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 i7-12700K

2021

Why buy it

Trade-offs

❌Lower PassMark (34,347 vs 55,711).
❌Smaller total L3 cache (25 MB vs 64 MB).
❌Launch MSRP is still $409 MSRP, while Ryzen 9 9955HX mostly shows up through inconsistent older-market listings.
❌127.3% higher power demand at 125W vs 55W.

Ryzen 9 9955HX

2025

Why buy it

✅+156% larger total L3 cache (64 MB vs 25 MB).
✅Draws 55W instead of 125W, a 70W reduction.
✅40% more PCIe lanes (28 vs 20) for storage and expansion-heavy builds.

Trade-offs

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

Core i7-12700K

2021

Ryzen 9 9955HX

2025

Why buy it

✅+156% larger total L3 cache (64 MB vs 25 MB).
✅Draws 55W instead of 125W, a 70W reduction.
✅40% more PCIe lanes (28 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (34,347 vs 55,711).
❌Smaller total L3 cache (25 MB vs 64 MB).
❌Launch MSRP is still $409 MSRP, while Ryzen 9 9955HX mostly shows up through inconsistent older-market listings.
❌127.3% higher power demand at 125W vs 55W.

Trade-offs

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

Quick Answers

So, is Ryzen 9 9955HX better than Core i7-12700K?

Yes. Ryzen 9 9955HX is the better overall CPU here. You are getting a 0.8% average FPS lead across 50 shared CPU game tests in our data, 62.2% 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 9 9955HX is the better pick here. According to our tests, it delivers 0.8% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 9955HX is the better fit. You are getting 62.2% better PassMark, backed by 16 cores and 32 threads. It also carries the larger cache pool with 156% larger total L3 cache (64 MB vs 25 MB).

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

Ryzen 9 9955HX is still the faster CPU overall, but Core i7-12700K makes more sense if price matters more than absolute performance. Ryzen 9 9955HX is at an unclear MSRP at unclear MSRP versus $409 MSRP, and it gives you a 0.8% average FPS lead across 50 shared CPU game tests in our data. Core i7-12700K is also 100.0% better value on MSRP (84.0 vs 0.0 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

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

Ryzen 9 9955HX is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2021), 156% larger total L3 cache (64 MB vs 25 MB), and more multi-core headroom with 16 cores / 32 threads instead of 12/20. 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 i7-12700K Benchmark Check

Ryzen 9 9955HX Benchmark Check

Path of Exile 2

Preset	Core i7-12700K	Ryzen 9 9955HX
1080p
low	314 FPS	284 FPS
medium	295 FPS	261 FPS
high	246 FPS	214 FPS
ultra	193 FPS	180 FPS
1440p
low	269 FPS	260 FPS
medium	225 FPS	217 FPS
high	182 FPS	167 FPS
ultra	145 FPS	147 FPS
4K
low	170 FPS	181 FPS
medium	142 FPS	151 FPS
high	109 FPS	115 FPS
ultra	96 FPS	102 FPS

Open Core i7-12700K Open Ryzen 9 9955HX

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i7-12700K	Ryzen 9 9955HX
1080p
low	630 FPS	666 FPS
medium	533 FPS	577 FPS
high	450 FPS	433 FPS
ultra	410 FPS	369 FPS
1440p
low	536 FPS	564 FPS
medium	475 FPS	503 FPS
high	403 FPS	389 FPS
ultra	349 FPS	305 FPS
4K
low	312 FPS	318 FPS
medium	280 FPS	288 FPS
high	266 FPS	253 FPS
ultra	234 FPS	214 FPS

Open Core i7-12700K Open Ryzen 9 9955HX

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i7-12700K	Ryzen 9 9955HX
1080p
low	797 FPS	848 FPS
medium	633 FPS	678 FPS
high	556 FPS	600 FPS
ultra	472 FPS	515 FPS
1440p
low	704 FPS	678 FPS
medium	565 FPS	542 FPS
high	490 FPS	469 FPS
ultra	422 FPS	397 FPS
4K
low	510 FPS	482 FPS
medium	425 FPS	399 FPS
high	381 FPS	359 FPS
ultra	321 FPS	301 FPS

