Ryzen Threadripper PRO 3945WX vs Xeon E3-1205 v6

Primary details

Comparing Xeon E3-1205 v6 and Ryzen Threadripper PRO 3945WX processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1504	254
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	5.04	no data
Market segment	Server	Server
Series	Intel Xeon E3	AMD Ryzen Threadripper
Power efficiency	5.20	7.14
Architecture codename	Kaby Lake (2016−2019)	Matisse (2019−2020)
Release date	28 March 2017 (7 years ago)	14 July 2020 (4 years ago)
Launch price (MSRP)	$193	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E3-1205 v6 and Ryzen Threadripper PRO 3945WX 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	4 (Quad-Core)	12 (Dodeca-Core)
Threads	4	24
Base clock speed	3 GHz	4 GHz
Boost clock speed	3 GHz	4.3 GHz
Bus type	DMI 3.0	no data
Bus rate	8 GT/s	no data
Multiplier	30	40
L1 cache	256 KB	64K (per core)
L2 cache	1 MB	512K (per core)
L3 cache	8 MB	64 MB
Chip lithography	14 nm	7 nm, 12 nm
Die size	no data	74 mm2
Maximum case temperature (TCase)	no data	95 °C
Number of transistors	no data	3,800 million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+
VID voltage range	0.55V-1.52V	no data

Compatibility

Information on Xeon E3-1205 v6 and Ryzen Threadripper PRO 3945WX 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 (Uniprocessor)	1
Socket	FCLGA1151	TR4
Power consumption (TDP)	65 Watt	280 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E3-1205 v6 and Ryzen Threadripper PRO 3945WX. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	no data
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
Hyper-Threading Technology	-	no data
TSX	+	-
Idle States	+	no data
Thermal Monitoring	+	-

Security technologies

Xeon E3-1205 v6 and Ryzen Threadripper PRO 3945WX technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
Secure Key	+	no data
MPX	+	-
SGX	Yes with both Intel® SPS and Intel® ME	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E3-1205 v6 and Ryzen Threadripper PRO 3945WX 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 E3-1205 v6 and Ryzen Threadripper PRO 3945WX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2400, DDR3L-1866	DDR4-3200
Maximum memory size	64 GB	2 TiB
Max memory channels	2	no data
Maximum memory bandwidth	38.397 GB/s	204.8 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics P630	-
Max video memory	1.7 GB	-
Quick Sync Video	+	-
Clear Video	+	-
Clear Video HD	+	-
Graphics max frequency	1 GHz	-
InTru 3D	+	-

Graphics interfaces

Available interfaces and connections of Xeon E3-1205 v6 and Ryzen Threadripper PRO 3945WX integrated GPUs.

Number of displays supported	3	-
eDP	+	-
DisplayPort	+	-
HDMI	+	-
DVI	+	-

Graphics image quality

Maximum display resolutions supported by Xeon E3-1205 v6 and Ryzen Threadripper PRO 3945WX integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	-
Max resolution over HDMI 1.4	4096x2160@24Hz	-
Max resolution over eDP	4096x2304@60Hz	-
Max resolution over DisplayPort	4096x2304@60Hz	-
Max resolution over VGA	N/A	-

Graphics API support

APIs supported by Xeon E3-1205 v6 and Ryzen Threadripper PRO 3945WX integrated GPUs, sometimes API versions are included.

DirectX	12	-
OpenGL	4.4	-

Peripherals

Specifications and connection of peripherals supported by Xeon E3-1205 v6 and Ryzen Threadripper PRO 3945WX.

PCIe version	3.0	4.0
PCI Express lanes	16	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	3.71	21.91
Recency	28 March 2017	14 July 2020
Physical cores	4	12
Threads	4	24
Chip lithography	14 nm	7 nm
Power consumption (TDP)	65 Watt	280 Watt

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Should you still have questions on choice between Xeon E3-1205 v6 and Ryzen Threadripper PRO 3945WX, ask them in Comments section, and we shall answer.

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