With the listing of Intel 12th generation processors and 600 series chipsets, the consumer PC market has finally sounded the horn of popularizing ddr5 memory, and the major DRAM particle and memory module manufacturers have also been rubbing their hands Even though AMD's action was half a beat slow, the company disclosed the planning of the processor + 600 series motherboard chipset of the new generation Am5 platform during the keynote speech of Computex 2022, which means that the popularization of ddr5 memory in the PC market is being further accelerated.
[preface]
Information map (via crucial official website)
The current mainstream DDR4 memory standard in the market can be traced back to 2011. After a long development, we have gradually seen that 3200+ mt/s has become the first choice for many game players from the initial frequency of 2133 mt/s formulated by JEDEC.
At the same time, some manufacturers are also trying to meet the needs of overclocking enthusiasts to challenge higher frequencies through carefully selected particle components. However, just like the transformation from DDR3 to DDR4, the upgrade from DDR4 to ddr5 also brings more advantages.
[unpacking]
Sheath model ct2k16g48c40u5 / origin label Malaysia
Earlier, we received a package from yingruida. We thought it might be 32gb*2 @ ddr4-3600 RGB vest. However, after disassembly, I found that there was a pair of 16gb*2 @ ddr5-4800 desktop memory modules inside.
Nominal frequency ddr5-4800 (pc5-38400) / working voltage 1.1V
From the appearance, the biggest change of ddr5 desktop memory module compared with the previous generation DDR4 platform is that the power management (PMIC) chip is moved from the motherboard to the module PCB closer to the DRAM particles.
In the "forehead" area of the ddr5 memory PCB, you can see the Renesas "p8911y0 - z001gr - 2130kp" power management chip surrounded by inductance, resistance, capacitance and other chip components, and the edge is an 8-pin SPD ROM with factory memory operating parameters preset.
Then came the "d8bnj ”(sampling) particles, single 16GB (2GB), single side × 8 to form a 16GB @ ddr5-4800 capacity.
It is worth mentioning that, on the basis of splitting the 64 bit width of a traditional single memory into two groups of 32 bits, the ddr5 standard also introduces on-chip ECC error correction codes (32-bit data per channel + 8-bit ECC) for DRAM.
Considering that we only have DDR4 desktop platform on hand, and it is not convenient for logistics in other places in special times, we first asked our friends in the local computer city whether there are Intel 600 series ddr5 motherboards in stock in the store? Unfortunately, it received a negative answer.
[platform introduction]
Fortunately, after some inquiry, the old man in the next district said he could help borrow the z690 D5 motherboard, so Xiaobian took the time to fly to the scene.
The test platform selects i5-12400 compatible with ddr5-4800 / ddr4-3200 memory. This alder lake-s CPU adopts a 6p + 0e pure large core design (6c / 12t) and integrates UHD 730 core display.
Because the market will be powered off and cleared at the point of arrival, in order to save time, the system uses [windows] pre installed on the inrida mx500 4tb SATA SSD( https://microsoft.pvxt.net/x9Vg1 ) 1121h2.
Then, in an open environment, ASUS Rog Strix z690-e gaming Wi Fi (D5) motherboard + tower CPU radiator were used for a simple run (without air conditioning).
According to the CPU-Z information, when two 16GB ddr5-4800 memories are inserted, the CPU-Z will be recognized as "four channels".
The reason is that ddr5 splits the traditional single 64 bit width into two internal groups of @ 32 bits to improve the performance during concurrent access.
The "dual channel" Ingrid 2 × 16GB @ ddr5-4800 desktop memory module, its working voltage has been reduced from 1.2V in DDR4 era to 1.1V.
Referring to the information in the memory SPD, the timing at 4800 mt/s is cl40-39-39-77-116 (but the CR given by the motherboard by default is 2t).
It can be seen that when the performance mode is turned on and the heat dissipation is good, the multi-round CPU-Z evaluation score of this i5-12400 processor is about 700 points for a single core / 5000 points for a multi-core.
In addition, when a single / dual 16GB @ ddr5-4800 memory is inserted (aida64 is identified as "dual channel" / "four channel"), although the delay data after multiple rounds of testing fluctuates slightly, the overall bandwidth of memory read / write and copy operations is almost doubled.
