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[Chrysalis]

Read this article here which is interesting, apparently if the powered on temperature of a ssd is low it will reduce the data retention of the nand cells.  The worse combination been a cool operating temperature and high ambient temperature, link coming up.

Note this data is for ssd's at the end of their wear life, the actual rentention is higher when a ssd is new.

http://www.anandtech.com/show/9248/the-truth-about-ssd-data-retention

So using myself as an example my ssd is running at 27C and my room temp in mid october is without heating about 16C.  If we assume room temp of 25C as thats the lowest the chart goes I would expect about 60-62 weeks for my data to last with the ssd powered off if I had used all the erase cycles.

However if the operating temperature was e.g. 45C the data retention would be increased to 125-130 weeks with all other variables lef the same.

--edit--

edited wrong days to weeks.

[guest]

You've read this the wrong way around :

"In a worst case scenario where the active temperature is only 25-30°C and power off is 55°C, the data retention can be as short as one week"

The shorter data retention happens when the power-off temperature is significantly higher than the power-on temperature and I can't think of a single case where that'd happen.

Also the figures on the chart are weeks, not days.....

[Chrysalis]

Thats exactly what I said, a situation of a low power on temp and high power off temp is bad, meaning cooling your ssd=bad.

But yeah sorry for saying days instead of weeks.

[guest]

Doesn't read like that to me when you're talking about an ambient temp of 16C and an operating temp of 27C.

Anyway unless you're using a Peltier cooler (you'd have to be insane to do this with an SSD) then I can't imagine a single scenario outside a data centre where the operating temp of a SSD will be significantly below ambient temperature.

Its a non-story really for anyone "normal" - which I think was the whole point of the article you linked to

Edit - I guess it might be a story for people who don't realise that data stored magnetically (spinning disks) or via a charge (SSD NAND) degrades as time goes by? Frankly SSD NAND has only ever been a stopgap between magnetic storage and phase change storage such as resistive RAM. Like most stopgaps it has a hell of a lot of drawbacks....

[Chrysalis]

yeah my ambient temp isnt high enough for it to be a major issue.

What happens if you live in egypt and have no air conditioning

[guest]

You're probably running it out of spec (most are specced 0-35C ambient) then anyway and even then the ambient temp isn't going to be higher than the operating temp.

[guest]

Amusingly I got a new* graphics card (GTX970) at the weekend & its one of the Asus STRIX series. Yes I know that meant bugger all to me either

As it turns out these ones are very close to passive cooling (huge heatsink/pipes) and run with the fans turned off unless you start a game/render/compute whatever (they're just huge number crunchers really). So I run a few extended benchmarks & then set the fans to "full" which is 1000rpm so very quiet. Anyway with two screens @ 1920x1080 & a couple of browsers plus one VLC stream the card was running at 26C, which is 1C lower than the SSDs & a full 5C less than the spinning 2TB disk. Runs at 40C without fans which is probably pretty close to perfect for normal use.

That was just an aside for people who might be interested - cannot remember the last time I saw an aircooled gfx card cooler than a hard disk (which does have airflow over it).

*the machine I got in January had a memory failure on the gfx card, this is the replacement, shipped out to me next-day delivery with pre-paid return (delivery driver waited) for the dodgy board. Used the Intel gfx in the meantime, was OK but cpu gets a bit toasty

[AArdvark]

*the machine I got in January had a memory failure on the gfx card, this is the replacement, shipped out to me next-day delivery with pre-paid return (delivery driver waited) for the dodgy board. Used the Intel gfx in the meantime, was OK but cpu gets a bit toasty

Sounds like very good Customer Service.
Who was the Vendor/Supplier as a matter of interest ?

[guest]

The manufacturer was PCSpecialist although the vendor for this model was ebuyer. Needless to say I didn't get service like this from the vendor

[AArdvark]

Thanks, food to know.
To be fair, I have never, personally, had a problem with ebuyer.
They are sometimes convenient when you need something quick.