Ryzen Threadripper PRO 3975WX vs Pentium D 950

Primary details

Comparing Pentium D 950 and Ryzen Threadripper PRO 3975WX processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2959	68
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Series	no data	AMD Ryzen Threadripper
Power efficiency	0.31	13.29
Architecture codename	Presler (2005−2007)	Matisse (2019−2020)
Release date	16 January 2006 (18 years ago)	14 July 2020 (4 years ago)
Launch price (MSRP)	$637	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Pentium D 950 and Ryzen Threadripper PRO 3975WX 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	2 (Dual-core)	32 (Dotriaconta-Core)
Threads	2	64
Base clock speed	3.4 GHz	3.5 GHz
Boost clock speed	3.4 GHz	4.2 GHz
Multiplier	no data	35
L1 cache	16 KB (per core)	64K (per core)
L2 cache	2 MB (per die)	512K (per core)
L3 cache	0 KB	128 MB
Chip lithography	65 nm	7 nm, 12 nm
Die size	2x 81 mm2	74 mm2
Maximum core temperature	C1+D0=63 °C, B1=69 °C	95 °C
Maximum case temperature (TCase)	no data	95 °C
Number of transistors	376 million	3,800 million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+
VID voltage range	1.2V-1.3375V	no data

Compatibility

Information on Pentium D 950 and Ryzen Threadripper PRO 3975WX 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	1	1
Socket	LGA775,PLGA775	sWRX8
Power consumption (TDP)	130 Watt	280 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 950 and Ryzen Threadripper PRO 3975WX. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AES, AVX, AVX2, BMI1, BMI2, SHA, F16C, FMA3, AMD64, EVP, AMD-V, SMAP, SMEP, SMT, Precision Boost 2, XFR 2
AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Demand Based Switching	-	no data
PAE	32 Bit	no data
FSB parity	-	no data
Precision Boost 2	no data	+

Security technologies

Pentium D 950 and Ryzen Threadripper PRO 3975WX 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 Pentium D 950 and Ryzen Threadripper PRO 3975WX are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 950 and Ryzen Threadripper PRO 3975WX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR4-3200
Maximum memory size	no data	2 TiB
Maximum memory bandwidth	no data	204.8 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

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Peripherals

Specifications and connection of peripherals supported by Pentium D 950 and Ryzen Threadripper PRO 3975WX.

PCIe version	no data	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	0.43	39.33
Recency	16 January 2006	14 July 2020
Physical cores	2	32
Threads	2	64
Chip lithography	65 nm	7 nm
Power consumption (TDP)	130 Watt	280 Watt

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Should you still have questions on choice between Pentium D 950 and Ryzen Threadripper PRO 3975WX, ask them in Comments section, and we shall answer.

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