Recently, well-known hardware broke the news KOMACI_ENSAKA found in the Eurasian Economic Commission (EEC) documents that Intel is about to launch a new generation Tiger Lake processor for thin and light, and supports LPDDR5.
As we all know, the running memory standard of the thin and light version on the market is LPDDR3, the memory standard used in the game is DDR4, and LPDDR4 and LPDDR4X are mostly used in mobile phones, and the notebook is not equipped. Because DDR 4 memory has the advantage of high frequency, low frequency performance is not even as good as DDR3, so LPDDR 4 is not meaningful in notebooks. Performance-oriented notebooks will come directly with normal-voltage DDR 4 memory sticks, such as the 15-inch Macbook Pro, and the pursuit of thin and light notebooks will still use LPDDR 3, such as the MacBook Air.
So the question is, what is LPDDR5? What is the difference between it and LPDDR3?
What is LPDDR5?
Previously, the JEDEC Solid State Technology Association released the LPDDR5 running memory standard. The LPDDR5 has a bus speed of 6400 MT/s, which is twice the first version of LPDDR4 and 50% faster than the high-frequency version of LPDDR4’s 4266MT/s. To achieve this performance boost, the LPDDR5 architecture has been redesigned to support up to 16 Banks architecture and multi-clock architecture.
If you match the 64bit BUS that is common to high-end smartphones, you can transfer 51.2GB of data per second. If you switch to a 128bit BUS of a PC, it should be a problem if you break 100GB per second.
LPDDR5 reduces overall data consumption by introducing two data-copy and Write-X commands based on operations that reduce data transfer. To meet the data reliability requirements of automotive and related markets, LPDDR5 introduces link error correction code (ECC) support on the interface between SoC and DRAM.
The voltage of LPDDR5 is 1.1V like LPDDR4X and the signal voltage is 250mV. In the idle state, the current will be reduced by 40%, which can greatly reduce power consumption.
According to IC vendor Synopsys, LPDDR5 will introduce a WCK differential clock, similar to GDDR5, to boost the frequency without adding pins.
LPDDR5 VS LPDDR3
Both LPDDR3 and LPDDR5 are memory standards for use on laptops. What has been said about LPDDR5 above, let us first understand what is LPDDR3, and then compare the difference between the two.
LPDDR3 is one of the existing memory standards and it is the third generation of LPDDR RAM technology. Its data rate reaches 1600Mbps, which is 50% faster than LPDDR2.
The difference between LPDDR5 and LPDDR3
The difference between LPDDR5 and LPDDR3 is divided into the following points:
- Bandwidth, LPDDR5 has a minimum bandwidth of 6400 MBit per second, while LPDDR3 has a bandwidth of 3200 Mbits per second, the former being twice as large as the latter.
- WCK clock, LPDDR5 adds WCK clock function to enhance performance. The WCK clock operates at twice or four times the operating clock frequency.
- ECC function, ECC can perform error correction during read and write operations.
- For channels, LPDDR5 has 16 banks per memory channel, while LPDDR3 has only 8 banks per channel. LPDDR5 uses a single 32-bit channel, while LPDDR3 uses a 16-bit dual channel.
- In DSM mode, the DSM mode on LPDDR5 can reduce the IDD current by more than 40%. This mode is activated in either the self-refresh state or the idle state. Under ideal conditions, DSM mode disables power to all input and output buffers and all internal circuitry.
- For voltage, LPDDR5 voltage is 1.1V, and LPDDR3 voltage is 1.2V
On the whole, LPDDR5 performance is significantly improved, and power consumption is much lower than the previous generation. In addition, it has added some new technologies. Next-generation storage technology is the key to driving high-quality images and video, as well as ultra-high-definition gaming and machine learning.
Intel is not just for follow-up technology
Since LPDDR5 represents the next generation of storage technology, there are bound to be many vendors to follow up on this technology, and Intel is no exception. Why do you say that?
The memory is equivalent to the transfer station for the computer. During the use of the computer, the program runs in the memory. The function of the memory is to temporarily store the computing data of the CPU and the data exchanged with the hard disk and other devices.
LPDDR5 increases the bandwidth, which helps to increase the speed of the computer and reduce the CPU read and write time to improve the efficiency of the whole machine. For example, when you want to play a 3A masterpiece, LPDDR3’s memory loading game takes 54 seconds, and LPDDR5 may take 10 seconds.
In this way, LPDDR5 helps computers improve performance. Intel introduced a processor that supports LPDDR5 not only to follow up the technology, but also to seize the market, introduce new technologies, and attract more PC vendors to cooperate to increase revenue.
AMD is a big competitor to Intel and has no news to support LPDDR5 processors. This means that Intel can take the lead, occupy more CPU market, and give opponents a horse in advance.
Intel TIger Lake is equivalent to skipping LPDDR4 and directly adding support for LPDRR5. Another highlight of its work is the 10nm process, which does not squeeze toothpaste directly from AMD. The AMD Athlon processor currently supports DDR4 memory specifications, and the Renoir APU (7nm) next year supports LPDDR4X. They are stronger in the two, and they are still not sure.
For PC manufacturers, in the marketing, the choice of Intel processors supporting LPDDR5, can add new selling points to the product, in order to attract more users to buy.
For users, you can use a better performance computer, thanks to Intel’s processor introduced support for LPDDR5. Users will rely more on Intel’s CPUs and the brand stickiness will increase.