Core i7-4578U vs Pentium Gold G6405T

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 i7-4578U vs Pentium Gold G6405T 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 i7-4578U vs Pentium Gold G6405T: Pros, Cons & Final Verdict

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

Core i7-4578U

2014

Why buy it

Trade-offs

❌Lower PassMark (3,075 vs 3,095).
❌1362.9% higher power demand at 512W vs 35W.

Pentium Gold G6405T

2021

Why buy it

✅+0.7% higher PassMark.
✅Draws 35W instead of 512W, a 477W reduction.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Quick Answers

So, is Pentium Gold G6405T better than Core i7-4578U?

Yes. Pentium Gold G6405T is the better all-around CPU here. It gives you a 1.7% average FPS lead across 50 shared CPU game tests in our data, 0.7% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

For gaming, this matchup is basically a tie in the data we have.

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

For streaming, content creation, and heavier multitasking, Pentium Gold G6405T is the stronger fit. You are getting 0.7% better PassMark, backed by 2 cores and 4 threads.

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

Pentium Gold G6405T still makes the most sense overall. Pentium Gold G6405T comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 1.7% average FPS lead across 50 shared CPU game tests in our data.

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

Pentium Gold G6405T makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2014) and more multi-core headroom with 2 cores / 4 threads instead of 2/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i7-4578U vs Pentium Gold G6405T Technical Specifications

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

Core i7-4578U

The Core i7-4578U is manufactured by Intel. It was released in 21 July 2014 (11 years ago). It is based on the Haswell (2013−2015) architecture. It features 2 cores and 4 threads. Base frequency is 3 GHz, with boost up to 3.5 GHz. L3 cache: 4 MB. L2 cache: 512 kB. Built on 22 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 28 Watt. Memory support: DDR3. Passmark benchmark score: 3,075 points. Launch price was $426.

Pentium Gold G6405T

The Pentium Gold G6405T is manufactured by Intel. It was released in 16 March 2021 (4 years ago). It is based on the Comet Lake-R (2021) architecture. It features 2 cores and 4 threads. Base frequency is 3.5 GHz, with boost up to 3.5 GHz. L3 cache: 4 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 35 Watt. Memory support: DDR4-2666. Passmark benchmark score: 3,095 points. Launch price was $64.

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Processing Power

Both the Core i7-4578U and Pentium Gold G6405T share an identical 2-core/4-thread configuration. Boost clocks reach 3.5 GHz on the Core i7-4578U versus 3.5 GHz on the Pentium Gold G6405T — identical boost frequencies (base: 3 GHz vs 3.5 GHz). The Core i7-4578U uses the Haswell (2013−2015) architecture (22 nm), while the Pentium Gold G6405T uses Comet Lake-R (2021) (14 nm). In PassMark, the Core i7-4578U scores 3,075 against the Pentium Gold G6405T's 3,095 — a 0.6% lead for the Pentium Gold G6405T. L3 cache: 4 MB on the Core i7-4578U vs 4 MB (total) on the Pentium Gold G6405T.

Feature	Core i7-4578U	Pentium Gold G6405T
Cores / Threads	2 / 4	2 / 4
Boost Clock	3.5 GHz	3.5 GHz
Base Clock	3 GHz	3.5 GHz+17%
L3 Cache	4 MB	4 MB (total)
L2 Cache	512 kB+100%	256 kB (per core)
Process	22 nm	14 nm-36%
Architecture	Haswell (2013−2015)	Comet Lake-R (2021)
PassMark	3,075	3,095

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Memory & Platform

The Core i7-4578U uses the FCBGA1168 socket (PCIe 3.0), while the Pentium Gold G6405T uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard.