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Intel Core Ultra 5 345K — Panther Lake · 14C · 5.5 GHz
Intel

Intel Core Ultra 5 345K

Panther Lake · 14C · 5.5 GHz

84
/ 100
From $329
VS
Xeon W9-3475X wins by 6
Xeon W9-3475X — Sapphire Rapids · 36C/72T · LGA4677
Intel

Xeon W9-3475X

Sapphire Rapids · 36C/72T · LGA4677

90
/ 100
From $3,739
Specdex verdict

Xeon W9-3475X takes it — here’s why.

In our weighted Specdex score, Intel Core Ultra 5 345K lands at 84 and Xeon W9-3475X at 90. That puts Xeon W9-3475X ahead by 6 points — a decisive margin driven mostly by its strengths in the categories below.

Pick Intel Core Ultra 5 345K if…

  • ✓Latest generation silicon
  • ✓Improved perf-per-watt
  • ✓Full modern feature set

Pick Xeon W9-3475X if…

  • ✓Massive core counts
  • ✓ECC memory support
  • ✓Workstation/server-grade platform
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

Gaming

Intel Core Ultra 5 345K

Frame-rate-bound workloads — favours cache and single-thread speed

Intel Core Ultra 5 345K leads on gaming (85 vs 70).

Creators & productivity

Xeon W9-3475X

Rendering, compilation, heavy multitasking — favours core count

Xeon W9-3475X leads on multi (90 vs 84).

Power efficiency

Intel Core Ultra 5 345K

Performance per watt — thermals, PSU headroom, electricity cost

Intel Core Ultra 5 345K leads on efficiency (86 vs 78).

Value for money

Intel Core Ultra 5 345K

Specdex score per dollar at MSRP

Intel Core Ultra 5 345K more score per dollar ($329 vs $3,739).

Intel Core Ultra 5 345K 84
vs
90 Xeon W9-3475X

Score breakdown

Intel Core Ultra 5 345K
84
single 86
multi 84
gaming 85
efficiency 86
Xeon W9-3475X
90
single 82
multi 90
gaming 70
efficiency 78

Specs side-by-side

Intel Core Ultra 5 345K versus Xeon W9-3475X — full spec comparison
Spec Intel Core Ultra 5 345K Xeon W9-3475X
Architecture
Panther Lake
Sapphire Rapids
Cores
14
▲ 36
Socket
LGA1851
LGA4677
Release year
2025
2023
Threads
—
72

Intel Core Ultra 5 345K

Pros
  • +Latest generation silicon
  • +Improved perf-per-watt
  • +Full modern feature set
Cons
  • −Premium pricing
  • −Requires up-to-date platform
  • −Initial stock scarcity likely

Xeon W9-3475X

Pros
  • +Massive core counts
  • +ECC memory support
  • +Workstation/server-grade platform
Cons
  • −Niche platform, limited motherboards
  • −High TDP requires serious cooling
  • −Premium price

FAQ: Intel Core Ultra 5 345K vs Xeon W9-3475X

Which is better, Intel Core Ultra 5 345K or Xeon W9-3475X? +

Xeon W9-3475X scores 90 on our weighted rubric — ahead by 6. Your best pick depends on the sub-scores above.

Is Intel Core Ultra 5 345K worth the price? +

At $329, Intel Core Ultra 5 345K delivers a Specdex score of 84 — strongest in single.

Is Xeon W9-3475X worth the price? +

At $3,739, Xeon W9-3475X delivers a Specdex score of 90 — strongest in multi.

Does Intel Core Ultra 5 345K or Xeon W9-3475X last longer? +

Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.

Which is better for gaming, Intel Core Ultra 5 345K or Xeon W9-3475X? +

Intel Core Ultra 5 345K — leads on gaming (85 vs 70). Frame-rate-bound workloads — favours cache and single-thread speed.

Which is better for creator and productivity work, Intel Core Ultra 5 345K or Xeon W9-3475X? +

Xeon W9-3475X — leads on multi (90 vs 84). Rendering, compilation, heavy multitasking — favours core count.