You need a certain amount of capacity to hit interleaving steps. This means faster sustained speed, so it runs hotter. With more flash you're switching more dies so maximum power draw is also somewhat higher. Peak performance is at four dies per channel but going higher than this can also pull more power.One brief question: does SSD capacity have an effect on temperatures? I want to know whether I should go for a 1 TB or a 2 TB model, depending on that.
The A2000 is four-channel so will run cooler than eight-channel. Also, the A2000 used CUA memory while the SN750 uses BiCS, and CUA is generally more efficient.As I specified in my first post, I've tested a different model (Kingston A2000), which I borrowed from someone, to see if the drive is the culprit and whether lower temperatures were possible in that type of laptop - and Kingston A2000 stayed significantly cooler (40-45 in idle, 60-65 in intensive load).
400-500 MB/s is easily achievable, and that's just 5Gbps for USB.Yes, I need sustained write performance, but not very high. That is why I misinterpreted the information Sean has provided in his review: because SN750 2TB has an average write speed of 1400 MB/s after cache, I assumed, when Sean said that it thermally throttled after several hundred of GB written, that it happened at the average speed of 1400 MB/s - while I need sustained write performance only in the USB 3.0 range, of maximum 400-500 MB/s.
The SN570 is DRAM-less, four-channel, and uses newer flash than the SN750. Half the channels means lower sustained performance, as well. It's going to run cooler than the SN750.I agree, but mine stood at 60 and hit 80 even in lighter writing loads. Hence, why I became determined to replace it, since I've seen from the reviews that SN750 is one of the hottest SSDs even in ideal conditions.
Well, Sean's reviews indicated a maximum temp of 61 degrees for SN570 in a desktop and I've seen similar results in other reviewing tests from youtube. Does your own information contradicts this data?
The P41 Plus is basically a "new" 670p. It's DRAM-less unlike the 670p but the basic tech is quite similar. It'll be more efficient as it's using a newer controller and no DRAM. The downside is that it uses QLC. Also, these drives perform best at 25-75% drive utilization, where other QLC like P3/P3 Plus makes more sense for storage (at 4TB anyway). But the latter suffers terribly from sustained writes as that's usually the case with QLC.Also, checking the types of controller you mentioned above brought out Solidigm P41 plus. I've read Shane's review and it says that the 2 TB version "measured it at 34C when idle. After writing 500GB of data, the drive peaked in the mid-60Cs". A 400 MB/s sustained write performance, after filling out a 270 GB of cache, is good enough for me in this regard. Therefore, Shane says "we would absolutely recommend the P41 Plus for laptop use". Would you agree with that assessment?
Which is why a four-channel drive is optimal since you reach peak performance with fewer dies and then flatline with only minor power increases. Simply having more flash isn't making things hotter (for one thing, you could have more packages which dissipates heat better) per se.If higher capacity drives pull more power and therefore get more hot, I am leaning between a 1 TB SN570 and a 2 TB Solidigm P41 Plus (because 1 TB Solidigm P41 Plus has only 250 MB/s speed after cache, which is a bit slow). If not, I could go for a 2 TB SN570 or Solidigm.
Typical E12(S) drive. These all changed a ton over the years.There is also Silicon Power XD80, but I've heard that Silicon Power downgraded some models later, so they won't perform as well as the initial reviews indicate, which makes me hesitate about them