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.

Core i5-9400

2019

Why buy it

✅Costs $257 less on MSRP ($192 MSRP vs $449 MSRP).
✅Draws 65W instead of 120W, a 55W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 7 shared CPU benchmark tests.
❌Lower PassMark (9,372 vs 34,293).
❌Lower PassMark per dollar, at 48.8 vs 76.4 PassMark/$ ($192 MSRP vs $449 MSRP).
❌Older platform position on LGA1151 with DDR4, while Ryzen 7 7800X3D moves to AM5 and DDR5.

Ryzen 7 7800X3D

2023

Why buy it

✅Better for gaming: +113.4% higher average FPS across 7 shared CPU benchmark tests.
✅Delivers 56.5% more PassMark for each dollar spent, at 76.4 vs 48.8 PassMark/$ ($449 MSRP vs $192 MSRP).
✅Newer platform on AM5 with DDR5 support instead of LGA1151 and DDR4.
✅75% more PCIe lanes (28 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌
133.9% HIGHER MSRP
$449 MSRPvs$192 MSRP
❌84.6% higher power demand at 120W vs 65W.

Core i5-9400

2019

Ryzen 7 7800X3D

2023

Why buy it

✅Costs $257 less on MSRP ($192 MSRP vs $449 MSRP).
✅Draws 65W instead of 120W, a 55W reduction.

Why buy it

✅Better for gaming: +113.4% higher average FPS across 7 shared CPU benchmark tests.
✅Delivers 56.5% more PassMark for each dollar spent, at 76.4 vs 48.8 PassMark/$ ($449 MSRP vs $192 MSRP).
✅Newer platform on AM5 with DDR5 support instead of LGA1151 and DDR4.
✅75% more PCIe lanes (28 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 7 shared CPU benchmark tests.
❌Lower PassMark (9,372 vs 34,293).
❌Lower PassMark per dollar, at 48.8 vs 76.4 PassMark/$ ($192 MSRP vs $449 MSRP).
❌Older platform position on LGA1151 with DDR4, while Ryzen 7 7800X3D moves to AM5 and DDR5.

Trade-offs

❌
133.9% HIGHER MSRP
$449 MSRPvs$192 MSRP
❌84.6% higher power demand at 120W vs 65W.

Quick Answers

So, is Ryzen 7 7800X3D better than Core i5-9400?

Yes. Ryzen 7 7800X3D is the better overall CPU here. You are getting a 113.4% average FPS lead across 7 shared CPU game tests in our data, 265.9% better 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 113.4% more average FPS across 7 shared CPU game tests. It also has a big cache advantage at 96 MB vs 9 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 265.9% better PassMark, backed by 8 cores and 16 threads. It also carries the larger cache pool with 966.7% larger total L3 cache (96 MB vs 9 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 133.9% more expensive on MSRP at $449 MSRP versus $192 MSRP, and it gives you a 113.4% average FPS lead across 7 shared CPU game tests in our data. It is also 56.5% better value on MSRP (76.4 vs 48.8 PassMark/$), 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 a newer CPU generation (2023 vs 2019), a healthier platform with AM5 and DDR5 instead of LGA1151, 3D V-Cache and a much larger 96 MB L3 cache instead of 9 MB, and more multi-core headroom with 8 cores / 16 threads instead of 6/6. 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.

Core i5-9400 Benchmark Check

Ryzen 7 7800X3D Benchmark Check

Path of Exile 2

Preset	Core i5-9400	Ryzen 7 7800X3D
1080p
low	179 FPS	266 FPS
medium	144 FPS	247 FPS
high	115 FPS	211 FPS
ultra	91 FPS	186 FPS
1440p
low	152 FPS	258 FPS
medium	122 FPS	215 FPS
high	96 FPS	171 FPS
ultra	75 FPS	154 FPS
4K
low	71 FPS	179 FPS
medium	61 FPS	149 FPS
high	48 FPS	112 FPS
ultra	37 FPS	100 FPS

Open Core i5-9400 Open Ryzen 7 7800X3D

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-9400	Ryzen 7 7800X3D
1080p
low	234 FPS	857 FPS
medium	234 FPS	737 FPS
high	234 FPS	580 FPS
ultra	222 FPS	493 FPS
1440p
low	234 FPS	722 FPS
medium	234 FPS	611 FPS
high	226 FPS	500 FPS
ultra	202 FPS	398 FPS
4K
low	234 FPS	396 FPS
medium	216 FPS	339 FPS
high	196 FPS	315 FPS
ultra	170 FPS	273 FPS

