Intel Xeon X3450 vs AMD Phenom II X4 840T

Comparative analysis of Intel Xeon X3450 and AMD Phenom II X4 840T processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. 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), PassMark - Single thread mark, PassMark - CPU mark.

Intel Xeon X3450

AMD Phenom II X4 840T

Differences

Reasons to consider the Intel Xeon X3450

Around 10% higher clock speed: 3.20 GHz vs 2.9 GHz
Around 33% more L3 cache; more data can be stored in the L3 cache for quick access later
6.2x better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 58.957 vs 9.486
2x better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.373 vs 0.186

Specifications (specs)
Maximum frequency	3.20 GHz vs 2.9 GHz
L3 cache	8 MB vs 6144 KB (shared)
Benchmarks
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	58.957 vs 9.486
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.373 vs 0.186

Reasons to consider the AMD Phenom II X4 840T

CPU is newer: launch date 11 month(s) later
2x more L1 cache, more data can be stored in the L1 cache for quick access later
2x more L2 cache, more data can be stored in the L2 cache for quick access later
3.1x better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 3.606 vs 1.157

Specifications (specs)
Launch date	September 2010 vs 8 Sep 2009
L1 cache	128 KB (per core) vs 256 KB
L2 cache	512 KB (per core) vs 1 MB
Benchmarks
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	3.606 vs 1.157

Compare benchmarks

CPU 1: Intel Xeon X3450
CPU 2: AMD Phenom II X4 840T

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

1.157

3.606

CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)

CPU 1

CPU 2

58.957

9.486

CompuBench 1.5 Desktop - T-Rex (Frames/s)

CPU 1

CPU 2

0.373

0.186

Name	Intel Xeon X3450	AMD Phenom II X4 840T
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	1.157	3.606
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	58.957	9.486
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.373	0.186
CompuBench 1.5 Desktop - Video Composition (Frames/s)	1.72
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.984
PassMark - Single thread mark		1272
PassMark - CPU mark		2360

Compare specifications (specs)

	Intel Xeon X3450	AMD Phenom II X4 840T
Essentials
Architecture codename	Lynnfield	Zosma
Launch date	8 Sep 2009	September 2010
Launch price (MSRP)	$261	$80
Place in performance rating	3093	2722
Processor Number	X3450
Series	Legacy Intel Xeon Processors
Vertical segment	Server	Desktop
Price now		$69.99
Value for money (0-100)		15.15
Performance
64 bit support
Base frequency	2.66 GHz
Bus Speed	2.5 GT/s
Die size	296 mm2	346 mm
L1 cache	256 KB	128 KB (per core)
L2 cache	1 MB	512 KB (per core)
L3 cache	8 MB	6144 KB (shared)
Manufacturing process technology	45 nm	45 nm
Maximum core temperature	72.7°C
Maximum frequency	3.20 GHz	2.9 GHz
Number of cores	4	4
Number of threads	8
Transistor count	774 million	904 million
VID voltage range	0.6500V-1.4000V
Memory
Max memory channels	2
Maximum memory bandwidth	21 GB/s
Maximum memory size	32 GB
Supported memory types	DDR3 800/1066/1333	DDR3
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	37.5mm x 37.5mm
Sockets supported	LGA1156	AM3
Thermal Design Power (TDP)	95 Watt	95 Watt
Peripherals
Max number of PCIe lanes	16
PCI Express revision	2.0
PCIe configurations	1x16, 2x8, 4x4
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions	Intel SSE4.2
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Physical Address Extensions (PAE)	36-bit
Thermal Monitoring
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)
AMD Virtualization (AMD-V™)