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 i9-7940X

2017

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 7 shared CPU benchmark tests.
❌Lower PassMark (25,452 vs 34,293).
❌Lower PassMark per dollar, at 18.2 vs 76.4 PassMark/$ ($1,399 MSRP vs $449 MSRP).
❌37.5% higher power demand at 165W vs 120W.
❌Older platform position on LGA2066 with DDR4, while Ryzen 7 7800X3D moves to AM5 and DDR5.

Ryzen 7 7800X3D

2023

Why buy it

✅Better for gaming: +69.7% higher average FPS across 7 shared CPU benchmark tests.
✅Costs $950 less on MSRP ($449 MSRP vs $1,399 MSRP).
✅Delivers 319.8% more PassMark for each dollar spent, at 76.4 vs 18.2 PassMark/$ ($449 MSRP vs $1,399 MSRP).
✅Draws 120W instead of 165W, a 45W reduction.
✅Newer platform on AM5 with DDR5 support instead of LGA2066 and DDR4.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Core i9-7940X

2017

Ryzen 7 7800X3D

2023

Why buy it

✅Better for gaming: +69.7% higher average FPS across 7 shared CPU benchmark tests.
✅Costs $950 less on MSRP ($449 MSRP vs $1,399 MSRP).
✅Delivers 319.8% more PassMark for each dollar spent, at 76.4 vs 18.2 PassMark/$ ($449 MSRP vs $1,399 MSRP).
✅Draws 120W instead of 165W, a 45W reduction.
✅Newer platform on AM5 with DDR5 support instead of LGA2066 and DDR4.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 7 shared CPU benchmark tests.
❌Lower PassMark (25,452 vs 34,293).
❌Lower PassMark per dollar, at 18.2 vs 76.4 PassMark/$ ($1,399 MSRP vs $449 MSRP).
❌37.5% higher power demand at 165W vs 120W.
❌Older platform position on LGA2066 with DDR4, while Ryzen 7 7800X3D moves to AM5 and DDR5.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Quick Answers

So, is Ryzen 7 7800X3D better than Core i9-7940X?

Yes. Ryzen 7 7800X3D is the better overall CPU here. You are getting a 69.7% average FPS lead across 7 shared CPU game tests in our data, 34.7% 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 69.7% more average FPS across 7 shared CPU game tests. It also has a big cache advantage at 96 MB vs 19 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 34.7% better PassMark, backed by 8 cores and 16 threads. It also carries the larger cache pool with 398.7% larger total L3 cache (96 MB vs 19 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 $950 cheaper on MSRP at $449 MSRP versus $1,399 MSRP, and it gives you a 69.7% average FPS lead across 7 shared CPU game tests in our data. It is also 319.8% better value on MSRP (76.4 vs 18.2 PassMark/$), 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 2017), a healthier platform with AM5 and DDR5 instead of LGA2066, 3D V-Cache and a much larger 96 MB L3 cache instead of 19 MB, and more multi-core headroom with 8 cores / 16 threads instead of 14/28. 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 i9-7940X Benchmark Check

Ryzen 7 7800X3D Benchmark Check

Path of Exile 2

Preset	Core i9-7940X	Ryzen 7 7800X3D
1080p
low	168 FPS	266 FPS
medium	148 FPS	247 FPS
high	116 FPS	211 FPS
ultra	97 FPS	186 FPS
1440p
low	141 FPS	258 FPS
medium	121 FPS	215 FPS
high	95 FPS	171 FPS
ultra	80 FPS	154 FPS
4K
low	79 FPS	179 FPS
medium	73 FPS	149 FPS
high	57 FPS	112 FPS
ultra	44 FPS	100 FPS

Open Core i9-7940X Open Ryzen 7 7800X3D

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i9-7940X	Ryzen 7 7800X3D
1080p
low	447 FPS	857 FPS
medium	384 FPS	737 FPS
high	331 FPS	580 FPS
ultra	303 FPS	493 FPS
1440p
low	392 FPS	722 FPS
medium	344 FPS	611 FPS
high	298 FPS	500 FPS
ultra	261 FPS	398 FPS
4K
low	250 FPS	396 FPS
medium	219 FPS	339 FPS
high	205 FPS	315 FPS
ultra	179 FPS	273 FPS

