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.

Ryzen 9 7900

2023

Why buy it

✅+1.1% higher PassMark.
✅+89.6% larger total L3 cache (64 MB vs 34 MB).
✅Costs $640 less on MSRP ($429 MSRP vs $1,069 MSRP).
✅Delivers 152.0% more PassMark for each dollar spent, at 112.3 vs 44.6 PassMark/$ ($429 MSRP vs $1,069 MSRP).
✅Draws 65W instead of 252W, a 187W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon w5-2555X across 4 shared CPU benchmark tests.
❌Less compelling for workstation-style loads than Xeon w5-2555X, which brings 14 cores / 28 threads and 112 PCIe lanes.

Xeon w5-2555X

2024

Why buy it

✅Better for gaming: +24.0% higher average FPS across 4 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 14 cores / 28 threads, plus 112 PCIe lanes vs 28.
✅300% more PCIe lanes (112 vs 28) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (47,638 vs 48,168).
❌Smaller total L3 cache (34 MB vs 64 MB).
❌Lower PassMark per dollar, at 44.6 vs 112.3 PassMark/$ ($1,069 MSRP vs $429 MSRP).
❌287.7% higher power demand at 252W vs 65W.
❌No integrated graphics, while Ryzen 9 7900 can still boot and troubleshoot without a discrete GPU.

Ryzen 9 7900

2023

Xeon w5-2555X

2024

Why buy it

✅+1.1% higher PassMark.
✅+89.6% larger total L3 cache (64 MB vs 34 MB).
✅Costs $640 less on MSRP ($429 MSRP vs $1,069 MSRP).
✅Delivers 152.0% more PassMark for each dollar spent, at 112.3 vs 44.6 PassMark/$ ($429 MSRP vs $1,069 MSRP).
✅Draws 65W instead of 252W, a 187W reduction.

Why buy it

✅Better for gaming: +24.0% higher average FPS across 4 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 14 cores / 28 threads, plus 112 PCIe lanes vs 28.
✅300% more PCIe lanes (112 vs 28) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon w5-2555X across 4 shared CPU benchmark tests.
❌Less compelling for workstation-style loads than Xeon w5-2555X, which brings 14 cores / 28 threads and 112 PCIe lanes.

Trade-offs

❌Lower PassMark (47,638 vs 48,168).
❌Smaller total L3 cache (34 MB vs 64 MB).
❌Lower PassMark per dollar, at 44.6 vs 112.3 PassMark/$ ($1,069 MSRP vs $429 MSRP).
❌287.7% higher power demand at 252W vs 65W.
❌No integrated graphics, while Ryzen 9 7900 can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Ryzen 9 7900 better than Xeon w5-2555X?

Not in a simple one-size-fits-all way. Xeon w5-2555X makes more sense for workstation-style multi-core throughput, while Ryzen 9 7900 is the better mainstream desktop choice for gaming, platform cost, and day-to-day practicality.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 7900 is the better fit. You are getting 1.1% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 89.6% larger total L3 cache (64 MB vs 34 MB).

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

Ryzen 9 7900 is the smarter buy today. Ryzen 9 7900 is $640 cheaper on MSRP at $429 MSRP versus $1,069 MSRP, and it gives you 1.1% better PassMark. The trade-off is that Xeon w5-2555X is still the better pure gaming CPU with a 24.0% average FPS lead across 4 shared CPU game tests in our data. It is also 152.0% better value on MSRP (112.3 vs 44.6 PassMark/$), 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 w5-2555X is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2023). 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.

Ryzen 9 7900 Benchmark Check

Xeon w5-2555X Benchmark Check

Path of Exile 2

Preset	Ryzen 9 7900	Xeon w5-2555X
1080p
low	288 FPS	323 FPS
medium	259 FPS	294 FPS
high	218 FPS	239 FPS
ultra	190 FPS	202 FPS
1440p
low	270 FPS	285 FPS
medium	218 FPS	232 FPS
high	170 FPS	177 FPS
ultra	152 FPS	156 FPS
4K
low	187 FPS	196 FPS
medium	151 FPS	159 FPS
high	113 FPS	121 FPS
ultra	101 FPS	107 FPS

Open Ryzen 9 7900 Open Xeon w5-2555X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 7900	Xeon w5-2555X
1080p
low	706 FPS	626 FPS
medium	599 FPS	519 FPS
high	450 FPS	424 FPS
ultra	389 FPS	384 FPS
1440p
low	593 FPS	517 FPS
medium	522 FPS	450 FPS
high	406 FPS	378 FPS
ultra	322 FPS	326 FPS
4K
low	335 FPS	321 FPS
medium	298 FPS	281 FPS
high	264 FPS	258 FPS
ultra	226 FPS	228 FPS

Open Ryzen 9 7900 Open Xeon w5-2555X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 7900	Xeon w5-2555X
1080p
low	876 FPS	1025 FPS
medium	699 FPS	1191 FPS
high	608 FPS	1136 FPS
ultra	518 FPS	875 FPS
1440p
low	702 FPS	1025 FPS
medium	562 FPS	953 FPS
high	481 FPS	859 FPS
ultra	408 FPS	656 FPS
4K
low	499 FPS	656 FPS
medium	414 FPS	553 FPS
high	372 FPS	494 FPS
ultra	312 FPS	420 FPS

