![]() |
Note: The information shown below is based on rumors and unoffical information. Technical details or benchmark results may be different in the final version of this processor. |
![]() |
![]() |
![]() |
AMD EPYC 7773X | AMD EPYC 9255 | |
CPU comparisonAMD EPYC 7773X or AMD EPYC 9255 - 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 AMD EPYC 7773X has 64 cores with 128 threads and clocks with a maximum frequency of 3.50 GHz. Up to 4096 GB of memory is supported in 8 memory channels. The AMD EPYC 7773X was released in Q2/2022. The AMD EPYC 9255 has 24 cores with 48 threads and clocks with a maximum frequency of 3.30 GHz. The CPU supports up to 6144 GB of memory in 12 memory channels. The AMD EPYC 9255 was released in Q4/2024. |
||
AMD EPYC (129) | Family | AMD EPYC (129) |
AMD EPYC 7003 (29) | CPU group | AMD EPYC 9005 (21) |
3 | Generation | 5 |
Milan (Zen 3) | Architecture | Turin (Zen 5 / Zen 5c) |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | AMD EPYC 9254 |
-- | Successor | -- |
|
||
CPU Cores and Base FrequencyThe AMD EPYC 7773X has 64 CPU cores and can calculate 128 threads in parallel. The clock frequency of the AMD EPYC 7773X is 2.20 GHz (3.50 GHz) while the AMD EPYC 9255 has 24 CPU cores and 48 threads can calculate simultaneously. The clock frequency of the AMD EPYC 9255 is at 3.30 GHz. |
||
AMD EPYC 7773X | Characteristic | AMD EPYC 9255 |
64 | Cores | 24 |
128 | Threads | 48 |
normal | Core architecture | normal |
Yes | Hyperthreading | Yes |
No | Overclocking ? | No |
2.20 GHz | Frequency | 3.30 GHz |
3.50 GHz | Turbo Frequency (1 Core) | -- |
-- | Turbo Frequency (All Cores) | -- |
Memory & PCIeThe AMD EPYC 7773X can use up to 4096 GB of memory in 8 memory channels. The maximum memory bandwidth is 204.8 GB/s. The AMD EPYC 9255 supports up to 6144 GB of memory in 12 memory channels and achieves a memory bandwidth of up to 480.0 GB/s. |
||
AMD EPYC 7773X | Characteristic | AMD EPYC 9255 |
DDR4-3200 | Memory | DDR5-6000 |
4096 GB | Max. Memory | 6144 GB |
8 (Octa Channel) | Memory channels | 12 |
204.8 GB/s | Max. Bandwidth | 480.0 GB/s |
Yes | ECC | Yes |
32.00 MB | L2 Cache | -- |
768.00 MB | L3 Cache | 96.00 MB |
4.0 | PCIe version | 5.0 |
128 | PCIe lanes | 128 |
252.0 GB/s | PCIe Bandwidth | 504.1 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the AMD EPYC 7773X is 280 W, while the AMD EPYC 9255 has a TDP of 200 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
||
AMD EPYC 7773X | Characteristic | AMD EPYC 9255 |
280 W | TDP (PL1 / PBP) | 200 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
225 W | TDP down | -- |
-- | Tjunction max. | 100 °C |
Technical detailsThe AMD EPYC 7773X is manufactured in 7 nm and has 800.00 MB cache. The AMD EPYC 9255 is manufactured in 4 nm and has a 96.00 MB cache. |
||
AMD EPYC 7773X | Characteristic | AMD EPYC 9255 |
7 nm | Technology | 4 nm |
Chiplet | Chip design | Chiplet |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 | ISA extensions | SSE4.2, AVX2, AVX-512, BFLOAT16, VNNI |
SP3 | Socket | SP5 |
AMD-V, SVM | Virtualization | AMD-V, SVM |
Yes | AES-NI | Yes |
Windows 10, Linux | Operating systems | Windows Server 2022, Linux, Windows 11 |
Q2/2022 | Release date | Q4/2024 |
8800 $ | Release price | -- |
show more data | show more data | |
![]() |
AMD EPYC 7773X
64C 128T @ 3.50 GHz |
||
![]() |
AMD EPYC 9255
24C 48T @ 3.30 GHzNot verified |
![]() |
AMD EPYC 7773X
64C 128T @ 3.50 GHz |
||
![]() |
AMD EPYC 9255
24C 48T @ 3.30 GHzNot verified |
![]() |
AMD EPYC 7773X
64C 128T @ 3.50 GHz |
||
![]() |
AMD EPYC 9255
24C 48T @ 3.30 GHzNot verified |
![]() |
AMD EPYC 7773X
64C 128T @ 3.50 GHz |
||
![]() |
AMD EPYC 9255
24C 48T @ 3.30 GHzNot verified |
![]() |
AMD EPYC 7773X
64C 128T @ 2.20 GHz |
||
![]() |
AMD EPYC 9255
24C 48T @ 3.30 GHzNot verified |
![]() |
AMD EPYC 7773X
64C 128T @ 2.20 GHz |
||
![]() |
AMD EPYC 9255
24C 48T @ 3.30 GHzNot verified |
Devices using this processor |
|
AMD EPYC 7773X | AMD EPYC 9255 |
Unknown | Unknown |