Do all m.2 NVMe drives exhibit weird temp activity?

jkauff

Senior member
Oct 4, 2012
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I have a BPX 240GB m.2 NVMe drive from MyDigitalSSD, which is plugged into an Asus PCIe adapter board. I'm generally quite satisfied with it, especially for the price, but the temperature patterns are confounding.

The drive is in an open, well-ventilated space in a mid-tower case with a nearby fan blowing over it. Idle temp goes as low as 40C, although 47C is more common. Suddenly, still at idle, the temp will jump to 57C. Sometimes it will jump all the way into the 60s. Of course, some background process is accessing the drive at those times, but the jumps seem way out of proportion to the I/O activity. I'm measuring with CrystalDiskInfo, BTW.

Is this common in NVMe drives, or is the Phison controller on the BPX the culprit? Not really a problem, but I'm curious.
 

Hail The Brain Slug

Diamond Member
Oct 10, 2005
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It's not unusual for M.2 NVM-e ssd's to have the controller run hot at idle or get really hot under load. High performance plus complete lack of heatsinking can do that.

Drives like the Toshiba RD400 can idle at 55-60+ and quickly hit the thermal limit once a load is going.
 

Hail The Brain Slug

Diamond Member
Oct 10, 2005
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This -- for your PCIE x4 M.2 strategy:

KryoM.2 w passive heatsink or waterblock

For maybe $10 or $15, there's the Gnome Tech M.2 heatsink -- better than making your own DIY if you choose the M.2 motherboard slot instead of PCIE.

Or just get yourself some aluminum heatsink material and contrive a way to secure it to your M.2 after cutting it to custom size with a hacksaw.

Don't forget, the KryoM.2 just got a redesign with a better design, larger heatsink, rear heatsink, silicone dust seal, and optional LED's.
 

BonzaiDuck

Lifer
Jun 30, 2004
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I assume "Configurable LED lighting and additional activity indicator" means that I can run a two-conductor cable to my front panel so I can see drive activity?

There had been another PCIE adapter -- a cheap one -- which had the LED pinouts but no heatsink.
 

jkauff

Senior member
Oct 4, 2012
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The KryoM.2 looks like a good choice, but I'm not ready to throw out my Asus board and spend another $40. That's almost half what the drive cost! And the Gnome Tech seems to be totally unavailable at this time.

I can live with the temps, I was just curious about the degree of fluctuation at idle.
 

Ajay

Lifer
Jan 8, 2001
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The annoying thing is that manufactures place a stick over the top of the chips on every M.2 drive I've seen. I'm guessing that removal of the sticker voids the warranty, yet a modest heatsink makes so much sense.
 

BonzaiDuck

Lifer
Jun 30, 2004
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I've been using the Sammy NVMe Pro drive for about three months now. With the KryoM.2, I seldom see any high temperatures. It's perfectly adequate. The Gnome Tech heatsink boasts a decrease in temperature of maybe 12C. For something like this, I would not remove the sticker, and for Sammy 960's, the sticker is made of copper. A person could order some aluminum heatsinks or heatsink material and apply in a DIY effort. But I would stand pat with the blue 2mm "thermal pad" material. Something like Arctic thermal epoxy poses a risk in application and then -- you're stuck with a permanent mod to your M.2. There goes your resale value . . .
 
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Ajay

Lifer
Jan 8, 2001
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I've been using the Sammy NVMe Pro drive for about three months now. With the KryoM.2, I seldom see any high temperatures. It's perfectly adequate. The Gnome Tech heatsink boasts a decrease in temperature of maybe 12C. For something like this, I would not remove the sticker, and for Sammy 960's, the sticker is made of copper. A person could order some aluminum heatsinks or heatsink material and apply in a DIY effort. But I would stand pat with the blue 2mm "thermal pad" material. Something like Arctic thermal epoxy poses a risk in application and then -- you're stuck with a permanent mod to your M.2. There goes your resale value . . .

Hey, thank for info - very useful (well, it will be in the future). It looked like the 960 sticker was metal - awesome! Now, if the price would go back down sometime this year...
 

