Ryzen 7 5800X vs Ryzen 7 8840U

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 7 5800X

2020

Why buy it

✅+18.4% higher PassMark.
✅+100% larger total L3 cache (32 MB vs 16 MB).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Launch MSRP is still $449 MSRP, while Ryzen 7 8840U mostly shows up through inconsistent older-market listings.
❌275% higher power demand at 105W vs 28W.
❌Older platform position on AM4 with DDR4, while Ryzen 7 8840U moves to FP8 and DDR5.

Ryzen 7 8840U

2023

Why buy it

✅Draws 28W instead of 105W, a 77W reduction.
✅Newer platform on FP8 with DDR5 support instead of AM4 and DDR4.

Trade-offs

❌Lower PassMark (23,415 vs 27,712).
❌Smaller total L3 cache (16 MB vs 32 MB).

Ryzen 7 5800X

2020

Ryzen 7 8840U

2023

Why buy it

✅+18.4% higher PassMark.
✅+100% larger total L3 cache (32 MB vs 16 MB).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Why buy it

✅Draws 28W instead of 105W, a 77W reduction.
✅Newer platform on FP8 with DDR5 support instead of AM4 and DDR4.

Trade-offs

❌Launch MSRP is still $449 MSRP, while Ryzen 7 8840U mostly shows up through inconsistent older-market listings.
❌275% higher power demand at 105W vs 28W.
❌Older platform position on AM4 with DDR4, while Ryzen 7 8840U moves to FP8 and DDR5.

Trade-offs

❌Lower PassMark (23,415 vs 27,712).
❌Smaller total L3 cache (16 MB vs 32 MB).

Quick Answers

So, is Ryzen 7 8840U better than Ryzen 7 5800X?

It depends on what matters more to you. For gaming, Ryzen 7 8840U is ahead with a 2.6% average FPS lead across 4 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 7 5800X pulls ahead with 18.4% better PassMark. Ryzen 7 5800X also has the bigger cache pool with 100% larger total L3 cache (32 MB vs 16 MB).

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

For streaming, content creation, and heavier multitasking, Ryzen 7 5800X is the better fit. You are getting 18.4% better PassMark, backed by 8 cores and 16 threads. It also carries the larger cache pool with 100% larger total L3 cache (32 MB vs 16 MB).

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

Ryzen 7 8840U is still the faster CPU overall, but Ryzen 7 5800X makes more sense if price matters more than absolute performance. Ryzen 7 8840U is at an unclear MSRP at unclear MSRP versus $449 MSRP, and it gives you a 2.6% average FPS lead across 4 shared CPU game tests in our data. The trade-off is that Ryzen 7 5800X is still stronger for heavier multi-core work with 18.4% better PassMark. Ryzen 7 5800X is also 100.0% better value on MSRP (61.7 vs 0.0 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

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

Ryzen 7 8840U is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2020) and a healthier platform with FP8 and DDR5 instead of AM4. That should give you a better long-term upgrade path for motherboard, RAM, and future CPU swaps.

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 7 5800X Benchmark Check

Ryzen 7 8840U Benchmark Check

Path of Exile 2

Preset	Ryzen 7 5800X	Ryzen 7 8840U
1080p
low	206 FPS	255 FPS
medium	178 FPS	235 FPS
high	146 FPS	198 FPS
ultra	110 FPS	170 FPS
1440p
low	170 FPS	227 FPS
medium	142 FPS	189 FPS
high	115 FPS	154 FPS
ultra	88 FPS	136 FPS
4K
low	83 FPS	157 FPS
medium	74 FPS	133 FPS
high	59 FPS	103 FPS
ultra	46 FPS	91 FPS

