Core i9-7920X vs Ryzen 7 7840S

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 i9-7920X

2017

Why buy it

✅+0.9% higher PassMark.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7840S across 4 shared CPU benchmark tests.
❌Launch MSRP is still $1,199 MSRP, while Ryzen 7 7840S mostly shows up through inconsistent older-market listings.
❌1650% higher power demand at 140W vs 8W.
❌Older platform position on LGA2066 with DDR4, while Ryzen 7 7840S moves to FP7/FP7r2/FP8 and DDR5.
❌No integrated graphics, while Ryzen 7 7840S can still boot and troubleshoot without a discrete GPU.

Ryzen 7 7840S

2023

Why buy it

✅Better for gaming: +25.8% higher average FPS across 4 shared CPU benchmark tests.
✅Draws 8W instead of 140W, a 132W reduction.
✅Newer platform on FP7/FP7r2/FP8 with DDR5 support instead of LGA2066 and DDR4.
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon 780M, while Core i9-7920X needs a discrete GPU.

Trade-offs

❌Lower PassMark (23,290 vs 23,508).

Core i9-7920X

2017

Ryzen 7 7840S

2023

Why buy it

✅+0.9% higher PassMark.

Why buy it

✅Better for gaming: +25.8% higher average FPS across 4 shared CPU benchmark tests.
✅Draws 8W instead of 140W, a 132W reduction.
✅Newer platform on FP7/FP7r2/FP8 with DDR5 support instead of LGA2066 and DDR4.
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon 780M, while Core i9-7920X needs a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7840S across 4 shared CPU benchmark tests.
❌Launch MSRP is still $1,199 MSRP, while Ryzen 7 7840S mostly shows up through inconsistent older-market listings.
❌1650% higher power demand at 140W vs 8W.
❌Older platform position on LGA2066 with DDR4, while Ryzen 7 7840S moves to FP7/FP7r2/FP8 and DDR5.
❌No integrated graphics, while Ryzen 7 7840S can still boot and troubleshoot without a discrete GPU.

Trade-offs

❌Lower PassMark (23,290 vs 23,508).

Quick Answers

So, is Ryzen 7 7840S better than Core i9-7920X?

It depends on what matters more to you. For gaming, Ryzen 7 7840S is ahead with a 25.8% average FPS lead across 4 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i9-7920X pulls ahead with 0.9% better PassMark.

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

For streaming, content creation, and heavier multitasking, Core i9-7920X is the better fit. You are getting 0.9% better PassMark, backed by 12 cores and 24 threads.

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

Ryzen 7 7840S is the smarter buy by a wide margin for a fresh build. Ryzen 7 7840S is at an unclear MSRP at unclear MSRP versus $1,199 MSRP, and it gives you a 25.8% average FPS lead across 4 shared CPU game tests in our data. Core i9-7920X only looks stronger on raw value math because it is extremely cheap, but that is mostly used-market pricing on an obsolete 2017 platform. Even with 100.0% better value on paper (19.6 vs 0.0 PassMark/$), it really only makes sense as a very cheap stopgap or a niche existing-platform option for someone already on LGA2066.

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

Ryzen 7 7840S is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2017) and a healthier platform with FP7/FP7r2/FP8 and DDR5 instead of LGA2066. 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 i9-7920X Benchmark Check

Ryzen 7 7840S Benchmark Check

Path of Exile 2

Preset	Core i9-7920X	Ryzen 7 7840S
1080p
low	163 FPS	269 FPS
medium	142 FPS	243 FPS
high	113 FPS	204 FPS
ultra	96 FPS	176 FPS
1440p
low	140 FPS	236 FPS
medium	119 FPS	193 FPS
high	94 FPS	157 FPS
ultra	79 FPS	139 FPS
4K
low	76 FPS	164 FPS
medium	70 FPS	136 FPS
high	55 FPS	105 FPS
ultra	43 FPS	92 FPS

Open Core i9-7920X Open Ryzen 7 7840S

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i9-7920X	Ryzen 7 7840S
1080p
low	352 FPS	509 FPS
medium	300 FPS	419 FPS
high	274 FPS	361 FPS
ultra	243 FPS	322 FPS
1440p
low	315 FPS	445 FPS
medium	274 FPS	386 FPS
high	249 FPS	332 FPS
ultra	215 FPS	283 FPS
4K
low	227 FPS	293 FPS
medium	201 FPS	266 FPS
high	191 FPS	251 FPS
ultra	162 FPS	216 FPS

