Ryzen Threadripper PRO 5975WX vs Xeon E5645

Primary details

Comparing Xeon E5645 and Ryzen Threadripper PRO 5975WX processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1600	39
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.28	no data
Market segment	Server	Server
Series	no data	AMD Ryzen Threadripper
Power efficiency	3.76	16.10
Architecture codename	Westmere-EP (2010−2011)	Chagall PRO (2022)
Release date	16 March 2010 (14 years ago)	8 March 2022 (2 years ago)
Launch price (MSRP)	$294	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5645 and Ryzen Threadripper PRO 5975WX basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	6 (Hexa-Core)	32 (Dotriaconta-Core)
Threads	12	64
Base clock speed	2.4 GHz	3.6 GHz
Boost clock speed	2.67 GHz	4.5 GHz
Multiplier	no data	36
L1 cache	64 KB (per core)	2 MB
L2 cache	256 KB (per core)	16 MB
L3 cache	12 MB (shared)	128 MB
Chip lithography	32 nm	7 nm
Die size	239 mm2	4x 81 mm2
Maximum core temperature	76 °C	no data
Maximum case temperature (TCase)	no data	95 °C
Number of transistors	1,170 million	16,600 million
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Xeon E5645 and Ryzen Threadripper PRO 5975WX compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	2	1
Socket	FCLGA1366,LGA1366	WRX8
Power consumption (TDP)	80 Watt	280 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5645 and Ryzen Threadripper PRO 5975WX. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	no data
AES-NI	+	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	1.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Demand Based Switching	+	no data
PAE	40 Bit	no data

Security technologies

Xeon E5645 and Ryzen Threadripper PRO 5975WX technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5645 and Ryzen Threadripper PRO 5975WX are enumerated here.

AMD-V	-	+
VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5645 and Ryzen Threadripper PRO 5975WX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4-3200
Maximum memory size	288 GB	2 TiB
Max memory channels	3	no data
Maximum memory bandwidth	32 GB/s	204.8 GB/s
ECC memory support	+	-

Peripherals

Specifications and connection of peripherals supported by Xeon E5645 and Ryzen Threadripper PRO 5975WX.

PCIe version	2.0	4.0
PCI Express lanes	no data	128

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	3.30	49.43
Recency	16 March 2010	8 March 2022
Physical cores	6	32
Threads	12	64
Chip lithography	32 nm	7 nm
Power consumption (TDP)	80 Watt	280 Watt

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Should you still have questions on choice between Xeon E5645 and Ryzen Threadripper PRO 5975WX, ask them in Comments section, and we shall answer.

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