Core i5-6400T 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 i5-6400T 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 i5-6400T 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 i5-6400T

2015

Why buy it

✅+50% larger total L3 cache (6 MB vs 4 MB).
✅Draws 1W instead of 54W, a 53W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with HD 530, while Pentium Gold G5620 needs a discrete GPU.
✅Includes a boxed cooler (Yes), unlike Pentium Gold G5620.

Trade-offs

❌Worse for gaming: lower average FPS than Pentium Gold G5620 across 50 shared CPU benchmark tests.
❌Lower PassMark (4,243 vs 4,251).
❌Launch MSRP is still $192 MSRP, while Pentium Gold G5620 mostly shows up through inconsistent older-market listings.

Pentium Gold G5620

2019

Why buy it

✅Better for gaming: +6.0% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Smaller total L3 cache (4 MB vs 6 MB).
❌5300% higher power demand at 54W vs 1W.
❌No integrated graphics, while Core i5-6400T can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike Core i5-6400T.

Quick Answers

So, is Pentium Gold G5620 better than Core i5-6400T?

Yes. Pentium Gold G5620 is the better all-around CPU here. It gives you a 6.0% average FPS lead across 50 shared CPU game tests in our data, 0.2% better PassMark, 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, Pentium Gold G5620 is the better pick. According to our tests, it delivers 6.0% 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, Pentium Gold G5620 is the stronger fit. You are getting 0.2% better PassMark, backed by 2 cores and 4 threads.

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

Pentium Gold G5620 is still the much better call for a fresh build. Pentium Gold G5620 comes in at an unclear MSRP at unclear MSRP versus $192 MSRP, and it still gives you a 6.0% average FPS lead across 50 shared CPU game tests in our data. Core i5-6400T only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2015 platform. Even with 100.0% better value on paper (22.1 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1151.

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 2015) and more multi-core headroom with 2 cores / 4 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i5-6400T vs Pentium Gold G5620 Technical Specifications

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

Core i5-6400T

The Core i5-6400T is manufactured by Intel. It was released in 1 September 2015 (10 years ago). It is based on the Skylake (2015−2016) architecture. It features 4 cores and 4 threads. Base frequency is 2.2 GHz, with boost up to 2.8 GHz. L3 cache: 6 MB. L2 cache: 1 MB. Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 35 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 4,243 points. Launch price was $192.

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

The Core i5-6400T packs 4 cores / 4 threads, while the Pentium Gold G5620 offers 2 cores / 4 threads — the Core i5-6400T has 2 more cores. Boost clocks reach 2.8 GHz on the Core i5-6400T versus 4 GHz on the Pentium Gold G5620 — a 35.3% clock advantage for the Pentium Gold G5620 (base: 2.2 GHz vs 4 GHz). The Core i5-6400T uses the Skylake (2015−2016) architecture (14 nm), while the Pentium Gold G5620 uses Coffee Lake (2017−2019) (14 nm). In PassMark, the Core i5-6400T scores 4,243 against the Pentium Gold G5620's 4,251 — a 0.2% lead for the Pentium Gold G5620. L3 cache: 6 MB on the Core i5-6400T vs 4 MB (total) on the Pentium Gold G5620.

Feature	Core i5-6400T	Pentium Gold G5620
Cores / Threads	4 / 4+100%	2 / 4
Boost Clock	2.8 GHz	4 GHz+43%
Base Clock	2.2 GHz	4 GHz+82%
L3 Cache	6 MB+50%	4 MB (total)
L2 Cache	1 MB	256K (per core)+25500%
Process	14 nm	14 nm
Architecture	Skylake (2015−2016)	Coffee Lake (2017−2019)
PassMark	4,243	4,251
Cinebench R23 Multi	2,200	—
Geekbench 6 Single	950	—
Geekbench 6 Multi	2,600	—

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Memory & Platform

Both processors use the LGA1151 socket with PCIe 3.0.

Feature	Core i5-6400T	Pentium Gold G5620
Socket	LGA1151	LGA1151
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2133	—
Max RAM Capacity	64 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x, VT-d (Core i5-6400T) / not specified (Pentium Gold G5620). The Core i5-6400T includes integrated graphics (HD 530), while the Pentium Gold G5620 requires a dedicated GPU. Primary use case: Core i5-6400T targets Budget. Direct competitor: Core i5-6400T rivals Core i3-7100.