Open Core i9-7920X Open Ryzen 7 7840S

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i9-7920X	Ryzen 7 7840S
1080p
low	560 FPS	582 FPS
medium	468 FPS	582 FPS
high	420 FPS	582 FPS
ultra	366 FPS	546 FPS
1440p
low	507 FPS	582 FPS
medium	431 FPS	582 FPS
high	385 FPS	541 FPS
ultra	334 FPS	464 FPS
4K
low	390 FPS	541 FPS
medium	322 FPS	473 FPS
high	284 FPS	419 FPS
ultra	231 FPS	355 FPS

Open Core i9-7920X Open Ryzen 7 7840S

League of Legends

League of Legends

Valorant

Preset	Core i9-7920X	Ryzen 7 7840S
1080p
low	588 FPS	582 FPS
medium	588 FPS	582 FPS
high	588 FPS	582 FPS
ultra	588 FPS	582 FPS
1440p
low	588 FPS	582 FPS
medium	588 FPS	582 FPS
high	579 FPS	582 FPS
ultra	502 FPS	573 FPS
4K
low	531 FPS	572 FPS
medium	480 FPS	511 FPS
high	424 FPS	457 FPS
ultra	366 FPS	394 FPS

Open Core i9-7920X Open Ryzen 7 7840S

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i9-7920X and Ryzen 7 7840S

Core i9-7920X

The Core i9-7920X is manufactured by Intel. It was released in 10 September 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 12 cores and 24 threads. Base frequency is 2.9 GHz, with boost up to 4.4 GHz. L3 cache: 16.5 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 140 Watt. Memory support: DDR4-2666. Passmark benchmark score: 23,508 points. Launch price was $1,199.

Ryzen 7 7840S

The Ryzen 7 7840S is manufactured by AMD. It was released in 5 January 2023 (2 years ago). It is based on the Phoenix-HS (Zen 4) (2023) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 5.1 GHz. L3 cache: 16 MB. L2 cache: 8 MB. Built on 4 nm process technology. Socket: FP7/FP7r2/FP8. Thermal design power (TDP): 8 MB + 16 MB. Memory support: DDR5. Passmark benchmark score: 23,290 points. Launch price was $299.

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Processing Power

The Core i9-7920X packs 12 cores / 24 threads, while the Ryzen 7 7840S offers 8 cores / 16 threads — the Core i9-7920X has 4 more cores. Boost clocks reach 4.4 GHz on the Core i9-7920X versus 5.1 GHz on the Ryzen 7 7840S — a 14.7% clock advantage for the Ryzen 7 7840S (base: 2.9 GHz vs 3.8 GHz). The Core i9-7920X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Ryzen 7 7840S uses Phoenix-HS (Zen 4) (2023) (4 nm). In PassMark, the Core i9-7920X scores 23,508 against the Ryzen 7 7840S's 23,290 — a 0.9% lead for the Core i9-7920X. L3 cache: 16.5 MB (total) on the Core i9-7920X vs 16 MB on the Ryzen 7 7840S.

Feature	Core i9-7920X	Ryzen 7 7840S
Cores / Threads	12 / 24+50%	8 / 16
Boost Clock	4.4 GHz	5.1 GHz+16%
Base Clock	2.9 GHz	3.8 GHz+31%
L3 Cache	16.5 MB (total)+3%	16 MB
L2 Cache	1 MB (per core)	8 MB+700%
Process	14 nm	4 nm-71%
Architecture	Skylake (server) (2017−2018)	Phoenix-HS (Zen 4) (2023)
PassMark	23,508	23,290
Cinebench R23 Multi	—	13,500
Geekbench 6 Single	—	2,570
Geekbench 6 Multi	—	13,535

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Memory & Platform

The Core i9-7920X uses the LGA2066 socket (PCIe 3.0), while the Ryzen 7 7840S uses FP7/FP7r2/FP8 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Core i9-7920X	Ryzen 7 7840S
Socket	LGA2066	FP7/FP7r2/FP8
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	—	DDR5-5600, LPDDR5x-7500
Max RAM Capacity	—	256 GB
RAM Channels	—	2
ECC Support	—	Yes
PCIe Lanes	—	20

🔧

Advanced Features

Virtualization: not specified (Core i9-7920X) / AMD-V (SVM) (Ryzen 7 7840S). The Ryzen 7 7840S includes integrated graphics (Radeon 780M), while the Core i9-7920X requires a dedicated GPU. Primary use case: Ryzen 7 7840S targets Gaming. Direct competitor: Ryzen 7 7840S rivals Core i7-1360P.