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Intel Xeon Gold 5520+ vs Intel Xeon Platinum 8558: Comparison
Xeon Gold 5520+ vs Xeon Platinum 8558: the l3 cache difference
Start with l3 cache, because it is the widest measured gap between them: Xeon Gold 5520+ 160 MB against Xeon Platinum 8558 260 MB, 38% in favour of Xeon Platinum 8558. The benchmark result agrees. SPECrate® 2017 Integer (base), 1-chip puts Xeon Platinum 8558 38% ahead, 425 against 263. They differ on tdp too, 205 W on the Xeon Gold 5520+ versus 330 W on the Xeon Platinum 8558. Core count is not the same on both, 28 cores on the Xeon Gold 5520+ versus 48 cores on the Xeon Platinum 8558. There is a split on thread count as well, 56 threads on the Xeon Gold 5520+ versus 96 threads on the Xeon Platinum 8558. They differ on base clock too, 2.2 GHz on the Xeon Gold 5520+ versus 2.1 GHz on the Xeon Platinum 8558.
Who each one is for
Buy the Xeon Gold 5520+ for enterprise virtualization and demanding server workloads, though it is not built for desktop use and gaming builds. The Xeon Platinum 8558 suits multi-socket data centers and AI training infrastructure, though it is the wrong buy for single-socket small business servers and desktop use. Our rating of the Xeon Gold 5520+ (8.1/10): the Intel Xeon Gold 5520+ is a strong mid-to-high tier data center chip, well suited to enterprise virtualization and server duty. Our rating of the Xeon Platinum 8558 (8.6/10): the Intel Xeon Platinum 8558 is a top-tier data center chip, built for the heaviest multi-socket server and AI infrastructure workloads.
What Xeon Gold 5520+ and Xeon Platinum 8558 have in common
Where they agree, they agree completely, boost clock, release year, igpu, core architecture and socket included, so the decision does not turn on any of those.
Specs and benchmarks
Release Year
- Intel Xeon Gold 5520+
- 2023
- Intel Xeon Platinum 8558
- 2023
Core Count
- Intel Xeon Gold 5520+
- 28 cores
- Intel Xeon Platinum 8558
- 48 cores
iGPU
- Intel Xeon Gold 5520+
- None
- Intel Xeon Platinum 8558
- None
Thread Count
- Intel Xeon Gold 5520+
- 56 threads
- Intel Xeon Platinum 8558
- 96 threads
Core Architecture
- Intel Xeon Gold 5520+
- Emerald Rapids
- Intel Xeon Platinum 8558
- Emerald Rapids
Base Clock
- Intel Xeon Gold 5520+
- 2.2 GHz
- Intel Xeon Platinum 8558
- 2.1 GHz
Boost Clock
- Intel Xeon Gold 5520+
- 4.0 GHz
- Intel Xeon Platinum 8558
- 4.0 GHz
L3 Cache
- Intel Xeon Gold 5520+
- 160 MB-38%
- Intel Xeon Platinum 8558
- 260 MBBest
Socket
- Intel Xeon Gold 5520+
- LGA 4677
- Intel Xeon Platinum 8558
- LGA 4677
TDP
- Intel Xeon Gold 5520+
- 205 W
- Intel Xeon Platinum 8558
- 330 W
Benchmarks
- General CPU
SPECrate® 2017 Integer (base), 1-chip
- Intel Xeon Gold 5520+
- 263-38%
- Intel Xeon Platinum 8558
- 425Best
Best published 1-chip result on spec.org, retrieved 23 Sept 2026.
Server-style tasks like compiling and compression on every thread. Best for judging workstation and server work.
SPECrate® 2017 Floating Point (base), 1-chip
- Intel Xeon Gold 5520+
- 362-29%
- Intel Xeon Platinum 8558
- 512Best
Best published 1-chip result on spec.org, retrieved 23 Sept 2026.
Scientific and engineering tasks on every thread. Rewards core count and memory bandwidth.
SPEC®, SPECrate® and SPECspeed® are registered trademarks of the Standard Performance Evaluation Corporation. Copied by permission of the Standard Performance Evaluation Corporation (SPEC). Results retrieved from www.spec.org on 23 Sept 2026.
Which one should you pick?
Choose 5520+ if you already have it on hand or find it at a lower price.
Choose 8558 if you want the higher L3 cache (260 MB vs 160 MB), the higher SPECrate® 2017 integer (base), 1-chip (425 vs 263) and the higher SPECrate® 2017 floating point (base), 1-chip (512 vs 362).
Verdict
Intel Xeon Gold 5520+
8.1 / 10 Expert Rating
The Intel Xeon Gold 5520+ is a strong mid-to-high tier data center chip, well suited to enterprise virtualization and server duty.
Intel Xeon Platinum 8558
8.6 / 10 Expert Rating
The Intel Xeon Platinum 8558 is a top-tier data center chip, built for the heaviest multi-socket server and AI infrastructure workloads.