Core Ultra 9 275HX vs EPYC 4545P

CPU

GPU

Core Ultra 9 275HX

24 Cores24 Thrd55 WWMax: 5.4 GHz2025

Popular choices:

•••••••••

EPYC 4545P

16 Cores32 Thrd65 WWMax: 5.4 GHz2025

Popular choices:

•••••••••

Performance Spectrum - CPU

Core Ultra 9 275HX

24 / 24

56,018

+3.2%

54,255

0.0%

Ryzen Threadripper PRO 7965WX

Ryzen Threadripper PRO 5995WX

Ryzen Threadripper 9970X

About PassMark

PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Core Ultra 9 275HX

2025

Why buy it

✅Better for gaming: +10.3% higher average FPS across 2 shared CPU benchmark tests.
✅Draws 55W instead of 65W, a 10W reduction.

Trade-offs

❌Smaller total L3 cache (36 MB vs 64 MB).
❌Less compelling for workstation-style loads than EPYC 4545P, which brings 16 cores / 32 threads and 28 PCIe lanes.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

EPYC 4545P

2025

Why buy it

✅+77.8% larger total L3 cache (64 MB vs 36 MB).
✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads, plus 28 PCIe lanes vs 24.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core Ultra 9 275HX across 2 shared CPU benchmark tests.
❌Lower PassMark (54,255 vs 56,018).
❌Launch MSRP is still $549 MSRP, while Core Ultra 9 275HX mostly shows up through inconsistent older-market listings.
❌18.2% higher power demand at 65W vs 55W.

Core Ultra 9 275HX

2025

EPYC 4545P

2025

Why buy it

✅Better for gaming: +10.3% higher average FPS across 2 shared CPU benchmark tests.
✅Draws 55W instead of 65W, a 10W reduction.

Why buy it

✅+77.8% larger total L3 cache (64 MB vs 36 MB).
✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads, plus 28 PCIe lanes vs 24.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Smaller total L3 cache (36 MB vs 64 MB).
❌Less compelling for workstation-style loads than EPYC 4545P, which brings 16 cores / 32 threads and 28 PCIe lanes.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Trade-offs

❌Worse for gaming: lower average FPS than Core Ultra 9 275HX across 2 shared CPU benchmark tests.
❌Lower PassMark (54,255 vs 56,018).
❌Launch MSRP is still $549 MSRP, while Core Ultra 9 275HX mostly shows up through inconsistent older-market listings.
❌18.2% higher power demand at 65W vs 55W.

Quick Answers

So, is Core Ultra 9 275HX better than EPYC 4545P?

Not in a simple one-size-fits-all way. EPYC 4545P makes more sense for workstation-style multi-core throughput, while Core Ultra 9 275HX is the better mainstream desktop choice for gaming, platform cost, and day-to-day practicality.

Which one is better for gaming?

If gaming is the priority, Core Ultra 9 275HX is the better pick here. According to our tests, it delivers 10.3% more average FPS across 2 shared CPU game tests.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Core Ultra 9 275HX is the better fit. You are getting 3.2% better PassMark, backed by 24 cores and 24 threads.

Which one is the smarter buy today, not just the cheaper CPU?

Core Ultra 9 275HX is still the faster CPU overall, but EPYC 4545P makes more sense if price matters more than absolute performance. Core Ultra 9 275HX is at an unclear MSRP at unclear MSRP versus $549 MSRP, and it gives you a 10.3% average FPS lead across 2 shared CPU game tests in our data. EPYC 4545P is also 100.0% better value on MSRP (98.8 vs 0.0 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

Which one is more future-proof for 2026 and beyond?

EPYC 4545P is the more future-proof choice for 2026 and beyond. You are getting 77.8% larger total L3 cache (64 MB vs 36 MB) and AVX-512 support for heavier modern compute workloads. That makes it the safer long-term pick.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Core Ultra 9 275HX Benchmark Check

EPYC 4545P Benchmark Check

Path of Exile 2

Preset	Core Ultra 9 275HX	EPYC 4545P
1080p
low	309 FPS	286 FPS
medium	299 FPS	262 FPS
high	246 FPS	215 FPS
ultra	208 FPS	181 FPS
1440p
low	269 FPS	262 FPS
medium	228 FPS	218 FPS
high	175 FPS	167 FPS
ultra	154 FPS	148 FPS
4K
low	179 FPS	182 FPS
medium	151 FPS	151 FPS
high	112 FPS	115 FPS
ultra	101 FPS	102 FPS

Open Core Ultra 9 275HX Open EPYC 4545P

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core Ultra 9 275HX	EPYC 4545P
1080p
low	802 FPS	674 FPS
medium	700 FPS	580 FPS
high	565 FPS	434 FPS
ultra	495 FPS	375 FPS
1440p
low	682 FPS	567 FPS
medium	614 FPS	506 FPS
high	505 FPS	392 FPS
ultra	408 FPS	312 FPS
4K
low	382 FPS	320 FPS
medium	349 FPS	289 FPS
high	326 FPS	255 FPS
ultra	283 FPS	219 FPS

