A6-6400B vs Core 2 Duo SU9400

A6-6400B vs Core 2 Duo SU9400 Performance Spectrum

A6-6400B

2 / 2

1,573

0.0%

Ryzen Threadripper PRO 5945WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Core 2 Duo SU9400

2 / 2

1,596

+1.5%

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 Core 2 Duo SU9400 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 Core 2 Duo SU9400: 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

✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon HD 8470D, while Core 2 Duo SU9400 needs a discrete GPU.
✅Includes a boxed cooler (true), unlike Core 2 Duo SU9400.

Trade-offs

❌Lower PassMark (1,573 vs 1,596).
❌2066.7% higher power demand at 65W vs 3W.

Core 2 Duo SU9400

2008

Why buy it

✅+1.5% higher PassMark.
✅Draws 3W instead of 65W, a 62W reduction.

Trade-offs

❌No integrated graphics, while A6-6400B can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike A6-6400B.

Quick Answers

So, is Core 2 Duo SU9400 better than A6-6400B?

It depends on what you want from the system. For gaming, A6-6400B is ahead with a 0.7% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core 2 Duo SU9400 pulls ahead with 1.5% better PassMark.

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

For streaming, content creation, and heavier multitasking, Core 2 Duo SU9400 is the stronger fit. You are getting 1.5% better PassMark, backed by 2 cores and 2 threads.

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

Core 2 Duo SU9400 still makes the most sense overall. Core 2 Duo SU9400 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 1.5% better PassMark.

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

A6-6400B makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2013 vs 2008). That makes it the safer long-term bet.

A6-6400B vs Core 2 Duo SU9400 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.

Core 2 Duo SU9400

The Core 2 Duo SU9400 is manufactured by Intel. It was released in 20 August 2008 (17 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 1.4 GHz, with boost up to 1.4 GHz. L3 cache: 3 MB L2 Cache. L2 cache: 3 MB. Built on 45 nm process technology. Socket: BGA956. Thermal design power (TDP): 10 Watt. Passmark benchmark score: 1,596 points. Launch price was $262.

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Processing Power

Both the A6-6400B and Core 2 Duo SU9400 share an identical 2-core/2-thread configuration. Boost clocks reach 4.1 GHz on the A6-6400B versus 1.4 GHz on the Core 2 Duo SU9400 — a 98.2% clock advantage for the A6-6400B (base: 3.9 GHz vs 1.4 GHz). The A6-6400B uses the Richland (2013−2014) architecture (32 nm), while the Core 2 Duo SU9400 uses Penryn (2008−2011) (45 nm). In PassMark, the A6-6400B scores 1,573 against the Core 2 Duo SU9400's 1,596 — a 1.5% lead for the Core 2 Duo SU9400.

Feature	A6-6400B	Core 2 Duo SU9400
Cores / Threads	2 / 2	2 / 2
Boost Clock	4.1 GHz+193%	1.4 GHz
Base Clock	3.9 GHz+179%	1.4 GHz
L3 Cache	—	3 MB L2 Cache
L2 Cache	1 MB (total)	3 MB+200%
Process	32 nm-29%	45 nm
Architecture	Richland (2013−2014)	Penryn (2008−2011)
PassMark	1,573	1,596+1%

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Memory & Platform

The A6-6400B uses the FM2 socket (PCIe 3.0), while the Core 2 Duo SU9400 uses BGA956 (PCIe 1.1) — making them incompatible on the same motherboard.

Feature	A6-6400B	Core 2 Duo SU9400
Socket	FM2	BGA956
PCIe Generation	PCIe 3.0+173%	PCIe 1.1
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 (A6-6400B) / not specified (Core 2 Duo SU9400). The A6-6400B includes integrated graphics (Radeon HD 8470D), while the Core 2 Duo SU9400 requires a dedicated GPU. Direct competitor: A6-6400B rivals Pentium G3220.