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How many memory controllers are there on the 5th Gen Intel Xeon Scalable Processors?
When you select the Intel® Xeon® Gold 6530 processor in the DELL Server Configurator, for example, which has an eight-channel memory controller. Each controller supports DDR5 4800MHz memory.
The bandwidth of a DDR5 4800 MHz memory module depends on several factors,
including:
Number of channels:
- In single-channel mode, the bandwidth will be 4800 MHz x 64 bits/channel / 8 bits/byte = 38,400 MB/s.
- In dual-channel mode, bandwidth doubles, reaching 76,800 MB/s.
- In quad-channel mode, bandwidth increases fourfold, to 153,600 MB/s.
- In eight-channel mode, bandwidth increases eightfold, to 307,200 MB/s.
Memory bus width:
- Modern DDR5 modules have a 32-bit memory bus per channel.
- Clock frequency:
- In this case, the clock frequency is 4800 MHz.
It should be noted that this is theoretical bandwidth.
Actual throughput may be lower due to latency and other factors affecting system performance.
The impact of the number of installed memory modules on the performance of the Intel Xeon Gold 6530 processor depends on several factors:
1. Number of memory channels:
- The Xeon Gold 6530 processor has 16 memory channels.
- The more memory channels involved, the higher the bandwidth of the memory subsystem, which can lead to a significant increase in performance, especially in memory bandwidth-sensitive tasks such as working with large data sets, video rendering, and 3D modeling.
2. Memory operation mode:
- The Xeon Gold 6530 processor supports single-row, dual-row, and quad-row memory modes.
- In single-channel mode, each memory channel is served by a single memory module.
- In dual-channel mode, each memory channel is served by two memory modules working in pairs.
- In quad-channel mode, each memory channel is served by four memory modules working in pairs.
Using two- or four-stroke mode
allows you to increase memory bandwidth
and system performance.
3. Distribution of memory modules by channels:
- To achieve maximum performance, it is important to distribute memory modules evenly across all memory channels.
- It is not recommended to install an odd number of memory modules as this may result in reduced bandwidth.
4. Memory frequency and timings:
- Using memory modules with higher frequencies and lower timings can further improve system performance.
In general, installing more memory modules in the memory controllers of the Intel Xeon Gold 6530 processor can result in significant
increased performance, especially in memory bandwidth-sensitive tasks.
However, it is important to correctly distribute memory modules across channels and use memory modules with the appropriate frequency and timings.
How can we help?
For more detailed information about the DELL PowerEdge R760 server with DDR5 4800 or the DELL PowerEdge R750 server with DDR4 3200, you can visit our SERVER SOLUTIONS website . To find out the cost of the server, click on the DELL Server Configurator link .