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Model: WD_BLACK 4TB SN7100 NVMe Internal Gaming SSD Solid State Drive - Gen4 PCIe, M.2 2280, Up to 7,000 MB/s - WDS400T4X0E [New Version]
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For laptop users or people with servers and raid setups that want more efficiency and less heat:
The SN7100, released in late 2024, is a much newer SSD with considerably more advanced 218-layer BiCS8 TLC NAND Flash. The SN850X was released in Mid-2022 and features a the 3 generations older 112-layer BiCS5 TLC NAND Flash. What this means is that the memory on the SN7100 occupies much less space. In fact I think the 1 and 2TB version only has ONE package on the PCB whereas the 4TB version has two. The SN850X on the other hand has twice as many. The SN850X also has a DRAM chip for caching whereas the SN7100 does away with it and instead rely on a small portion of NAND memory space in SLC mode for that. What that all means is that the SN7100 draws a lot less power -- 4.5 watts (max) / 0.095 watts (idle) vs 7.4 watts (max) / 1.1 watts (idle). This makes the SN7100 far superior for laptop applications where battery life is a concern.
In terms of raw performance, both are almost identical, with the SN7100 reaching 7,000~7,250 MB/s (read) / 6,700~6,900 MB/s (write) depending on capacity. The SN850X does 7,200~7,300 MB/s (read) / 6,300~6,600 MB/s (write), which is marginally faster in read speeds but slower in write speeds. Both drives are limited mostly by the PCIe 4.0 controllers -- the SN7100 having a 4ch x 2400 MT controller, whereas the SN850X has an 8ch x 1200 MT controller. Both are rated for 2400 TB written in endurance.
Given the similar performance but much lower power consumption (and heat output) of the SN7100, I'll say that the SN7100 is clearly the better drive. That said, if you have them in a Desktop PC, I doubt you'll care which one you have.
Our community has rated this post as helpful. If you agree, why not thank KnockKnockWhosThere
For laptop users or people with servers and raid setups that want more efficiency and less heat:
The SN7100, released in late 2024, is a much newer SSD with considerably more advanced 218-layer BiCS8 TLC NAND Flash. The SN850X was released in Mid-2022 and features a the 3 generations older 112-layer BiCS5 TLC NAND Flash. What this means is that the memory on the SN7100 occupies much less space. In fact I think the 1 and 2TB version only has ONE package on the PCB whereas the 4TB version has two. The SN850X on the other hand has twice as many. The SN850X also has a DRAM chip for caching whereas the SN7100 does away with it and instead rely on a small portion of NAND memory space in SLC mode for that. What that all means is that the SN7100 draws a lot less power -- 4.5 watts (max) / 0.095 watts (idle) vs 7.4 watts (max) / 1.1 watts (idle). This makes the SN7100 far superior for laptop applications where battery life is a concern.
In terms of raw performance, both are almost identical, with the SN7100 reaching 7,000~7,250 MB/s (read) / 6,700~6,900 MB/s (write) depending on capacity. The SN850X does 7,200~7,300 MB/s (read) / 6,300~6,600 MB/s (write), which is marginally faster in read speeds but slower in write speeds. Both drives are limited mostly by the PCIe 4.0 controllers -- the SN7100 having a 4ch x 2400 MT controller, whereas the SN850X has an 8ch x 1200 MT controller. Both are rated for 2400 TB written in endurance.
Given the similar performance but much lower power consumption (and heat output) of the SN7100, I'll say that the SN7100 is clearly the better drive. That said, if you have them in a Desktop PC, I doubt you'll care which one you have.
No dram no deal. As soon as you fill it up the speed goes down without it. Not worth the small savings in this price range to go dram less.
not necessarily. I see 2 uses of this. 1) laptops where low power usage and large space is very important 2) storage where few writes and lots of reads e.g. video servers
not necessarily. I see 2 uses of this. 1) laptops where low power usage and large space is very important 2) storage where few writes and lots of reads e.g. video servers
So, just to clarify, I'd be using this on a desktop where I'd primarily store PlayOn files on it, but it would be my Windows 11 drive. Am I fine, or should I get a 2TB drive with dram?
