AMD Phenom X4 9950 BE (140W) vs Intel Pentium D 820

Comparative analysis of AMD Phenom X4 9950 BE (140W) and Intel Pentium D 820 processors for all known characteristics in the following categories: Essentials, Performance, Compatibility, Virtualization, Memory, Security & Reliability, Advanced Technologies. Benchmark processor performance analysis: CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

AMD Phenom X4 9950 BE (140W)

Intel Pentium D 820

Differences

Reasons to consider the AMD Phenom X4 9950 BE (140W)

CPU is newer: launch date 2 year(s) 9 month(s) later
Processor is unlocked, an unlocked multiplier allows for easier overclocking
2 more cores, run more applications at once: 4 vs 2
A newer manufacturing process allows for a more powerful, yet cooler running processor: 65 nm vs 90 nm
18.3x more L1 cache, more data can be stored in the L1 cache for quick access later

Launch date	March 2008 vs May 2005
Unlocked	Unlocked vs Locked
Number of cores	4 vs 2
Manufacturing process technology	65 nm vs 90 nm
L1 cache	128 KB (per core) vs 28 KB

Reasons to consider the Intel Pentium D 820

Around 8% higher clock speed: 2.8 GHz vs 2.6 GHz
Around 47% lower typical power consumption: 95 Watt vs 140 Watt

Maximum frequency	2.8 GHz vs 2.6 GHz
Max number of CPUs in a configuration	2 vs 1
Thermal Design Power (TDP)	95 Watt vs 140 Watt

Compare benchmarks

CPU 1: AMD Phenom X4 9950 BE (140W)
CPU 2: Intel Pentium D 820

Name	AMD Phenom X4 9950 BE (140W)	Intel Pentium D 820
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	3.118
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	6.836
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.162
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.298
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	3.494
Geekbench 4 - Single Core		179
Geekbench 4 - Multi-Core		307

Compare specifications (specs)

	AMD Phenom X4 9950 BE (140W)	Intel Pentium D 820
Essentials
Architecture codename	Agena	Smithfield
Launch date	March 2008	May 2005
Place in performance rating	3295	3292
Vertical segment	Desktop	Desktop
Processor Number		820
Series		Legacy Intel® Pentium® Processor
Status		Discontinued
Performance
64 bit support
Die size	285 mm	206 mm2
L1 cache	128 KB (per core)	28 KB
L2 cache	512 KB (per core)	2048 KB
L3 cache	2048 KB (shared)
Manufacturing process technology	65 nm	90 nm
Maximum frequency	2.6 GHz	2.8 GHz
Number of cores	4	2
Transistor count	450 million	230 million
Unlocked
Base frequency		2.80 GHz
Bus Speed		800 MHz FSB
Front-side bus (FSB)		800 MHz
Maximum core temperature		64.1°C
Number of threads		2
VID voltage range		1.200V-1.400V
Compatibility
Max number of CPUs in a configuration	1	2
Sockets supported	AM2+	PLGA775
Thermal Design Power (TDP)	140 Watt	95 Watt
Low Halogen Options Available
Package Size		37.5mm x 37.5mm
Virtualization
AMD Virtualization (AMD-V™)
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Memory
Supported memory types		DDR1, DDR2, DDR3
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
FSB parity
Idle States
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Physical Address Extensions (PAE)		32-bit
Thermal Monitoring