Core i7-660UM vs Pentium U5400

Core i7-660UM

2 Cores4 Thrd18 WWMax: 2.4 GHz2010

Pentium U5400

2 Cores2 Thrd18 WWMax: 1.2 GHz2010

Performance Spectrum - CPU

Core i7-660UM

2 / 4

1,279

0.0%

Atom D2550

Pentium T3400

Pentium Dual-Core E2200

1,286

+0.5%

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 Core i7-660UM is positioned at rank 1225 and the Pentium U5400 is on rank 1219, so the Pentium U5400 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 Core i7-660UM

#1213

Atom x5-Z8300

MSRP: $20|Avg: N/A

7280%

#1214

Atom Z3735G

MSRP: $17|Avg: N/A

7174%

#1215

Core i5-480M

MSRP: $81|Avg: $77

6586%

#1216

Core i5-460M

MSRP: $80|Avg: $129

6556%

#1217

Core i5-2540M

MSRP: $266|Avg: $10

6496%

#1219

Core i5-450M

MSRP: $32|Avg: $31

6273%

#1220

Core i3-380M

MSRP: $49|Avg: $25

6015%

#1221

Core i5-430M

MSRP: N/A|Avg: $33

6005%

#1222

Core 2 Duo T6600

MSRP: N/A|Avg: $4

5844%

#1225

Core i7-660UM

MSRP: $317|Avg: N/A

100%

#1226

C-30

MSRP: $50|Avg: $15

100%

#1228

Core i7-620UM

MSRP: $278|Avg: N/A

97%

#1230

Celeron 570

MSRP: $134|Avg: $15

94%

#1231

Core i7-820QM

MSRP: $546|Avg: N/A

83%

#1233

Core Duo T2700

MSRP: $663|Avg: N/A

70%

#1235

Pentium SU4100

MSRP: $289|Avg: $15

59%

#1236

Core Solo T1400

MSRP: $200|Avg: $5

53%

#1237

Core i7-940XM

MSRP: $1096|Avg: N/A

51%

#1238

Core Solo T1350

MSRP: $200|Avg: $70

50%

#1240

Core Solo T1300

MSRP: $209|Avg: $10

46%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Pentium U5400

#1207

Atom x5-Z8300

MSRP: $20|Avg: N/A

6593%

#1208

Atom Z3735G

MSRP: $17|Avg: N/A

6497%

#1209

Core i5-480M

MSRP: $81|Avg: $77

5964%

#1210

Core i5-460M

MSRP: $80|Avg: $129

5937%

#1211

Core i5-2540M

MSRP: $266|Avg: $10

5883%

#1213

Core i5-450M

MSRP: $32|Avg: $31

5681%

#1214

Core i3-380M

MSRP: $49|Avg: $25

5447%

#1215

Core i5-430M

MSRP: N/A|Avg: $33

5438%

#1216

Core 2 Duo T6600

MSRP: N/A|Avg: $4

5292%

#1219

Pentium U5400

MSRP: $289|Avg: $214

100%

#1220

Pentium T2330

MSRP: $150|Avg: $7

100%

#1221

Z-01

MSRP: $50|Avg: $10

97%

#1222

Pentium T2310

MSRP: $150|Avg: $14

94%

#1223

Celeron SU2300

MSRP: $134|Avg: $134

91%

#1224

Core i5-560UM

MSRP: $250|Avg: N/A

91%

#1225

Core i7-660UM

MSRP: $317|Avg: N/A

91%

#1226

C-30

MSRP: $50|Avg: $15

90%

#1228

Core i7-620UM

MSRP: $278|Avg: N/A

88%

#1230

Celeron 570

MSRP: $134|Avg: $15

85%

#1232

Core i7-820QM

MSRP: $546|Avg: N/A

75%

#1233

Core Duo T2700

MSRP: $663|Avg: N/A

63%

Based on actual market prices and performance synthetic scores.

Performance Comparison

About PassMark

🏆 Chipversus Verdict

🚀 Performance Leadership

Performance Trade-off: The Core i7-660UM leads in gaming performance. However, the Pentium U5400 is the stronger candidate for professional workloads, offering 0.5% greater multi-core processing power.

