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

✅Draws 45W instead of 120W, a 75W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 7 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (13,985 vs 18,500).

Ryzen 7 7800X3D

2023

Why buy it

✅Better for gaming: +17.4% higher average FPS across 7 shared CPU benchmark tests.

Trade-offs

❌Launch MSRP is still $449 MSRP, while Ryzen 5 7645HX mostly shows up through inconsistent older-market listings.
❌166.7% higher power demand at 120W vs 45W.

Ryzen 5 7645HX

2023

Ryzen 7 7800X3D

2023

Why buy it

✅Draws 45W instead of 120W, a 75W reduction.

Why buy it

✅Better for gaming: +17.4% higher average FPS across 7 shared CPU benchmark tests.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 7 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (13,985 vs 18,500).

Trade-offs

❌Launch MSRP is still $449 MSRP, while Ryzen 5 7645HX mostly shows up through inconsistent older-market listings.
❌166.7% higher power demand at 120W vs 45W.

Quick Answers

So, is Ryzen 7 7800X3D better than Ryzen 5 7645HX?

Yes. Ryzen 7 7800X3D is the better overall CPU here. You are getting a 17.4% average FPS lead across 7 shared CPU game tests in our data, 32.3% better Cinebench R23 multi-core, 31.4% higher PassMark, and the stronger long-term platform, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Ryzen 7 7800X3D is the better pick here. According to our tests, it delivers 17.4% more average FPS across 7 shared CPU game tests. It also has a big cache advantage at 96 MB vs 32 MB.

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

For streaming, content creation, and heavier multitasking, Ryzen 7 7800X3D is the better fit. You are getting 32.3% better Cinebench R23 multi-core, backed by 8 cores and 16 threads. It also carries the larger cache pool with 200% larger total L3 cache (96 MB vs 32 MB).

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

Ryzen 7 7800X3D is the smarter buy today. Ryzen 7 7800X3D is at an unclear MSRP at $449 MSRP versus unclear MSRP, and it gives you a 17.4% average FPS lead across 7 shared CPU game tests in our data. It is also 100.0% better value on MSRP (76.4 vs 0.0 PassMark/$), 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 7 7800X3D is the more future-proof choice for 2026 and beyond. You are getting 3D V-Cache and a much larger 96 MB L3 cache instead of 32 MB and more multi-core headroom with 8 cores / 16 threads instead of 6/12. 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 7800X3D Benchmark Check

Path of Exile 2

Preset	Ryzen 5 7645HX	Ryzen 7 7800X3D
1080p
low	272 FPS	266 FPS
medium	249 FPS	247 FPS
high	212 FPS	211 FPS
ultra	182 FPS	186 FPS
1440p
low	229 FPS	258 FPS
medium	190 FPS	215 FPS
high	155 FPS	171 FPS
ultra	137 FPS	154 FPS
4K
low	160 FPS	179 FPS
medium	133 FPS	149 FPS
high	103 FPS	112 FPS
ultra	89 FPS	100 FPS

Open Ryzen 5 7645HX Open Ryzen 7 7800X3D

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 5 7645HX	Ryzen 7 7800X3D
1080p
low	638 FPS	857 FPS
medium	515 FPS	737 FPS
high	430 FPS	580 FPS
ultra	385 FPS	493 FPS
1440p
low	546 FPS	722 FPS
medium	459 FPS	611 FPS
high	390 FPS	500 FPS
ultra	335 FPS	398 FPS
4K
low	347 FPS	396 FPS
medium	294 FPS	339 FPS
high	273 FPS	315 FPS
ultra	236 FPS	273 FPS

Open Ryzen 5 7645HX Open Ryzen 7 7800X3D

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 5 7645HX	Ryzen 7 7800X3D
1080p
low	652 FPS	857 FPS
medium	652 FPS	857 FPS
high	652 FPS	857 FPS
ultra	590 FPS	857 FPS
1440p
low	652 FPS	857 FPS
medium	598 FPS	851 FPS
high	515 FPS	786 FPS
ultra	442 FPS	656 FPS
4K
low	513 FPS	558 FPS
medium	433 FPS	479 FPS
high	374 FPS	427 FPS
ultra	306 FPS	362 FPS

