Core 2 Extreme X7900 vs Core 2 Extreme X7800

Core 2 Extreme X7900

2 Cores2 Thrd4 WWMax: 2.8 GHz2007

Core 2 Extreme X7800

2 Cores2 Thrd4 WWMax: 2.6 GHz2007

Performance Spectrum - CPU

Core 2 Extreme X7900

2 / 2

1,115

0.0%

Pentium D 830

Pentium T2370

Pentium T3400

Pentium Dual-Core E2200

1,138

+2.1%

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 2 Extreme X7900 is positioned at rank 1162 and the Core 2 Extreme X7800 is on rank 1145, so the Core 2 Extreme X7800 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 2 Extreme X7900

#1150

Atom x5-Z8300

MSRP: $20|Avg: N/A

4185%

#1151

Atom Z3735G

MSRP: $17|Avg: N/A

4124%

#1152

Core i5-480M

MSRP: $81|Avg: $77

3786%

#1153

Core i5-460M

MSRP: $80|Avg: $129

3769%

#1154

Core i5-2540M

MSRP: $266|Avg: $10

3734%

#1156

Core i5-450M

MSRP: $32|Avg: $31

3606%

#1157

Core i3-380M

MSRP: $49|Avg: $25

3458%

#1158

Core i5-430M

MSRP: N/A|Avg: $33

3452%

#1159

Core 2 Duo T6600

MSRP: N/A|Avg: $4

3359%

#1162

Core 2 Extreme X7900

MSRP: N/A|Avg: N/A

100%

#1163

Core i7-2620M

MSRP: $346|Avg: N/A

100%

#1164

Celeron N3010

MSRP: $107|Avg: N/A

98%

#1165

Core i7-3537U

MSRP: $346|Avg: N/A

97%

#1166

Core M-5Y10a

MSRP: $281|Avg: $281

97%

#1167

Core M-5Y10c

MSRP: $281|Avg: $281

97%

#1168

Core M-5Y31

MSRP: $281|Avg: $30

97%

#1170

Celeron 1047UE

MSRP: $100|Avg: $100

96%

#1171

Core M-5Y70

MSRP: $281|Avg: $281

96%

#1172

Celeron U3400

MSRP: $86|Avg: $5

95%

#1173

Celeron T1600

MSRP: $107|Avg: $15

95%

#1174

Pro A12-8800B

MSRP: $400|Avg: $40

95%

#1176

Core i7-2637M

MSRP: $289|Avg: N/A

93%

#1177

Core 2 Duo SL9600

MSRP: $316|Avg: N/A

93%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Core 2 Extreme X7800

#1133

Atom x5-Z8300

MSRP: $20|Avg: N/A

3866%

#1134

Atom Z3735G

MSRP: $17|Avg: N/A

3809%

#1135

Core i5-480M

MSRP: $81|Avg: $77

3497%

#1136

Core i5-460M

MSRP: $80|Avg: $129

3481%

#1137

Core i5-2540M

MSRP: $266|Avg: $10

3449%

#1139

Core i5-450M

MSRP: $32|Avg: $31

3331%

#1140

Core i3-380M

MSRP: $49|Avg: $25

3194%

#1141

Core i5-430M

MSRP: N/A|Avg: $33

3188%

#1142

Core 2 Duo T6600

MSRP: N/A|Avg: $4

3103%

#1145

Core 2 Extreme X7800

MSRP: N/A|Avg: N/A

100%

#1146

Pentium 957

MSRP: $134|Avg: $10

100%

#1147

Core 2 Duo SL9400

MSRP: $284|Avg: N/A

99%

#1149

Pentium N3540

MSRP: $161|Avg: $161

99%

#1150

Core i7-3555LE

MSRP: $300|Avg: $280

98%

#1151

Core i3-2377M

MSRP: $250|Avg: N/A

97%

#1152

Core 2 Duo E8435

MSRP: $150|Avg: $74

97%

#1153

Celeron M 723

MSRP: $161|Avg: $161

97%

#1154

Core M-5Y51

MSRP: $281|Avg: $281

95%

#1155

Core i7-3517UE

MSRP: $330|Avg: $35

95%

#1156

Pentium N3530

MSRP: $161|Avg: $20

95%

#1157

Core i3-330E

MSRP: $177|Avg: $89

94%

#1159

Core i7-2640M

MSRP: $346|Avg: N/A

93%

Based on actual market prices and performance synthetic scores.

