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Beginner
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A couple questions regarding m3 compute stick before purchasing.

1) Is it possible to boot an OS installation from the microsd card slot? (I am asking because whether or not I need to purchase a USB flash drive for OS installation)

2) I need to use a 1TB Seagate BarraCuda Pro 2.5" in a 2.5" external enclosure. The seagate technical specifications below indicate a startup current of 1A at +5V however the intel compute stick manual indicates that each port supports a maximum of 900mA. Do I need a usb Y cable for additional startup power?

Page 2: https://www.seagate.com/www-content/datasheets/pdfs/barracuda-pro-2-5DS1966-1-1802US-en_CA.pdf https://www.seagate.com/www-content/datasheets/pdfs/barracuda-pro-2-5DS1966-1-1802US-en_CA.pdf

Page 24: https://www.intel.com/content/dam/support/us/en/documents/boardsandkits/computestick/STK2m3W64CC_STK... https://www.intel.com/content/dam/support/us/en/documents/boardsandkits/computestick/STK2m3W64CC_STK...

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New Contributor II
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Hi Consistency,

I can't really tell if you can boot from SD on the Core M3 model but the Core M5 model does not support this. However, the Core M3 and Core M5 do not use the same firmware versions.

For the HDD you will probably need the Y-cable, but on the power adapter there are 2 USB ports you can use for this (3rd USB port is on the stick itself).

Regards,

Leon Merts

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Beginner
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If the m5 doesn't support it; it is safe to assume the m3(STK2M364CC) doesn't either.

I've been reading that the m5 runs a little cooler while the clock speed is higher. Is there any validity to this?

I was set on the m3 without windows because I don't need vPRO and the speed difference doesn't seem like a lot for double the price. Is there another reason you purchased the m5 over the m3?

Thanks.

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New Contributor II
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It is safe to assume that the M3 doesn't support it, but then again it is still an assumption.

I only have the M5 model, mainly to play with vPro, but if you don't use that the M3 would be the better option.

There are only small differences in clock speed for CPU and iGPU and the M5 supports vPro, Transactional Synchronization Extensions New Instructions (Intel® TSX-NI), Intel® Trusted Execution Technology and ntel® Stable Image Platform Program (Intel® SIPP). Probably the reason the firmwares are different. Other than that they are the same.

See: https://ark.intel.com/compare/88198,88197 Intel® Product Specification Comparison

Regards,

Leon Merts

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Beginner
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I guess I need to contact intel tomorrow or wait for someone else to respond with an m3 stick.

Thorough comparison: https://ark.intel.com/compare/91979,91981,88198,88197 Intel® Product Specification Comparison

m3 stick without windows has TPM 2.0 and I thought TPM 2.0 was part of Intel® Trusted Execution Technology.

https://stackoverflow.com/questions/19499999/what-is-the-difference-between-intel-txt-and-tpm What is the difference between Intel TXT and TPM? - Stack Overflow

I'm also looking to purchase an sd card. Would you know if the UHS-I bus speed is SDR50 or SDR104? or the sd card chipset model number?

https://www.sdcard.org/developers/overview/bus_speed/ Bus Speed (Default Speed/High Speed/UHS/SD Express) - SD Association

https://en.wikipedia.org/wiki/Secure_Digital# Ultra_High_Speed_(UHS)_bus Secure Digital - Wikipedia

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Community Manager
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Hello Consistency,

 

 

Thank you for joining the Intel Communities.

 

 

The Intel® Compute Stick STK2m364CC does not support booting an operating system from the MicroSD card slot.

 

 

If you are using a device that draws almost 1A, you must use an adapter that provides power to the external device.

 

 

I will check if the UHS-I bus speed on the Intel® Compute Stick STK2m364CC is SDR50 or SDR104. I will post information on this thread as soon as I have it.

 

 

Regards,

 

Fred D.
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Beginner
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Thank you. I will await your reply.

