Intel Xeon E5603 vs Intel Xeon E5503

Comparative analysis of Intel Xeon E5603 and Intel Xeon E5503 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark.

Intel Xeon E5603

Intel Xeon E5503

Differences

Reasons to consider the Intel Xeon E5603

CPU is newer: launch date 11 month(s) later
2 more cores, run more applications at once: 4 vs 2
2 more threads: 4 vs 2
A newer manufacturing process allows for a more powerful, yet cooler running processor: 32 nm vs 45 nm
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
2x more maximum memory size: 288 GB vs 144 GB
Around 99% better performance in PassMark - CPU mark: 3548 vs 1787

Specifications (specs)
Launch date	February 2011 vs March 2010
Number of cores	4 vs 2
Number of threads	4 vs 2
Manufacturing process technology	32 nm vs 45 nm
L1 cache	64 KB (per core) vs 64 KB (per core)
L2 cache	256 KB (per core) vs 256 KB (per core)
Maximum memory size	288 GB vs 144 GB
Benchmarks
PassMark - CPU mark	3548 vs 1787

Reasons to consider the Intel Xeon E5503

Around 25% higher clock speed: 2 GHz vs 1.6 GHz
Around 10% better performance in PassMark - Single thread mark: 783 vs 710

Specifications (specs)
Maximum frequency	2 GHz vs 1.6 GHz
Benchmarks
PassMark - Single thread mark	783 vs 710

Compare benchmarks

CPU 1: Intel Xeon E5603
CPU 2: Intel Xeon E5503

PassMark - Single thread mark

CPU 1

CPU 2

710

783

PassMark - CPU mark

CPU 1

CPU 2

3548

1787

Name	Intel Xeon E5603	Intel Xeon E5503
PassMark - Single thread mark	710	783
PassMark - CPU mark	3548	1787

Compare specifications (specs)

	Intel Xeon E5603	Intel Xeon E5503
Essentials
Architecture codename	Westmere EP	Nehalem EP
Launch date	February 2011	March 2010
Launch price (MSRP)	$286	$287
Place in performance rating	2572	2554
Price now	$129.04	$287.01
Processor Number	E5603	E5503
Series	Legacy Intel® Xeon® Processors	Legacy Intel® Xeon® Processors
Status	Discontinued	Launched
Value for money (0-100)	5.40	1.43
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	1.60 GHz	2.00 GHz
Bus Speed	4.8 GT/s QPI	4.8 GT/s QPI
Die size	239 mm	263 mm
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	256 KB (per core)	256 KB (per core)
L3 cache	4096 KB (shared)	4096 KB (shared)
Manufacturing process technology	32 nm	45 nm
Maximum frequency	1.6 GHz	2 GHz
Number of cores	4	2
Number of QPI Links	2	2
Number of threads	4	2
Transistor count	1170 million	731 million
VID voltage range	0.750V-1.350V	0.75V -1.35V
Maximum core temperature		76°C
Memory
ECC memory support
Max memory channels	3	3
Maximum memory bandwidth	25.6 GB/s	19.2 GB/s
Maximum memory size	288 GB	144 GB
Supported memory types	DDR3 800/1066	DDR3 800
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	2	2
Package Size	42.5mm X 45mm	42.5mm x 45mm
Sockets supported	FCLGA1366	FCLGA1366
Thermal Design Power (TDP)	80 Watt	80 Watt
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)	40-bit	40-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)