Core Ultra 7 155H
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Xeon Gold 6143
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Performance Spectrum - CPU
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 7 155H
2023Why buy it
- ✅Better for gaming: +20.2% higher average FPS across 50 shared CPU benchmark tests.
- ✅Newer platform on FCBGA2049 with DDR5 support instead of LGA3647 and DDR4.
- ✅100+% more PCIe lanes (28 vs 0) for storage and expansion-heavy builds.
- ✅Integrated graphics onboard with Intel Arc Graphics (8 Xe-cores), while Xeon Gold 6143 needs a discrete GPU.
- ✅Includes a boxed cooler (Laptop Integrated), unlike Xeon Gold 6143.
Trade-offs
- ❌Lower PassMark (24,705 vs 24,786).
- ❌Less compelling for workstation-style loads than Xeon Gold 6143, which brings 16 cores / 32 threads.
Xeon Gold 6143
2017Why buy it
- ✅+0.3% higher PassMark.
- ✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads.
Trade-offs
- ❌Worse for gaming: lower average FPS than Core Ultra 7 155H across 50 shared CPU benchmark tests.
- ❌Launch MSRP is still $342 MSRP, while Core Ultra 7 155H mostly shows up through inconsistent older-market listings.
- ❌Older platform position on LGA3647 with DDR4, while Core Ultra 7 155H moves to FCBGA2049 and DDR5.
- ❌No integrated graphics, while Core Ultra 7 155H can still boot and troubleshoot without a discrete GPU.
- ❌No boxed cooler included, unlike Core Ultra 7 155H.
Core Ultra 7 155H
2023Xeon Gold 6143
2017Why buy it
- ✅Better for gaming: +20.2% higher average FPS across 50 shared CPU benchmark tests.
- ✅Newer platform on FCBGA2049 with DDR5 support instead of LGA3647 and DDR4.
- ✅100+% more PCIe lanes (28 vs 0) for storage and expansion-heavy builds.
- ✅Integrated graphics onboard with Intel Arc Graphics (8 Xe-cores), while Xeon Gold 6143 needs a discrete GPU.
- ✅Includes a boxed cooler (Laptop Integrated), unlike Xeon Gold 6143.
Why buy it
- ✅+0.3% higher PassMark.
- ✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads.
Trade-offs
- ❌Lower PassMark (24,705 vs 24,786).
- ❌Less compelling for workstation-style loads than Xeon Gold 6143, which brings 16 cores / 32 threads.
Trade-offs
- ❌Worse for gaming: lower average FPS than Core Ultra 7 155H across 50 shared CPU benchmark tests.
- ❌Launch MSRP is still $342 MSRP, while Core Ultra 7 155H mostly shows up through inconsistent older-market listings.
- ❌Older platform position on LGA3647 with DDR4, while Core Ultra 7 155H moves to FCBGA2049 and DDR5.
- ❌No integrated graphics, while Core Ultra 7 155H can still boot and troubleshoot without a discrete GPU.
- ❌No boxed cooler included, unlike Core Ultra 7 155H.
Quick Answers
So, is Xeon Gold 6143 better than Core Ultra 7 155H?
Which one is better for streaming, content creation, and heavy multitasking?
Which one is the smarter buy today, not just the cheaper CPU?
Which one is more future-proof for 2026 and beyond?
Games Benchmarks
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.
Path of Exile 2
| Preset | Core Ultra 7 155H | Xeon Gold 6143 |
|---|---|---|
| 1080p | ||
| low | 308 FPS | 183 FPS |
| medium | 278 FPS | 147 FPS |
| high | 232 FPS | 119 FPS |
| ultra | 198 FPS | 93 FPS |
| 1440p | ||
| low | 251 FPS | 146 FPS |
| medium | 201 FPS | 114 FPS |
| high | 163 FPS | 92 FPS |
| ultra | 143 FPS | 72 FPS |
| 4K | ||
| low | 173 FPS | 68 FPS |
| medium | 139 FPS | 57 FPS |
| high | 107 FPS | 45 FPS |
| ultra | 93 FPS | 36 FPS |
Counter-Strike 2
| Preset | Core Ultra 7 155H | Xeon Gold 6143 |
|---|---|---|
| 1080p | ||
| low | 618 FPS | 397 FPS |
| medium | 532 FPS | 343 FPS |
| high | 434 FPS | 286 FPS |
| ultra | 389 FPS | 240 FPS |
| 1440p | ||
| low | 550 FPS | 344 FPS |
| medium | 457 FPS | 305 FPS |
| high | 385 FPS | 254 FPS |
| ultra | 328 FPS | 212 FPS |
| 4K | ||
| low | 340 FPS | 222 FPS |
| medium | 286 FPS | 198 FPS |
| high | 261 FPS | 176 FPS |
| ultra | 229 FPS | 144 FPS |
League of Legends
| Preset | Core Ultra 7 155H | Xeon Gold 6143 |