Open Ryzen 7 5800X Open Ryzen 7 8840U

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 7 5800X	Ryzen 7 8840U
1080p
low	662 FPS	468 FPS
medium	558 FPS	388 FPS
high	466 FPS	336 FPS
ultra	417 FPS	301 FPS
1440p
low	563 FPS	409 FPS
medium	493 FPS	358 FPS
high	423 FPS	310 FPS
ultra	361 FPS	265 FPS
4K
low	350 FPS	269 FPS
medium	308 FPS	247 FPS
high	288 FPS	234 FPS
ultra	250 FPS	202 FPS

Open Ryzen 7 5800X Open Ryzen 7 8840U

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 7 5800X	Ryzen 7 8840U
1080p
low	693 FPS	585 FPS
medium	651 FPS	585 FPS
high	570 FPS	585 FPS
ultra	464 FPS	585 FPS
1440p
low	693 FPS	585 FPS
medium	573 FPS	585 FPS
high	498 FPS	525 FPS
ultra	413 FPS	451 FPS
4K
low	484 FPS	521 FPS
medium	410 FPS	458 FPS
high	363 FPS	406 FPS
ultra	302 FPS	345 FPS

Open Ryzen 7 5800X Open Ryzen 7 8840U

League of Legends

League of Legends

Valorant

Preset	Ryzen 7 5800X	Ryzen 7 8840U
1080p
low	693 FPS	585 FPS
medium	693 FPS	585 FPS
high	693 FPS	585 FPS
ultra	693 FPS	585 FPS
1440p
low	693 FPS	585 FPS
medium	693 FPS	585 FPS
high	672 FPS	585 FPS
ultra	593 FPS	548 FPS
4K
low	604 FPS	559 FPS
medium	550 FPS	501 FPS
high	495 FPS	446 FPS
ultra	436 FPS	384 FPS

Open Ryzen 7 5800X Open Ryzen 7 8840U

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 7 5800X and Ryzen 7 8840U

Ryzen 7 5800X

The Ryzen 7 5800X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 4.7 GHz. L3 cache: 32 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. Passmark benchmark score: 27,712 points. Launch price was $449.

Ryzen 7 8840U

The Ryzen 7 8840U is manufactured by AMD. It was released in 6 December 2023 (1 year ago). It is based on the Hawk Point-U (Zen 4) (2023−2025) architecture. It features 8 cores and 16 threads. Base frequency is 3.3 GHz, with boost up to 5.1 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP8. Thermal design power (TDP): 28 Watt. Memory support: DDR5. Passmark benchmark score: 23,415 points. Launch price was $299.

⚡

Processing Power

Both the Ryzen 7 5800X and Ryzen 7 8840U share an identical 8-core/16-thread configuration. Boost clocks reach 4.7 GHz on the Ryzen 7 5800X versus 5.1 GHz on the Ryzen 7 8840U — a 8.2% clock advantage for the Ryzen 7 8840U (base: 3.8 GHz vs 3.3 GHz). The Ryzen 7 5800X uses the Vermeer (Zen 3) (2020−2022) architecture (7 nm, 12 nm), while the Ryzen 7 8840U uses Hawk Point-U (Zen 4) (2023−2025) (4 nm). In PassMark, the Ryzen 7 5800X scores 27,712 against the Ryzen 7 8840U's 23,415 — a 16.8% lead for the Ryzen 7 5800X. L3 cache: 32 MB on the Ryzen 7 5800X vs 16 MB (total) on the Ryzen 7 8840U.

Feature	Ryzen 7 5800X	Ryzen 7 8840U
Cores / Threads	8 / 16	8 / 16
Boost Clock	4.7 GHz	5.1 GHz+9%
Base Clock	3.8 GHz+15%	3.3 GHz
L3 Cache	32 MB+100%	16 MB (total)
L2 Cache	512K (per core)	1 MB (per core)+100%
Process	7 nm, 12 nm	4 nm-43%
Architecture	Vermeer (Zen 3) (2020−2022)	Hawk Point-U (Zen 4) (2023−2025)
PassMark	27,712+18%	23,415

🧠

Memory & Platform

The Ryzen 7 5800X uses the AM4 socket (PCIe 4.0), while the Ryzen 7 8840U uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard.