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 5900X

2020

Why buy it

✅Better for gaming: +41.7% higher average FPS across 50 shared CPU benchmark tests.
✅+113.3% larger total L3 cache (64 MB vs 30 MB).
✅Costs $3,289 less on MSRP ($549 MSRP vs $3,838 MSRP).
✅Delivers 650.1% more PassMark for each dollar spent, at 71.0 vs 9.5 PassMark/$ ($549 MSRP vs $3,838 MSRP).
✅Draws 105W instead of 130W, a 25W reduction.

Trade-offs

❌Less compelling for workstation-style loads than Xeon E7-8857 v2, which brings 12 cores / 12 threads and 40 PCIe lanes.

Xeon E7-8857 v2

2014

Why buy it

✅Better for workstations and heavier parallel workloads: 12 cores / 12 threads, plus 40 PCIe lanes vs 24.
✅66.7% more PCIe lanes (40 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Lower PassMark (36,304 vs 38,955).
❌Smaller total L3 cache (30 MB vs 64 MB).
❌Lower PassMark per dollar, at 9.5 vs 71.0 PassMark/$ ($3,838 MSRP vs $549 MSRP).
❌23.8% higher power demand at 130W vs 105W.

Ryzen 9 5900X

2020

Xeon E7-8857 v2

2014

Why buy it

✅Better for gaming: +41.7% higher average FPS across 50 shared CPU benchmark tests.
✅+113.3% larger total L3 cache (64 MB vs 30 MB).
✅Costs $3,289 less on MSRP ($549 MSRP vs $3,838 MSRP).
✅Delivers 650.1% more PassMark for each dollar spent, at 71.0 vs 9.5 PassMark/$ ($549 MSRP vs $3,838 MSRP).
✅Draws 105W instead of 130W, a 25W reduction.

Why buy it

✅Better for workstations and heavier parallel workloads: 12 cores / 12 threads, plus 40 PCIe lanes vs 24.
✅66.7% more PCIe lanes (40 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Less compelling for workstation-style loads than Xeon E7-8857 v2, which brings 12 cores / 12 threads and 40 PCIe lanes.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Lower PassMark (36,304 vs 38,955).
❌Smaller total L3 cache (30 MB vs 64 MB).
❌Lower PassMark per dollar, at 9.5 vs 71.0 PassMark/$ ($3,838 MSRP vs $549 MSRP).
❌23.8% higher power demand at 130W vs 105W.

Quick Answers

So, is Ryzen 9 5900X better than Xeon E7-8857 v2?

Not in a simple one-size-fits-all way. Xeon E7-8857 v2 makes more sense for workstation-style multi-core throughput, while Ryzen 9 5900X 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, Ryzen 9 5900X is the better pick here. According to our tests, it delivers 41.7% 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, Ryzen 9 5900X is the better fit. You are getting 7.3% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 113.3% larger total L3 cache (64 MB vs 30 MB).

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

Ryzen 9 5900X is the smarter buy today. Ryzen 9 5900X is $3,289 cheaper on MSRP at $549 MSRP versus $3,838 MSRP, and it gives you a 41.7% average FPS lead across 50 shared CPU game tests in our data. It is also 650.1% better value on MSRP (71.0 vs 9.5 PassMark/$), 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?

Ryzen 9 5900X is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2014), 113.3% larger total L3 cache (64 MB vs 30 MB), and more multi-core headroom with 12 cores / 24 threads instead of 12/12. That extra compute headroom should age better as games, background tasks, and creator workloads get heavier.

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 5900X Benchmark Check

Xeon E7-8857 v2 Benchmark Check

Path of Exile 2

Preset	Ryzen 9 5900X	Xeon E7-8857 v2
1080p
low	323 FPS	178 FPS
medium	291 FPS	142 FPS
high	243 FPS	117 FPS
ultra	193 FPS	93 FPS
1440p
low	307 FPS	145 FPS
medium	248 FPS	113 FPS
high	192 FPS	91 FPS
ultra	157 FPS	72 FPS
4K
low	193 FPS	67 FPS
medium	156 FPS	56 FPS
high	115 FPS	44 FPS
ultra	103 FPS	35 FPS

Open Ryzen 9 5900X Open Xeon E7-8857 v2

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 5900X	Xeon E7-8857 v2
1080p
low	772 FPS	328 FPS
medium	647 FPS	288 FPS
high	508 FPS	241 FPS
ultra	450 FPS	195 FPS
1440p
low	619 FPS	287 FPS
medium	536 FPS	258 FPS
high	443 FPS	217 FPS
ultra	364 FPS	174 FPS
4K
low	365 FPS	188 FPS
medium	318 FPS	169 FPS
high	289 FPS	145 FPS
ultra	255 FPS	114 FPS

