Core i7-12800HX vs Ryzen 9 PRO 3900

CPU

GPU

Core i7-12800HX

16 Cores24 Thrd55 WWMax: 4.8 GHz2022

Core family

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Ryzen 9 PRO 3900

12 Cores24 Thrd65 WWMax: 4.3 GHz2019

Similar parts

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Core i7-12800HX vs Ryzen 9 PRO 3900 Performance Spectrum

Core i7-12800HX

16 / 24

31,229

0.0%

31,251

+0.1%

Ryzen Threadripper 3990X

Ryzen Threadripper PRO 7975WX

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.

Core i7-12800HX vs Ryzen 9 PRO 3900 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.

Core i7-12800HX vs Ryzen 9 PRO 3900: Pros, Cons & Final Verdict

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

Core i7-12800HX

2022

Why buy it

✅+16.2% higher Geekbench single-core performance for gaming and desktop responsiveness.
✅Draws 55W instead of 65W, a 10W reduction.
✅Newer platform on FCBGA1964 with DDR5 support instead of AM4 and DDR4.
✅Integrated graphics onboard with Intel UHD Graphics 770, while Ryzen 9 PRO 3900 needs a discrete GPU.

Trade-offs

❌Smaller total L3 cache (25 MB vs 64 MB).
❌No boxed cooler included, unlike Ryzen 9 PRO 3900.

Ryzen 9 PRO 3900

2019

Why buy it

✅+156% larger total L3 cache (64 MB vs 25 MB).
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Wraith Prism), unlike Core i7-12800HX.

Trade-offs

❌Lower Geekbench single-core performance for gaming (1,688 vs 1,962).
❌Lower Cinebench R23 multi-core (17,500 vs 18,680).
❌Launch MSRP is still $499 MSRP, while Core i7-12800HX mostly shows up through inconsistent older-market listings.
❌18.2% higher power demand at 65W vs 55W.
❌Older platform position on AM4 with DDR4, while Core i7-12800HX moves to FCBGA1964 and DDR5.

Quick Answers

So, is Core i7-12800HX better than Ryzen 9 PRO 3900?

Yes. Core i7-12800HX is the better all-around CPU here. It gives you a 0.4% average FPS lead across 50 shared CPU game tests in our data, 6.7% better Cinebench R23 multi-core, 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, Core i7-12800HX is the better pick. According to our tests, it delivers 0.4% 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, Core i7-12800HX is the stronger fit. You are getting 6.7% better Cinebench R23 multi-core, backed by 16 cores and 24 threads.

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

Core i7-12800HX is still the faster CPU overall, but Ryzen 9 PRO 3900 is easier to justify if budget matters more than peak performance. Core i7-12800HX comes in at an unclear MSRP at unclear MSRP versus $499 MSRP, and it still gives you a 0.4% average FPS lead across 50 shared CPU game tests in our data. Ryzen 9 PRO 3900 is also 100.0% better value on MSRP (62.6 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Core i7-12800HX makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2019), a healthier platform with FCBGA1964 and DDR5 instead of AM4, and more multi-core headroom with 16 cores / 24 threads instead of 12/24. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i7-12800HX vs Ryzen 9 PRO 3900 Technical Specifications

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

Core i7-12800HX

The Core i7-12800HX is manufactured by Intel. It was released in 10 May 2022 (3 years ago). It is based on the Alder Lake-HX (2022) architecture. It features 16 cores and 24 threads. Base frequency is 2 GHz, with boost up to 4.8 GHz. L3 cache: 25 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: FCBGA1964. Thermal design power (TDP): 55 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 31,229 points. Launch price was $499.

Ryzen 9 PRO 3900

The Ryzen 9 PRO 3900 is manufactured by AMD. It was released in 30 September 2019 (6 years ago). It is based on the Zen 2 (2017−2020) architecture. It features 12 cores and 24 threads. Base frequency is 3.1 GHz, with boost up to 4.3 GHz. L3 cache: 64 MB. L2 cache: 6 MB. Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4-3200. Passmark benchmark score: 31,251 points. Launch price was $499.

