Memory Benchmarks
AIDA64
First, we are starting out with AIDA64’s memory read performance. At JDEC default, the memory bandwidth is just 38GB/s, which is pretty slow, this RAM is capable of much more. By simply enabling the rated D.O.C.P. profile on the AMD Ryzen platform of DDR4-4400 we see this performance shoot up to 49GB/s a 30% increase in bandwidth. Keeping everything the same, and just overclocking to DDR4-4600 doesn’t give us a huge boost in bandwidth, only an increase of 157MB/s. We actually see a bigger increase in memory bandwidth by leaving it at DDR4-4400 and instead of increasing the FCLK frequency up to 2000MHz. That boosts the bandwidth up to 4GB/s more of bandwidth or 9% more. At 54GB/s this RAM is performing excecptionally well by simply raising the FCLK frequency.
Looking at write performance, at JDEC default we are getting just 21GB/s. By enabling the DDR4-4400 profile that the RAM is rated at write performance increases by 35% up to 28GB/s. Once again, just increasing the RAM speed further to DDR4-4600 doesn’t help. Instead, raising the FCLK frequency up to 2000MHz does the trick, and now our memory is pulling 31GB/s of write performance, an increase of 11%.
Looking at memory copy performance is pretty poor at the JDEC defaults, just 34GB/s. Enabling DDR4-4400 on this RAM improves that by 46% up to 50GB/s. For copy performance, we actually do see an increase in bandwidth at DDR4-4600 speeds, it’s a lot closer to just overclocking the FCLK frequency, but still overclocking the FCLK frequency resulted in the highest performance. It’s up 3% more in bandwidth overclocking the FCLK frequency.
SiSoftware Sandra 2021
In SiSoftware Sandra 2021 we are reporting the Aggregate Memory Performance, which is reported in GB/s. At default, that is 28GB/s, and by enabling DDR4-4400 that increases a whole 10GB/s to 38.74GB/s, a 37% increase. We do see a 2% increase by overclocking to DDR4-4600, but the highest percentage once again comes in with FCLK frequency at 2000MHz, where it is now 2.3% faster.
PassMark PerformanceTEST
We are using PassMark’s PerformanceTEST Memory Mark benchmark to report the overall score. This score is derived from testing database operations, memory read cached and uncached, available RAM, memory threaded, memory write, and memory latency performance metrics. At default, the score is 2806, and setting DDR4-4400 increases that to 3282, a 17% increase. Overclocking to DDR4-4600 has increased this a bit further by 1%. However, once again keeping the RAM at DDR4-4400 and just overclocking the FCLK frequency has yielded the highest increase.
Memory Latency
AIDA64
Memory latency is being reported in nanoseconds, and the lower score is better. This is a general workload type of RAM latency testing. At default, the latency is 81.2ns, we get a full 10ns improvement (down to 71ns) just by enabling DDR4-4400 profile on this RAM, which remember is CL19. This latency can be further reduced by overclocking to DDR4-4600, but the highest reduction in latency actually comes by way of overclocking the FCLK frequency up as much as possible, latency actually improves by 3ns, and this is with the same timings.
PassMark PerformanceTEST
In this PassMark PerformanceTEST Memory Latency test, we are testing a Linear performance test across the RAM. This is not typical, but it shows how a linear load would perform if everything was in sequence. We see a reduction in latency enabling DDR4-4400, and a further reduction at DDR4-4600 or FCLK 2000MHz, both are the same there, which is interesting.
In this PassMark PerformanceTEST Memory Latency test, we are testing a Random performance test across the RAM. This is a hard test for the RAM latency, as it reads and writes randomly across areas of the RAM, it’s a worst-case scenario type of torture testing for the RAM. Latency starts off very high at near 98ns, but enabling DDR4-4400 has reduced that a lot down to 86ns. It can be reduced even further by either overclocking to DDR4-4600 or just overclocoking the FCLK to 2000MHz yields the best result, down to 83ns.
In this PassMark PerformanceTEST Memory Latency test, we are testing a Random Range performance test across the RAM. Latency here starts off at near 70ns, and drops to 58ns at DDR4-4400. We see the lowest latency in this test at DDR4-4600, but it’s very close with the overclocked FCLK frequency results as well, which is improved over DDR4-4400.