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 285K

2024

Why buy it

✅Better for gaming: +15.0% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $2,160 less on MSRP ($589 MSRP vs $2,749 MSRP).
✅Delivers 364.8% more PassMark for each dollar spent, at 114.6 vs 24.6 PassMark/$ ($589 MSRP vs $2,749 MSRP).
✅Draws 125W instead of 325W, a 200W reduction.
✅Integrated graphics onboard with Intel Arc Graphics 64EU, while Xeon w7-3555 needs a discrete GPU.

Trade-offs

❌Smaller total L3 cache (36 MB vs 75 MB).
❌Less compelling for workstation-style loads than Xeon w7-3555, which brings 28 cores / 56 threads and 112 PCIe lanes.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Xeon w7-3555

2024

Why buy it

✅+108.3% larger total L3 cache (75 MB vs 36 MB).
✅Better for workstations and heavier parallel workloads: 28 cores / 56 threads, plus 112 PCIe lanes vs 24.
✅366.7% more PCIe lanes (112 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core Ultra 9 285K across 50 shared CPU benchmark tests.
❌Lower Geekbench multi-core (17,120 vs 22,563).
❌Lower PassMark per dollar, at 24.6 vs 114.6 PassMark/$ ($2,749 MSRP vs $589 MSRP).
❌160% higher power demand at 325W vs 125W.
❌No integrated graphics, while Core Ultra 9 285K can still boot and troubleshoot without a discrete GPU.

Core Ultra 9 285K

2024

Xeon w7-3555

2024

Why buy it

✅Better for gaming: +15.0% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $2,160 less on MSRP ($589 MSRP vs $2,749 MSRP).
✅Delivers 364.8% more PassMark for each dollar spent, at 114.6 vs 24.6 PassMark/$ ($589 MSRP vs $2,749 MSRP).
✅Draws 125W instead of 325W, a 200W reduction.
✅Integrated graphics onboard with Intel Arc Graphics 64EU, while Xeon w7-3555 needs a discrete GPU.

Why buy it

✅+108.3% larger total L3 cache (75 MB vs 36 MB).
✅Better for workstations and heavier parallel workloads: 28 cores / 56 threads, plus 112 PCIe lanes vs 24.
✅366.7% more PCIe lanes (112 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Smaller total L3 cache (36 MB vs 75 MB).
❌Less compelling for workstation-style loads than Xeon w7-3555, which brings 28 cores / 56 threads and 112 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 285K across 50 shared CPU benchmark tests.
❌Lower Geekbench multi-core (17,120 vs 22,563).
❌Lower PassMark per dollar, at 24.6 vs 114.6 PassMark/$ ($2,749 MSRP vs $589 MSRP).
❌160% higher power demand at 325W vs 125W.
❌No integrated graphics, while Core Ultra 9 285K can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core Ultra 9 285K better than Xeon w7-3555?

Not in a simple one-size-fits-all way. Xeon w7-3555 makes more sense for workstation-style multi-core throughput, while Core Ultra 9 285K 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 285K is the better pick here. According to our tests, it delivers 15.0% more average FPS across 50 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 285K is the better fit. You are getting 31.8% better Geekbench multi-core, backed by 24 cores and 24 threads.

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

Core Ultra 9 285K is the smarter buy today. Core Ultra 9 285K is $2,160 cheaper on MSRP at $589 MSRP versus $2,749 MSRP, and it gives you a 15.0% average FPS lead across 50 shared CPU game tests in our data. It is also 364.8% better value on MSRP (114.6 vs 24.6 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.

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

Xeon w7-3555 is the more future-proof choice for 2026 and beyond. You are getting 108.3% larger total L3 cache (75 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 285K Benchmark Check

Xeon w7-3555 Benchmark Check

Path of Exile 2

Preset	Core Ultra 9 285K	Xeon w7-3555
1080p
low	341 FPS	311 FPS
medium	323 FPS	301 FPS
high	267 FPS	242 FPS
ultra	226 FPS	204 FPS
1440p
low	288 FPS	270 FPS
medium	239 FPS	233 FPS
high	184 FPS	175 FPS
ultra	162 FPS	154 FPS
4K
low	188 FPS	184 FPS
medium	155 FPS	157 FPS
high	115 FPS	118 FPS
ultra	103 FPS	106 FPS

Open Core Ultra 9 285K Open Xeon w7-3555

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core Ultra 9 285K	Xeon w7-3555
1080p
low	899 FPS	682 FPS
medium	778 FPS	593 FPS
high	623 FPS	482 FPS
ultra	544 FPS	427 FPS
1440p
low	756 FPS	551 FPS
medium	677 FPS	489 FPS
high	557 FPS	415 FPS
ultra	447 FPS	341 FPS
4K
low	421 FPS	324 FPS
medium	383 FPS	288 FPS
high	358 FPS	267 FPS
ultra	310 FPS	234 FPS

Open Core Ultra 9 285K Open Xeon w7-3555

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core Ultra 9 285K	Xeon w7-3555
1080p
low	879 FPS	1025 FPS
medium	718 FPS	1057 FPS
high	637 FPS	974 FPS
ultra	545 FPS	834 FPS
1440p
low	750 FPS	1001 FPS
medium	616 FPS	888 FPS
high	534 FPS	802 FPS
ultra	458 FPS	656 FPS
4K
low	534 FPS	600 FPS
medium	459 FPS	517 FPS
high	415 FPS	461 FPS
ultra	352 FPS	397 FPS

