Pentium D 940 vs i5-6600K
Primary details
Comparing Core i5-6600K and Pentium D 940 processor market type (desktop or notebook), architecture, sales start time and price.
Place in performance ranking | 1378 | not rated |
Place by popularity | not in top-100 | not in top-100 |
Cost-effectiveness evaluation | 0.76 | no data |
Market segment | Desktop processor | Desktop processor |
Series | Intel Core i5 (Desktop) | no data |
Architecture codename | Skylake (2015−2016) | Presler (2005−2007) |
Release date | 1 September 2015 (8 years ago) | 5 January 2006 (18 years ago) |
Launch price (MSRP) | $242 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i5-6600K and Pentium D 940 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) | 2 (Dual-core) |
Threads | 4 | 2 |
Base clock speed | 3.5 GHz | 3.2 GHz |
Boost clock speed | 3.9 GHz | 3.2 GHz |
Bus type | DMI 3.0 | no data |
Bus rate | 4 × 8 GT/s | no data |
Multiplier | 35 | no data |
L1 cache | 256 KB | 16 KB (per core) |
L2 cache | 1 MB | 2 MB (per die) |
L3 cache | 6 MB | 0 KB |
Chip lithography | 14 nm | 65 nm |
Die size | 122 mm2 | 2x 81 mm2 |
Maximum case temperature (TCase) | 72 °C | 69 °C |
Number of transistors | no data | 376 million |
64 bit support | + | + |
Windows 11 compatibility | - | - |
Unlocked multiplier | + | - |
VID voltage range | no data | 1.2V-1.3375V |
Compatibility
Information on Core i5-6600K and Pentium D 940 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 | LGA775,PLGA775 |
Power consumption (TDP) | 91 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i5-6600K and Pentium D 940. 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 | + | no data |
Enhanced SpeedStep (EIST) | + | + |
Turbo Boost Technology | 2.0 | - |
Hyper-Threading Technology | - | - |
TSX | + | - |
Idle States | + | + |
Thermal Monitoring | + | - |
Demand Based Switching | no data | - |
PAE | no data | 32 Bit |
FSB parity | no data | - |
Status | Discontinued | Discontinued |
Security technologies
Core i5-6600K and Pentium D 940 technologies aimed at improving security, for example, by protecting against hacks.
TXT | - | - |
EDB | + | + |
Secure Key | + | no data |
MPX | + | - |
Identity Protection | + | - |
SGX | Yes with Intel® ME | no data |
OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i5-6600K and Pentium D 940 are enumerated here.
AMD-V | + | - |
VT-d | + | - |
VT-x | + | + |
EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i5-6600K and Pentium D 940. Depending on the motherboard, higher memory frequencies may be supported.
Supported memory types | DDR3, DDR4 | DDR1, DDR2, DDR3 |
Maximum memory size | 64 GB | no data |
Max memory channels | 2 | no data |
Maximum memory bandwidth | 34.134 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
Integrated graphics card | Intel HD Graphics 530 | On certain motherboards (Chipset feature) |
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 Core i5-6600K and Pentium D 940 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 Core i5-6600K and Pentium D 940 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 Core i5-6600K and Pentium D 940 integrated GPUs, sometimes API versions are included.
DirectX | 12 | no data |
OpenGL | 4.5 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i5-6600K and Pentium D 940.
PCIe version | 3.0 | no data |
PCI Express lanes | 16 | 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.
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
Recency | 1 September 2015 | 5 January 2006 |
Physical cores | 4 | 2 |
Threads | 4 | 2 |
Chip lithography | 14 nm | 65 nm |
Power consumption (TDP) | 91 Watt | 130 Watt |
i5-6600K has an age advantage of 9 years, 100% more physical cores and 100% more threads, a 364.3% more advanced lithography process, and 42.9% lower power consumption.
We couldn't decide between Core i5-6600K and Pentium D 940. We've got no test results to judge.
Should you still have questions on choice between Core i5-6600K and Pentium D 940, 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.