Xeon Phi 7255 vs Silver 4309Y

Primary details

Comparing Xeon Silver 4309Y and Xeon Phi 7255 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	582	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	7.63	no data
Market segment	Server	Server
Architecture codename	Ice Lake-SP (2021)	no data
Release date	6 April 2021 (3 years ago)	1 October 2017 (6 years ago)
Current price	$2293	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon Silver 4309Y and Xeon Phi 7255 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	8 (Octa-Core)	68 (Octahexaconta-Core)
Threads	16	68
Base clock speed	2.8 GHz	1.1 GHz
Boost clock speed	3.6 GHz	1.2 GHz
L1 cache	64K (per core)	no data
L2 cache	1 MB (per core)	no data
L3 cache	12 MB (shared)	34 MB L2 Cache
Chip lithography	10 nm	14 nm
Maximum core temperature	76 °C	82 °C
Maximum case temperature (TCase)	76 °C	no data
64 bit support	+	+
Windows 11 compatibility	+	-
Unlocked multiplier	No	No
VID voltage range	no data	0.550-1.2V

Compatibility

Information on Xeon Silver 4309Y and Xeon Phi 7255 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	no data
Socket	FCLGA4189	no data
Power consumption (TDP)	105 Watt	215 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Silver 4309Y and Xeon Phi 7255. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512	Intel® AVX-512
AES-NI	+	+
AVX	+	no data
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
Speed Shift	+	no data
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	no data
TSX	+	no data
Idle States	no data	+
Thermal Monitoring	no data	+
Status	Launched	Launched

Security technologies

Xeon Silver 4309Y and Xeon Phi 7255 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+
MPX	no data	-
SGX	Yes with Intel® SPS	-

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Silver 4309Y and Xeon Phi 7255 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Silver 4309Y and Xeon Phi 7255. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2667	DDR4-2400
Maximum memory size	6 TB	384 GB
Max memory channels	8	6
Maximum memory bandwidth	no data	115.2 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon Silver 4309Y and Xeon Phi 7255.

PCIe version	4.0	3.0
PCI Express lanes	64	36

Pros & cons summary

---

Recency	6 April 2021	1 October 2017
Physical cores	8	68
Threads	16	68
Chip lithography	10 nm	14 nm
Power consumption (TDP)	105 Watt	215 Watt

---

Should you still have questions on choice between Xeon Silver 4309Y and Xeon Phi 7255, 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.

---