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 5 7645HX

2023

Why buy it

✅Better for gaming: +3.3% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 45W instead of 105W, a 60W reduction.
✅Newer platform on FL1 with DDR5 support instead of AM4 and DDR4.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon 610M, while Ryzen 7 5800X needs a discrete GPU.

Trade-offs

❌Lower PassMark (26,097 vs 27,712).

Ryzen 7 5800X

2020

Why buy it

✅+6.2% higher PassMark.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 5 7645HX across 50 shared CPU benchmark tests.
❌Launch MSRP is still $449 MSRP, while Ryzen 5 7645HX mostly shows up through inconsistent older-market listings.
❌133.3% higher power demand at 105W vs 45W.
❌Older platform position on AM4 with DDR4, while Ryzen 5 7645HX moves to FL1 and DDR5.
❌No integrated graphics, while Ryzen 5 7645HX can still boot and troubleshoot without a discrete GPU.

Ryzen 5 7645HX

2023

Ryzen 7 5800X

2020

Why buy it

✅Better for gaming: +3.3% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 45W instead of 105W, a 60W reduction.
✅Newer platform on FL1 with DDR5 support instead of AM4 and DDR4.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon 610M, while Ryzen 7 5800X needs a discrete GPU.

Why buy it

✅+6.2% higher PassMark.

Trade-offs

❌Lower PassMark (26,097 vs 27,712).

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 5 7645HX across 50 shared CPU benchmark tests.
❌Launch MSRP is still $449 MSRP, while Ryzen 5 7645HX mostly shows up through inconsistent older-market listings.
❌133.3% higher power demand at 105W vs 45W.
❌Older platform position on AM4 with DDR4, while Ryzen 5 7645HX moves to FL1 and DDR5.
❌No integrated graphics, while Ryzen 5 7645HX can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Ryzen 5 7645HX better than Ryzen 7 5800X?

It depends on what matters more to you. For gaming, Ryzen 5 7645HX is ahead with a 3.3% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 7 5800X pulls ahead with 6.2% better PassMark.

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 6.2% better PassMark, backed by 8 cores and 16 threads.

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

Ryzen 5 7645HX is still the faster CPU overall, but Ryzen 7 5800X makes more sense if price matters more than absolute performance. Ryzen 5 7645HX is at an unclear MSRP at unclear MSRP versus $449 MSRP, and it gives you a 3.3% average FPS lead across 50 shared CPU game tests in our data. The trade-off is that Ryzen 7 5800X is still stronger for heavier multi-core work with 6.2% better PassMark. Ryzen 7 5800X is also 100.0% better value on MSRP (61.7 vs 0.0 PassMark/$), 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 5 7645HX 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 FL1 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 5 7645HX Benchmark Check

Ryzen 7 5800X Benchmark Check

Path of Exile 2

Preset	Ryzen 5 7645HX	Ryzen 7 5800X
1080p
low	272 FPS	206 FPS
medium	249 FPS	178 FPS
high	212 FPS	146 FPS
ultra	182 FPS	110 FPS
1440p
low	229 FPS	170 FPS
medium	190 FPS	142 FPS
high	155 FPS	115 FPS
ultra	137 FPS	88 FPS
4K
low	160 FPS	83 FPS
medium	133 FPS	74 FPS
high	103 FPS	59 FPS
ultra	89 FPS	46 FPS

Open Ryzen 5 7645HX Open Ryzen 7 5800X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 5 7645HX	Ryzen 7 5800X
1080p
low	638 FPS	662 FPS
medium	515 FPS	558 FPS
high	430 FPS	466 FPS
ultra	385 FPS	417 FPS
1440p
low	546 FPS	563 FPS
medium	459 FPS	493 FPS
high	390 FPS	423 FPS
ultra	335 FPS	361 FPS
4K
low	347 FPS	350 FPS
medium	294 FPS	308 FPS
high	273 FPS	288 FPS
ultra	236 FPS	250 FPS

Open Ryzen 5 7645HX Open Ryzen 7 5800X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 5 7645HX	Ryzen 7 5800X
1080p
low	652 FPS	693 FPS
medium	652 FPS	651 FPS
high	652 FPS	570 FPS
ultra	590 FPS	464 FPS
1440p
low	652 FPS	693 FPS
medium	598 FPS	573 FPS
high	515 FPS	498 FPS
ultra	442 FPS	413 FPS
4K
low	513 FPS	484 FPS
medium	433 FPS	410 FPS
high	374 FPS	363 FPS
ultra	306 FPS	302 FPS

