A6-6400B vs Celeron G1840T

A6-6400B vs Celeron G1840T Performance Spectrum

A6-6400B

2 / 2

1,573

0.0%

Ryzen Threadripper PRO 5945WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Celeron G1840T

2 / 2

1,576

+0.2%

About PassMark

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.

A6-6400B vs Celeron G1840T 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.

A6-6400B vs Celeron G1840T: Pros, Cons & Final Verdict

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

A6-6400B

2013

Why buy it

✅Includes a boxed cooler (true), unlike Celeron G1840T.

Trade-offs

❌Lower PassMark (1,573 vs 1,576).
❌20.4% higher power demand at 65W vs 54W.

Celeron G1840T

2014

Why buy it

✅+0.2% higher PassMark.
✅Draws 54W instead of 65W, a 11W reduction.

Trade-offs

❌Launch MSRP is still $42 MSRP, while A6-6400B mostly shows up through inconsistent older-market listings.
❌No boxed cooler included, unlike A6-6400B.

Quick Answers

So, is Celeron G1840T better than A6-6400B?

It depends on what you want from the system. For gaming, A6-6400B is ahead with a 1.9% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Celeron G1840T pulls ahead with 0.2% better PassMark.

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

For streaming, content creation, and heavier multitasking, Celeron G1840T is the stronger fit. You are getting 0.2% better PassMark, backed by 2 cores and 2 threads.

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

Celeron G1840T is the better buy right now. Celeron G1840T comes in at an unclear MSRP at $42 MSRP versus unclear MSRP, and it still gives you 0.2% better PassMark. The compromise is that A6-6400B is still the better pure gaming CPU with a 1.9% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (37.5 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Celeron G1840T makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2013) and more multi-core headroom with 2 cores / 2 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

A6-6400B vs Celeron G1840T Technical Specifications

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

A6-6400B

The A6-6400B is manufactured by AMD. It was released in 2014-01-01. It is based on the Richland (2013−2014) architecture. It features 2 cores and 2 threads. Base frequency is 3.9 GHz, with boost up to 4.1 GHz. L2 cache: 1 MB (total). Built on 32 nm process technology. Socket: FM2. Thermal design power (TDP): 65 Watt. Memory support: DDR3-1866. Passmark benchmark score: 1,573 points. Launch price was $70.

Celeron G1840T

The Celeron G1840T is manufactured by Intel. It was released in 2007-01-01. It is based on the Haswell (2013−2015) architecture. It features 2 cores and 2 threads. Base frequency is 2.5 GHz, with boost up to 2.5 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 22 nm process technology. Socket: LGA1150. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,576 points. Launch price was $69.

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Processing Power

Both the A6-6400B and Celeron G1840T share an identical 2-core/2-thread configuration. Boost clocks reach 4.1 GHz on the A6-6400B versus 2.5 GHz on the Celeron G1840T — a 48.5% clock advantage for the A6-6400B (base: 3.9 GHz vs 2.5 GHz). The A6-6400B uses the Richland (2013−2014) architecture (32 nm), while the Celeron G1840T uses Haswell (2013−2015) (22 nm). In PassMark, the A6-6400B scores 1,573 against the Celeron G1840T's 1,576 — a 0.2% lead for the Celeron G1840T.

Feature	A6-6400B	Celeron G1840T
Cores / Threads	2 / 2	2 / 2
Boost Clock	4.1 GHz+64%	2.5 GHz
Base Clock	3.9 GHz+56%	2.5 GHz
L3 Cache	—	3 MB (total)
L2 Cache	1 MB (total)+300%	256 kB (per core)
Process	32 nm	22 nm-31%
Architecture	Richland (2013−2014)	Haswell (2013−2015)
PassMark	1,573	1,576

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Memory & Platform

The A6-6400B uses the FM2 socket (PCIe 3.0), while the Celeron G1840T uses LGA1150 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 1866 on the A6-6400B versus DDR3-1333 on the Celeron G1840T — the A6-6400B supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 32 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: FM2 (A6-6400B) and H81,B85,H87,Z87,H97,Z97 (Celeron G1840T).

Feature	A6-6400B	Celeron G1840T
Socket	FM2	LGA1150
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	1866+40%	DDR3-1333
Max RAM Capacity	32 GB	32 GB
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	16	16

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Advanced Features

Neither processor supports overclocking. Virtualization support: true (A6-6400B) vs VT-x (Celeron G1840T). Both include integrated graphics — Radeon HD 8470D (A6-6400B) and HD Graphics (Haswell) (Celeron G1840T) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron G1840T targets Budget. Direct competitor: A6-6400B rivals Pentium G3220; Celeron G1840T rivals Pentium G3240T.