Core i3-8121U vs Pentium Gold G5620

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 i3-8121U vs Pentium Gold G5620 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 i3-8121U vs Pentium Gold G5620: Pros, Cons & Final Verdict

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

Core i3-8121U

2018

Why buy it

✅+0.5% higher PassMark.
✅Draws 15W instead of 54W, a 39W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Pentium Gold G5620 across 50 shared CPU benchmark tests.

Pentium Gold G5620

2019

Why buy it

✅Better for gaming: +6.3% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Lower PassMark (4,251 vs 4,271).
❌260% higher power demand at 54W vs 15W.

Quick Answers

So, is Core i3-8121U better than Pentium Gold G5620?

It depends on what you want from the system. For gaming, Pentium Gold G5620 is ahead with a 6.3% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i3-8121U pulls ahead with 0.5% better PassMark.

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

For streaming, content creation, and heavier multitasking, Core i3-8121U is the stronger fit. You are getting 0.5% better PassMark, backed by 2 cores and 4 threads.

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

Core i3-8121U still makes the most sense overall. Core i3-8121U comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 0.5% better PassMark.

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

Pentium Gold G5620 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2018). That makes it the safer long-term bet.

Core i3-8121U vs Pentium Gold G5620 Technical Specifications

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

Core i3-8121U

The Core i3-8121U is manufactured by Intel. It was released in 5 May 2018 (7 years ago). It is based on the Coffee Lake-U (2018−2019) architecture. It features 2 cores and 4 threads. Base frequency is 2.2 GHz, with boost up to 3.2 GHz. L3 cache: 4 MB (total). L2 cache: 256K (per core). Built on 10 nm process technology. Socket: BGA1440. Thermal design power (TDP): 15 Watt. Memory support: DDR4. Passmark benchmark score: 4,271 points. Launch price was $69.

Pentium Gold G5620

The Pentium Gold G5620 is manufactured by Intel. It was released in 20 February 2019 (6 years ago). It is based on the Coffee Lake (2017−2019) architecture. It features 2 cores and 4 threads. Base frequency is 4 GHz, with boost up to 4 GHz. L3 cache: 4 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 54 Watt. Memory support: DDR4-2400. Passmark benchmark score: 4,251 points. Launch price was $93.

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Processing Power

Both the Core i3-8121U and Pentium Gold G5620 share an identical 2-core/4-thread configuration. Boost clocks reach 3.2 GHz on the Core i3-8121U versus 4 GHz on the Pentium Gold G5620 — a 22.2% clock advantage for the Pentium Gold G5620 (base: 2.2 GHz vs 4 GHz). The Core i3-8121U uses the Coffee Lake-U (2018−2019) architecture (10 nm), while the Pentium Gold G5620 uses Coffee Lake (2017−2019) (14 nm). In PassMark, the Core i3-8121U scores 4,271 against the Pentium Gold G5620's 4,251 — a 0.5% lead for the Core i3-8121U. Both processors carry 4 MB (total) of L3 cache.

Feature	Core i3-8121U	Pentium Gold G5620
Cores / Threads	2 / 4	2 / 4
Boost Clock	3.2 GHz	4 GHz+25%
Base Clock	2.2 GHz	4 GHz+82%
L3 Cache	4 MB (total)	4 MB (total)
L2 Cache	256K (per core)	256K (per core)
Process	10 nm-29%	14 nm
Architecture	Coffee Lake-U (2018−2019)	Coffee Lake (2017−2019)
PassMark	4,271	4,251
Geekbench 6 Single	1,178	—
Geekbench 6 Multi	2,250	—

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Memory & Platform

The Core i3-8121U uses the BGA1440 socket (PCIe 3.0), while the Pentium Gold G5620 uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i3-8121U	Pentium Gold G5620
Socket	BGA1440	LGA1151
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2400	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x, VT-d, EPT (Core i3-8121U) / not specified (Pentium Gold G5620). Primary use case: Core i3-8121U targets Productivity. Direct competitor: Core i3-8121U rivals Core i3-8130U.