Except these aren't ECC DIMMs, at least not on the bus-facing side of things. Most of the increased latency comes from the lowered voltage and the command buffering chip.Holy latency can't wait to see its impact on frame times when gaming. Hopefully it will be nothing but damn. I guess its the price we have to pay for ECC
$350 for 32GB of slow, bottom-of-the barrel DDR5? It's probably expected, given the typical pricing trends for new RAM generations, though I imagine a number of people will be tricked by the RGB lighting and higher frequency (compared to DDR4) into thinking this is a premium RAM kit. In reality, DDR5 starts at 4800 speed, so this is roughly comparable to the place 2133 serves in the market for DDR4.The memory runs at DDR5-4800 by default with 40-40-40-77 timings and a 1.1V DRAM voltage so no overclocking is necessary.
Maybe, maybe not. DDR4 may have lower first-word latency but CPU caches usually work with cache lines. DDR5-4800 may take 6.7ns fetching the first word from a row but it completes 16-words bursts 2ns faster, which makes DDR5 only 4ns slower for single bursts.The frequency is obviously higher, but that can only help so much with latency that high. I wouldn't be surprised if a $120 32GB kit of DDR4-3600 CAS 18 manages to outperform kits like this in games and many other workloads.
Perhaps, though seeing as even a lot of Z690 boards will be DDR4 models suggests that DDR4 may still be the norm for most high-end PCs this generation, and I'm not sure that would be the case if DDR4 left much performance on the table. Even if it were to perform similar or slightly better, it really doesn't seem like a "low-end" DDR5 kit like this is going to be worth the massive premium over DDR4, at the very least. Of course, that goes for existing high-performance DDR4 kits as well, as the performance differences for paying two or more times as much for high-end RAM tend to be imperceptible in real-world workloads.Maybe, maybe not. DDR4 may have lower first-word latency but CPU caches usually work with cache lines. DDR5-4800 may take 6.7ns fetching the first word from a row but it completes 16-words bursts 2ns faster, which makes DDR5 only 4ns slower for single bursts.