage configurations without lane bottlenecks.
- Intel 3 process and chiplet architecture deliver strong performance and scalability.
- Full X-series overclocking support via Intel’s OC Mailbox toolkit.
- AMX and AVX-512 accelerate AI and HPC workloads on the CPU.
Cons
- High 300 W base / 360 W turbo power draw requires robust cooling and PSU.
- Very high platform cost; CPU and W890 motherboards are expensive.
- Gaming performance is good but not class-leading; cheaper desktop CPUs are often faster in games.
- Overkill for light or lightly threaded workloads; core count goes unused.
- Single-socket-only design may limit future upgrade paths for some users.
Pros
- 28 P‑cores with 56 threads for heavy multi‑threaded workloads
- 112 PCIe 5.0 lanes for multi‑GPU and NVMe expansion
- 8‑channel DDR5‑4800 with ECC and up to 4 TB capacity
- Strong AVX‑512 and AMX acceleration for AI and HPC
- Robust RAS and vPro enterprise features
- Single‑socket simplicity with workstation‑class I/O
Cons
- Very high power draw (325 W base, 390 W turbo)
- Locked multiplier limits easy overclocking
- Expensive CPU and platform compared to consumer alternatives
- No integrated graphics requires discrete GPU
- Large LGA4677 socket and cooling requirements restrict case and cooler choices
Competitors & Alternatives
Intel Xeon 678X
- AMD Ryzen Threadripper PRO 7995WXRival
Workstation
- AMD EPYC 9654Rival
Server / Workstation
- Intel Xeon w9-3495XRival
Workstation
- Intel Xeon 698XRival
Workstation
- Intel Xeon 696XRival
Workstation
- Intel Xeon 676XAlt
Lower core count (32) with similar platform features at a lower price if you don’t need 48 cores.
- Intel Xeon 658XAlt
24-core Xeon 600 part with the same platform but lower cost and power if you don’t need 48 cores.
Intel Xeon w7-3555
- AMD Ryzen Threadripper PRO 7965WXRival
Workstation
- AMD Ryzen Threadripper PRO 5975WXRival
Workstation
- AMD EPYC 9254Rival
Server / Workstation
- Compare head-to-headIntel Xeon w7-3565XRival
Workstation
- Intel Xeon w9-3475XRival
Workstation
Lower‑cost alternative with slightly fewer cores if 28 are not strictly necessary.
Compare head-to-head
Our Verdict on Each
A powerful single-socket workstation CPU with excellent multi-threaded throughput, massive memory and I/O bandwidth, and strong AI acceleration, though power-hungry and overkill for gaming or light tasks.
Best for: Professional workstation users who need 40+ cores, eight memory channels, and 128 PCIe 5.0 lanes in a single socket for simulation, rendering, or AI, and who can fully utilize the CPU and justify its cost and power draw.
Read the full reviewA heavyweight workstation CPU with excellent multi-threaded throughput and massive I/O, best suited for users who actually need 28 cores and 112 PCIe 5.0 lanes, not for mainstream gaming or office builds.
Best for: Building a single‑socket workstation that must support multiple high‑end GPUs, large DDR5 ECC memory, and many PCIe 5.0 devices for rendering, simulation, or AI development.
Read the full reviewFrequently Asked Questions
Which is better, Intel Xeon 678X or Intel Xeon w7-3555?
Based on our editorial ratings, the Intel Xeon 678X comes out ahead with a score of 8.9/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.
Which is faster for gaming, Intel Xeon 678X or Intel Xeon w7-3555?
For gaming, the Intel Xeon 678X leads with a gaming performance score of 78/100 among Intel Xeon 678X and Intel Xeon w7-3555.
Which uses less power?
The Intel Xeon 678X has the lowest rated TDP. Power draw across these chips: Intel Xeon 678X (300 W), Intel Xeon w7-3555 (325 W).
Do Intel Xeon 678X and Intel Xeon w7-3555 use the same socket?
No. They use different sockets (Intel Xeon 678X: FCLGA4710, Intel Xeon w7-3555: FCLGA4677), so each needs a compatible motherboard.
Which has more cores?
The Intel Xeon 678X has the most cores. Core counts: Intel Xeon 678X (48 cores), Intel Xeon w7-3555 (28 cores).
Which is faster in multi-core benchmarks?
The Intel Xeon 678X posts the highest multi-core benchmark score. Multi-core results: Intel Xeon 678X (97,699), Intel Xeon w7-3555 (17,120). Benchmark figures are approximate and workload-dependent.