Billy Tallis

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Aug 4, 2015
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Based on watching my power meter, it is common for SSDs to enter a low-power idle state within a second or two of completing a benchmark run, but then while the system is idle the drive will jump back up to an active power level for some background processing. The delay is often on the order of a minute or so, but I haven't systematically analyzed these patterns. How long the drive spends on background cleanup will vary depending on what you've been doing to the drive.

This behavior is very desirable for client drives; during interactive use, you want them to defer non-critical work in order to complete your requests as quickly as possible. Desktop workloads always include plenty of disk idle time so it's reasonable for client drives to trust and hope that they'll get the chance to tidy things up before the mess gets too large.

Don't worry too much about the drive jumping almost to 60ºC. Most NVMe controllers don't need to throttle until 80-90ºC.
 
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BonzaiDuck

Lifer
Jun 30, 2004
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The KryoM.2 looks like a good choice, but I'm not ready to throw out my Asus board and spend another $40. That's almost half what the drive cost! And the Gnome Tech seems to be totally unavailable at this time.

I can live with the temps, I was just curious about the degree of fluctuation at idle.

I might feel a bit ashamed about my mistakes for building the sig Skylake. Oh, it may be perfectly reasonable to buy a pair of items when you only need one. Then you have to organize and store a parts locker. Eventually, you will have to purge the locker even if the items are good, because not many would want them, and the cost of used-parts transactions exceeds a cost to convenience. Some of us would be great subjects to appear on the Cable-TV channel in "Hoarders" -- to our understandable embarrassment.

That being said, I lost a few ducats here and there, but those expansion cards only cost between $15 and $35. I can't even remember the make and model of the first I tried. I also bought an ASUS Hyper M.2, or whatever they call the one you also mention. I think it has LED pins. Then, I bought the KryoM.2 passive-heatsink model for a good reason: I was going to make a bigger-than-average investment in NVMe.

But I can still use the ASUS card. I have some contingency plans, ya see . . .

On the other side of the coin, the Kryo is especially good because of the heatsink size and the orientation: Even if low-profile cards are better for ventilating your graphics adapter, the higher-profile of the Kryo is also out of the way so that air is unfettered to travel through the graphic cooler fan.

Here's what I would do, though. It just shows how my mind is slowing down, because I wish I'd thought of it before pulling Checkout strings. I'm going across the room just to look again, but I think it would be fairly easy to jerry-rig a flat aluminum heatsink plate to the card, using the 2mm-thick blue pads, perhaps some wire ties. If I give myself a few hours, I can think of a lot of ways to do it that would be fairly neat and effective: You could "show" them.

The basic aluminum material I speak of can be had at the local metal shop in your town's industrial zone. It might be 3/8" or 1 cm high with stubby fins. You can trim and shape it with a dremel in minutes, because aluminum can be like butter. Just don't let the dremel blade stick or kick back. Use a light touch.

If, for instance, you cross-cut the fins perpendicular to their direction to create a slot through them, a wire tie might be just the thing -- perhaps -- a couple small wire ties. Pick your color. Purple is good; black is good; yellow and red too noticeable, but red might even provide some minor eye-candy.

You can also buy heatsinks at PC specialty shops online, but, again, the electronics jobber warehouse store next to the metals store might again be a place to look, and in fact -- it's true: I may have bought the basic 4"-wide by 10" long heatsink pieces at the electronics place next door to the metal shop.

A hacksaw is also quite handy. Perhaps -- a bench clamp.

You know -- I think that would be so-o-o easy. The biggest issue I foresee is the tension on the wire-ties. And the more I think of it, that shouldn't be so difficult to do right, either . . .

Maybe it depends on whether the x4 gold-plated edge connector is aligned with the only places you could run the strap around the board. I don't think that would be a problem, either.

Whadda any yas think about this? Let us confer . . .
 

jkauff

Senior member
Oct 4, 2012
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Well, I ordered a $12 heatsink kit from a Hong Kong company called ModDIY. International air mail almost doubled the cost, but I thought I'd give it a try. Should be here in a week or so, I'll report back on whether it makes a difference.

Just couldn't let well-enough alone. ;)