A6-6400K vs Core i3-2100T

A6-6400K vs Core i3-2100T Performance Spectrum

A6-6400K

2 / 2

1,511

0.0%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Core i3-2100T

2 / 4

1,531

+1.3%

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.

A6-6400K vs Core i3-2100T 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.

A6-6400K vs Core i3-2100T: Pros, Cons & Final Verdict

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

A6-6400K

2013

Why buy it

✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon HD 8470D, while Core i3-2100T needs a discrete GPU.
✅Includes a boxed cooler (true), unlike Core i3-2100T.

Trade-offs

❌Lower PassMark (1,511 vs 1,531).
❌85.7% higher power demand at 65W vs 35W.

Core i3-2100T

2011

Why buy it

✅+1.3% higher PassMark.
✅Draws 35W instead of 65W, a 30W reduction.

Trade-offs

❌Launch MSRP is still $127 MSRP, while A6-6400K mostly shows up through inconsistent older-market listings.
❌No integrated graphics, while A6-6400K can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike A6-6400K.

Quick Answers

So, is Core i3-2100T better than A6-6400K?

It depends on what you want from the system. For gaming, A6-6400K is ahead with a 2.4% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i3-2100T pulls ahead with 1.3% better PassMark.

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

For streaming, content creation, and heavier multitasking, Core i3-2100T is the stronger fit. You are getting 1.3% better PassMark, backed by 2 cores and 4 threads.

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

Core i3-2100T is the better buy right now. Core i3-2100T comes in at an unclear MSRP at $127 MSRP versus unclear MSRP, and it still gives you 1.3% better PassMark. The compromise is that A6-6400K is still the better pure gaming CPU with a 2.4% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (12.1 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

A6-6400K makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2013 vs 2011). That makes it the safer long-term bet.

A6-6400K vs Core i3-2100T Technical Specifications

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

A6-6400K

The A6-6400K 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. L3 cache: 0 kB. L2 cache: 1024 kB. Built on 32 nm process technology. Socket: FM2. Thermal design power (TDP): 65 Watt. Memory support: DDR3-1866. Passmark benchmark score: 1,511 points. Launch price was $70.

Core i3-2100T

The Core i3-2100T is manufactured by Intel. It was released in 20 February 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 4 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 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,531 points. Launch price was $180.

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Processing Power

The A6-6400K packs 2 cores / 2 threads, matching the Core i3-2100T's 2 cores. Boost clocks reach 4.1 GHz on the A6-6400K versus 2.5 GHz on the Core i3-2100T — a 48.5% clock advantage for the A6-6400K (base: 3.9 GHz vs 2.5 GHz). The A6-6400K uses the Richland (2013−2014) architecture (32 nm), while the Core i3-2100T uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the A6-6400K scores 1,511 against the Core i3-2100T's 1,531 — a 1.3% lead for the Core i3-2100T. L3 cache: 0 kB on the A6-6400K vs 3 MB (total) on the Core i3-2100T.

Feature	A6-6400K	Core i3-2100T
Cores / Threads	2 / 2	2 / 4
Boost Clock	4.1 GHz+64%	2.5 GHz
Base Clock	3.9 GHz+56%	2.5 GHz
L3 Cache	0 kB	3 MB (total)
L2 Cache	1024 kB+300%	256 kB (per core)
Process	32 nm	32 nm
Architecture	Richland (2013−2014)	Sandy Bridge (2011−2013)
PassMark	1,511	1,531+1%

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Memory & Platform

The A6-6400K uses the FM2 socket (PCIe 3.0), while the Core i3-2100T uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	A6-6400K	Core i3-2100T
Socket	FM2	LGA1155
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	1866	—
Max RAM Capacity	32	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: true (A6-6400K) / not specified (Core i3-2100T). The A6-6400K includes integrated graphics (Radeon HD 8470D), while the Core i3-2100T requires a dedicated GPU. Direct competitor: A6-6400K rivals Pentium G3258.