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Archive for the ‘HW’ Category

Bluerays

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A disc with a capacity of 25 gigabytes is equivalent to 23.28 gibibytes, depending on whether you are using a base-2 system or a base-10 system. Additionally, some of that space is reserved as overhead for the file system as well as error-correction information. This results in a true recordable capacity of 23.28 gibibytes instead of the 25GB stated on the package. http://blog.cdrom2go.com/2010/12/maximum-capacity-of-a-blu-ray-disc/

The same situation is true of dual-layer Blu-ray discs. These are normally rated with a 50GB capacity, but in practice you can record about 46.57GB of data on a disc. Again, this is due to differences in the way the disc capacity is measured plus a small percentage of space reserved for file system information.

Written by youryblog

October 6, 2014 at 1:07 AM

Posted in HW, IT, MacOS

Teeny Tiny Pacemaker Fits Inside the Heart By Eliza Strickland Posted 15 Oct 2013 | 18:30 GMT

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A tiny pacemaker that doesn’t need wires to stimulate the heart has been approved for sale in the European Union. It’s the world’s first wireless pacemaker to hit the market. This device, which is about the size and shape of a AAA battery, is designed to be inserted into the heart in a non-invasive procedure that would take about a half-hour. http://is.gd/9steqW

Written by youryblog

October 17, 2013 at 2:03 PM

Posted in HW, Interesting, IT

Computer Parts and Computer Accessories (good, maybe great).

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Computer Parts and Computer Accessories (good, maybe great).

  1. 8 Great Portable Scanners by     Tony Hoffman By Tony Hoffman, August 2, 2012
    Our favorite portable scanners range from powerful desktop models that can be undocked for a road trip to a battery-powered wand scanner that can scan to a memory card, smart phone, or tablet. http://www.pcmag.com/article2/0,2817,2369305,00.asp

Written by youryblog

August 3, 2012 at 11:08 AM

Posted in HW, Interesting, IT

If you like overclock for i5-750 CPU

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If you like overclock for i5-750 CPU. I did it in the past and after BIOS upgrade forgot to do it again, but now I think it will be nice to get 3.3GHz again back instead of 1.66 Ghz.

In the past I found very good paper in Internet: http://www.legionhardware.com/articles_pages/intel_core_i5_750_overclocking_guide,2.html which I use now:


“When the processor is operating below these limits and the user’s workload demands additional performance, the processor frequency will dynamically increase by 133 MHz on short and regular intervals until the upper limit is met or the maximum possible upside for the number of active cores is reached. Conversely, when any of the limits are reached or exceeded, the processor frequency will automatically decrease by 133MHz until the processor is again operating within its limits.”

I’ve tried to use 200 BCLK and 100 PCIE with TurboMode – system crash until 180 BCLK, but when I removed Turbo – everything works now. Testing is going on now for Fedora 17.

To check CPU speed I found only one utility : /usr/sbin/./x86info -a

cpuinfo shows wrong information: cat /proc/cpuinfo

dmesg |grep MHz – can give this information as well.
lspci

sensors can give CPU temperature and Vcore  voltage.

Written by youryblog

July 16, 2012 at 4:02 PM

Posted in HW, IT

Data Storage: 10 Compact Hard Disks Delivering Terabyte-Scale Storage

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HDDs is very interesting topic now for everybody, who really use computers at home and at work. I think, that 3.5″ HDDs are going in the past now. We should think about 2.5″ only or even about SSD. SSD is still expensive, but will be cheaper and cheaper very soon. The following below slide show is very interesting and could be a good guideline for new HDDs. As everything else on my blog I present this information for myself only.

Data Storage: 10 Compact Hard Disks Delivering Terabyte-Scale Storage
see http://www.eweek.com/c/a/Data-Storage/10-Compact-Hard-Disks-Delivering-TerabyteScale-Storage-796499/?kc=EWWHNEMNL01032011STR4

Written by youryblog

January 3, 2011 at 11:44 AM

Posted in HW, IT