Ultra 7 265T vs Xeon E3-1275 v5
Primary details
Comparing Xeon E3-1275 v5 and Core Ultra 7 265T processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1177 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.30 | no data |
| Market segment | Server | Desktop processor |
| Series | Intel Xeon E3 | no data |
| Power efficiency | 6.26 | no data |
| Architecture codename | Skylake-DT (2015) | Arrow Lake-S (2024−2025) |
| Release date | 19 October 2015 (9 years ago) | January 2025 |
| Launch price (MSRP) | $350 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E3-1275 v5 and Core Ultra 7 265T 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) | 20 (Icosa-Core) |
| Threads | 8 | 20 |
| Base clock speed | 3.6 GHz | 1.5 GHz |
| Boost clock speed | 4 GHz | 5.3 GHz |
| Bus type | DMI 3.0 | no data |
| Bus rate | 4 × 8 GT/s | no data |
| Multiplier | 36 | no data |
| L1 cache | 64 KB (per core) | 112 KB (per core) |
| L2 cache | 256 KB (per core) | 3 MB (per core) |
| L3 cache | 8 MB (shared) | 30 MB (shared) |
| Chip lithography | 14 nm | 3 nm |
| Die size | 122 mm2 | 243 mm2 |
| Number of transistors | 1,750 million | 17,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Xeon E3-1275 v5 and Core Ultra 7 265T 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 | 1851 |
| Power consumption (TDP) | 80 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E3-1275 v5 and Core Ultra 7 265T. 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 | + | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | + |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
Security technologies
Xeon E3-1275 v5 and Core Ultra 7 265T technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | no data |
| Secure Key | + | no data |
| MPX | + | - |
| SGX | Yes with Intel® ME | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E3-1275 v5 and Core Ultra 7 265T are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E3-1275 v5 and Core Ultra 7 265T. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-1866/2133, DDR3L-1333/1600 | DDR5 |
| Maximum memory size | 64 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 34.134 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics P530 | Arc Xe-LPG Graphics 64EU |
| Max video memory | 64 GB | no data |
| Quick Sync Video | + | - |
| Clear Video | + | no data |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.15 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Xeon E3-1275 v5 and Core Ultra 7 265T integrated GPUs.
| Number of displays supported | 3 | no data |
| eDP | + | no data |
| DisplayPort | + | - |
| HDMI | + | - |
| DVI | + | no data |
Graphics image quality
Maximum display resolutions supported by Xeon E3-1275 v5 and Core Ultra 7 265T integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | + | no data |
| Max resolution over HDMI 1.4 | 4096x2304@24Hz | no data |
| Max resolution over eDP | 4096x2304@60Hz | no data |
| Max resolution over DisplayPort | 4096x2304@60Hz | no data |
| Max resolution over VGA | N/A | no data |
Graphics API support
APIs supported by Xeon E3-1275 v5 and Core Ultra 7 265T integrated GPUs, sometimes API versions are included.
| DirectX | 12 | no data |
| OpenGL | 4.4 | no data |
Peripherals
Specifications and connection of peripherals supported by Xeon E3-1275 v5 and Core Ultra 7 265T.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 16 | 20 |
Pros & cons summary
| Physical cores | 4 | 20 |
| Threads | 8 | 20 |
| Chip lithography | 14 nm | 3 nm |
| Power consumption (TDP) | 80 Watt | 35 Watt |
Ultra 7 265T has 400% more physical cores and 150% more threads, a 366.7% more advanced lithography process, and 128.6% lower power consumption.
We couldn't decide between Xeon E3-1275 v5 and Core Ultra 7 265T. We've got no test results to judge.
Be aware that Xeon E3-1275 v5 is a server/workstation processor while Core Ultra 7 265T is a desktop one.
Should you still have questions on choice between Xeon E3-1275 v5 and Core Ultra 7 265T, ask them in Comments section, and we shall answer.
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