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 B800 vs Celeron G3900T 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 B800 vs Celeron G3900T: Pros, Cons & Final Verdict

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

Celeron B800

2011

Why buy it

✅+0.5% higher PassMark.

Trade-offs

❌Lower PassMark per dollar, at 23.9 vs 45.2 PassMark/$ ($80 MSRP vs $42 MSRP).

Celeron G3900T

2015

Why buy it

✅Costs $38 less on MSRP ($42 MSRP vs $80 MSRP).
✅Delivers 89.5% more PassMark for each dollar spent, at 45.2 vs 23.9 PassMark/$ ($42 MSRP vs $80 MSRP).

Trade-offs

❌Lower PassMark (1,900 vs 1,910).

Quick Answers

So, is Celeron G3900T better than Celeron B800?

It depends on what you want from the system. For gaming, Celeron G3900T is ahead with a 0.4% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Celeron B800 pulls ahead with 0.5% better PassMark.

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

For streaming, content creation, and heavier multitasking, Celeron B800 is the stronger fit. You are getting 0.5% better PassMark, backed by 2 cores and 2 threads.

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

Celeron G3900T is the better buy right now. Celeron G3900T comes in $38 cheaper on MSRP at $42 MSRP versus $80 MSRP, and it still gives you a 0.4% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Celeron B800 is still stronger for heavier multi-core work with 0.5% better PassMark. It is also 89.5% better value on MSRP (45.2 vs 23.9 PassMark/$), 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 G3900T makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2015 vs 2011). That makes it the safer long-term bet.

Celeron B800 vs Celeron G3900T Technical Specifications

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

Celeron B800

The Celeron B800 is manufactured by Intel. It was released in 19 June 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 1.5 GHz, with boost up to 1.5 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: PGA988. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,910 points. Launch price was $80.

Celeron G3900T

The Celeron G3900T is manufactured by Intel. It was released in 2007-01-01. It is based on the Skylake (2015−2016) architecture. It features 2 cores and 2 threads. Base frequency is 2.6 GHz, with boost up to 2.6 GHz. L3 cache: 2 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 35 Watt. Memory support: DDR4-1866/2133, DDR3L-1333/1600. Passmark benchmark score: 1,900 points. Launch price was $69.

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Processing Power

Both the Celeron B800 and Celeron G3900T share an identical 2-core/2-thread configuration. Boost clocks reach 1.5 GHz on the Celeron B800 versus 2.6 GHz on the Celeron G3900T — a 53.7% clock advantage for the Celeron G3900T (base: 1.5 GHz vs 2.6 GHz). The Celeron B800 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Celeron G3900T uses Skylake (2015−2016) (14 nm). In PassMark, the Celeron B800 scores 1,910 against the Celeron G3900T's 1,900 — a 0.5% lead for the Celeron B800. L3 cache: 2 MB (total) on the Celeron B800 vs 2 MB on the Celeron G3900T.

Feature	Celeron B800	Celeron G3900T
Cores / Threads	2 / 2	2 / 2
Boost Clock	1.5 GHz	2.6 GHz+73%
Base Clock	1.5 GHz	2.6 GHz+73%
L3 Cache	2 MB (total)	2 MB
L2 Cache	256K (per core)	512 kB+100%
Process	32 nm	14 nm-56%
Architecture	Sandy Bridge (2011−2013)	Skylake (2015−2016)
PassMark	1,910	1,900
Geekbench 6 Single	—	514
Geekbench 6 Multi	—	903

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Memory & Platform

The Celeron B800 uses the PGA988 socket (PCIe 2.0), while the Celeron G3900T uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Celeron B800 versus DDR4-2133 on the Celeron G3900T — the Celeron G3900T supports 60% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron G3900T supports up to 64 GB of RAM compared to 16 GB — 300% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: HM65,HM67,QM67,QM77 (Celeron B800) and H110,B150,H170,Z170 (Celeron G3900T).

Feature	Celeron B800	Celeron G3900T
Socket	PGA988	LGA1151
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR3-1333	DDR4-2133+60%
Max RAM Capacity	16 GB	64 GB+300%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	16	16

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Advanced Features

Neither processor supports overclocking. Both support VT-x virtualization. Both include integrated graphics — HD Graphics (Sandy Bridge) (Celeron B800) and HD Graphics 510 (Celeron G3900T) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron B800 targets Budget, Celeron G3900T targets Budget. Direct competitor: Celeron B800 rivals Pentium 967; Celeron G3900T rivals Pentium G4400T.

Feature	Celeron B800	Celeron G3900T
Integrated GPU	Yes	Yes
IGPU Model	HD Graphics (Sandy Bridge)	HD Graphics 510
Unlocked	No	No
AVX-512	No	No
Virtualization	VT-x	VT-x
Target Use	Budget	Budget

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Value Analysis

At launch, the Celeron B800 was priced at $80, while the Celeron G3900T came in at $42. On launch pricing ($80 vs $42), Celeron G3900T was $38 cheaper. In terms of value on MSRP (PassMark points per dollar), the Celeron B800 delivers 23.9 pts/$ vs 45.2 pts/$ for the Celeron G3900T — making the Celeron G3900T the 61.8% better value option.

Feature	Celeron B800	Celeron G3900T
MSRP	$80	$42-48%
Performance per Dollar	23.9	45.2+89%
Release Date	2011	2015

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