Open Ryzen 5 7645HX Open Ryzen 7 7800X3D

League of Legends

League of Legends

Valorant

Preset	Ryzen 5 7645HX	Ryzen 7 7800X3D
1080p
low	652 FPS	857 FPS
medium	652 FPS	857 FPS
high	652 FPS	857 FPS
ultra	652 FPS	782 FPS
1440p
low	652 FPS	857 FPS
medium	652 FPS	760 FPS
high	652 FPS	669 FPS
ultra	570 FPS	576 FPS
4K
low	586 FPS	618 FPS
medium	525 FPS	556 FPS
high	474 FPS	495 FPS
ultra	405 FPS	428 FPS

Open Ryzen 5 7645HX Open Ryzen 7 7800X3D

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 5 7645HX and Ryzen 7 7800X3D

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 7800X3D

The Ryzen 7 7800X3D is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Raphael (Zen4) (2022−2023) architecture. It features 8 cores and 16 threads. Base frequency is 4.4 GHz, with boost up to 5 GHz. L3 cache: 96 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5-5200. Passmark benchmark score: 34,293 points. Launch price was $449.

⚡

Processing Power

The Ryzen 5 7645HX packs 6 cores / 12 threads, while the Ryzen 7 7800X3D offers 8 cores / 16 threads — the Ryzen 7 7800X3D has 2 more cores. Boost clocks reach 5 GHz on the Ryzen 5 7645HX versus 5 GHz on the Ryzen 7 7800X3D — identical boost frequencies (base: 4 GHz vs 4.4 GHz). The Ryzen 5 7645HX uses the Dragon Range (Zen4) (2023) architecture (5 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the Ryzen 5 7645HX scores 26,097 against the Ryzen 7 7800X3D's 34,293 — a 27.1% lead for the Ryzen 7 7800X3D. Cinebench R23 multi-core: 13,985 vs 18,500 (27.8% advantage for the Ryzen 7 7800X3D). Geekbench 6 single-core — the metric most relevant to gaming — records 2,588 vs 2,700, a 4.2% lead for the Ryzen 7 7800X3D that directly translates to higher frame rates. Multi-core Geekbench: 11,717 vs 15,000 (24.6% advantage for the Ryzen 7 7800X3D). L3 cache: 32 MB (total) on the Ryzen 5 7645HX vs 96 MB (total) on the Ryzen 7 7800X3D.

Feature	Ryzen 5 7645HX	Ryzen 7 7800X3D
Cores / Threads	6 / 12	8 / 16+33%
Boost Clock	5 GHz	5 GHz
Base Clock	4 GHz	4.4 GHz+10%
L3 Cache	32 MB (total)	96 MB (total)+200%
L2 Cache	1 MB (per core)	1 MB (per core)
Process	5 nm	5 nm
Architecture	Dragon Range (Zen4) (2023)	Raphael (Zen4) (2022−2023)
PassMark	26,097	34,293+31%
Cinebench R23 Multi	13,985	18,500+32%
Geekbench 6 Single	2,588	2,700+4%
Geekbench 6 Multi	11,717	15,000+28%

🧠

Memory & Platform

The Ryzen 5 7645HX uses the FL1 socket (PCIe 5.0), while the Ryzen 7 7800X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-5200 memory speed. The Ryzen 7 7800X3D 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. Both provide 28 PCIe lanes. Chipset compatibility: SoC (Ryzen 5 7645HX) and X670E,X670,B650E,B650,A620 (Ryzen 7 7800X3D).

Feature	Ryzen 5 7645HX	Ryzen 7 7800X3D
Socket	FL1	AM5
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-5200	DDR5-5200
Max RAM Capacity	64 GB	128 GB+100%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	28	28

🔧

Advanced Features

Only the Ryzen 7 7800X3D has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: AMD-V (SVM) (Ryzen 5 7645HX) vs AMD-V (Ryzen 7 7800X3D). Both include integrated graphics — Radeon 610M (Ryzen 5 7645HX) and AMD Radeon Graphics (2-core) (Ryzen 7 7800X3D) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Ryzen 5 7645HX targets Gaming, Ryzen 7 7800X3D targets Gaming. Direct competitor: Ryzen 5 7645HX rivals Core i5-13500HX; Ryzen 7 7800X3D rivals Intel Core i7-14700K.