Insight	Core i7-660UM	Pentium U5400
Gaming	✅ Superior gaming performance	❌ Lower gaming performance
Workstation	❌ Weaker in multi-core tasks	✅ Better multi-core power
Price	⚠️ Higher cost ($317)	✅ More affordable ($214)
Longevity	🛑 Legacy (Arrandale (2010−2011) / 32 nm)	🛑 Legacy (Arrandale (2010−2011) / 32 nm)

💎 Value Proposition

Efficiency: Even within a comparison of older hardware, the Pentium U5400 stands out as the superior choice. It is effectively 32% cheaper ($214 vs $317) while identifying as the stronger performer.

Insight	Core i7-660UM	Pentium U5400
Cost Efficiency	❌ Lower cost efficiency	✅ Better overall value (+49%)
Upfront Cost	⚠️ Higher cost ($317)	✅ More affordable ($214)

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.

Core i7-660UM Benchmark Check

Pentium U5400 Benchmark Check

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i7-660UM and Pentium U5400

Core i7-660UM

The Core i7-660UM is manufactured by Intel. It was released in 24 May 2010 (15 years ago). It is based on the Arrandale (2010−2011) architecture. It features 2 cores and 4 threads. Base frequency is 1.33 GHz, with boost up to 2.4 GHz. L3 cache: 4 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: BGA1288. Thermal design power (TDP): 18 Watt. Memory support: DDR3-800. Passmark benchmark score: 1,279 points. Launch price was $317.

Pentium U5400

The Pentium U5400 is manufactured by Intel. It was released in 2007-01-01. It is based on the Arrandale (2010−2011) architecture. It features 2 cores and 2 threads. Base frequency is 1.2 GHz, with boost up to 1.2 GHz. L3 cache: 3 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: BGA1288. Thermal design power (TDP): 18 Watt. Memory support: DDR3. Passmark benchmark score: 1,286 points. Launch price was $69.

⚡

Processing Power

The Core i7-660UM packs 2 cores / 4 threads, matching the Pentium U5400's 2 cores. Boost clocks reach 2.4 GHz on the Core i7-660UM versus 1.2 GHz on the Pentium U5400 — a 66.7% clock advantage for the Core i7-660UM (base: 1.33 GHz vs 1.2 GHz). Both are built on the Arrandale (2010−2011) architecture using a 32 nm process. In PassMark, the Core i7-660UM scores 1,279 against the Pentium U5400's 1,286 — a 0.5% lead for the Pentium U5400. Geekbench 6 single-core — the metric most relevant to gaming — records 250 vs 170, a 38.1% lead for the Core i7-660UM that directly translates to higher frame rates. Multi-core Geekbench: 600 vs 300 (66.7% advantage for the Core i7-660UM). L3 cache: 4 MB (total) on the Core i7-660UM vs 3 MB (total) on the Pentium U5400.

Feature	Core i7-660UM	Pentium U5400
Cores / Threads	2 / 4	2 / 2
Boost Clock	2.4 GHz+100%	1.2 GHz
Base Clock	1.33 GHz+11%	1.2 GHz
L3 Cache	4 MB (total)+33%	3 MB (total)
L2 Cache	256 kB (per core)	256K (per core)
Process	32 nm	32 nm
Architecture	Arrandale (2010−2011)	Arrandale (2010−2011)
PassMark	1,279	1,286
Geekbench 6 Single	250+47%	170
Geekbench 6 Multi	600+100%	300

🧠

Memory & Platform

Both processors use the BGA1288 socket with PCIe 2.0. Both support up to DDR3-1066 memory speed. Both support up to 8 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: PM55,HM55,QM57,HM57 (Core i7-660UM) and HM55 (Pentium U5400).

Feature	Core i7-660UM	Pentium U5400
Socket	BGA1288	BGA1288
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR3-1066	DDR3-800
Max RAM Capacity	8 GB	8 GB
RAM Channels	2	2
ECC Support	❌	❌
PCIe Lanes	16	16

🔧

Advanced Features

Neither processor supports overclocking. Virtualization support: VT-x, VT-d (Core i7-660UM) vs VT-x (Pentium U5400). Both include integrated graphics — HD Graphics (Core i7-660UM) and Intel HD Graphics (Ironlake) (Pentium U5400) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i7-660UM targets Budget, Pentium U5400 targets Legacy Budget Laptop.

Feature	Core i7-660UM	Pentium U5400
Integrated GPU	Yes	Yes
IGPU Model	HD Graphics	Intel HD Graphics (Ironlake)
Unlocked	No	No
AVX-512	No	No
Virtualization	VT-x, VT-d	VT-x
Target Use	Budget	Legacy Budget Laptop