Celeron B800 vs Core M-5Y31

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 Core M-5Y31 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 Core M-5Y31: 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

✅+0.3% higher PassMark.
✅Costs $201 less on MSRP ($80 MSRP vs $281 MSRP).
✅Delivers 252.2% more PassMark for each dollar spent, at 23.9 vs 6.8 PassMark/$ ($80 MSRP vs $281 MSRP).
✅Draws 35W instead of 512W, a 477W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Smaller total L3 cache (2 MB vs 4 MB).

Core M-5Y31

2014

Why buy it

✅+100% larger total L3 cache (4 MB vs 2 MB).

Trade-offs

❌Lower PassMark (1,905 vs 1,910).
❌Lower PassMark per dollar, at 6.8 vs 23.9 PassMark/$ ($281 MSRP vs $80 MSRP).
❌1362.9% higher power demand at 512W vs 35W.
❌No integrated graphics, while Celeron B800 can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Celeron B800 better than Core M-5Y31?

It depends on what you want from the system. For gaming, Core M-5Y31 is ahead with a 1.3% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Celeron B800 pulls ahead with 0.3% better PassMark. Core M-5Y31 also has the bigger cache pool with 100% larger total L3 cache (4 MB vs 2 MB).

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 0.3% better PassMark, backed by 2 cores and 2 threads.

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

Celeron B800 is the better buy right now. Celeron B800 comes in $201 cheaper on MSRP at $80 MSRP versus $281 MSRP, and it still gives you 0.3% better PassMark. The compromise is that Core M-5Y31 is still the better pure gaming CPU with a 1.3% average FPS lead across 50 shared CPU game tests in our data. It is also 252.2% better value on MSRP (23.9 vs 6.8 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core M-5Y31 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2011) and 100% larger total L3 cache (4 MB vs 2 MB). That makes it the safer long-term bet.

Celeron B800 vs Core M-5Y31 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.

Core M-5Y31

The Core M-5Y31 is manufactured by Intel. It was released in 27 October 2014 (11 years ago). It is based on the Broadwell-Y (2014) architecture. It features 2 cores and 4 threads. Base frequency is 0.9 GHz, with boost up to 2.4 GHz. L3 cache: 4 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1234. Thermal design power (TDP): 4.5 Watt. Memory support: DDR3. Passmark benchmark score: 1,905 points. Launch price was $69.

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Processing Power

The Celeron B800 packs 2 cores / 2 threads, matching the Core M-5Y31's 2 cores. Boost clocks reach 1.5 GHz on the Celeron B800 versus 2.4 GHz on the Core M-5Y31 — a 46.2% clock advantage for the Core M-5Y31 (base: 1.5 GHz vs 0.9 GHz). The Celeron B800 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Core M-5Y31 uses Broadwell-Y (2014) (14 nm). In PassMark, the Celeron B800 scores 1,910 against the Core M-5Y31's 1,905 — a 0.3% lead for the Celeron B800. L3 cache: 2 MB (total) on the Celeron B800 vs 4 MB (total) on the Core M-5Y31.

Feature	Celeron B800	Core M-5Y31
Cores / Threads	2 / 2	2 / 4
Boost Clock	1.5 GHz	2.4 GHz+60%
Base Clock	1.5 GHz+67%	0.9 GHz
L3 Cache	2 MB (total)	4 MB (total)+100%
L2 Cache	256K (per core)	256K (per core)
Process	32 nm	14 nm-56%
Architecture	Sandy Bridge (2011−2013)	Broadwell-Y (2014)
PassMark	1,910	1,905

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Memory & Platform

The Celeron B800 uses the PGA988 socket (PCIe 2.0), while the Core M-5Y31 uses FCBGA1234 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Celeron B800	Core M-5Y31
Socket	PGA988	FCBGA1234
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR3-1333	—
Max RAM Capacity	16 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x (Celeron B800) / not specified (Core M-5Y31). The Celeron B800 includes integrated graphics (HD Graphics (Sandy Bridge)), while the Core M-5Y31 requires a dedicated GPU. Primary use case: Celeron B800 targets Budget. Direct competitor: Celeron B800 rivals Pentium 967.

Feature	Celeron B800	Core M-5Y31
Integrated GPU	Yes	—
IGPU Model	HD Graphics (Sandy Bridge)	—
Unlocked	No	—
AVX-512	No	—
Virtualization	VT-x	—
Target Use	Budget	—

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Value Analysis

At launch, the Celeron B800 was priced at $80, while the Core M-5Y31 came in at $281. On launch pricing ($80 vs $281), Celeron B800 was $201 cheaper. In terms of value on MSRP (PassMark points per dollar), the Celeron B800 delivers 23.9 pts/$ vs 6.8 pts/$ for the Core M-5Y31 — making the Celeron B800 the 111.5% better value option.

Feature	Celeron B800	Core M-5Y31
MSRP	$80-72%	$281
Performance per Dollar	23.9+251%	6.8
Release Date	2011	2014

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