Intel confirms 8MB bug in 320 Series SSDs (fix available)

Matthew DeCarlo

Posts: 5,271   +104
Update (8/18) -- Fix now available: Three weeks after replicating the so-called "8MB bug," Intel has published a firmware update (4PC10362) that solves the issue. Unfortunately, there doesn't seem to…

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Posts: 37   +2
I had settled on this drive, but then eventually changed my mind and got the C300 instead. Glad I did!


I've got one of these drives, the 120GB version. No problems yet, but my computer hasn't crashed either. I hope they can fix this with a firmware update soon. Backup ftw!


Posts: 648   +58
That's a pretty serious error bug to me and further helps me decide to wait on SSD's. Maybe when the prices come down, the drives get bigger and the technology matures a bit more...


Posts: 144   +0
I read the title and a few sentences and i was thinking "you loose 8mb out of the entire ssd space" lol what sarcasm that would have been


Posts: 783   +0
:( I got the 600 GB version. Hope I don't ever see the problem.

Went through something similar a few years back with a pair of Seagates that had a firmware bug ... one bricked and the other is still running. Hopefully this is a firmware problem that Intel will be able to resolve.


Posts: 180   +10
I am pretty sure i ran into these same firmware issues. I had a customer who had mission critcal data that wasn't backed up on one of these (of course) so what i ended up doing was putting the board from the dead drive onto the working drive, updating the firmware on there, then putting the board back. it worked :)


Excellent info for my torture tests!

I have torture tested Vertex-1 and Vertex-2 drives for months by Defragging the drives needlessly and doing everything possible to destroy them "EXCEPT" update the firmware

A quick read at the OCZ forum will show you that the majority of failures occures when updating the firmware!

I have also used XP-Pro continuously without ANY of the recommended OCZ tweaks and have yet to cause any of my SSD's to malfunction

I recommend that YOU also torture test any NEW SSD for at least a month before you trust your data to ANY SSD on the market

Finding a problem within the normal 30 day return policy is the best advice out there

If it does not fail under continuous defrags, no-tweaks, nonSSD aware Operating Systems, firmware updates and now POWER FAILURES within the 30 day return period, then it will not fail during its normal 3-5 year warranty period

I never trust my data to ANY SSD untill it has been thoroughly tested for 30 days and neither should YOU!

I have never had an SSD fail during the 3-5 year warranty after it has passed a 30 day torture test and by the time the 3-5 year warranty expires, my data will be on a newer and much faster SSD with a new warranty

Intels bug is actually good news for those who thoroughly test their hardware before trusting it to their data

I will immediatly be adding hard power shutdowns to my list of torture routines as well as unneeded firmware updates during the 30 day return policy for any new SSD's


The 30 day return policy had already expired on my vertex drives before I realized that firmware updates were the cause of so many problems with OCZ drives and that is why I never updated firmware after the 30 day return period for my Vertex drives

However, Needless firmware updates will be made on any new drives to find bugs during the return policy period


Posts: 166   +18
I have yet to upgrade to an SSD. I've been reading up on them, and I cant understand the need to update the firmware in the first place. If it works, performs as it should, and passed some sort of reliability test as stated by Guest above, why the hell would you want to update the damn firmware? What are the benefits? Could someone clear this up for me?


Posts: 3,357   +116
Two main reasons would be to increase drive performance and/or resolve error's or update otherwise unstable firmware.

I've never updated the firmware on an SSD myself personally. I've also never trusted my data to one single disk, and an SSD is no different. That's what backups are for.


I'd be interested how much of a drive's useful life a "torture test" is likely to consume.

Intel 320 series are specified for 30TB to 60TB writes in total (Google for intel 320 +60tb).

Within those drives a wear indicator keeps track of how much of a drive's lifetime is left, potentially shortening the drive's warranty to much shorter terms:


Posts: 1,882   +467
hojnikb said:
I almost bought this drive, but then i decided its to early for me to buy a SDD....

I have two, one from Kingston and one from OCZ, both currently in use, and with powerfailures, in fact. Still holding strong!


Posts: 4,315   +574
TS Special Forces
Updating was smooth sailing... hope no other unexpected nasties show up from this.


I never had a crash with my 320, so I never had the 8MB problem. But, I just updated my Firmware to be safe, and I had no problems doing so. I recommend strongly for everything to read the README file before going through with this. There seemed to be quite a few ways to mess it up.

Also, my Windows Experience Index score (Win7) dropped from 7.7 to 7.4 after this update. My lowest performing part is my SSD, and it just dragged my score (by lowest) down 0.3 points. This may be because I just ran the Intel SSD Toolbox for the first time and Disabled the data prefetch stuff, on the urging of Intel through this application. I have no idea how to actually enable prefetch again (atm), so I obviously haven't tried turning it back on yet. The performance drop may be because of the Firmware update, or it may be because I turned prefetch off.


Posts: 2,947   +2,327
Why I've waited until SSD's are as "bullet proof" as mechanical drives.
For what you have to shell out for an SSD, I can buy spare drives, mirror everything, and carry it in my laptop bag, two screws and it is swapped out.
Thanks to you brave people getting these now, your glitches are making these things better, but I can't be down, so I'll stick with the old style.


Updated the firmware today on 320 drive, it was easy and everything works OK.
Hi everyone. I just came across the 8 MB bug. We buy the 600 GB Intel 320 Series SSDs by the dozens for a specific application that we have. Out of 100 to 200 of these devices, we have only ever seen one failure. It's rare. The one that did fail had the new firmware (4PC10362). Our supplier has indicated that the new firmware does not fix the problem at all. In fact, the new firmware worsens the likelihood that it will happen. There is a solution that I've tested and it works and it's free (except for the CD you will have to burn). Google "Huge Bug in Intel SSDs: Complete Recovery Information Here" or go to for a solution.


Posts: 4,315   +574
TS Special Forces
Thanks a lot for that info Eric. Should calm the nerves of those who may own these drives. I don't store anything I can't recover from on my intel SSD, but it would suck to lose the capacity.


Posts: 18,005   +6,816
...[ ]....Thanks to you brave people getting these now, your glitches are making these things better, but I can't be down, so I'll stick with the old style.
Not me, no sirree, you can't stop me from lusting after boot times I can really rub the other children's noses in! With that said, I'm going to buy 2 SSDs for a RAID 0 setup, and a copy of Windows 8...!;) Not so much for my own personal gain, mind you, but because I know misery loves company......

Besides, I'm old enough to remember when 8 MBs of flash memory actually almost cost about 200 bucks..... >rolleyes<