Celeron J3355E vs Xeon 6521P
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 108 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 33.98 | no data |
| Market segment | Server | Desktop processor |
| Power efficiency | 6.94 | no data |
| Designer | Intel | Intel |
| Manufacturer | Intel | no data |
| Architecture codename | Granite Rapids (2024−2025) | no data |
| Release date | 24 February 2025 (less than a year ago) | 1 July 2019 (6 years ago) |
| Launch price (MSRP) | $1,250 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Xeon 6521P and Celeron J3355E 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 | 24 (Tetracosa-Core) | 2 (Dual-core) |
| Threads | 48 | 2 |
| Base clock speed | 2.6 GHz | 2 GHz |
| Boost clock speed | 4.1 GHz | 2.5 GHz |
| L1 cache | 112 KB (per core) | no data |
| L2 cache | 2 MB (per core) | no data |
| L3 cache | 144 MB (shared) | 2 MB |
| Chip lithography | Intel 3 nm | 14 nm |
| Die size | 598 mm2 | no data |
| Maximum core temperature | no data | 105 °C |
| Maximum case temperature (TCase) | 82 °C | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | - |
Compatibility
Information on Xeon 6521P and Celeron J3355E 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 | FCLGA4710 | no data |
| Power consumption (TDP) | 225 Watt | 10 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon 6521P and Celeron J3355E. 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® AMX | no data |
| AES-NI | + | + |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | + | no data |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | - |
| TSX | + | - |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Smart Response | no data | - |
| Deep Learning Boost | + | - |
Security technologies
Xeon 6521P and Celeron J3355E technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
| Identity Protection | - | + |
| SGX | + | no data |
| OS Guard | + | - |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon 6521P and Celeron J3355E are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| VT-i | no data | - |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon 6521P and Celeron J3355E. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5(6400MT/s) | DDR3L/LPDDR3 up to 1866 MT/s; LPDDR4 up to 2400 MT/s |
| Maximum memory size | 4 TB | 8 GB |
| Max memory channels | 8 | 2 |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | Intel HD Graphics 500 |
| Max video memory | no data | 8 GB |
| Quick Sync Video | - | + |
| Clear Video | no data | + |
| Clear Video HD | no data | + |
| Execution Units | no data | 12 |
Graphics interfaces
Available interfaces and connections of Xeon 6521P and Celeron J3355E integrated GPUs.
| Number of displays supported | no data | 3 |
| eDP | no data | + |
| DisplayPort | - | + |
| HDMI | - | + |
| MIPI-DSI | no data | + |
Graphics API support
APIs supported by Xeon 6521P and Celeron J3355E integrated GPUs, sometimes API versions are included.
| DirectX | no data | + |
| OpenGL | no data | + |
Peripherals
Specifications and connection of peripherals supported by Xeon 6521P and Celeron J3355E.
| PCIe version | 5.0 | 2.0 |
| PCI Express lanes | 136 | 6 |
Pros & cons summary
| Recency | 24 February 2025 | 1 July 2019 |
| Physical cores | 24 | 2 |
| Threads | 48 | 2 |
| Power consumption (TDP) | 225 Watt | 10 Watt |
Xeon 6521P has an age advantage of 5 years, and 1100% more physical cores and 2300% more threads.
Celeron J3355E, on the other hand, has 2150% lower power consumption.
We couldn't decide between Intel Xeon 6521P and Intel Celeron J3355E. We've got no test results to judge.
Be aware that Xeon 6521P is a server/workstation processor while Celeron J3355E is a desktop one.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
