Pentium Gold G6405T vs Xeon X5660
Aggregate performance score
Xeon X5660 outperforms Pentium Gold G6405T by an impressive 80% based on our aggregate benchmark results.
Primary details
Comparing Xeon X5660 and Pentium Gold G6405T processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1467 | 1868 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.05 | no data |
| Market segment | Server | Desktop processor |
| Power efficiency | 3.77 | 5.68 |
| Architecture codename | Westmere-EP (2010−2011) | Comet Lake-R (2021) |
| Release date | 16 March 2010 (14 years ago) | 16 March 2021 (3 years ago) |
| Launch price (MSRP) | $33 | $64 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon X5660 and Pentium Gold G6405T 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 | 4 |
| Base clock speed | 2.8 GHz | 3.5 GHz |
| Boost clock speed | 3.2 GHz | 3.5 GHz |
| Bus rate | no data | 8 GT/s |
| L1 cache | 64 KB (per core) | 64 KB (per core) |
| L2 cache | 256 KB (per core) | 256 KB (per core) |
| L3 cache | 12 MB (shared) | 4 MB (shared) |
| Chip lithography | 32 nm | 14 nm |
| Die size | 239 mm2 | no data |
| Maximum core temperature | 81 °C | 100 °C |
| Maximum case temperature (TCase) | no data | 72 °C |
| Number of transistors | 1,170 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Xeon X5660 and Pentium Gold G6405T 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 | 1 |
| Socket | FCLGA1366,LGA1366 | FCLGA1200 |
| Power consumption (TDP) | 95 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon X5660 and Pentium Gold G6405T. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2 | Intel® SSE4.1, Intel® SSE4.2 |
| AES-NI | + | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 1.0 | - |
| Hyper-Threading Technology | + | + |
| Idle States | + | + |
| Thermal Monitoring | - | + |
| Demand Based Switching | + | no data |
| PAE | 40 Bit | no data |
| Turbo Boost Max 3.0 | no data | - |
Security technologies
Xeon X5660 and Pentium Gold G6405T technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| Secure Key | no data | + |
| Identity Protection | - | + |
| SGX | no data | Yes with Intel® ME |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon X5660 and Pentium Gold G6405T are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon X5660 and Pentium Gold G6405T. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4-2666 |
| Maximum memory size | 288 GB | 128 GB |
| Max memory channels | 3 | 2 |
| Maximum memory bandwidth | 32 GB/s | 41.6 GB/s |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel UHD Graphics 610 |
| Max video memory | no data | 64 GB |
| Quick Sync Video | - | + |
| Clear Video | no data | + |
| Clear Video HD | no data | + |
| Graphics max frequency | no data | 1.05 GHz |
| InTru 3D | no data | + |
Graphics interfaces
Available interfaces and connections of Xeon X5660 and Pentium Gold G6405T integrated GPUs.
| Number of displays supported | no data | 3 |
Graphics image quality
Maximum display resolutions supported by Xeon X5660 and Pentium Gold G6405T integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | no data | + |
| Max resolution over HDMI 1.4 | no data | 4096x2160@30Hz |
| Max resolution over eDP | no data | 4096x2304@60Hz |
| Max resolution over DisplayPort | no data | 4096x2304@60Hz |
Graphics API support
APIs supported by Xeon X5660 and Pentium Gold G6405T integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.5 |
Peripherals
Specifications and connection of peripherals supported by Xeon X5660 and Pentium Gold G6405T.
| PCIe version | 2.0 | 3.0 |
| PCI Express lanes | no data | 16 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Performance score | 3.86 | 2.14 |
| Recency | 16 March 2010 | 16 March 2021 |
| Physical cores | 6 | 2 |
| Threads | 12 | 4 |
| Chip lithography | 32 nm | 14 nm |
| Power consumption (TDP) | 95 Watt | 35 Watt |
Xeon X5660 has a 80.4% higher aggregate performance score, and 200% more physical cores and 200% more threads.
Pentium Gold G6405T, on the other hand, has an age advantage of 11 years, a 128.6% more advanced lithography process, and 171.4% lower power consumption.
The Xeon X5660 is our recommended choice as it beats the Pentium Gold G6405T in performance tests.
Be aware that Xeon X5660 is a server/workstation processor while Pentium Gold G6405T is a desktop one.
Should you still have questions on choice between Xeon X5660 and Pentium Gold G6405T, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