Open Core i5-9400 Open Ryzen 7 7800X3D

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-9400	Ryzen 7 7800X3D
1080p
low	234 FPS	857 FPS
medium	234 FPS	857 FPS
high	234 FPS	857 FPS
ultra	234 FPS	857 FPS
1440p
low	234 FPS	857 FPS
medium	234 FPS	851 FPS
high	234 FPS	786 FPS
ultra	234 FPS	656 FPS
4K
low	234 FPS	558 FPS
medium	226 FPS	479 FPS
high	192 FPS	427 FPS
ultra	152 FPS	362 FPS

Open Core i5-9400 Open Ryzen 7 7800X3D

League of Legends

League of Legends

Valorant

Preset	Core i5-9400	Ryzen 7 7800X3D
1080p
low	234 FPS	857 FPS
medium	234 FPS	857 FPS
high	234 FPS	857 FPS
ultra	234 FPS	782 FPS
1440p
low	234 FPS	857 FPS
medium	234 FPS	760 FPS
high	234 FPS	669 FPS
ultra	234 FPS	576 FPS
4K
low	234 FPS	618 FPS
medium	234 FPS	556 FPS
high	234 FPS	495 FPS
ultra	234 FPS	428 FPS

Open Core i5-9400 Open Ryzen 7 7800X3D

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i5-9400 and Ryzen 7 7800X3D

Core i5-9400

The Core i5-9400 is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Coffee Lake (2017−2019) architecture. It features 6 cores and 6 threads. Base frequency is 2.9 GHz, with boost up to 4.1 GHz. L3 cache: 9 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 65 Watt. Memory support: DDR4-2666. Passmark benchmark score: 9,372 points. Launch price was $182.

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 Core i5-9400 packs 6 cores / 6 threads, while the Ryzen 7 7800X3D offers 8 cores / 16 threads — the Ryzen 7 7800X3D has 2 more cores. Boost clocks reach 4.1 GHz on the Core i5-9400 versus 5 GHz on the Ryzen 7 7800X3D — a 19.8% clock advantage for the Ryzen 7 7800X3D (base: 2.9 GHz vs 4.4 GHz). The Core i5-9400 uses the Coffee Lake (2017−2019) architecture (14 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the Core i5-9400 scores 9,372 against the Ryzen 7 7800X3D's 34,293 — a 114.1% lead for the Ryzen 7 7800X3D. L3 cache: 9 MB (total) on the Core i5-9400 vs 96 MB (total) on the Ryzen 7 7800X3D.

Feature	Core i5-9400	Ryzen 7 7800X3D
Cores / Threads	6 / 6	8 / 16+33%
Boost Clock	4.1 GHz	5 GHz+22%
Base Clock	2.9 GHz	4.4 GHz+52%
L3 Cache	9 MB (total)	96 MB (total)+967%
L2 Cache	256K (per core)	1 MB (per core)+300%
Process	14 nm	5 nm-64%
Architecture	Coffee Lake (2017−2019)	Raphael (Zen4) (2022−2023)
PassMark	9,372	34,293+266%
Cinebench R23 Multi	—	18,500
Geekbench 6 Single	—	2,700
Geekbench 6 Multi	—	15,000

🧠

Memory & Platform

The Core i5-9400 uses the LGA1151 socket (PCIe 3.0), while the Ryzen 7 7800X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i5-9400 versus DDR5-5200 on the Ryzen 7 7800X3D — the Ryzen 7 7800X3D supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i5-9400) vs 28 (Ryzen 7 7800X3D) — the Ryzen 7 7800X3D offers 12 more lanes for additional GPUs or NVMe drives.

Feature	Core i5-9400	Ryzen 7 7800X3D
Socket	LGA1151	AM5
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	DDR4-2666	DDR5-5200+25%
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	16	28+75%

🔧

Advanced Features

Only the Ryzen 7 7800X3D has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Ryzen 7 7800X3D supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core i5-9400) vs AMD-V (Ryzen 7 7800X3D). Both include integrated graphics — UHD Graphics 630 (Core i5-9400) 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: Core i5-9400 targets Desktop, Ryzen 7 7800X3D targets Gaming. Direct competitor: Ryzen 7 7800X3D rivals Intel Core i7-14700K.

Feature	Core i5-9400	Ryzen 7 7800X3D
Integrated GPU	Yes	Yes
IGPU Model	UHD Graphics 630	AMD Radeon Graphics (2-core)
Unlocked	No	Yes
AVX-512	No	Yes
Virtualization	VT-x, VT-d	AMD-V
Target Use	Desktop	Gaming

💰

Value Analysis

The Core i5-9400 launched at $192 MSRP, while the Ryzen 7 7800X3D debuted at $449. On MSRP ($192 vs $449), the Core i5-9400 is $257 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-9400 delivers 48.8 pts/$ vs 76.4 pts/$ for the Ryzen 7 7800X3D — making the Ryzen 7 7800X3D the 44% better value option.