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Processing Power

The Core i7-12800HX packs 16 cores / 24 threads, while the Ryzen 9 PRO 3900 offers 12 cores / 24 threads — the Core i7-12800HX has 4 more cores. Boost clocks reach 4.8 GHz on the Core i7-12800HX versus 4.3 GHz on the Ryzen 9 PRO 3900 — a 11% clock advantage for the Core i7-12800HX (base: 2 GHz vs 3.1 GHz). The Core i7-12800HX uses the Alder Lake-HX (2022) architecture (Intel 7 nm), while the Ryzen 9 PRO 3900 uses Zen 2 (2017−2020) (7 nm, 12 nm). In PassMark, the Core i7-12800HX scores 31,229 against the Ryzen 9 PRO 3900's 31,251 — a 0.1% lead for the Ryzen 9 PRO 3900. Cinebench R23 multi-core: 18,680 vs 17,500 (6.5% advantage for the Core i7-12800HX). Geekbench 6 single-core — the metric most relevant to gaming — records 1,962 vs 1,688, a 15% lead for the Core i7-12800HX that directly translates to higher frame rates. Multi-core Geekbench: 15,000 vs 10,000 (40% advantage for the Core i7-12800HX). L3 cache: 25 MB (total) on the Core i7-12800HX vs 64 MB on the Ryzen 9 PRO 3900.

Feature	Core i7-12800HX	Ryzen 9 PRO 3900
Cores / Threads	16 / 24+33%	12 / 24
Boost Clock	4.8 GHz+12%	4.3 GHz
Base Clock	2 GHz	3.1 GHz+55%
L3 Cache	25 MB (total)	64 MB+156%
L2 Cache	1.25 MB (per core)	6 MB+380%
Process	Intel 7 nm	7 nm, 12 nm
Architecture	Alder Lake-HX (2022)	Zen 2 (2017−2020)
PassMark	31,229	31,251
Cinebench R23 Multi	18,680+7%	17,500
Geekbench 6 Single	1,962+16%	1,688
Geekbench 6 Multi	15,000+50%	10,000

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Memory & Platform

The Core i7-12800HX uses the FCBGA1964 socket (PCIe 5.0), while the Ryzen 9 PRO 3900 uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800 on the Core i7-12800HX versus DDR4-3200 on the Ryzen 9 PRO 3900 — the Core i7-12800HX supports 50% 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: 20 (Core i7-12800HX) vs 24 (Ryzen 9 PRO 3900) — the Ryzen 9 PRO 3900 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM670,WM690 (Core i7-12800HX) and X570,B550,X470,B450 (Ryzen 9 PRO 3900).

Feature	Core i7-12800HX	Ryzen 9 PRO 3900
Socket	FCBGA1964	AM4
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-4800+50%	DDR4-3200
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	20	24+20%

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Advanced Features

Both processors feature an unlocked multiplier for overclocking. Virtualization support: VT-x, VT-d, EPT (Core i7-12800HX) vs AMD-V (Ryzen 9 PRO 3900). The Core i7-12800HX includes integrated graphics (Intel UHD Graphics 770), while the Ryzen 9 PRO 3900 requires a dedicated GPU. Primary use case: Core i7-12800HX targets Extreme Gaming Laptop, Ryzen 9 PRO 3900 targets Professional Content Creation. Direct competitor: Core i7-12800HX rivals Ryzen 7 6800HX; Ryzen 9 PRO 3900 rivals Core i9-10900.

Feature	Core i7-12800HX	Ryzen 9 PRO 3900
Integrated GPU	Yes	No
IGPU Model	Intel UHD Graphics 770	—
Unlocked	Yes	Yes
AVX-512	No	No
Virtualization	VT-x, VT-d, EPT	AMD-V
Target Use	Extreme Gaming Laptop	Professional Content Creation