Celeron G1840T vs Core 2 Duo SU9400

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.

Celeron G1840T 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.

Celeron G1840T 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.

Celeron G1840T

2014

Why buy it

✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with HD Graphics (Haswell), while Core 2 Duo SU9400 needs a discrete GPU.

Trade-offs

❌Lower PassMark (1,576 vs 1,596).
❌Launch MSRP is still $42 MSRP, while Core 2 Duo SU9400 mostly shows up through inconsistent older-market listings.
❌1700% higher power demand at 54W vs 3W.

Core 2 Duo SU9400

2008

Why buy it

✅+1.3% higher PassMark.
✅Draws 3W instead of 54W, a 51W reduction.

Trade-offs

❌No integrated graphics, while Celeron G1840T can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Celeron G1840T better than Core 2 Duo SU9400?

It depends on what you want from the system. For gaming, Celeron G1840T is ahead with a 1.2% 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 1.3% 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 1.3% 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 $42 MSRP versus unclear MSRP, and it still gives you a 1.2% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Core 2 Duo SU9400 is still stronger for heavier multi-core work with 1.3% better PassMark. It is also 100.0% better value on MSRP (37.5 vs 0.0 PassMark/$), 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 2008). That makes it the safer long-term bet.

Celeron G1840T vs Core 2 Duo SU9400 Technical Specifications

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

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.

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 Celeron G1840T and Core 2 Duo SU9400 share an identical 2-core/2-thread configuration. Boost clocks reach 2.5 GHz on the Celeron G1840T versus 1.4 GHz on the Core 2 Duo SU9400 — a 56.4% clock advantage for the Celeron G1840T (base: 2.5 GHz vs 1.4 GHz). The Celeron G1840T uses the Haswell (2013−2015) architecture (22 nm), while the Core 2 Duo SU9400 uses Penryn (2008−2011) (45 nm). In PassMark, the Celeron G1840T scores 1,576 against the Core 2 Duo SU9400's 1,596 — a 1.3% lead for the Core 2 Duo SU9400. L3 cache: 3 MB (total) on the Celeron G1840T vs 3 MB L2 Cache on the Core 2 Duo SU9400.

Feature	Celeron G1840T	Core 2 Duo SU9400
Cores / Threads	2 / 2	2 / 2
Boost Clock	2.5 GHz+79%	1.4 GHz
Base Clock	2.5 GHz+79%	1.4 GHz
L3 Cache	3 MB (total)	3 MB L2 Cache
L2 Cache	256 kB (per core)	3 MB+1100%
Process	22 nm-51%	45 nm
Architecture	Haswell (2013−2015)	Penryn (2008−2011)
PassMark	1,576	1,596+1%

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Memory & Platform

The Celeron G1840T uses the LGA1150 socket (PCIe 3.0), while the Core 2 Duo SU9400 uses BGA956 (PCIe 1.1) — making them incompatible on the same motherboard.

Feature	Celeron G1840T	Core 2 Duo SU9400
Socket	LGA1150	BGA956
PCIe Generation	PCIe 3.0+173%	PCIe 1.1
Max RAM Speed	DDR3-1333	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	Yes	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x (Celeron G1840T) / not specified (Core 2 Duo SU9400). The Celeron G1840T includes integrated graphics (HD Graphics (Haswell)), while the Core 2 Duo SU9400 requires a dedicated GPU. Primary use case: Celeron G1840T targets Budget. Direct competitor: Celeron G1840T rivals Pentium G3240T.