[productivity assessment]
In terms of productivity, the familiar cinebench R20 / R23 is selected here. However, under the same ddr5-4800 frequency, the multi-core performance of single and dual 16GB @ ddr5-4800 memory does not open the gap visible to the naked eye.
Single and dual 16GB @ ddr5-4800 memory, cinebench R20 scores 4700+ and cinebench R23 scores 12000+.
[ddr4-3200 platform comparison]
The choice of i5-12400 + DDR4 platform should be relatively easy. A friend's store happens to have the b660m-d3h D4 motherboard of Shengqi.
The self purchased ballistix 8GB memory is selected × 2 @ ddr4-3200 set, and a set of friends' 16GB in the store × 2. The same frequency package, with the timing of cl16-18-18-36-54 (command ratio / Cr 2t).
At 8GB × 2. In the case of dual channels, single and dual 16GB @ ddr4-3200, the CPU-Z processor single core / multi-core performance evaluation is still about 700 / 5000.
The two sets of ddr4-3200 memory are designed for single and double sides respectively. However, the evaluation data of multi round read-write and copy operations are inevitably affected by the CPU intelligent scheduling strategy.
In terms of productivity, the evaluation results of cinebench R20 under 8gb*2 / 16gb*2 @ dual channel ddr4-3200 memory configuration are basically the same.
However, due to the sudden change of weather and temperature on that day (open platform / no air conditioning), the CPU frequency scheduling strategy suddenly has a significant impact on the error in the 16gb*1 @ single channel memory mode.
When it comes to the cinebench R23, the CPU single core evaluation data of the three memory configurations are all 1700+. In addition 2 × 8GB / 2 × The multi-core performance in the 16GB dual channel configuration is not different. As for 1 × The low score in the 16GB single channel configuration can only wait for the opportunity to carry out more rigorous verification tests.
[summary chart]
In the CPU-Z processor test, the single and dual channel configuration of DDR4 / ddr5 has little impact, and the error caused by data jitter is also extremely small.
For aida64 memory test, the delay of a single 16GB @ ddr5-4800 memory is 30% higher than that of 16GB @ ddr4-3200. However, the rates of read, write and copy increased by about 27% / 46% / 46% respectively.
Plus a 16GB memory to form a dual channel, the delay of ddr5-4800 memory is 40% higher than that of ddr4-3200 platform. However, the rates of read, write and copy increased by about 40% / 42% / 46% respectively.
It should be noted that since the default settings are used on the motherboard and the multi round memory rate / delay test data of aida64 fluctuate greatly, the above data do not have a strict reference.
Even so, its performance is quite close to the official theoretical data of "50% acceleration" and "87% bandwidth growth". If the test platform is placed in a chassis with good air duct and retested in an air-conditioned environment, there may be a brighter surprise.
Cinebench R20 score: ddr4-3200 memory has 8 / 16GB dual channel configuration, and the score gap is negligible. However, in the 16GB single / dual channel configuration, the ddr5-4800 platform leads by about 18% / 12% respectively.
Cinemanche R23 run points: the 8 / 16GB dual channel configuration gap of ddr4-3200 memory can be ignored, and the ddr5-4800 platform with 16GB single / dual channel configuration is about 29% / 21% ahead respectively. (considering the large fluctuation of cinebench's running points, the above data are only shown in Figure 1)
[summary]
Although amd only released the Reebok 7000 series Am5 desktop processor + 600 series motherboard in the form of PPT during the keynote speech of Computex 2022 this week, the market will become more lively this autumn as the consumer PC field makes every effort to move towards ddr5 / PCIe 5.0 platform.
At that time, if there is an opportunity, Xiaobian will also compare the performance of Intel / AMD platforms in more application scenarios such as core display games in more detail. As for the protagonist of this article, although inrida also provides a single 8GB starting capacity, the 16GB version is the "complete body" of ddr5 memory.
Finally, given that the price of the new generation of memory is steadily decreasing, friends with limited budgets may wish to use a single high-capacity version first. If necessary in the future, you can choose another machine to add a high-frequency ddr5 memory of the same model or directly upgrade to a more mature technology.