Intel Core i9-9940X | Intel Xeon D-1577 | |
CPU comparisonIntel Core i9-9940X or Intel Xeon D-1577 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.
The Intel Core i9-9940X has 14 cores with 28 threads and clocks with a maximum frequency of 4.50 GHz. Up to 128 GB of memory is supported in 4 memory channels. The Intel Core i9-9940X was released in Q4/2018. The Intel Xeon D-1577 has 16 cores with 32 threads and clocks with a maximum frequency of 2.10 GHz. The CPU supports up to 128 GB of memory in 2 memory channels. The Intel Xeon D-1577 was released in Q3/2017. |
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Intel Core i9 (78) | Family | Intel Xeon D (79) |
Intel Core i 9000X (8) | CPU group | Intel Xeon D-1500 (22) |
9 | Generation | 1 |
Skylake X Refresh | Architecture | Broadwell |
Desktop / Server | Segment | Desktop / Server |
Intel Core i9-7940X | Predecessor | -- |
-- | Successor | -- |
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CPU Cores and Base FrequencyThe Intel Core i9-9940X is a 14 core processor with a clock frequency of 3.30 GHz (4.50 GHz). The Intel Xeon D-1577 has 16 CPU cores with a clock frequency of 1.30 GHz (2.10 GHz). |
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Intel Core i9-9940X | Characteristic | Intel Xeon D-1577 |
14 | Cores | 16 |
28 | Threads | 32 |
normal | Core architecture | normal |
Yes | Hyperthreading | Yes |
Yes | Overclocking ? | No |
3.30 GHz | Frequency | 1.30 GHz |
4.50 GHz | Turbo Frequency (1 Core) | 2.10 GHz |
4.20 GHz | Turbo Frequency (All Cores) | 1.30 GHz |
Memory & PCIeThe Intel Core i9-9940X supports a maximum of 128 GB of memory in 4 memory channels. The Intel Xeon D-1577 can connect up to 128 GB of memory in 2 memory channels. |
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Intel Core i9-9940X | Characteristic | Intel Xeon D-1577 |
DDR4-2666 | Memory | DDR4-2133 |
128 GB | Max. Memory | 128 GB |
4 (Quad Channel) | Memory channels | 2 (Dual Channel) |
85.4 GB/s | Max. Bandwidth | 34.1 GB/s |
No | ECC | Yes |
-- | L2 Cache | 24.00 MB |
19.00 MB | L3 Cache | -- |
3.0 | PCIe version | 3.0 |
44 | PCIe lanes | 32 |
43.3 GB/s | PCIe Bandwidth | 31.5 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core i9-9940X has a TDP of 165 W, that of the Intel Xeon D-1577 is 45 W. |
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Intel Core i9-9940X | Characteristic | Intel Xeon D-1577 |
165 W | TDP (PL1 / PBP) | 45 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
92 °C | Tjunction max. | -- |
Technical detailsThe Intel Core i9-9940X has a 19.00 MB cache, while the Intel Xeon D-1577 cache has a total of 24.00 MB. |
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Intel Core i9-9940X | Characteristic | Intel Xeon D-1577 |
14 nm | Technology | 14 nm |
Monolithic | Chip design | Monolithic |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE4.1, SSE4.2, AVX2, AVX-512 | ISA extensions | SSE4.1, SSE4.2, AVX2 |
LGA 2066 | Socket | BGA 1667 |
VT-x, VT-x EPT, VT-d | Virtualization | VT-x, VT-x EPT, VT-d |
Yes | AES-NI | Yes |
Windows 10, Windows 11, Linux | Operating systems | Windows 10, Linux |
Q4/2018 | Release date | Q3/2017 |
1387 $ | Release price | 1258 $ |
show more data | show more data | |
Intel Core i9-9940X
14C 28T @ 4.50 GHz |
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Intel Xeon D-1577
16C 32T @ 2.10 GHz |
Intel Core i9-9940X
14C 28T @ 4.20 GHz |
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Intel Xeon D-1577
16C 32T @ 1.30 GHz |
Intel Core i9-9940X
14C 28T @ 4.50 GHz |
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Intel Xeon D-1577
16C 32T @ 2.10 GHz |
Intel Core i9-9940X
14C 28T @ 4.20 GHz |
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Intel Xeon D-1577
16C 32T @ 1.30 GHz |
Intel Core i9-9940X
14C 28T @ 4.20 GHz |
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Intel Xeon D-1577
16C 32T @ 1.30 GHz |
Intel Core i9-9940X
14C 28T @ 4.50 GHz |
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Intel Xeon D-1577
16C 32T @ 2.10 GHz |
Intel Core i9-9940X
14C 28T @ 4.20 GHz |
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Intel Xeon D-1577
16C 32T @ 1.30 GHz |
Intel Core i9-9940X
14C 28T @ 4.50 GHz |
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Intel Xeon D-1577
16C 32T @ 2.10 GHz |
Intel Core i9-9940X
14C 28T @ 4.20 GHz |
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Intel Xeon D-1577
16C 32T @ 1.30 GHz |
Devices using this processor |
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Intel Core i9-9940X | Intel Xeon D-1577 |
Unknown | Unknown |