Performance Comparison

About PassMark

🏆 Chipversus Verdict

🚀 Performance Leadership

Performance Trade-off: The Core 2 Extreme X7900 leads in gaming performance. However, the Core 2 Extreme X7800 is the stronger candidate for professional workloads, offering 2% greater multi-core processing power.

Insight	Core 2 Extreme X7900	Core 2 Extreme X7800
Gaming	✅ Superior gaming performance	❌ Lower gaming performance
Workstation	❌ Weaker in multi-core tasks	✅ Better multi-core power
Price	Equivalent pricing	Equivalent pricing
Longevity	🛑 Legacy (Merom (2006−2008) / 65 nm)	🛑 Legacy (Merom XE (2007) / 65 nm)

💎 Value Proposition

Insight	Core 2 Extreme X7900	Core 2 Extreme X7800
Cost Efficiency	❌ Lower cost efficiency	❌ Lower cost efficiency
Upfront Cost	Equivalent pricing	Equivalent pricing

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 2 Extreme X7900 Benchmark Check

Core 2 Extreme X7800 Benchmark Check

Technical Specifications

Side-by-side comparison of Core 2 Extreme X7900 and Core 2 Extreme X7800

Core 2 Extreme X7900

The Core 2 Extreme X7900 is manufactured by Intel. It was released in 1 September 2007 (18 years ago). It is based on the Merom (2006−2008) architecture. It features 2 cores and 2 threads. Base frequency is 2.8 GHz, with boost up to 2.8 GHz. L3 cache: 0 kB. L2 cache: 4 MB. Built on 65 nm process technology. Socket: PGA478. Thermal design power (TDP): 44 Watt. Memory support: DDR1. Passmark benchmark score: 1,115 points. Launch price was $851.

Core 2 Extreme X7800

The Core 2 Extreme X7800 is manufactured by Intel. It was released in 17 July 2007 (18 years ago). It is based on the Merom XE (2007) architecture. It features 2 cores and 2 threads. Base frequency is 2.6 GHz, with boost up to 2.6 GHz. L3 cache: 4 MB L2 Cache. L2 cache: 4 MB. Built on 65 nm process technology. Socket: PGA478. Thermal design power (TDP): 44 Watt. Passmark benchmark score: 1,138 points. Launch price was $851.

⚡

Processing Power

Both the Core 2 Extreme X7900 and Core 2 Extreme X7800 share an identical 2-core/2-thread configuration. Boost clocks reach 2.8 GHz on the Core 2 Extreme X7900 versus 2.6 GHz on the Core 2 Extreme X7800 — a 7.4% clock advantage for the Core 2 Extreme X7900 (base: 2.8 GHz vs 2.6 GHz). The Core 2 Extreme X7900 uses the Merom (2006−2008) architecture (65 nm), while the Core 2 Extreme X7800 uses Merom XE (2007) (65 nm). In PassMark, the Core 2 Extreme X7900 scores 1,115 against the Core 2 Extreme X7800's 1,138 — a 2% lead for the Core 2 Extreme X7800. L3 cache: 0 kB on the Core 2 Extreme X7900 vs 4 MB L2 Cache on the Core 2 Extreme X7800.

Feature	Core 2 Extreme X7900	Core 2 Extreme X7800
Cores / Threads	2 / 2	2 / 2
Boost Clock	2.8 GHz+8%	2.6 GHz
Base Clock	2.8 GHz+8%	2.6 GHz
L3 Cache	0 kB	4 MB L2 Cache
L2 Cache	4 MB	4 MB
Process	65 nm	65 nm
Architecture	Merom (2006−2008)	Merom XE (2007)
PassMark	1,115	1,138+2%

🧠

Memory & Platform

Both processors use the PGA478 socket with PCIe 1.1. Both support up to DDR2-667 memory speed. Both support up to 4 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Core 2 Extreme X7900) vs 16 (Core 2 Extreme X7800) — the Core 2 Extreme X7800 offers 16 more lanes for additional GPUs or NVMe drives.

Feature	Core 2 Extreme X7900	Core 2 Extreme X7800
Socket	PGA478	PGA478
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	DDR2-667	DDR2-667
Max RAM Capacity	4 GB	4 GB
RAM Channels	2	2
ECC Support	❌	❌
PCIe Lanes	0	16

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Both support VT-x virtualization. Primary use case: Core 2 Extreme X7900 targets Mobile.