Xeon 5120 vs i7-6800K

Primary details

Comparing Core i7-6800K and Xeon 5120 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1021	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.58	no data
Market segment	Desktop processor	Server
Power efficiency	4.58	no data
Architecture codename	Broadwell-E (2016)	Woodcrest (2006)
Release date	31 May 2016 (8 years ago)	June 2006 (18 years ago)
Launch price (MSRP)	$345	$45

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-6800K and Xeon 5120 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)	2 (Dual-core)
Threads	12	2
Base clock speed	3.4 GHz	1.86 GHz
Boost clock speed	3.8 GHz	1.87 GHz
L1 cache	32 KB (per core)	0 KB
L2 cache	256 KB (per core)	4 MB
L3 cache	15 MB (shared)	0 KB
Chip lithography	14 nm	65 nm
Maximum core temperature	no data	65 °C
Maximum case temperature (TCase)	72 °C	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-
VID voltage range	no data	B2=1.0V-1.5V, G0=.85V-1.5V

Compatibility

Information on Core i7-6800K and Xeon 5120 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	FCLGA2011	LGA771
Power consumption (TDP)	140 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-6800K and Xeon 5120. You'll probably need this information if you require some particular technology.

AES-NI	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	-
Hyper-Threading Technology	+	-
Idle States	+	+
Thermal Monitoring	-	+
Smart Response	+	no data
Demand Based Switching	no data	-
Turbo Boost Max 3.0	+	no data
FSB parity	no data	+

Security technologies

Core i7-6800K and Xeon 5120 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-6800K and Xeon 5120 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-6800K and Xeon 5120. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR2
Maximum memory size	128 GB	no data
Max memory channels	4	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-6800K and Xeon 5120.

PCIe version	3.0	no data
PCI Express lanes	28	no data

Synthetic benchmark performance

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

---

---

Pros & cons summary

---

Physical cores	6	2
Threads	12	2
Chip lithography	14 nm	65 nm
Power consumption (TDP)	140 Watt	65 Watt

---

Should you still have questions on choice between Core i7-6800K and Xeon 5120, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---