Pentium Gold G5420 vs Xeon L5638

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.

Pentium Gold G5420 vs Xeon L5638 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.

Pentium Gold G5420 vs Xeon L5638: Pros, Cons & Final Verdict

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

Pentium Gold G5420

2019

Why buy it

✅Draws 54W instead of 60W, a 6W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel UHD Graphics 610, while Xeon L5638 needs a discrete GPU.
✅Includes a boxed cooler (Yes), unlike Xeon L5638.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon L5638 across 50 shared CPU benchmark tests.
❌Lower PassMark (3,700 vs 3,707).
❌Smaller total L3 cache (4 MB vs 12 MB).
❌Less compelling for workstation-style loads than Xeon L5638, which brings 6 cores / 12 threads.

Xeon L5638

2010

Why buy it

✅Better for gaming: +10.3% higher average FPS across 50 shared CPU benchmark tests.
✅+200% larger total L3 cache (12 MB vs 4 MB).
✅Better for workstations and heavier parallel workloads: 6 cores / 12 threads.

Trade-offs

❌No integrated graphics, while Pentium Gold G5420 can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike Pentium Gold G5420.

Quick Answers

So, is Xeon L5638 better than Pentium Gold G5420?

Not really, because they are built for different jobs. Xeon L5638 makes more sense for workstation-style multi-core throughput, while Pentium Gold G5420 is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Xeon L5638 is the better pick. According to our tests, it delivers 10.3% 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, Xeon L5638 is the stronger fit. You are getting 0.2% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 200% larger total L3 cache (12 MB vs 4 MB).

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

Xeon L5638 still makes the most sense overall. Xeon L5638 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 10.3% average FPS lead across 50 shared CPU game tests in our data.

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

Pentium Gold G5420 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2010). That makes it the safer long-term bet.

Pentium Gold G5420 vs Xeon L5638 Technical Specifications

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

Pentium Gold G5420

The Pentium Gold G5420 is manufactured by Intel. It was released in 23 April 2019 (6 years ago). It is based on the Coffee Lake (2017−2019) architecture. It features 2 cores and 4 threads. Base frequency is 3.8 GHz, with boost up to 3.8 GHz. L3 cache: 4 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 54 Watt. Memory support: DDR4-2400. Passmark benchmark score: 3,700 points. Launch price was $64.

Xeon L5638

The Xeon L5638 is manufactured by Intel. It was released in 16 March 2010 (15 years ago). It is based on the Westmere-EP (2010−2011) architecture. It features 6 cores and 12 threads. Base frequency is 2 GHz, with boost up to 2.4 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 60 Watt. Memory support: DDR3. Passmark benchmark score: 3,707 points. Launch price was $90.

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Processing Power

The Pentium Gold G5420 packs 2 cores / 4 threads, while the Xeon L5638 offers 6 cores / 12 threads — the Xeon L5638 has 4 more cores. Boost clocks reach 3.8 GHz on the Pentium Gold G5420 versus 2.4 GHz on the Xeon L5638 — a 45.2% clock advantage for the Pentium Gold G5420 (base: 3.8 GHz vs 2 GHz). The Pentium Gold G5420 uses the Coffee Lake (2017−2019) architecture (14 nm), while the Xeon L5638 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Pentium Gold G5420 scores 3,700 against the Xeon L5638's 3,707 — a 0.2% lead for the Xeon L5638. L3 cache: 4 MB on the Pentium Gold G5420 vs 12 MB (total) on the Xeon L5638.

Feature	Pentium Gold G5420	Xeon L5638
Cores / Threads	2 / 4	6 / 12+200%
Boost Clock	3.8 GHz+58%	2.4 GHz
Base Clock	3.8 GHz+90%	2 GHz
L3 Cache	4 MB	12 MB (total)+200%
L2 Cache	512 kB+100%	256 kB (per core)
Process	14 nm-56%	32 nm
Architecture	Coffee Lake (2017−2019)	Westmere-EP (2010−2011)
PassMark	3,700	3,707
Geekbench 6 Single	764	—
Geekbench 6 Multi	1,515	—

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Memory & Platform

The Pentium Gold G5420 uses the LGA1151 socket (PCIe 3.0), while the Xeon L5638 uses LGA1366 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Pentium Gold G5420	Xeon L5638
Socket	LGA1151	LGA1366
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	DDR4-2400	—
Max RAM Capacity	64 GB	—
RAM Channels	2	—
ECC Support	Yes	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x / VT-d / EPT (Pentium Gold G5420) / not specified (Xeon L5638). The Pentium Gold G5420 includes integrated graphics (Intel UHD Graphics 610), while the Xeon L5638 requires a dedicated GPU. Primary use case: Pentium Gold G5420 targets Office.