Open Ryzen 5 7645HX Open Ryzen 7 5800X

League of Legends

League of Legends

Valorant

Preset	Ryzen 5 7645HX	Ryzen 7 5800X
1080p
low	652 FPS	693 FPS
medium	652 FPS	693 FPS
high	652 FPS	693 FPS
ultra	652 FPS	693 FPS
1440p
low	652 FPS	693 FPS
medium	652 FPS	693 FPS
high	652 FPS	672 FPS
ultra	570 FPS	593 FPS
4K
low	586 FPS	604 FPS
medium	525 FPS	550 FPS
high	474 FPS	495 FPS
ultra	405 FPS	436 FPS

Open Ryzen 5 7645HX Open Ryzen 7 5800X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 5 7645HX and Ryzen 7 5800X

Ryzen 5 7645HX

The Ryzen 5 7645HX is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Dragon Range (Zen4) (2023) architecture. It features 6 cores and 12 threads. Base frequency is 4 GHz, with boost up to 5 GHz. L3 cache: 32 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: FL1. Thermal design power (TDP): 45 Watt. Memory support: DDR5-5200. Passmark benchmark score: 26,097 points. Launch price was $299.

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.

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Processing Power

The Ryzen 5 7645HX packs 6 cores / 12 threads, while the Ryzen 7 5800X offers 8 cores / 16 threads — the Ryzen 7 5800X has 2 more cores. Boost clocks reach 5 GHz on the Ryzen 5 7645HX versus 4.7 GHz on the Ryzen 7 5800X — a 6.2% clock advantage for the Ryzen 5 7645HX (base: 4 GHz vs 3.8 GHz). The Ryzen 5 7645HX uses the Dragon Range (Zen4) (2023) architecture (5 nm), while the Ryzen 7 5800X uses Vermeer (Zen 3) (2020−2022) (7 nm, 12 nm). In PassMark, the Ryzen 5 7645HX scores 26,097 against the Ryzen 7 5800X's 27,712 — a 6% lead for the Ryzen 7 5800X. L3 cache: 32 MB (total) on the Ryzen 5 7645HX vs 32 MB on the Ryzen 7 5800X.

Feature	Ryzen 5 7645HX	Ryzen 7 5800X
Cores / Threads	6 / 12	8 / 16+33%
Boost Clock	5 GHz+6%	4.7 GHz
Base Clock	4 GHz+5%	3.8 GHz
L3 Cache	32 MB (total)	32 MB
L2 Cache	1 MB (per core)+100%	512K (per core)
Process	5 nm-29%	7 nm, 12 nm
Architecture	Dragon Range (Zen4) (2023)	Vermeer (Zen 3) (2020−2022)
PassMark	26,097	27,712+6%
Cinebench R23 Multi	13,985	—
Geekbench 6 Single	2,588	—
Geekbench 6 Multi	11,717	—

🧠

Memory & Platform

The Ryzen 5 7645HX uses the FL1 socket (PCIe 5.0), while the Ryzen 7 5800X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5200 on the Ryzen 5 7645HX versus DDR4-3200 on the Ryzen 7 5800X — the Ryzen 5 7645HX supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 5800X supports up to 128 GB of RAM compared to 64 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 28 (Ryzen 5 7645HX) vs 24 (Ryzen 7 5800X) — the Ryzen 5 7645HX offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SoC (Ryzen 5 7645HX) and AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 7 5800X).

Feature	Ryzen 5 7645HX	Ryzen 7 5800X
Socket	FL1	AM4
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-5200+25%	DDR4-3200
Max RAM Capacity	64 GB	128 GB+100%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	28+17%	24

🔧

Advanced Features

Only the Ryzen 7 5800X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Ryzen 5 7645HX supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (SVM) (Ryzen 5 7645HX) vs AMD-V (Ryzen 7 5800X). The Ryzen 5 7645HX includes integrated graphics (Radeon 610M), while the Ryzen 7 5800X requires a dedicated GPU. Primary use case: Ryzen 5 7645HX targets Gaming, Ryzen 7 5800X targets Desktop. Direct competitor: Ryzen 5 7645HX rivals Core i5-13500HX.