I was planning on using a quality USB 3.0 Y cable. Are you telling me that I can't piggyback the second USB-A port on the power block with a Y cable? 900mA+900mA=1.8A

The seagate manual says 1A current startup at +5V and 2W max read/write power at +5V..... 2W/5V=0.4 .... So 400mA for read/write to the disk sounds right(?). Idle power is 0.7W at 5V ... 0.7/5=0.14 ... 140mA for idling the disk. Seems like hard drives are like engines; they need more power to start than to maintain speed.

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Super User Retired Employee
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You know, I have Seagate HDD (ST2000LM003) and SSHD (ST2000DX001) and I have connected these to the m3 and m5 CC Compute Sticks (using USB 3.0 adapter and via USB 3.0 ports on their power bricks) on a number of occasions. I also have two backup drives (4TB Seagate Backup+ and 2TB WD My Passport) that I connect to them on a regular basis. I have *never* seen a power surge on the USB port and I have never seen any of these drives not connect. You may be worrying about something that you really don't need to...

Just saying,

...S

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Beginner
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Worrying would imply that I am stressing over it while I am simply covering all my bases.

I'm curious. Are you maxing out the USB 3.0 bus at 500MB/s+ with your hard drives?

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Super User Retired Employee
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The two ports in the power brick are sharing the bandwidth of a (single) port in the ICS - and the other port is also in use for keyboard and mouse - so there is little chance I was ever maxing out the ICS port. I will do a Crystal DiskMark test tomorrow and see what I can get...

...S

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Super User Retired Employee
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Here's the output from Crystal DiskMark for 1GB and 32GB workloads on the 4TB Seagate Backup+ drive while connected to the m5 CC Compute Stick.

This is with the drive connected to the USB 3.0 port on the Compute Stick itself:

And this is with the drive connected to one of the USB 3.0 ports on the Compute Stick's power brick:

As you can see, there is only a small difference in the performance of the drive when connected to these ports and in neither case it is anywhere near saturating the USB bus.

Hope this helps,

...S

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Beginner
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Were the crystaldiskmark tests done between the internal emmc and the external hard drives?

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Super User Retired Employee
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No; the eMMC is not involved. There are no device-to-device operations at all. It is simply the CDM application reading from and writing to the target drive.

Bottom line, you can't blame the slowness on the eMMC...

...S

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Beginner
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LOL.

So... CDM reads/writes in a loop through RAM I presume?

What is the speed if copying a large file from emmc to external 7200rpm drive?

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Super User Retired Employee
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This will have to wait until tomorrow; I ripped down the test setup...

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Moderator
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This is in reply to Consistency Sep 3, 2018 8:14 AM

Question: I'm also looking to purchase an sd card. Would you know if the UHS-I bus speed is SDR50 or SDR104? or the sd card chipset model number?

Hardware-wise we support the specification, so as with any specification, it should work as stated:

-If a SDR50 or DDR50 card is being used, speeds up to 50MB/s is supported

-If a SD104 card is being used, speeds up to 104 MB/s is supported

Of course these speeds are difficult to attain.

I hope this helps,

Ronny G

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Beginner
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I'm not trying to come off as rude but I was expecting a reply from the Intel Corporation user. Just for clarification. Did they ask you to respond?

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Super User Retired Employee
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Um, Ronny is Intel...

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Beginner
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Why are SDR104 speeds hard to attain if they are supported by the m3 compute stick?

Does the UHS-I bus on the m3 compute stick actually support a frequency of 208MHz?

Does USB 3.0 support UASP(USB Attached SCSI)?

It may seem like I am dragging on this thread however I am not since the compute stick will not be available for me to purchase till the 20th.

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Moderator
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Hi Consistency,

I am working on getting answers for your questions, we dont have that level of detail documented so getting this information will take some time.

I am curious about a couple of things: Where did you get the Bus support frequency of 208Mhz from? And would you mind telling me a bit about what are the plans for the stick? If you have this level of concern about speed, support and performance, it may be a good idea to take a look at the NUC family as the Intel® Compute Stick has very limited expansion capabilities due to its design.

Thanks,

Ronny G

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