Atom x5-Z8550 vs Pentium 977

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.

Atom x5-Z8550 vs Pentium 977 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.

Atom x5-Z8550 vs Pentium 977: Pros, Cons & Final Verdict

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

Atom x5-Z8550

2016

Why buy it

✅Integrated graphics onboard with Intel HD Graphics (Cherry Trail), while Pentium 977 needs a discrete GPU.

Trade-offs

❌Lower PassMark (1,143 vs 1,148).

Pentium 977

2012

Why buy it

✅+0.4% higher PassMark.

Trade-offs

❌Launch MSRP is still $134 MSRP, while Atom x5-Z8550 mostly shows up through inconsistent older-market listings.
❌No integrated graphics, while Atom x5-Z8550 can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Pentium 977 better than Atom x5-Z8550?

It depends on what you want from the system. For gaming, Atom x5-Z8550 is ahead with a 1.7% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Pentium 977 pulls ahead with 0.4% better PassMark.

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

For streaming, content creation, and heavier multitasking, Pentium 977 is the stronger fit. You are getting 0.4% better PassMark, backed by 2 cores and 2 threads.

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

Pentium 977 is the better buy right now. Pentium 977 comes in at an unclear MSRP at $134 MSRP versus unclear MSRP, and it still gives you 0.4% better PassMark. The compromise is that Atom x5-Z8550 is still the better pure gaming CPU with a 1.7% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (8.6 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Atom x5-Z8550 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2016 vs 2012). That makes it the safer long-term bet.

Atom x5-Z8550 vs Pentium 977 Technical Specifications

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

Atom x5-Z8550

The Atom x5-Z8550 is manufactured by Intel. It was released in 8 February 2016 (9 years ago). It is based on the Cherry Trail (2015−2016) architecture. It features 4 cores and 4 threads. Base frequency is 1.44 GHz, with boost up to 2.4 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 14 nm process technology. Socket: UTFCBGA1380. Memory support: DDR3. Passmark benchmark score: 1,143 points. Launch price was $69.

Pentium 977

The Pentium 977 is manufactured by Intel. It was released in 1 January 2012 (13 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 1.4 GHz, with boost up to 1.4 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: BGA1023. Thermal design power (TDP): 17 Watt. Memory support: DDR3. Passmark benchmark score: 1,148 points. Launch price was $134.

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Processing Power

The Atom x5-Z8550 packs 4 cores / 4 threads, while the Pentium 977 offers 2 cores / 2 threads — the Atom x5-Z8550 has 2 more cores. Boost clocks reach 2.4 GHz on the Atom x5-Z8550 versus 1.4 GHz on the Pentium 977 — a 52.6% clock advantage for the Atom x5-Z8550 (base: 1.44 GHz vs 1.4 GHz). The Atom x5-Z8550 uses the Cherry Trail (2015−2016) architecture (14 nm), while the Pentium 977 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Atom x5-Z8550 scores 1,143 against the Pentium 977's 1,148 — a 0.4% lead for the Pentium 977. L3 cache: 0 kB on the Atom x5-Z8550 vs 2 MB (total) on the Pentium 977.

Feature	Atom x5-Z8550	Pentium 977
Cores / Threads	4 / 4+100%	2 / 2
Boost Clock	2.4 GHz+71%	1.4 GHz
Base Clock	1.44 GHz+3%	1.4 GHz
L3 Cache	0 kB	2 MB (total)
L2 Cache	2 MB	256K (per core)+12700%
Process	14 nm-56%	32 nm
Architecture	Cherry Trail (2015−2016)	Sandy Bridge (2011−2013)
PassMark	1,143	1,148

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Memory & Platform

The Atom x5-Z8550 uses the UTFCBGA1380 socket (PCIe 3.0), while the Pentium 977 uses BGA1023 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Atom x5-Z8550	Pentium 977
Socket	UTFCBGA1380	BGA1023
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	LPDDR3-1600	—
Max RAM Capacity	8 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	2	—