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.

Overview

The Core i7-3960X is manufactured by Intel. It was released in 14 November 2011 (14 years ago). It is based on the Sandy Bridge-E (2011−2013) architecture. It features 6 cores and 12 threads. Base frequency is 3.3 GHz, with boost up to 3.9 GHz. L3 cache: 15 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA2011. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 8,402 points. Launch price was $861.

Value Upgrade Path

This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. The Core i7-3960X is positioned at rank #1024 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.

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 i7-3960X

Ryzen 9 7950X

MSRP: $194|Avg: $20

37065%

Core i9-10900T

MSRP: $120|Avg: $5

35023%

Ryzen 3 PRO 4355GE

MSRP: $423|Avg: $5

25429%

Ryzen Threadripper 3960X

MSRP: $1399|Avg: $85

7661%

Ryzen 9 9950X

MSRP: $649|Avg: $129

6068%

Ryzen 5 8400F

MSRP: $303|Avg: $55

5308%

Ryzen 7 PRO 2700

MSRP: $299|Avg: $60

3040%

Ryzen 5 2600X

MSRP: $229|Avg: $55

3001%

Ryzen 3 PRO 5350G

MSRP: $150|Avg: $60

2732%

#10

Core Ultra 5 245KF

MSRP: $294|Avg: $189

2732%

#11

Ryzen 5 5500

MSRP: $159|Avg: $85

2701%

#12

Ryzen 5 3600

MSRP: $199|Avg: $80

2629%

#13

Core i3-9100E

MSRP: $202|Avg: $30

2592%

#14

Core Ultra 5 245K

MSRP: $319|Avg: $200

2581%

#15

Core i3-8300T

MSRP: $138|Avg: $25

2558%

#396

Ryzen Embedded R2314

MSRP: $300|Avg: $762

91%

#1024

Core i7-3960X

MSRP: $999|Avg: $60

100%

#1025

Celeron 2.70

MSRP: $49|Avg: $49

99%

#1027

A10 PRO-7850B

MSRP: $426|Avg: $140

96%

#1028

Core 2 Quad Q8200

MSRP: $224|Avg: $36

96%

#1029

A12-9800E

MSRP: $426|Avg: $150

95%

#1030

Phenom II X6 1065T

MSRP: $426|Avg: $170

95%

#1031

Celeron 440

MSRP: $59|Avg: $10

95%

#1032

A8-3820

MSRP: $280|Avg: $200

93%

#1033

Core i7-860S

MSRP: $299|Avg: $96

92%

#1035

PRO A10-8770E

MSRP: $395|Avg: $210

90%

#1036

Core 2 Duo E4700

MSRP: $133|Avg: $10

90%

#1037

Athlon 64 X2 5800+

MSRP: $230|Avg: $20

90%

#1038

Phenom II X2 B53

MSRP: $150|Avg: $15

90%

#1039

Core 2 Quad Q9300

MSRP: $266|Avg: $27

90%

Based on actual market prices and performance synthetic scores.

FPS Benchmarks

Predicted performance for Core i7-3960X across popular games. Tested paired with RTX 4090 to isolate CPU performance.

Technical Analysis

Detailed breakdown of Core i7-3960X specifications and capabilities.

⚡

Processing Power

The Core i7-3960X is a 6-core / 12-thread processor based on the Sandy Bridge-E (2011−2013) architecture, manufactured on a 32 nm process node. It reaches a maximum boost clock of 3.9 GHz from a base frequency of 3.3 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 15 MB (total) of L3 cache, plus 256 kB (per core) of L2 cache and 64 kB (per core) of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 8,402, placing it in the Budget performance tier as a Legacy generation product. Geekbench 6 single-core (the most relevant metric for gaming FPS) records 658, while multi-core reaches 4,973.

Specification	Core i7-3960X
Cores / ThreadsPhysical/logical processing units	6C / 12T
Max Boost ClockPeak single-core speed under boost	3.9 GHz
Base ClockGuaranteed minimum operating frequency	3.3 GHz
ArchitectureCPU microarchitecture design	Sandy Bridge-E (2011−2013)
Process NodeFabrication technology — smaller = more efficient	32 nm
L3 CacheShared cache — reduces memory latency for all cores	15 MB (total)
L2 CachePer-core fast cache for frequently accessed data	256 kB (per core)
L1 CacheUltra-fast per-core cache	64 kB (per core)
Die SizePhysical silicon area of the processor	435 mm2
Transistor CountMore transistors = more capabilities	2,270 million
Bus SpeedData bus frequency	5 GT/s
64-bit Support	Yes
Windows 11 Compatible	No
Unlocked MultiplierWhether the CPU can be overclocked	Yes (Overclockable)
PassMark ScoreOverall multi-threaded benchmark score	8,402
Geekbench 6 SingleSingle-core performance — most relevant for gaming	658
Geekbench 6 MultiMulti-core parallel workload performance	4,973

🧠

Memory & Platform

The Core i7-3960X fits into the LGA2011 socket and supports PCIe 2.0 with 40 total PCIe lanes for expansion cards and storage. It supports DDR3 memory at speeds up to DDR3-1600 (faster RAM improves bandwidth-sensitive workloads), with a maximum capacity of 64 GB across 4 channels (dual-channel doubles bandwidth).

Specification	Core i7-3960X
TypeDesktop or Laptop processor	desktop
SeriesProduct family	Core i7 (Desktop)
SocketMotherboard socket required	LGA2011
PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth	PCIe 2.0
PCIe LanesTotal available lanes for GPUs, NVMe drives, and expansion	40
RAM TypeSupported memory standard	DDR3
Max RAM SpeedMaximum officially supported memory frequency	DDR3-1600
Max RAM CapacityMaximum installable memory	64 GB
RAM ChannelsDual-channel doubles bandwidth vs single-channel	4
ECC SupportError-Correcting Code memory — prevents data corruption	No
Integrated GPUBuilt-in graphics processor	No
Compatible ChipsetsMotherboard chipsets that support this CPU	X79
Max CPUs in ConfigMulti-socket support for servers	1

🔧

Advanced Features

Virtualization: Yes — enables running virtual machines efficiently (important for development and server workloads).

Specification	Core i7-3960X
AVX-512Advanced vector instructions for AI/ML workloads	❌ Not Supported
VirtualizationHardware-assisted virtualization technology	Yes

🌡️

Power & Cooling

The Core i7-3960X has a rated TDP (Thermal Design Power) of 130 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed. No stock cooler is included — you will need to purchase an aftermarket cooler separately.

Specification	Core i7-3960X
TDPThermal Design Power — heat output under sustained workload	130 Watt
Included CoolerStock cooler bundled in the box	No

💰

Value Analysis

At an average price of $60 (MSRP: $999), the Core i7-3960X delivers 140 PassMark points per dollar. It currently holds Rank #1024 in the overall cost-benefit ranking — this ranking factors in performance-per-dollar relative to all available processors. Performance ranking position: #1417 out of all indexed processors.

Specification	Core i7-3960X
MSRPManufacturer's Suggested Retail Price	$999
Avg Price (30d)Average market price over the last 30 days	$60
Launch PriceOriginal retail price at launch	$861
Cost-Benefit RankPosition in overall value ranking	#1024
Performance RankPosition in overall performance ranking	#1417
Release DateLaunch date	14 November 2011 (14 years ago)
Release Year	2011
DesignerArchitecture designer (e.g. Intel, AMD)	Intel
ManufacturerFabrication foundry (e.g. TSMC)	Intel