Intel Pentium G645T vs Intel Core 2 Extreme QX9650

Comparative analysis of Intel Pentium G645T and Intel Core 2 Extreme QX9650 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, 3DMark Fire Strike - Physics Score.

Intel Pentium G645T

Intel Core 2 Extreme QX9650

Differences

Reasons to consider the Intel Pentium G645T

CPU is newer: launch date 4 year(s) 9 month(s) later
Around 1% higher maximum core temperature: 65.0°C vs 64.5°C
A newer manufacturing process allows for a more powerful, yet cooler running processor: 32 nm vs 45 nm
3.7x lower typical power consumption: 35 Watt vs 130 Watt

Launch date	September 2012 vs November 2007
Maximum core temperature	65.0°C vs 64.5°C
Manufacturing process technology	32 nm vs 45 nm
Thermal Design Power (TDP)	35 Watt vs 130 Watt

Reasons to consider the Intel Core 2 Extreme QX9650

Processor is unlocked, an unlocked multiplier allows for easier overclocking
2 more cores, run more applications at once: 4 vs 2
Around 20% higher clock speed: 3 GHz vs 2.5 GHz
2x more L1 cache, more data can be stored in the L1 cache for quick access later
24x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 3% better performance in Geekbench 4 - Single Core: 465 vs 452
Around 73% better performance in Geekbench 4 - Multi-Core: 1463 vs 848

Specifications (specs)
Unlocked	Unlocked vs Locked
Number of cores	4 vs 2
Maximum frequency	3 GHz vs 2.5 GHz
L1 cache	256 KB vs 64 KB (per core)
L2 cache	12288 KB vs 256 KB (per core)
Benchmarks
Geekbench 4 - Single Core	465 vs 452
Geekbench 4 - Multi-Core	1463 vs 848

Compare benchmarks

CPU 1: Intel Pentium G645T
CPU 2: Intel Core 2 Extreme QX9650

Geekbench 4 - Single Core

CPU 1

CPU 2

452

465

Geekbench 4 - Multi-Core

CPU 1

CPU 2

848

1463

Name	Intel Pentium G645T	Intel Core 2 Extreme QX9650
PassMark - Single thread mark	1131
PassMark - CPU mark	1228
Geekbench 4 - Single Core	452	465
Geekbench 4 - Multi-Core	848	1463
3DMark Fire Strike - Physics Score		4864

Compare specifications (specs)

	Intel Pentium G645T	Intel Core 2 Extreme QX9650
Essentials
Architecture codename	Sandy Bridge	Yorkfield
Launch date	September 2012	November 2007
Place in performance rating	2528	2536
Processor Number	G645T	QX9650
Series	Legacy Intel® Pentium® Processor	Legacy Intel® Core™ Processors
Status	Discontinued	Discontinued
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	2.50 GHz	3.00 GHz
Bus Speed	5 GT/s DMI	1333 MHz FSB
Die size	131 mm	214 mm2
L1 cache	64 KB (per core)	256 KB
L2 cache	256 KB (per core)	12288 KB
L3 cache	3072 KB (shared)
Manufacturing process technology	32 nm	45 nm
Maximum core temperature	65.0°C	64.5°C
Maximum frequency	2.5 GHz	3 GHz
Number of cores	2	4
Number of threads	2
Transistor count	504 million	820 million
Maximum case temperature (TCase)		64 °C
Unlocked
VID voltage range		0.8500V-1.3625V
Memory
Max memory channels	2
Maximum memory bandwidth	17 GB/s
Maximum memory size	32 GB
Supported memory types	DDR3 1066	DDR1, DDR2, DDR3
Graphics
Graphics base frequency	650 MHz
Graphics max dynamic frequency	1.10 GHz
Graphics max frequency	1.1 GHz
Intel® Clear Video HD technology
Intel® Flexible Display Interface (Intel® FDI)
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Processor graphics	Intel HD Graphics
Graphics interfaces
Number of displays supported	2
Wireless Display (WiDi) support
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	37.5mm x 37.5mm	37.5mm x 37.5mm
Sockets supported	FCLGA1155	LGA775
Thermal Design Power (TDP)	35 Watt	130 Watt
Peripherals
Max number of PCIe lanes	16
PCI Express revision	2.0
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Flexible Display interface (FDI)
Idle States
Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Fast Memory Access
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® Optane™ Memory Supported
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Thermal Monitoring
FSB parity
Intel® Demand Based Switching
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)