|---|---|---|
| 1080p | ||
| low | 618 FPS | 620 FPS |
| medium | 618 FPS | 620 FPS |
| high | 618 FPS | 620 FPS |
| ultra | 618 FPS | 620 FPS |
| 1440p | ||
| low | 618 FPS | 620 FPS |
| medium | 618 FPS | 620 FPS |
| high | 618 FPS | 620 FPS |
| ultra | 543 FPS | 589 FPS |
| 4K | ||
| low | 618 FPS | 514 FPS |
| medium | 531 FPS | 420 FPS |
| high | 475 FPS | 370 FPS |
| ultra | 402 FPS | 302 FPS |
Valorant
| Preset | Core Ultra 7 155H | Xeon Gold 6143 |
|---|---|---|
| 1080p | ||
| low | 618 FPS | 620 FPS |
| medium | 618 FPS | 620 FPS |
| high | 618 FPS | 620 FPS |
| ultra | 618 FPS | 620 FPS |
| 1440p | ||
| low | 618 FPS | 620 FPS |
| medium | 618 FPS | 620 FPS |
| high | 618 FPS | 614 FPS |
| ultra | 579 FPS | 519 FPS |
| 4K | ||
| low | 606 FPS | 587 FPS |
| medium | 538 FPS | 516 FPS |
| high | 486 FPS | 453 FPS |
| ultra | 423 FPS | 380 FPS |
Technical Specifications
Side-by-side comparison of Core Ultra 7 155H and Xeon Gold 6143
Core Ultra 7 155H
Core Ultra 7 155H
The Core Ultra 7 155H is manufactured by Intel. It was released in 14 December 2023 (1 year ago). It is based on the Meteor Lake-H (2023) architecture. It features 16 cores and 22 threads. Base frequency is 3.8 GHz, with boost up to 4.8 GHz. L3 cache: 24 MB (total). L2 cache: 2 MB (per core). Built on 7 nm process technology. Socket: FCBGA2049. Thermal design power (TDP): + 24 MB. Memory support: DDR5. Passmark benchmark score: 24,705 points. Launch price was $503.
Xeon Gold 6143
Xeon Gold 6143
The Xeon Gold 6143 is manufactured by Intel. It was released in 2015-01-01. It features 16 cores and 32 threads. Base frequency is 2.8 GHz, with boost up to 4 GHz. L3 cache: 22 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 205 Watt. Memory support: DDR4-2666. Passmark benchmark score: 24,786 points. Launch price was $800.
Processing Power
The Core Ultra 7 155H packs 16 cores / 22 threads, matching the Xeon Gold 6143's 16 cores. Boost clocks reach 4.8 GHz on the Core Ultra 7 155H versus 4 GHz on the Xeon Gold 6143 — a 18.2% clock advantage for the Core Ultra 7 155H (base: 3.8 GHz vs 2.8 GHz). The Core Ultra 7 155H is built on the Meteor Lake-H (2023) architecture. In PassMark, the Core Ultra 7 155H scores 24,705 against the Xeon Gold 6143's 24,786 — a 0.3% lead for the Xeon Gold 6143. L3 cache: 24 MB (total) on the Core Ultra 7 155H vs 22 MB on the Xeon Gold 6143.
| Feature | Core Ultra 7 155H | Xeon Gold 6143 |
|---|---|---|
| Cores / Threads | 16 / 22 | 16 / 32 |
| Boost Clock | 4.8 GHz+20% | 4 GHz |
| Base Clock | 3.8 GHz+36% | 2.8 GHz |
| L3 Cache | 24 MB (total)+9% | 22 MB |
| L2 Cache | 2 MB (per core) | — |
| Process | 7 nm-50% | 14 nm |
| Architecture | Meteor Lake-H (2023) | — |
| PassMark | 24,705 | 24,786 |
| Cinebench R23 Multi | 17,650 | — |
| Geekbench 6 Single | 2,384 | — |
| Geekbench 6 Multi | 12,433 | — |
Memory & Platform
The Core Ultra 7 155H uses the FCBGA2049 socket (PCIe 5.0), while the Xeon Gold 6143 uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Core Ultra 7 155H | Xeon Gold 6143 |
|---|---|---|
| Socket | FCBGA2049 | LGA3647 |
| PCIe Generation | PCIe 5.0+67% | PCIe 3.0 |
| Max RAM Speed | LPDDR5x-7467, DDR5-5600 | — |
| Max RAM Capacity | 96 GB | — |
| RAM Channels | 2 | — |
| ECC Support | No | — |
| PCIe Lanes | 28 | — |
Advanced Features
Virtualization: VT-x, VT-d, EPT (Core Ultra 7 155H) / not specified (Xeon Gold 6143). The Core Ultra 7 155H includes integrated graphics (Intel Arc Graphics (8 Xe-cores)), while the Xeon Gold 6143 requires a dedicated GPU. Primary use case: Core Ultra 7 155H targets Thin-and-light Performance / AI. Direct competitor: Core Ultra 7 155H rivals Ryzen 7 8840HS.
| Feature | Core Ultra 7 155H | Xeon Gold 6143 |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Intel Arc Graphics (8 Xe-cores) | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | VT-x, VT-d, EPT | — |
| Target Use | Thin-and-light Performance / AI | — |
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