Right now, my shopping cart has a Predator GM7 4TB and a Samsung 990 Pro 2 TB.
I'm not married to anything, but I've got everything for my build except for a motherboard. The CPU is a 9800x3D from that Micro Center deal. And I am someone who has eight or nine 20+ TB external hard drives sitting around. So, if I had the extra space, I'd use it, but I don't want to bottleneck my main drive with an SSD that's problematic.
What 4TB m.2 drives in this price range actually have DRAM? In my fairly deep searching, I haven't been able to find a single one under like $300
With some occasional exceptions, generally none that you'd want. For drives with DRAM, you're generally looking at the WD SN850X, Samsung 990 Pro, Crucial T500, or something even newer and more expensive. There are some cheaper drives with DRAM but they usually have questionable controllers. That said, most people don't really need a drive with DRAM.
Quote
from jidady
:
So, just to clarify, I'd be using this on a desktop where I'd primarily store PlayOn files on it, but it would be my Windows 11 drive. Am I fine, or should I get a 2TB drive with dram?
Right now, my shopping cart has a Predator GM7 4TB and a Samsung 990 Pro 2 TB.
I'm not married to anything, but I've got everything for my build except for a motherboard. The CPU is a 9800x3D from that Micro Center deal. And I am someone who has eight or nine 20+ TB external hard drives sitting around. So, if I had the extra space, I'd use it, but I don't want to bottleneck my main drive with an SSD that's problematic.
Most people aren't going to notice a difference.
Quote
from KnockKnockWhosThere
:
The SN850X also has a DRAM chip for caching whereas the SN7100 does away with it and instead rely on a small portion of NAND memory space in SLC mode for that.
Both drives (and nearly all modern consumer SSDs) have a pSLC cache. Instead of onboard DRAM, the SN7100 uses HMB to steal a tiny bit of system memory. DRAM/HMB is used to store a copy of the mapping table (FTL) and mostly benefits random reads. The pSLC cache is used to greatly improve write performance.
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Listen up everyone, There's pro's and con's to all the storage out there regardless of brand or specs. This is where you do the research and pick based on your needs not other people's opinions. For me in this size and price range its better to spend alittle more and get dram. Lets be real here, who buys this size for just a few games and never squeezes the cache out with storage of files. Pinch your pennies on the smaller drives but spend the extra dough for peace of mind. Your pron collection deserves the best. LOL!
What 4TB m.2 drives in this price range actually have DRAM? In my fairly deep searching, I haven't been able to find a single one under like $300
I bought 4 tb 990 Pro in November for 220. I also bought a 4th 990 Pro during prime day used + 30% off for 170. It was brand new with 0 writes.
It runs hot in the back of my itx motherboard though. 80c under load in the back, but the front one maxes at 55. Maybe shouldve got dram less or a gen 3 one for storage.
What 4TB m.2 drives in this price range actually have DRAM? In my fairly deep searching, I haven't been able to find a single one under like $300
Kioxia for Dell drives, even if slightly used from eBay. Those drives are actually faster and more reliable than even the Samsung 990 or WD SN850+ drives. They do get a little hot for small portables like the Legion Go/ROG Ally though. Go save yourself some money.
No dram no deal. As soon as you fill it up the speed goes down without it. Not worth the small savings in this price range to go dram less.
exactly why i got the samsung 990 pro.. sadly read performace suffers too as cacheless fills up which is why we bought nvme 4 vs nvne 3. buying cacheless is like buying nvme 1.1 when full with millions of small files
not necessarily. I see 2 uses of this. 1) laptops where low power usage and large space is very important 2) storage where few writes and lots of reads e.g. video servers
Use two of these in my PLEX server. They run 24/7/ 365 and run well. But transferring data to them does suck for big files or lots of files
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The SN7100, released in late 2024, is a much newer SSD with considerably more advanced 218-layer BiCS8 TLC NAND Flash. The SN850X was released in Mid-2022 and features a the 3 generations older 112-layer BiCS5 TLC NAND Flash. What this means is that the memory on the SN7100 occupies much less space. In fact I think the 1 and 2TB version only has ONE package on the PCB whereas the 4TB version has two. The SN850X on the other hand has twice as many. The SN850X also has a DRAM chip for caching whereas the SN7100 does away with it and instead rely on a small portion of NAND memory space in SLC mode for that. What that all means is that the SN7100 draws a lot less power -- 4.5 watts (max) / 0.095 watts (idle) vs 7.4 watts (max) / 1.1 watts (idle). This makes the SN7100 far superior for laptop applications where battery life is a concern.
