I have observed two different sets of memory whose benchmark's don't seem to corroborate well. On one system I have DDR3 that benchmarks higher than the DDR4 I have in another machine. I would've expected the DDR4 to benchmark at around double the rating of the DDR3 and yet it benchmarks lower. Do these benchmarks translate in a linear manner to MB/sec?
Here's what I've observed:
1) Micron DDR3 (PC3-12800) 1.5V 11-11-11-28 running at 1600MHz -- Passmark rating: 2493
2) G.Skill DDR4 (PC4-25600) 1.35V 16-18-18-38 running at 2933MHz -- Passmark rating: 2058
I don't know what the MB/sec are for either of these, but it would appear from the Passmark rating that the DDR3 memory is roughly 21% faster than the DDR4 memory. What is going on here?
For most other hardware--CPU, graphics, HDDs--the Passmark scores are relatively close to what I'd expect, but these memory marks (and I have done these several times over the past few years) are beyond my interpretation. Can the benchmarks be converted to average throughput (in MB/sec) by some sort of formula?
Here's what I've observed:
1) Micron DDR3 (PC3-12800) 1.5V 11-11-11-28 running at 1600MHz -- Passmark rating: 2493
2) G.Skill DDR4 (PC4-25600) 1.35V 16-18-18-38 running at 2933MHz -- Passmark rating: 2058
I don't know what the MB/sec are for either of these, but it would appear from the Passmark rating that the DDR3 memory is roughly 21% faster than the DDR4 memory. What is going on here?
For most other hardware--CPU, graphics, HDDs--the Passmark scores are relatively close to what I'd expect, but these memory marks (and I have done these several times over the past few years) are beyond my interpretation. Can the benchmarks be converted to average throughput (in MB/sec) by some sort of formula?
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