AMD Ryzen 9 7950X3D vs Intel Xeon E5649

Comparative analysis of AMD Ryzen 9 7950X3D and Intel Xeon E5649 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Advanced Technologies, Virtualization, Security & Reliability. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, 3DMark Fire Strike - Physics Score, 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).

AMD Ryzen 9 7950X3D

Intel Xeon E5649

Differences

Reasons to consider the AMD Ryzen 9 7950X3D

CPU is newer: launch date 11 year(s) 7 month(s) later
Processor is unlocked, an unlocked multiplier allows for easier overclocking
10 more cores, run more applications at once: 16 vs 6
20 more threads: 32 vs 12
Around 95% higher clock speed: 5.7 GHz vs 2.93 GHz
Around 17% higher maximum core temperature: 89 °C vs 76.2°C
A newer manufacturing process allows for a more powerful, yet cooler running processor: 5 nm vs 32 nm
2.7x more L1 cache, more data can be stored in the L1 cache for quick access later
10.7x more L2 cache, more data can be stored in the L2 cache for quick access later
10.7x more L3 cache, more data can be stored in the L3 cache for quick access later
3.4x better performance in PassMark - Single thread mark: 4149 vs 1219
6.5x better performance in PassMark - CPU mark: 62439 vs 9554

Specifications (specs)
Launch date	27 Sep 2022 vs February 2011
Unlocked	Unlocked vs Locked
Number of cores	16 vs 6
Number of threads	32 vs 12
Maximum frequency	5.7 GHz vs 2.93 GHz
Maximum core temperature	89 °C vs 76.2°C
Manufacturing process technology	5 nm vs 32 nm
L1 cache	1 MB vs 64 KB (per core)
L2 cache	16 MB vs 256 KB (per core)
L3 cache	128 MB vs 12288 KB (shared)
Benchmarks
PassMark - Single thread mark	4149 vs 1219
PassMark - CPU mark	62439 vs 9554

Reasons to consider the Intel Xeon E5649

Around 50% lower typical power consumption: 80 Watt vs 120 Watt

Max number of CPUs in a configuration	2 vs 1
Thermal Design Power (TDP)	80 Watt vs 120 Watt

Compare benchmarks

CPU 1: AMD Ryzen 9 7950X3D
CPU 2: Intel Xeon E5649

PassMark - Single thread mark

CPU 1

CPU 2

4149

1219

PassMark - CPU mark

CPU 1

CPU 2

62439

9554

Name	AMD Ryzen 9 7950X3D	Intel Xeon E5649
PassMark - Single thread mark	4149	1219
PassMark - CPU mark	62439	9554
3DMark Fire Strike - Physics Score	14290
Geekbench 4 - Single Core		470
Geekbench 4 - Multi-Core		2849
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		2.594
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		25.435
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.647

Compare specifications (specs)

	AMD Ryzen 9 7950X3D	Intel Xeon E5649
Essentials
Architecture codename	Zen 4	Westmere EP
Launch date	27 Sep 2022	February 2011
OPN Tray	100-000000908
Place in performance rating	55	2424
Vertical segment	Desktop	Server
Launch price (MSRP)		$45
Price now		$115
Processor Number		E5649
Series		Legacy Intel® Xeon® Processors
Status		Launched
Value for money (0-100)		17.77
Performance
Base frequency	4.2 GHz	2.53 GHz
Die size	71 mm²	239 mm
L1 cache	1 MB	64 KB (per core)
L2 cache	16 MB	256 KB (per core)
L3 cache	128 MB	12288 KB (shared)
Manufacturing process technology	5 nm	32 nm
Maximum case temperature (TCase)	47 °C
Maximum core temperature	89 °C	76.2°C
Maximum frequency	5.7 GHz	2.93 GHz
Number of cores	16	6
Number of threads	32	12
Transistor count	13140 million	1170 million
Unlocked
64 bit support
Bus Speed		5.86 GT/s QPI
Number of QPI Links		2
VID voltage range		0.750V-1.350V
Memory
ECC memory support
Max memory channels	2	3
Supported memory types	DDR5-5200	DDR3 800/1066/1333
Maximum memory bandwidth		32 GB/s
Maximum memory size		288 GB
Compatibility
Max number of CPUs in a configuration	1	2
Sockets supported	AM5	FCLGA1366
Thermal Design Power (TDP)	120 Watt	80 Watt
Low Halogen Options Available
Package Size		42.5mm X 45mm
Peripherals
Max number of PCIe lanes	24
PCI Express revision	5.0
Advanced Technologies
Enhanced Virus Protection (EVP)
Fused Multiply-Add 3 (FMA3)
Intel® Advanced Vector Extensions (AVX)
Intel® Advanced Vector Extensions 2 (AVX2)
Intel® AES New Instructions
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions		Intel® SSE4.2
Intel 64
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Physical Address Extensions (PAE)		40-bit
Thermal Monitoring
Virtualization
AMD Virtualization (AMD-V™)
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)