Core i5-2500K vs Pentium Gold G6400

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 i5-2500K vs Pentium Gold G6400 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 i5-2500K vs Pentium Gold G6400: Pros, Cons & Final Verdict

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

Core i5-2500K

2011

Why buy it

✅+0.9% higher PassMark.
✅+50% larger total L3 cache (6 MB vs 4 MB).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with HD Graphics 3000, while Pentium Gold G6400 needs a discrete GPU.
✅Includes a boxed cooler (Yes), unlike Pentium Gold G6400.

Trade-offs

❌Worse for gaming: lower average FPS than Pentium Gold G6400 across 47 shared CPU benchmark tests.
❌Launch MSRP is still $225 MSRP, while Pentium Gold G6400 mostly shows up through inconsistent older-market listings.
❌63.8% higher power demand at 95W vs 58W.

Pentium Gold G6400

2020

Why buy it

✅Better for gaming: +3.6% higher average FPS across 47 shared CPU benchmark tests.
✅Draws 58W instead of 95W, a 37W reduction.

Trade-offs

❌Lower PassMark (4,106 vs 4,141).
❌Smaller total L3 cache (4 MB vs 6 MB).
❌No integrated graphics, while Core i5-2500K can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike Core i5-2500K.

Quick Answers

So, is Pentium Gold G6400 better than Core i5-2500K?

It depends on what you want from the system. For gaming, Pentium Gold G6400 is ahead with a 3.6% average FPS lead across 47 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i5-2500K pulls ahead with 0.9% better PassMark. Core i5-2500K also has the bigger cache pool with 50% larger total L3 cache (6 MB vs 4 MB).

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

For streaming, content creation, and heavier multitasking, Core i5-2500K is the stronger fit. You are getting 0.9% better PassMark, backed by 4 cores and 4 threads. It also has the larger cache pool with 50% larger total L3 cache (6 MB vs 4 MB).

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

Pentium Gold G6400 is still the much better call for a fresh build. Pentium Gold G6400 comes in at an unclear MSRP at unclear MSRP versus $225 MSRP, and it still gives you a 3.6% average FPS lead across 47 shared CPU game tests in our data. Core i5-2500K only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2011 platform. Even with 100.0% better value on paper (18.4 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1155.

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

Pentium Gold G6400 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2011). That makes it the safer long-term bet.

Core i5-2500K vs Pentium Gold G6400 Technical Specifications

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

Core i5-2500K

The Core i5-2500K is manufactured by Intel. It was released in 9 January 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 4 cores and 4 threads. Base frequency is 3.3 GHz, with boost up to 3.7 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 4,141 points. Launch price was $216.

Pentium Gold G6400

The Pentium Gold G6400 is manufactured by Intel. It was released in 2007-01-01. It is based on the Comet Lake (2020−2025) 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: LGA1200. Thermal design power (TDP): 58 Watt. Memory support: DDR4-2666. Passmark benchmark score: 4,106 points. Launch price was $69.

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Processing Power

The Core i5-2500K packs 4 cores / 4 threads, while the Pentium Gold G6400 offers 2 cores / 4 threads — the Core i5-2500K has 2 more cores. Boost clocks reach 3.7 GHz on the Core i5-2500K versus 4 GHz on the Pentium Gold G6400 — a 7.8% clock advantage for the Pentium Gold G6400 (base: 3.3 GHz vs 4 GHz). The Core i5-2500K uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Pentium Gold G6400 uses Comet Lake (2020−2025) (14 nm). In PassMark, the Core i5-2500K scores 4,141 against the Pentium Gold G6400's 4,106 — a 0.8% lead for the Core i5-2500K. L3 cache: 6 MB (total) on the Core i5-2500K vs 4 MB (total) on the Pentium Gold G6400.

Feature	Core i5-2500K	Pentium Gold G6400
Cores / Threads	4 / 4+100%	2 / 4
Boost Clock	3.7 GHz	4 GHz+8%
Base Clock	3.3 GHz	4 GHz+21%
L3 Cache	6 MB (total)+50%	4 MB (total)
L2 Cache	256K (per core)	256K (per core)
Process	32 nm	14 nm-56%
Architecture	Sandy Bridge (2011−2013)	Comet Lake (2020−2025)
PassMark	4,141	4,106
Cinebench R23 Multi	3,200	—
Geekbench 6 Single	684	—
Geekbench 6 Multi	2,032	—

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Memory & Platform

The Core i5-2500K uses the LGA1155 socket (PCIe 2.0), while the Pentium Gold G6400 uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i5-2500K	Pentium Gold G6400
Socket	LGA1155	LGA1200
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR3-1333	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x (Core i5-2500K) / not specified (Pentium Gold G6400). The Core i5-2500K includes integrated graphics (HD Graphics 3000), while the Pentium Gold G6400 requires a dedicated GPU. Primary use case: Core i5-2500K targets Gaming. Direct competitor: Core i5-2500K rivals FX-6300.