Atom Z550 vs Sempron 3100+

Atom Z550

1 Cores2 Thrd2.4 WWMax: 2 GHz2009

Sempron 3100+

1 Cores1 Thrd62 WWMax: 1.8 GHz2001

Performance Spectrum - CPU

Atom Z550

1 / 2

375

+0.8%

372

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

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.

Value Upgrade Path

This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money. The Atom Z550 is positioned at rank 592 and the Sempron 3100+ is on rank 1068, so the Atom Z550 offers better cost-efficiency for playing games.

MSRP is the manufacturer's suggested retail price.•
Avg price is the current average price collected from markets across the web.

Performance Per Dollar Atom Z550

#184

Core Ultra 7 266V

MSRP: $520|Avg: $520

99%

#580

Atom x5-Z8300

MSRP: $20|Avg: N/A

782%

#581

Atom Z3735G

MSRP: $17|Avg: N/A

771%

#582

Core i5-480M

MSRP: $81|Avg: $77

708%

#583

Core i5-460M

MSRP: $80|Avg: $129

705%

#584

Core i5-2540M

MSRP: $266|Avg: $10

698%

#586

Core i5-450M

MSRP: $32|Avg: $31

674%

#587

Core i3-380M

MSRP: $49|Avg: $25

646%

#588

Core i5-430M

MSRP: N/A|Avg: $33

645%

#589

Core 2 Duo T6600

MSRP: N/A|Avg: $4

628%

#592

Atom Z550

MSRP: N/A|Avg: N/A

100%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Sempron 3100+

Ryzen 9 7950X

MSRP: $194|Avg: $20

54496%

Core i9-10900T

MSRP: $120|Avg: $5

51493%

Ryzen 3 PRO 4355GE

MSRP: $423|Avg: $5

37388%

Ryzen Threadripper 3960X

MSRP: $1399|Avg: $85

11263%

Ryzen 9 9950X

MSRP: $649|Avg: $129

8922%

Ryzen 5 8400F

MSRP: $303|Avg: $55

7805%

Ryzen 7 PRO 2700

MSRP: $299|Avg: $60

4470%

Ryzen 5 2600X

MSRP: $229|Avg: $55

4412%

Ryzen 3 PRO 5350G

MSRP: $150|Avg: $60

4017%

#10

Core Ultra 5 245KF

MSRP: $294|Avg: $189

4017%

#11

Ryzen 5 5500

MSRP: $159|Avg: $85

3972%

#12

Ryzen 5 3600

MSRP: $199|Avg: $80

3865%

#13

Core i3-9100E

MSRP: $202|Avg: $30

3811%

#14

Core Ultra 5 245K

MSRP: $319|Avg: $200

3795%

#15

Core i3-8300T

MSRP: $138|Avg: $25

3761%

#1068

Sempron 3100+

MSRP: $65|Avg: $15

100%

#1069

Athlon II X4 635

MSRP: $400|Avg: $250

98%

#1070

Core 2 Duo E6750

MSRP: $183|Avg: $15

98%

#1071

Core i7-940

MSRP: $562|Avg: $90

94%

#1072

Celeron 2.40

MSRP: $69|Avg: $13

87%

#1073

Sempron 2800+

MSRP: $65|Avg: $29

86%

#1074

Athlon 64 3100+

MSRP: $100|Avg: $15

83%

#1075

Sempron 3600+

MSRP: $105|Avg: $20

81%

#1076

Celeron 2.80

MSRP: $100|Avg: $15

75%

#1077

Athlon 64 X2 6000+

MSRP: $450|Avg: $20

71%

#1078

Athlon 64 3600+

MSRP: $149|Avg: $15

70%

#1079

Core 2 Quad Q6700

MSRP: $530|Avg: $50

69%

#1080

Athlon 64 2600+

MSRP: $100|Avg: $5

69%

#1081

Celeron 2.20

MSRP: $79|Avg: $15

67%

#1082

Athlon 64 X2 5200+

MSRP: $420|Avg: $15

63%

#1083

Athlon 64 X2 4000+

MSRP: $328|Avg: $10

63%

Based on actual market prices and performance synthetic scores.

