What is the number of memory controllers 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 equal to 4800 MHz x 64 bits/channel / 8 bits/byte = 38,400 MB/s.
- In dual-channel mode, the bandwidth is doubled, reaching 76,800 MB/s.
- In the four-channel mode, the bandwidth increases four times, up to 153,600 MB/s.
- In eight-channel mode, the bandwidth increases eight times, up 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 a theoretical bandwidth.
Actual throughput may be lower due to delays and other factors affecting system performance.
The effect 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 are used, the higher the bandwidth of the memory subsystem, which can lead to a significant increase in performance, especially in tasks sensitive to memory bandwidth, such as large data sets, video rendering, and 3D modeling.
2. Memory mode:
- The Xeon Gold 6530 processor supports one-core, two-core and four-core memory modes.
- In one-time mode, each memory channel is served by one memory module.
- In dual mode, each memory channel is served by two memory modules working in pairs.
- In quad mode, each memory channel is served by four memory modules working in pairs.
Using a two-hour or four-hour mode
allows you to increase the bandwidth of the memory
and system performance.
3. Distribution of memory modules by channels:
- To achieve maximum performance, it is important to evenly distribute memory modules 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 a higher frequency and lower timings can further increase 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 tasks sensitive to memory bandwidth.
However, it is important to correctly allocate memory modules by channel 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 find it on our website SERVER SOLUTIONS , to find out the cost of the server, go to the DELL Server Configurator link .