Open Core Ultra 9 275HX Open EPYC 4545P

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core Ultra 9 275HX	EPYC 4545P
1080p
low	866 FPS	850 FPS
medium	708 FPS	679 FPS
high	628 FPS	601 FPS
ultra	537 FPS	515 FPS
1440p
low	744 FPS	679 FPS
medium	611 FPS	543 FPS
high	529 FPS	469 FPS
ultra	453 FPS	398 FPS
4K
low	527 FPS	484 FPS
medium	446 FPS	401 FPS
high	403 FPS	360 FPS
ultra	344 FPS	302 FPS

Open Core Ultra 9 275HX Open EPYC 4545P

League of Legends

League of Legends

Valorant

Preset	Core Ultra 9 275HX	EPYC 4545P
1080p
low	1078 FPS	1072 FPS
medium	959 FPS	966 FPS
high	841 FPS	843 FPS
ultra	757 FPS	760 FPS
1440p
low	862 FPS	842 FPS
medium	756 FPS	747 FPS
high	660 FPS	652 FPS
ultra	585 FPS	566 FPS
4K
low	635 FPS	619 FPS
medium	565 FPS	553 FPS
high	500 FPS	487 FPS
ultra	437 FPS	421 FPS

Open Core Ultra 9 275HX Open EPYC 4545P

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core Ultra 9 275HX and EPYC 4545P

Core Ultra 9 275HX

The Core Ultra 9 275HX is manufactured by Intel. It was released in 2025-01-01. It is based on the Arrow Lake-HX (2025) architecture. It features 24 cores and 24 threads. Base frequency is 2.7 GHz, with boost up to 5.4 GHz. L3 cache: 36 MB (total). L2 cache: 3 MB (per core). Built on 3 nm process technology. Socket: FCBGA2114. Thermal design power (TDP): 55 Watt. Memory support: DDR5-6400. Passmark benchmark score: 56,018 points. Launch price was $600.

EPYC 4545P

The EPYC 4545P is manufactured by AMD. It was released in 13 May 2025 (less than a year ago). It is based on the Grado (2025) architecture. It features 16 cores and 32 threads. Base frequency is 3 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 65 Watt. Memory support: DDR5. Passmark benchmark score: 54,255 points. Launch price was $549.

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Processing Power

The Core Ultra 9 275HX packs 24 cores / 24 threads, while the EPYC 4545P offers 16 cores / 32 threads — the Core Ultra 9 275HX has 8 more cores. Boost clocks reach 5.4 GHz on the Core Ultra 9 275HX versus 5.4 GHz on the EPYC 4545P — identical boost frequencies (base: 2.7 GHz vs 3 GHz). The Core Ultra 9 275HX uses the Arrow Lake-HX (2025) architecture (3 nm), while the EPYC 4545P uses Grado (2025) (4 nm). In PassMark, the Core Ultra 9 275HX scores 56,018 against the EPYC 4545P's 54,255 — a 3.2% lead for the Core Ultra 9 275HX. L3 cache: 36 MB (total) on the Core Ultra 9 275HX vs 64 MB (total) on the EPYC 4545P.

Feature	Core Ultra 9 275HX	EPYC 4545P
Cores / Threads	24 / 24+50%	16 / 32
Boost Clock	5.4 GHz	5.4 GHz
Base Clock	2.7 GHz	3 GHz+11%
L3 Cache	36 MB (total)	64 MB (total)+78%
L2 Cache	3 MB (per core)+200%	1 MB (per core)
Process	3 nm-25%	4 nm
Architecture	Arrow Lake-HX (2025)	Grado (2025)
PassMark	56,018+3%	54,255
Geekbench 6 Single	2,835	—
Geekbench 6 Multi	17,908	—

🧠

Memory & Platform

The Core Ultra 9 275HX uses the FCBGA2114 socket (PCIe 5.0), while the EPYC 4545P uses AM5 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-6400 on the Core Ultra 9 275HX versus 5600 on the EPYC 4545P — the EPYC 4545P supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core Ultra 9 275HX supports up to 256 GB of RAM compared to 192 — 28.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 24 (Core Ultra 9 275HX) vs 28 (EPYC 4545P) — the EPYC 4545P offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM870,WM880 (Core Ultra 9 275HX) and AM5 (EPYC 4545P).

Feature	Core Ultra 9 275HX	EPYC 4545P
Socket	FCBGA2114	AM5
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-6400	5600+111900%
Max RAM Capacity	256 GB+139810033%	192
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	24	28+17%

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the EPYC 4545P supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core Ultra 9 275HX) vs VT-x, VT-d, AMD-V (EPYC 4545P). Both include integrated graphics — Intel Arc Graphics (Core Ultra 9 275HX) and AMD Radeon Graphics (EPYC 4545P) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core Ultra 9 275HX targets High-End Gaming Laptop. Direct competitor: Core Ultra 9 275HX rivals Ryzen 9 9955HX; EPYC 4545P rivals Ryzen 9 7900X.

Feature	Core Ultra 9 275HX	EPYC 4545P
Integrated GPU	Yes	Yes
IGPU Model	Intel Arc Graphics	AMD Radeon Graphics
Unlocked	Yes	Yes
AVX-512	No	Yes
Virtualization	VT-x, VT-d	VT-x, VT-d, AMD-V
Target Use	High-End Gaming Laptop	—