CPU Comparison
Intel Xeon 658X Processor vs Intel Xeon 678X
A side-by-side comparison of specs, performance and value. The Intel Xeon 658X is a 24-core, 48-thread single-socket workstation processor based on the Granite Rapids-WS architecture, built on Intel 3 and targeting professional creators, engineers, and AI developers who need high memory capacity, wide PCIe 5.0 connectivity, and strong multi-threaded throughput in a single CPU.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Gaming
Virtualization
Efficiency
Specialized Performance
AI / ML
- AMX with FP16 and AVX‑512 accelerates matrix operations for small to medium models.
- Suitable for local inference, prototyping, and data preprocessing where GPUs are not available or not desired.
- Not a replacement for dedicated AI accelerators for large‑scale training.
- 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.
Content Creation
Gaming
- 24 P‑cores with up to 4.9 GHz boost provide strong single‑thread performance for game logic and physics.
- High PCIe lane count helps with multi‑GPU or storage‑heavy setups, but games rarely exploit this.
- Modern gaming‑focused CPUs often deliver similar or better game performance with lower power and cost.
- Best treated as a gaming side‑grade for professionals who already need this CPU for work.
- 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.
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- 24 high‑performance Redwood Cove P‑cores with SMT for strong multi‑threaded throughput.
- 8‑channel DDR5‑6400 with support for up to 4 TB RAM and RDIMMs/MRDIMMs.
- 128 PCIe 5.0 lanes plus CXL 2.0 for dense GPU and NVMe configurations.
- Large 144 MB L3 cache improves performance for memory‑bound professional applications.
- AMX with FP16 and AVX‑512 accelerates AI and math‑heavy workloads.
- Unlocked multiplier and X‑series tuning for overclocking on W890 motherboards.
Cons
- High 250 W base and up to 300 W turbo power draw, requiring robust cooling and PSU.
- Premium price compared to mainstream desktop CPUs with similar core counts.
- No integrated graphics; a discrete GPU is required for display output.
- Single‑socket only; no dual‑socket upgrade path like some server platforms.
- Overkill for gaming and light productivity; value is hard to realize without professional workloads.
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.
Competitors & Alternatives
Intel Xeon 658X Processor
- AMD Ryzen Threadripper PRO 7955WXRival
Workstation
- AMD Ryzen Threadripper 7980XRival
HEDT / Workstation
- AMD Ryzen Threadripper PRO 5975WXRival
Workstation
- Compare head-to-headIntel Xeon w7-3545Rival
Workstation
- Compare head-to-headIntel Xeon w9-3595XRival
Workstation
- Intel Xeon 676XAlt
Higher‑core (32C/64T) Xeon 600 SKU if your workloads scale well beyond 24 cores and you can afford the higher TDP and price.
- AMD Ryzen 9 9950XAlt
Mainstream high‑end desktop CPU with strong per‑core performance and lower platform cost, but fewer PCIe lanes and memory channels.
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.
Our Verdict on Each
A strong modern workstation CPU with excellent memory and I/O expansion, plus meaningful AI acceleration. Best suited for professionals who can exploit its 24 cores and 8 memory channels; overkill and costly for gaming or light workloads.
Best for: Building a new single‑socket workstation for engineering simulation, 3D rendering, scientific computing, or AI development where you need 24 cores, 8 memory channels, 128 PCIe 5.0 lanes, and AMX acceleration.
Read the full reviewA 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 reviewFrequently Asked Questions
Which is better, Intel Xeon 658X Processor or Intel Xeon 678X?
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 658X Processor or Intel Xeon 678X?
For gaming, the Intel Xeon 678X leads with a gaming performance score of 78/100 among Intel Xeon 658X Processor and Intel Xeon 678X.
Which uses less power?
The Intel Xeon 658X Processor has the lowest rated TDP. Power draw across these chips: Intel Xeon 658X Processor (250 W), Intel Xeon 678X (300 W).
Do Intel Xeon 658X Processor and Intel Xeon 678X use the same socket?
Yes — all of these CPUs use the FCLGA4710 socket, so they share compatible motherboards.
Which has more cores?
The Intel Xeon 678X has the most cores. Core counts: Intel Xeon 658X Processor (24 cores), Intel Xeon 678X (48 cores).
Which is faster in multi-core benchmarks?
The Intel Xeon 678X posts the highest multi-core benchmark score. Multi-core results: Intel Xeon 658X Processor (29,732), Intel Xeon 678X (97,699). Benchmark figures are approximate and workload-dependent.