Ryzen 7 7800X3D vs Ryzen 9 7940H

CPU

GPU

Ryzen 7 7800X3D

8 Cores16 Thrd120 WWMax: 5 GHz2023

Ryzen family

·······

Buy on Amazon

Ryzen 9 7940H

8 Cores16 Thrd35 WWMax: 5.2 GHz2023

Ryzen family

·······

Buy on Amazon

Ryzen 7 7800X3D vs Ryzen 9 7940H Performance Spectrum

Ryzen 7 7800X3D

8 / 16

34,293

+17.6%

Ryzen Threadripper PRO 7965WX

Ryzen Threadripper 7970X

Ryzen 9 7940H

8 / 16

29,151

0.0%

Ryzen Threadripper 3990X

Ryzen Threadripper PRO 5995WX

About PassMark

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.

Ryzen 7 7800X3D vs Ryzen 9 7940H FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Ryzen 7 7800X3D vs Ryzen 9 7940H: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Ryzen 7 7800X3D

2023

Why buy it

✅Massive L3 cache advantage with 96 MB vs 16 MB, which is a real win in CPU-limited gaming.
✅40% more PCIe lanes (28 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Launch MSRP is still $449 MSRP, while Ryzen 9 7940H mostly shows up through inconsistent older-market listings.
❌242.9% higher power demand at 120W vs 35W.

Ryzen 9 7940H

2023

Why buy it

✅Draws 35W instead of 120W, a 85W reduction.

Trade-offs

❌No 3D V-Cache or similar L3 advantage, which matters in CPU-limited gaming (16 MB vs 96 MB).
❌Lower Cinebench R23 multi-core (17,200 vs 18,500).

Quick Answers

So, is Ryzen 7 7800X3D better than Ryzen 9 7940H?

Yes. Ryzen 7 7800X3D is the better all-around CPU here. It gives you a 2.3% average FPS lead across 17 shared CPU game tests in our data, 7.6% better Cinebench R23 multi-core, 17.6% higher PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Ryzen 7 7800X3D is the better pick. According to our tests, it delivers 2.3% more average FPS across 17 shared CPU game tests. It also has a clear cache advantage at 96 MB versus 16 MB.

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

For streaming, content creation, and heavier multitasking, Ryzen 7 7800X3D is the stronger fit. You are getting 7.6% better Cinebench R23 multi-core, backed by 8 cores and 16 threads. It also has the larger cache pool with 500% larger total L3 cache (96 MB vs 16 MB).

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

Ryzen 7 7800X3D is the better buy right now. Ryzen 7 7800X3D comes in at an unclear MSRP at $449 MSRP versus unclear MSRP, and it still gives you a 2.3% average FPS lead across 17 shared CPU game tests in our data. It is also 100.0% better value on MSRP (76.4 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Ryzen 7 7800X3D makes more sense long term for 2026 and beyond. You are getting 3D V-Cache and a much larger 96 MB L3 cache instead of 16 MB and more multi-core headroom with 8 cores / 16 threads instead of 8/16. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Ryzen 7 7800X3D vs Ryzen 9 7940H Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

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.

Ryzen 9 7940H

The Ryzen 9 7940H is manufactured by AMD. It was released in Janeiro 2023 (2 years ago). It is based on the Phoenix (2023−2024) architecture. It features 8 cores and 16 threads. Base frequency is 4 GHz, with boost up to 5.2 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP8. Thermal design power (TDP): 35 Watt. Memory support: DDR5-5600. Passmark benchmark score: 29,151 points. Launch price was $299.

⚡

Processing Power

Both the Ryzen 7 7800X3D and Ryzen 9 7940H share an identical 8-core/16-thread configuration. Boost clocks reach 5 GHz on the Ryzen 7 7800X3D versus 5.2 GHz on the Ryzen 9 7940H — a 3.9% clock advantage for the Ryzen 9 7940H (base: 4.4 GHz vs 4 GHz). The Ryzen 7 7800X3D uses the Raphael (Zen4) (2022−2023) architecture (5 nm), while the Ryzen 9 7940H uses Phoenix (2023−2024) (4 nm). In PassMark, the Ryzen 7 7800X3D scores 34,293 against the Ryzen 9 7940H's 29,151 — a 16.2% lead for the Ryzen 7 7800X3D. Cinebench R23 multi-core: 18,500 vs 17,200 (7.3% advantage for the Ryzen 7 7800X3D). Geekbench 6 single-core — the metric most relevant to gaming — records 2,700 vs 2,646, a 2% lead for the Ryzen 7 7800X3D that directly translates to higher frame rates. Multi-core Geekbench: 15,000 vs 13,495 (10.6% advantage for the Ryzen 7 7800X3D). L3 cache: 96 MB (total) on the Ryzen 7 7800X3D vs 16 MB (total) on the Ryzen 9 7940H.

Feature	Ryzen 7 7800X3D	Ryzen 9 7940H
Cores / Threads	8 / 16	8 / 16
Boost Clock	5 GHz	5.2 GHz+4%
Base Clock	4.4 GHz+10%	4 GHz
L3 Cache	96 MB (total)+500%	16 MB (total)
L2 Cache	1 MB (per core)	1 MB (per core)
Process	5 nm	4 nm-20%
Architecture	Raphael (Zen4) (2022−2023)	Phoenix (2023−2024)
PassMark	34,293+18%	29,151
Cinebench R23 Multi	18,500+8%	17,200
Geekbench 6 Single	2,700+2%	2,646
Geekbench 6 Multi	15,000+11%	13,495

🧠

Memory & Platform

The Ryzen 7 7800X3D uses the AM5 socket (PCIe 5.0), while the Ryzen 9 7940H uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5200 on the Ryzen 7 7800X3D versus DDR5-5600 on the Ryzen 9 7940H — the Ryzen 9 7940H supports 7.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 9 7940H supports up to 256 GB of RAM compared to 128 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 28 (Ryzen 7 7800X3D) vs 20 (Ryzen 9 7940H) — the Ryzen 7 7800X3D offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X670E,X670,B650E,B650,A620 (Ryzen 7 7800X3D) and FP7,FP7r2,FP8 (Ryzen 9 7940H).

Feature	Ryzen 7 7800X3D	Ryzen 9 7940H
Socket	AM5	FP8
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-5200	DDR5-5600+8%
Max RAM Capacity	128 GB	256 GB+100%
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	28+40%	20

🔧

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: AMD-V (Ryzen 7 7800X3D) vs AMD-V, SVM (Ryzen 9 7940H). Both include integrated graphics — AMD Radeon Graphics (2-core) (Ryzen 7 7800X3D) and Radeon 780M (Ryzen 9 7940H) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Ryzen 7 7800X3D targets Gaming, Ryzen 9 7940H targets High-performance Gaming Laptop. Direct competitor: Ryzen 7 7800X3D rivals Intel Core i7-14700K; Ryzen 9 7940H rivals Core i9-13900H.

Feature	Ryzen 7 7800X3D	Ryzen 9 7940H
Integrated GPU	Yes	Yes
IGPU Model	AMD Radeon Graphics (2-core)	Radeon 780M
Unlocked	Yes	Yes
AVX-512	Yes	Yes
Virtualization	AMD-V	AMD-V, SVM
Target Use	Gaming	High-performance Gaming Laptop