Open Ryzen 9 5900X Open Xeon E7-8857 v2

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 5900X	Xeon E7-8857 v2
1080p
low	832 FPS	908 FPS
medium	645 FPS	786 FPS
high	558 FPS	744 FPS
ultra	459 FPS	660 FPS
1440p
low	721 FPS	742 FPS
medium	565 FPS	622 FPS
high	488 FPS	589 FPS
ultra	407 FPS	520 FPS
4K
low	511 FPS	467 FPS
medium	421 FPS	365 FPS
high	374 FPS	323 FPS
ultra	308 FPS	260 FPS

Open Ryzen 9 5900X Open Xeon E7-8857 v2

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 5900X	Xeon E7-8857 v2
1080p
low	974 FPS	908 FPS
medium	974 FPS	901 FPS
high	934 FPS	767 FPS
ultra	826 FPS	649 FPS
1440p
low	959 FPS	839 FPS
medium	843 FPS	718 FPS
high	726 FPS	607 FPS
ultra	617 FPS	507 FPS
4K
low	694 FPS	581 FPS
medium	621 FPS	508 FPS
high	541 FPS	445 FPS
ultra	437 FPS	376 FPS

Open Ryzen 9 5900X Open Xeon E7-8857 v2

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 5900X and Xeon E7-8857 v2

Ryzen 9 5900X

The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.

Xeon E7-8857 v2

The Xeon E7-8857 v2 is manufactured by Intel. It was released in 2015-01-01. It features 12 cores and 12 threads. Base frequency is 3 GHz, with boost up to 3.6 GHz. L3 cache: 30 MB. Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 130 Watt. Memory support: DDR3-1066, DDR3-1333, DDR3-1600. Passmark benchmark score: 36,304 points. Launch price was $800.

⚡

Processing Power

The Ryzen 9 5900X packs 12 cores / 24 threads, matching the Xeon E7-8857 v2's 12 cores. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 3.6 GHz on the Xeon E7-8857 v2 — a 28.6% clock advantage for the Ryzen 9 5900X (base: 3.7 GHz vs 3 GHz). The Ryzen 9 5900X is built on the Vermeer (Zen3) (2020−2022) architecture. In PassMark, the Ryzen 9 5900X scores 38,955 against the Xeon E7-8857 v2's 36,304 — a 7% lead for the Ryzen 9 5900X. L3 cache: 64 MB on the Ryzen 9 5900X vs 30 MB on the Xeon E7-8857 v2.

Feature	Ryzen 9 5900X	Xeon E7-8857 v2
Cores / Threads	12 / 24	12 / 12
Boost Clock	4.8 GHz+33%	3.6 GHz
Base Clock	3.7 GHz+23%	3 GHz
L3 Cache	64 MB+113%	30 MB
L2 Cache	512K (per core)	—
Process	7 nm, 12 nm-68%	22 nm
Architecture	Vermeer (Zen3) (2020−2022)	—
PassMark	38,955+7%	36,304
Cinebench R23 Multi	21,000	—
Geekbench 6 Single	2,174	—
Geekbench 6 Multi	11,888	—

🧠

Memory & Platform

The Ryzen 9 5900X uses the AM4 socket (PCIe 4.0), while the Xeon E7-8857 v2 uses LGA2011 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 5900X versus 1600 on the Xeon E7-8857 v2 — the Xeon E7-8857 v2 supports 199% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon E7-8857 v2 supports up to 1536 of RAM compared to 128 GB — 169.2% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 5900X) vs 4 (Xeon E7-8857 v2). PCIe lanes: 24 (Ryzen 9 5900X) vs 40 (Xeon E7-8857 v2) — the Xeon E7-8857 v2 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X) and C602J (Xeon E7-8857 v2).

Feature	Ryzen 9 5900X	Xeon E7-8857 v2
Socket	AM4	LGA2011
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	DDR4-3200	1600+39900%
Max RAM Capacity	128 GB+8738033%	1536
RAM Channels	2	4+100%
ECC Support	Yes	Yes
PCIe Lanes	24	40+67%

🔧

Advanced Features

Only the Ryzen 9 5900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: AMD-V (Ryzen 9 5900X) vs VT-x, VT-d (Xeon E7-8857 v2). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K; Xeon E7-8857 v2 rivals Xeon E7-4850 v2.

Feature	Ryzen 9 5900X	Xeon E7-8857 v2
Integrated GPU	No	No
IGPU Model	—	None
Unlocked	Yes	No
AVX-512	No	No
Virtualization	AMD-V	VT-x, VT-d
Target Use	Workstation	—

💰

Value Analysis

The Ryzen 9 5900X launched at $549 MSRP, while the Xeon E7-8857 v2 debuted at $3838. On MSRP ($549 vs $3838), the Ryzen 9 5900X is $3289 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 5900X delivers 71.0 pts/$ vs 9.5 pts/$ for the Xeon E7-8857 v2 — making the Ryzen 9 5900X the 152.9% better value option.