In terms of raw performance, both are almost identical, with the SN7100 reaching 7,000~7,250 MB/s (read) / 6,700~6,900 MB/s (write) depending on capacity. The SN850X does 7,200~7,300 MB/s (read) / 6,300~6,600 MB/s (write), which is marginally faster in read speeds but slower in write speeds. Both drives are limited mostly by the PCIe 4.0 controllers -- the SN7100 having a 4ch x 2400 MT controller, whereas the SN850X has an 8ch x 1200 MT controller. Both are rated for 2400 TB written in endurance.
Given the similar performance but much lower power consumption (and heat output) of the SN7100, I'll say that the SN7100 is clearly the better drive. That said, if you have them in a Desktop PC, I doubt you'll care which one you have.
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Our community has rated this post as helpful. If you agree, why not thank KnockKnockWhosThere
The SN7100, released in late 2024, is a much newer SSD with considerably more advanced 218-layer BiCS8 TLC NAND Flash. The SN850X was released in Mid-2022 and features a the 3 generations older 112-layer BiCS5 TLC NAND Flash. What this means is that the memory on the SN7100 occupies much less space. In fact I think the 1 and 2TB version only has ONE package on the PCB whereas the 4TB version has two. The SN850X on the other hand has twice as many. The SN850X also has a DRAM chip for caching whereas the SN7100 does away with it and instead rely on a small portion of NAND memory space in SLC mode for that. What that all means is that the SN7100 draws a lot less power -- 4.5 watts (max) / 0.095 watts (idle) vs 7.4 watts (max) / 1.1 watts (idle). This makes the SN7100 far superior for laptop applications where battery life is a concern.
In terms of raw performance, both are almost identical, with the SN7100 reaching 7,000~7,250 MB/s (read) / 6,700~6,900 MB/s (write) depending on capacity. The SN850X does 7,200~7,300 MB/s (read) / 6,300~6,600 MB/s (write), which is marginally faster in read speeds but slower in write speeds. Both drives are limited mostly by the PCIe 4.0 controllers -- the SN7100 having a 4ch x 2400 MT controller, whereas the SN850X has an 8ch x 1200 MT controller. Both are rated for 2400 TB written in endurance.
Given the similar performance but much lower power consumption (and heat output) of the SN7100, I'll say that the SN7100 is clearly the better drive. That said, if you have them in a Desktop PC, I doubt you'll care which one you have.
Our community has rated this post as helpful. If you agree, why not thank Jankmeat
Right now, my shopping cart has a Predator GM7 4TB and a Samsung 990 Pro 2 TB.
I'm not married to anything, but I've got everything for my build except for a motherboard. The CPU is a 9800x3D from that Micro Center deal. And I am someone who has eight or nine 20+ TB external hard drives sitting around. So, if I had the extra space, I'd use it, but I don't want to bottleneck my main drive with an SSD that's problematic.
Right now, my shopping cart has a Predator GM7 4TB and a Samsung 990 Pro 2 TB.
I'm not married to anything, but I've got everything for my build except for a motherboard. The CPU is a 9800x3D from that Micro Center deal. And I am someone who has eight or nine 20+ TB external hard drives sitting around. So, if I had the extra space, I'd use it, but I don't want to bottleneck my main drive with an SSD that's problematic.
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https://slickdeals.net/f/18472072-4tb-crucial-t500-gen4-nvme-m-2-internal-solid-state-drive-ssd-200-free-shipping
It runs hot in the back of my itx motherboard though. 80c under load in the back, but the front one maxes at 55. Maybe shouldve got dram less or a gen 3 one for storage.
Use two of these in my PLEX server. They run 24/7/ 365 and run well. But transferring data to them does suck for big files or lots of files
Leave a Comment