Performance Comparison

About PassMark

🏆 Chipversus Verdict

🚀 Performance Leadership

Generational Difference: This comparison involves processors from different technological eras. The Atom Z550 (2009) utilizes 45 nm technology and unknown, providing a fundamental performance advantage.

Insight	Atom Z550	Sempron 3100+
Gaming	✅ Superior gaming performance	❌ Lower gaming performance
Workstation	✅ Better multi-core power	❌ Weaker in multi-core tasks
Price	✅ More affordable ($0)	⚠️ Higher cost ($15)
Longevity	🛑 Legacy (Silverthorne (2008−2010) / 45 nm)	🛑 Legacy (Palermo (2001−2005) / 130 nm)

💎 Value Proposition

The Sempron 3100+ (2001) relies on 130 nm technology and older memory, placing it in a different performance category relative to modern standards.

Insight	Atom Z550	Sempron 3100+
Cost Efficiency	❌ Lower cost efficiency	❌ Lower cost efficiency
Upfront Cost	✅ More affordable ($0)	⚠️ Higher cost ($15)

Performance Check

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Atom Z550 Benchmark Check

Sempron 3100+ Benchmark Check

Technical Specifications

Side-by-side comparison of Atom Z550 and Sempron 3100+

Atom Z550

The Atom Z550 is manufactured by Intel. It was released in 8 April 2009 (16 years ago). It is based on the Silverthorne (2008−2010) architecture. It features 1 cores and 2 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: PBGA441. Thermal design power (TDP): 2.4 Watt. Memory support: unknown. Passmark benchmark score: 375 points. Launch price was $69.

Sempron 3100+

The Sempron 3100+ is manufactured by AMD. It was released in Janeiro 2001 (24 years ago). It is based on the Palermo (2001−2005) architecture. It features 1 cores and 1 threads. Max frequency: 1.8 GHz. L3 cache: 0 kB. L2 cache: 256 kB. Built on 130 nm process technology. Socket: 754. Thermal design power (TDP): 62 Watt. Passmark benchmark score: 372 points. Launch price was $60.

⚡

Processing Power

The Atom Z550 packs 1 cores / 2 threads, matching the Sempron 3100+'s 1 cores. Boost clocks reach 2 GHz on the Atom Z550 versus 1.8 GHz on the Sempron 3100+ — a 10.5% clock advantage for the Atom Z550. The Atom Z550 uses the Silverthorne (2008−2010) architecture (45 nm), while the Sempron 3100+ uses Palermo (2001−2005) (130 nm). In PassMark, the Atom Z550 scores 375 against the Sempron 3100+'s 372 — a 0.8% lead for the Atom Z550. Both processors carry 0 kB of L3 cache.

Feature	Atom Z550	Sempron 3100+
Cores / Threads	1 / 2	1 / 1
Boost Clock	2 GHz+11%	1.8 GHz
Base Clock	2 GHz	—
L3 Cache	0 kB	0 kB
L2 Cache	512 kB (per core)+100%	256 kB
Process	45 nm-65%	130 nm
Architecture	Silverthorne (2008−2010)	Palermo (2001−2005)
PassMark	375	372

🧠

Memory & Platform

The Atom Z550 uses the PBGA441 socket (PCIe 2.0), while the Sempron 3100+ uses 754 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-533 on the Atom Z550 versus DDR 400 MHz on the Sempron 3100+ — the Sempron 3100+ supports 198% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Sempron 3100+ supports up to 3 GB of RAM compared to 2 GB — 40% more capacity for professional workloads. Both feature 1-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: Intel US15W (Atom Z550) and nForce3,VIA K8T800 (Sempron 3100+).

Feature	Atom Z550	Sempron 3100+
Socket	PBGA441	754
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR2-533	DDR 400 MHz+19900%
Max RAM Capacity	2 GB	3 GB+50%
RAM Channels	1	1
ECC Support	❌	❌
PCIe Lanes	0	0