Open Ryzen 9 7900 Open Xeon w5-2555X

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 7900	Xeon w5-2555X
1080p
low	1125 FPS	1191 FPS
medium	987 FPS	1015 FPS
high	860 FPS	982 FPS
ultra	765 FPS	847 FPS
1440p
low	892 FPS	1023 FPS
medium	774 FPS	883 FPS
high	677 FPS	767 FPS
ultra	580 FPS	653 FPS
4K
low	644 FPS	733 FPS
medium	570 FPS	637 FPS
high	503 FPS	562 FPS
ultra	434 FPS	437 FPS

Open Ryzen 9 7900 Open Xeon w5-2555X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 7900 and Xeon w5-2555X

Ryzen 9 7900

The Ryzen 9 7900 is manufactured by AMD. It was released in 14 January 2023 (2 years ago). It is based on the Raphael (Zen4) (2022−2023) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 65 Watt. Memory support: DDR5-5200. Passmark benchmark score: 48,168 points. Launch price was $429.

Xeon w5-2555X

The Xeon w5-2555X is manufactured by Intel. It was released in 2015-01-01. It features 14 cores and 28 threads. Base frequency is 3.3 GHz, with boost up to 4.8 GHz. L3 cache: 33.75 MB Intel® Smart Cache. Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 252 Watt. Memory support: DDR5-4800. Passmark benchmark score: 47,638 points. Launch price was $800.

⚡

Processing Power

The Ryzen 9 7900 packs 12 cores / 24 threads, while the Xeon w5-2555X offers 14 cores / 28 threads — the Xeon w5-2555X has 2 more cores. Boost clocks reach 5.4 GHz on the Ryzen 9 7900 versus 4.8 GHz on the Xeon w5-2555X — a 11.8% clock advantage for the Ryzen 9 7900 (base: 3.7 GHz vs 3.3 GHz). The Ryzen 9 7900 is built on the Raphael (Zen4) (2022−2023) architecture. In PassMark, the Ryzen 9 7900 scores 48,168 against the Xeon w5-2555X's 47,638 — a 1.1% lead for the Ryzen 9 7900. L3 cache: 64 MB (total) on the Ryzen 9 7900 vs 33.75 MB Intel® Smart Cache on the Xeon w5-2555X.

Feature	Ryzen 9 7900	Xeon w5-2555X
Cores / Threads	12 / 24	14 / 28+17%
Boost Clock	5.4 GHz+13%	4.8 GHz
Base Clock	3.7 GHz+12%	3.3 GHz
L3 Cache	64 MB (total)+90%	33.75 MB Intel® Smart Cache
L2 Cache	1 MB (per core)	—
Process	5 nm-29%	Intel 7 nm
Architecture	Raphael (Zen4) (2022−2023)	—
PassMark	48,168+1%	47,638
Cinebench R23 Multi	24,600	—
Geekbench 6 Single	2,800	—
Geekbench 6 Multi	18,000	—

🧠

Memory & Platform

The Ryzen 9 7900 uses the AM5 socket (PCIe 5.0), while the Xeon w5-2555X uses LGA4677 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5200 on the Ryzen 9 7900 versus 4800 on the Xeon w5-2555X — the Xeon w5-2555X supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon w5-2555X supports up to 4096 of RAM compared to 128 GB — 187.9% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 7900) vs 8 (Xeon w5-2555X). PCIe lanes: 28 (Ryzen 9 7900) vs 112 (Xeon w5-2555X) — the Xeon w5-2555X offers 84 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD X670E,AMD X670,AMD B650E,AMD B650,AMD A620 (Ryzen 9 7900) and W790 (Xeon w5-2555X).

Feature	Ryzen 9 7900	Xeon w5-2555X
Socket	AM5	LGA4677
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-5200	4800+95900%
Max RAM Capacity	128 GB+3276700%	4096
RAM Channels	2	8+300%
ECC Support	Yes	Yes
PCIe Lanes	28	112+300%

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: true (Ryzen 9 7900) vs VT-x, VT-d (Xeon w5-2555X). The Ryzen 9 7900 includes integrated graphics (Radeon Graphics (Raphael)), while the Xeon w5-2555X requires a dedicated GPU. Direct competitor: Ryzen 9 7900 rivals Core i9-13900; Xeon w5-2555X rivals Threadripper PRO 7965WX.

Feature	Ryzen 9 7900	Xeon w5-2555X
Integrated GPU	Yes	No
IGPU Model	Radeon Graphics (Raphael)	None
Unlocked	Yes	Yes
AVX-512	Yes	Yes
Virtualization	true	VT-x, VT-d

💰

Value Analysis

The Ryzen 9 7900 launched at $429 MSRP, while the Xeon w5-2555X debuted at $1069. On MSRP ($429 vs $1069), the Ryzen 9 7900 is $640 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 7900 delivers 112.3 pts/$ vs 44.6 pts/$ for the Xeon w5-2555X — making the Ryzen 9 7900 the 86.3% better value option.