Open Core Ultra 9 285K Open Xeon w7-3555

League of Legends

League of Legends

Valorant

Preset	Core Ultra 9 285K	Xeon w7-3555
1080p
low	1202 FPS	1212 FPS
medium	1015 FPS	1015 FPS
high	939 FPS	925 FPS
ultra	846 FPS	809 FPS
1440p
low	930 FPS	980 FPS
medium	811 FPS	845 FPS
high	713 FPS	736 FPS
ultra	633 FPS	635 FPS
4K
low	685 FPS	727 FPS
medium	606 FPS	632 FPS
high	539 FPS	557 FPS
ultra	437 FPS	437 FPS

Open Core Ultra 9 285K Open Xeon w7-3555

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core Ultra 9 285K and Xeon w7-3555

Core Ultra 9 285K

The Core Ultra 9 285K is manufactured by Intel. It was released in 24 October 2024 (1 year ago). It is based on the Arrow Lake-S (2024−2025) architecture. It features 24 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 5.6 GHz. L3 cache: 36 MB (total). L2 cache: 3 MB (per core). Built on 3 nm process technology. Socket: LGA1851. Thermal design power (TDP): 125 Watt. Memory support: DDR5-6400. Passmark benchmark score: 67,482 points. Launch price was $589.

Xeon w7-3555

The Xeon w7-3555 is manufactured by Intel. It was released in 24 August 2024 (1 year ago). It is based on the Sapphire Rapids (2023−2024) architecture. It features 28 cores and 56 threads. Base frequency is 2.7 GHz, with boost up to 4.8 GHz. L3 cache: 75 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 325 Watt. Memory support: DDR5-4800. Passmark benchmark score: 67,754 points. Launch price was $2,339.

⚡

Processing Power

The Core Ultra 9 285K packs 24 cores / 24 threads, while the Xeon w7-3555 offers 28 cores / 56 threads — the Xeon w7-3555 has 4 more cores. Boost clocks reach 5.6 GHz on the Core Ultra 9 285K versus 4.8 GHz on the Xeon w7-3555 — a 15.4% clock advantage for the Core Ultra 9 285K (base: 3.7 GHz vs 2.7 GHz). The Core Ultra 9 285K uses the Arrow Lake-S (2024−2025) architecture (3 nm), while the Xeon w7-3555 uses Sapphire Rapids (2023−2024) (Intel 7 nm). In PassMark, the Core Ultra 9 285K scores 67,482 against the Xeon w7-3555's 67,754 — a 0.4% lead for the Xeon w7-3555. Geekbench 6 single-core — the metric most relevant to gaming — records 3,200 vs 2,300, a 32.7% lead for the Core Ultra 9 285K that directly translates to higher frame rates. Multi-core Geekbench: 22,563 vs 17,120 (27.4% advantage for the Core Ultra 9 285K). L3 cache: 36 MB (total) on the Core Ultra 9 285K vs 75 MB on the Xeon w7-3555.

Feature	Core Ultra 9 285K	Xeon w7-3555
Cores / Threads	24 / 24	28 / 56+17%
Boost Clock	5.6 GHz+17%	4.8 GHz
Base Clock	3.7 GHz+37%	2.7 GHz
L3 Cache	36 MB (total)	75 MB+108%
L2 Cache	3 MB (per core)+50%	2 MB (per core)
Process	3 nm-57%	Intel 7 nm
Architecture	Arrow Lake-S (2024−2025)	Sapphire Rapids (2023−2024)
PassMark	67,482	67,754
Cinebench R23 Multi	45,563	—
Geekbench 6 Single	3,200+39%	2,300
Geekbench 6 Multi	22,563+32%	17,120

🧠

Memory & Platform

The Core Ultra 9 285K uses the LGA1851 socket (PCIe 5.0), while the Xeon w7-3555 uses LGA4677 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-6400 memory speed. The Xeon w7-3555 supports up to 4096 GB of RAM compared to 192 GB — 182.1% more capacity for professional workloads. Memory channels: 2 (Core Ultra 9 285K) vs 8 (Xeon w7-3555). PCIe lanes: 24 (Core Ultra 9 285K) vs 112 (Xeon w7-3555) — the Xeon w7-3555 offers 88 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Z890 (Core Ultra 9 285K) and W790 (Xeon w7-3555).

Feature	Core Ultra 9 285K	Xeon w7-3555
Socket	LGA1851	LGA4677
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-6400	DDR5-4800
Max RAM Capacity	192 GB	4096 GB+2033%
RAM Channels	2	8+300%
ECC Support	Yes	Yes
PCIe Lanes	24	112+367%

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Xeon w7-3555 supports AVX-512 instructions — important for machine learning and scientific applications. Both support true virtualization. The Core Ultra 9 285K includes integrated graphics (Intel Arc Graphics 64EU), while the Xeon w7-3555 requires a dedicated GPU. Direct competitor: Core Ultra 9 285K rivals Ryzen 9 9950X; Xeon w7-3555 rivals Threadripper PRO 7965WX.

Feature	Core Ultra 9 285K	Xeon w7-3555
Integrated GPU	Yes	No
IGPU Model	Intel Arc Graphics 64EU	None
Unlocked	Yes	Yes
AVX-512	No	Yes
Virtualization	true	true

💰

Value Analysis

The Core Ultra 9 285K launched at $589 MSRP, while the Xeon w7-3555 debuted at $2749. On MSRP ($589 vs $2749), the Core Ultra 9 285K is $2160 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core Ultra 9 285K delivers 114.6 pts/$ vs 24.6 pts/$ for the Xeon w7-3555 — making the Core Ultra 9 285K the 129.2% better value option.