WD Black SN770 1tb Gen4 NVMEs for Sale

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t3chg33k said:
Yeah, unfortunately my laptop's secondary drive has no clearance with respect to the shroud that runs over it. It has space at most to only apply a thermal pad which of course will only make things worse. My primary drive has a thermal pad and heatsink and if I were to swap the two, I am pretty sure the temperatures would be much better.
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Maybe you could someday swap both drives, and make this one primary, as it has slightly better speeds too!
But anyways, it's all good this way as well, cuz atmost you would place some games / softwares on this drive, and running a game / app wont put it to 100% load, hence temps won't go so high while in practical usage scenarios.
 
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TechnologyHell said:
Maybe you could someday swap both drives, and make this one primary, as it has slightly better speeds too!
But anyways, it's all good this way as well, cuz atmost you would place some games / softwares on this drive, and running a game / app wont put it to 100% load, hence temps won't go so high while in practical usage scenarios.
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Practically don't see much difference between the two in terms of usage. For gaming, both will operate close to what DirectStorage is capable of. However, having a DRAM drive as the boot drive is still a better option.
 
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t3chg33k said:
Practically don't see much difference between the two in terms of usage. For gaming, both will operate close to what DirectStorage is capable of. However, having a DRAM drive as the boot drive is still a better option.
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HMB is as good as dram on board the drive. Only issue is that it is affected by windows as seen in a recent windows 11 24H2 update which disabled/caused issues with HMB feature of SN770 drives resulting in BSOD but WD promptly released a firmware fix.
 
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guest_999 said:
HMB is as good as dram on board the drive. Only issue is that it is affected by windows as seen in a recent windows 11 24H2 update which disabled/caused issues with HMB feature of SN770 drives resulting in BSOD but WD promptly released a firmware fix.
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It is not exactly as good but good enough. Had read about it previously on one of the sites, so sharing here for reference as well.
sabrent.com

DRAM & HMB

SSDs often, but not always, come with DRAM for caching. While it’s possible to embed the DRAM into the controller, more commonly this memory lives in one or more packages external to the controller. These can be standard DDR3 or DDR4, or be a low-power form of DRAM to reduce power consumption...
sabrent.com sabrent.com
 
t3chg33k said:
It is not exactly as good but good enough.
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It does depend on the controller too. WD SN770 is able to match/beat (even if by a few seconds/fraction of second) 980 pro in some common real life usage tests precisely because of this.
www.techpowerup.com

WD Black SN770 1 TB Review - So Impressive

The competitively priced Western Digital WD Black SN770 achieves impressive performance results that match the more expensive Samsung 980 Pro, WD Black SN850, and Kingston KC3000. It seems WD has found a solution to overcome the limitations of DRAM-less designs—very impressive.
www.techpowerup.com www.techpowerup.com
 
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t3chg33k said:
Received the drive in 4 days through Delhivery. It was uninitialized with 0 writes as stated. It was on firmware version 731030WD which I promptly updated.
View attachment 227925

It benchmarks better than my primary 2 TB Samsung 990 Pro drive.
View attachment 227927

I had transferred about 400 GB from the 990 Pro to the SN770. It is close to 40 degrees when idle and 70 under load, which is okay considering both drives are in a laptop. I had also taken a screenshot of the write performance but deleted it unintentionally. It was about 2500 MBps peak and the cache seemed to give way at around 300 GB, after which the speed was around 410 MBps, which is as expected considering it uses high quality Kioxia BiCS NAND.
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Just out of curiosity, how is your 990 Pro benching so low?

Here's mine:

1.png
 
TechnologyHell said:
or is it that the samsung is running on Gen3 and wd on Gen4 ??
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It says that the Samsung is his primary drive, so I'm assuming that the Samsung is also on Gen 4?

If the Samsung is indeed running on Gen 3, then I doubt he would have done an apples-to-apples comparison, because it'll obviously be slower then.
 
PunkX 75 said:
Just out of curiosity, how is your 990 Pro benching so low?

Here's mine:

View attachment 227938
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On the laptop, the PCIe 4x4 bandwidth is certainly getting shared. However, the benchmark was still too low. I couldn't put a finger on it but later in the day, with the extra space, I decided to finally enable over provisioning on the 990 Pro which is when I realised that I had Bitlocker enabled, which is now the case by default for Windows 11 installations.

After disabling Bitlocker, it seems that it has about a 40% overhead, at least on peak performance.

SSD Benchmark.png


The CrystalDiskMark benchmark is more representative, so the 990 Pro is about 50% faster sequentially and about the same for random data.

990.png


770.png
 
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t3chg33k said:
I had Bitlocker enabled, which is now the case by default for Windows 11 installations.
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This is true only for Home edition as far as I know. I however enable bitlocker on any drive in warranty as it means no tension of any data leak/recovery when giving the drive/device for rma under warranty.
 
guest_999 said:
This is true only for Home edition as far as I know. I however enable bitlocker on any drive in warranty as it means no tension of any data leak/recovery when giving the drive/device for rma under warranty.
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My laptop's factory image is for Home edition, so that caused it to be enabled by default when I reset everything a few months ago.

In my case, I don't mind system and game files being unencrypted. Mostly concerned about photos, videos, documents which are all synced on OneDrive. I am using the drives unencrypted now, but have OneDrive installed on a Veracrypt container.
 
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