AMD EPYC 7643: specs and benchmarks
- Core clock speed
- Max video memory
- Memory type
- Memory clock speed
- Maximum resolution
AMD started AMD EPYC 7643 sales 15 March 2021 at a recommended price of $4,995. This is high-end Milan architecture desktop processor primarily aimed at professional systems. It has 48 cores and 96 threads, and is based on 7 nm+ manufacturing technology, with a max turbo frequency of 3600 MHz and an unlocked multiplier.
Compatibility-wise, this is AMD Socket SP3 processor with a TDP of 225 Watt. It supports DDR4-3200 memory.
It provides good benchmark performance at
of a leader's which is AMD Ryzen Threadripper PRO 5995WX.
Of EPYC 7643 processor market type (desktop or notebook), architecture, sales start time and pricing.
|Place in performance rating||7|
|Architecture codename||Milan (2021)|
|Release date||15 March 2021 (1 year ago)|
|Launch price (MSRP)||$4,995||of 305 (Core i7-870)|
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
|Physical cores||48 (Octatetraconta-Core)|
|Base clock speed||2.3 GHz||of 4.7 (FX-9590)|
|Boost clock speed||3.6 GHz||of 5.5 (Core i9-12900KS)|
|L1 cache||96K (per core)||of 1536 (EPYC Embedded 3401)|
|L2 cache||512K (per core)||of 12288 (Core 2 Quad Q9550)|
|L3 cache||256 MB (shared)||of 32 (Ryzen Threadripper 1998)|
|Chip lithography||7 nm+||of 5 (Apple M1)|
|64 bit support||+|
|Windows 11 compatibility||+|
Information on EPYC 7643 compatibility with other computer components and devices: 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||of 8 (Opteron 842)|
|Thermal design power (TDP)||225 Watt||of 400 (Xeon Platinum 9282)|
Technologies and extensions
Technological capabilities and additional instructions supported by EPYC 7643. You'll probably need this information if you require some particular technology.
Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.
Types, maximum amount and channel number of RAM supported by EPYC 7643's memory controller. Depending on the motherboard, higher memory frequency may be supported.
|Supported memory types||DDR4-3200||of 4800 (Ryzen 9 6980HX)|
|Maximum memory size||4 TiB||of 786 (Xeon E5-2670 v3)|
|Maximum memory bandwidth||204.795 GB/s||of 281.6 (Xeon Platinum 9221)|
Single-core and multi-core benchmark results of EPYC 7643. Overall benchmark performance is measured in points in 0-100 range, higher is better.
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 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.
Overall EPYC 7643 performance compared to nearest competitors among server CPUs.
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
Here is the rating given to the reviewed processor by our users. Let others know your opinion by rating it yourself.