Open Core i7-12700K Open Ryzen 9 9955HX

League of Legends

League of Legends

Valorant

Preset	Core i7-12700K	Ryzen 9 9955HX
1080p
low	859 FPS	1071 FPS
medium	802 FPS	966 FPS
high	699 FPS	843 FPS
ultra	628 FPS	759 FPS
1440p
low	760 FPS	840 FPS
medium	678 FPS	746 FPS
high	590 FPS	651 FPS
ultra	519 FPS	564 FPS
4K
low	535 FPS	618 FPS
medium	488 FPS	553 FPS
high	437 FPS	487 FPS
ultra	384 FPS	420 FPS

Open Core i7-12700K Open Ryzen 9 9955HX

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i7-12700K and Ryzen 9 9955HX

Core i7-12700K

The Core i7-12700K is manufactured by Intel. It was released in 4 November 2021 (4 years ago). It is based on the Alder Lake, Golden Cove, Gracemont (2021) architecture. It features 12 cores and 20 threads. Base frequency is 3.6 GHz, with boost up to 5 GHz. L3 cache: 25 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm process technology. Socket: LGA1700. Thermal design power (TDP): 125 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 34,347 points. Launch price was $409.

Ryzen 9 9955HX

The Ryzen 9 9955HX is manufactured by AMD. It was released in 2025-01-01. It is based on the Fire Range-HX (Zen 5) (2025) architecture. It features 16 cores and 32 threads. Base frequency is 2.5 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FL1. Thermal design power (TDP): 55 Watt. Memory support: DDR5. Passmark benchmark score: 55,711 points. Launch price was $650.

⚡

Processing Power

The Core i7-12700K packs 12 cores / 20 threads, while the Ryzen 9 9955HX offers 16 cores / 32 threads — the Ryzen 9 9955HX has 4 more cores. Boost clocks reach 5 GHz on the Core i7-12700K versus 5.4 GHz on the Ryzen 9 9955HX — a 7.7% clock advantage for the Ryzen 9 9955HX (base: 3.6 GHz vs 2.5 GHz). The Core i7-12700K uses the Alder Lake, Golden Cove, Gracemont (2021) architecture (10 nm), while the Ryzen 9 9955HX uses Fire Range-HX (Zen 5) (2025) (4 nm). In PassMark, the Core i7-12700K scores 34,347 against the Ryzen 9 9955HX's 55,711 — a 47.4% lead for the Ryzen 9 9955HX. L3 cache: 25 MB (total) on the Core i7-12700K vs 64 MB (total) on the Ryzen 9 9955HX.

Feature	Core i7-12700K	Ryzen 9 9955HX
Cores / Threads	12 / 20	16 / 32+33%
Boost Clock	5 GHz	5.4 GHz+8%
Base Clock	3.6 GHz+44%	2.5 GHz
L3 Cache	25 MB (total)	64 MB (total)+156%
L2 Cache	1.25 MB (per core)+25%	1 MB (per core)
Process	10 nm	4 nm-60%
Architecture	Alder Lake, Golden Cove, Gracemont (2021)	Fire Range-HX (Zen 5) (2025)
PassMark	34,347	55,711+62%
Cinebench R23 Multi	—	38,010
Geekbench 6 Single	—	3,219
Geekbench 6 Multi	—	19,563

🧠

Memory & Platform

The Core i7-12700K uses the LGA1700 socket (PCIe 5.0), while the Ryzen 9 9955HX uses FL1 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 4800 on the Core i7-12700K versus DDR5-5600 on the Ryzen 9 9955HX — the Core i7-12700K supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-12700K supports up to 128 of RAM compared to 96 GB — 28.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i7-12700K) vs 28 (Ryzen 9 9955HX) — the Ryzen 9 9955HX offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Z690,B660 (Core i7-12700K) and AMD FL1 (Ryzen 9 9955HX).

Feature	Core i7-12700K	Ryzen 9 9955HX
Socket	LGA1700	FL1
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	4800+95900%	DDR5-5600
Max RAM Capacity	128	96 GB+78643100%
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	20	28+40%

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Ryzen 9 9955HX supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core i7-12700K) vs true (Ryzen 9 9955HX). Both include integrated graphics — Intel UHD Graphics 770 (Core i7-12700K) and Radeon 610M (Ryzen 9 9955HX) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Direct competitor: Core i7-12700K rivals Ryzen 7 5800X; Ryzen 9 9955HX rivals Core Ultra 9 275HX.