Intel Xeon E5645 vs Intel Xeon E5502

Comparative analysis of Intel Xeon E5645 and Intel Xeon E5502 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, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, 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).

Intel Xeon E5645

Intel Xeon E5502

Differences

Reasons to consider the Intel Xeon E5645

CPU is newer: launch date 1 year(s) 0 month(s) later
4 more cores, run more applications at once: 6 vs 2
10 more threads: 12 vs 2
Around 44% higher clock speed: 2.67 GHz vs 1.86 GHz
Around 0% higher maximum core temperature: 76.2°C vs 76°C
A newer manufacturing process allows for a more powerful, yet cooler running processor: 32 nm vs 45 nm
3x more L1 cache, more data can be stored in the L1 cache for quick access later
3x more L2 cache, more data can be stored in the L2 cache for quick access later
3x more L3 cache, more data can be stored in the L3 cache for quick access later
2x more maximum memory size: 288 GB vs 144 GB
Around 43% better performance in PassMark - Single thread mark: 1178 vs 825
4.9x better performance in PassMark - CPU mark: 9164 vs 1853

Specifications (specs)
Launch date	March 2010 vs March 2009
Number of cores	6 vs 2
Number of threads	12 vs 2
Maximum frequency	2.67 GHz vs 1.86 GHz
Maximum core temperature	76.2°C vs 76°C
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)
L3 cache	12288 KB (shared) vs 4096 KB (shared)
Maximum memory size	288 GB vs 144 GB
Benchmarks
PassMark - Single thread mark	1178 vs 825
PassMark - CPU mark	9164 vs 1853

Compare benchmarks

CPU 1: Intel Xeon E5645
CPU 2: Intel Xeon E5502

PassMark - Single thread mark

CPU 1

CPU 2

1178

825

PassMark - CPU mark

CPU 1

CPU 2

9164

1853

Name	Intel Xeon E5645	Intel Xeon E5502
PassMark - Single thread mark	1178	825
PassMark - CPU mark	9164	1853
Geekbench 4 - Single Core	442
Geekbench 4 - Multi-Core	2731
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	2.308
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	49.224
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.623
CompuBench 1.5 Desktop - Video Composition (Frames/s)	3.664
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	11.094

Compare specifications (specs)

	Intel Xeon E5645	Intel Xeon E5502
Essentials
Architecture codename	Westmere EP	Nehalem EP
Launch date	March 2010	March 2009
Launch price (MSRP)	$294	$95
Place in performance rating	2489	2481
Price now	$239.95	$95
Processor Number	E5645	E5502
Series	Legacy Intel® Xeon® Processors	Legacy Intel® Xeon® Processors
Status	Launched	Launched
Value for money (0-100)	7.96	4.27
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	2.40 GHz	1.86 GHz
Bus Speed	5.86 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	12288 KB (shared)	4096 KB (shared)
Manufacturing process technology	32 nm	45 nm
Maximum core temperature	76.2°C	76°C
Maximum frequency	2.67 GHz	1.86 GHz
Number of cores	6	2
Number of QPI Links	2	2
Number of threads	12	2
Transistor count	1170 million	731 million
VID voltage range	0.750V-1.350V	0.75V -1.35V
Memory
ECC memory support
Max memory channels	3	3
Maximum memory bandwidth	32 GB/s	19.2 GB/s
Maximum memory size	288 GB	144 GB
Supported memory types	DDR3 800/1066/1333	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)