Open Core i9-7940X Open Ryzen 7 7800X3D

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i9-7940X	Ryzen 7 7800X3D
1080p
low	534 FPS	857 FPS
medium	451 FPS	857 FPS
high	409 FPS	857 FPS
ultra	365 FPS	857 FPS
1440p
low	485 FPS	857 FPS
medium	415 FPS	851 FPS
high	374 FPS	786 FPS
ultra	334 FPS	656 FPS
4K
low	379 FPS	558 FPS
medium	319 FPS	479 FPS
high	283 FPS	427 FPS
ultra	233 FPS	362 FPS

Open Core i9-7940X Open Ryzen 7 7800X3D

League of Legends

League of Legends

Valorant

Preset	Core i9-7940X	Ryzen 7 7800X3D
1080p
low	636 FPS	857 FPS
medium	636 FPS	857 FPS
high	636 FPS	857 FPS
ultra	610 FPS	782 FPS
1440p
low	636 FPS	857 FPS
medium	636 FPS	760 FPS
high	573 FPS	669 FPS
ultra	500 FPS	576 FPS
4K
low	524 FPS	618 FPS
medium	475 FPS	556 FPS
high	418 FPS	495 FPS
ultra	364 FPS	428 FPS

Open Core i9-7940X Open Ryzen 7 7800X3D

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i9-7940X and Ryzen 7 7800X3D

Core i9-7940X

The Core i9-7940X is manufactured by Intel. It was released in 1 September 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 14 cores and 28 threads. Base frequency is 3.1 GHz, with boost up to 4.4 GHz. L3 cache: 19.25 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 165 Watt. Memory support: DDR4-2666. Passmark benchmark score: 25,452 points. Launch price was $1,399.

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 i9-7940X packs 14 cores / 28 threads, while the Ryzen 7 7800X3D offers 8 cores / 16 threads — the Core i9-7940X has 6 more cores. Boost clocks reach 4.4 GHz on the Core i9-7940X versus 5 GHz on the Ryzen 7 7800X3D — a 12.8% clock advantage for the Ryzen 7 7800X3D (base: 3.1 GHz vs 4.4 GHz). The Core i9-7940X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the Core i9-7940X scores 25,452 against the Ryzen 7 7800X3D's 34,293 — a 29.6% lead for the Ryzen 7 7800X3D. L3 cache: 19.25 MB (total) on the Core i9-7940X vs 96 MB (total) on the Ryzen 7 7800X3D.

Feature	Core i9-7940X	Ryzen 7 7800X3D
Cores / Threads	14 / 28+75%	8 / 16
Boost Clock	4.4 GHz	5 GHz+14%
Base Clock	3.1 GHz	4.4 GHz+42%
L3 Cache	19.25 MB (total)	96 MB (total)+399%
L2 Cache	1 MB (per core)	1 MB (per core)
Process	14 nm	5 nm-64%
Architecture	Skylake (server) (2017−2018)	Raphael (Zen4) (2022−2023)
PassMark	25,452	34,293+35%
Cinebench R23 Multi	—	18,500
Geekbench 6 Single	—	2,700
Geekbench 6 Multi	—	15,000

🧠

Memory & Platform

The Core i9-7940X uses the LGA2066 socket (PCIe 3.0), while the Ryzen 7 7800X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard.

Feature	Core i9-7940X	Ryzen 7 7800X3D
Socket	LGA2066	AM5
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	—	DDR5-5200
Max RAM Capacity	—	128 GB
RAM Channels	—	2
ECC Support	—	Yes
PCIe Lanes	—	28

🔧

Advanced Features

Virtualization: not specified (Core i9-7940X) / AMD-V (Ryzen 7 7800X3D). The Ryzen 7 7800X3D includes integrated graphics (AMD Radeon Graphics (2-core)), while the Core i9-7940X requires a dedicated GPU. Primary use case: Ryzen 7 7800X3D targets Gaming. Direct competitor: Ryzen 7 7800X3D rivals Intel Core i7-14700K.

Feature	Core i9-7940X	Ryzen 7 7800X3D
Integrated GPU	—	Yes
IGPU Model	—	AMD Radeon Graphics (2-core)
Unlocked	—	Yes
AVX-512	—	Yes
Virtualization	—	AMD-V
Target Use	—	Gaming

💰

Value Analysis

The Core i9-7940X launched at $1399 MSRP, while the Ryzen 7 7800X3D debuted at $449. On MSRP ($1399 vs $449), the Ryzen 7 7800X3D is $950 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i9-7940X delivers 18.2 pts/$ vs 76.4 pts/$ for the Ryzen 7 7800X3D — making the Ryzen 7 7800X3D the 123% better value option.