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• Is this a normal operating temperature range for a New Third-Generation MacBook Air (2.13 MHz, 120 G

  - by doug

  Even with just my text editor open (no web browser) and maybe the terminal, the baseline temperature is usually above 40 C. When i open 4-5 browser tabs in Safari (even if none of Sites have Flash) the temp can quickly go over 50 C. (In addition, i am observing these temps even though i have turned the fan up to 3000 rpms). (i have install smcFanControl on my MBA so i can see the temp in the menu bar.) So this means my MBA is running much warmer than my MBP; and in practice, it means that i have to be very careful how i use my MBA. Of course if i load a Site with Flash, it just freaks out, and often quickly goes above 65 C (I've installed a flash blocker to avoid this). Is anyone else observing this behavior? I have checked the Apple boards and sure enough, there are a lot of complaints, but nothing from Apple.

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• Tiny linux box with 2xGbLAN, WLAN and 10MB/s AES throughput?

  - by Nakedible

  I'd like to find a small linux box with the following specifications: Small (mini-ITX size is OK) Fanless Runs Debian At least two gigabit network interfaces WLAN that supports "host ap" with hostapd + mac80211 in AP mode Can encrypt AES at least 10 megabytes per second Total cost $300 or less Solutions from multiple parts also accepted - I can buy an external network card etc. and build the box myself if the components are available. If you don't know about the "host ap" thing, just suggest your solution, I'll find out if I can get that resolved. If I can't get all that, I can possibly skip the "runs Debian" part, and I can definitely skip the hostapd part if the box can be a wireless access point with multiple ESSIDs out of the box. Something like Asus RT-N16 is close - doesn't run Debian easily, and probably doesn't encrypt AES fast enough. Something like Zotac ZBOX HD-ID11 is also close - no idea which WLAN card it has and it lacks second gigabit interface, but otherwise nice.

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• How can I get Windows 7 to work with two Nvidia graphics cards with different drivers?

  - by Max

  This is similar to this question, but I am using more similar cards with Windows 7. I just purchased a Zotac Nvidia GeForce 7200 GS. I have a motherboard with two PCI Express x16 slots. There is already an MSI Nvidia GeForce 8800 GTS being used as the primary card, driving two LCD monitors. I would like the Zotac to output to a TV via DVI-out. Unfortunately, when Windows detects the Zotac and installs its drivers, or I manually install them, Windows stops being able to boot up. If I remove them and re-install the MSI 8800 drivers, I can boot again, but Windows can no longer see the Zotac 7200--it shows up as a yellow triangle in Device Manager. I've read conflicting reports about this. Some people claim that Windows 7 will support multiple heterogeneous graphics card drivers, as long as they are all using the same driver API ("WDDM?"). Others say that they have to be using the exact same driver, or it won't work. Others claim that you have to use the exact same card. which is it, exactly? I know I can run the MSI 8800 in SLI if I purchase another, but I don't need that kind of power--I just need HD-out to my television. I read somewhere that running two cards in SLI precludes you from using 100% of their output ports, so I'm not sure if that's an option. I suppose I could also run two MSI 8800's without SLI, but again, that's more power than I need (and more money than I'd like to spend). Also, I don't think this exact model is even manufactured anymore. Any ideas?

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• Can enabling a RAID controller's writeback cache harm overall performance?

  - by Nathan O'Sullivan

  I have an 8 drive RAID 10 setup connected to an Adaptec 5805Z, running Centos 5.5 and deadline scheduler. A basic dd read test shows 400mb/sec, and a basic dd write test shows about the same. When I run the two simultaneously, I see the read speed drop to ~5mb/sec while the write speed stays at more or less the same 400mb/sec. The output of iostat -x as you would expect, shows that very few read transactions are being executed while the disk is bombarded with writes. If i turn the controller's writeback cache off, I dont see a 50:50 split but I do see a marked improvement, somewhere around 100mb/s reads and 300mb/s writes. I've also found if I lower the nr_requests setting on the drive's queue (somewhere around 8 seems optimal) I can end up with 150mb/sec reads and 150mb/sec writes; ie. a reduction in total throughput but certainly more suitable for my workload. Is this a real phenomenon? Or is my synthetic test too simplistic? The reason this could happen seems clear enough, when the scheduler switches from reads to writes, it can run heaps of write requests because they all just land in the controllers cache but must be carried out at some point. I would guess the actual disk writes are occuring when the scheduler starts trying to perform reads again, resulting in very few read requests being executed. This seems a reasonable explanation, but it also seems like a massive drawback to using writeback cache on an system with non-trivial write loads. I've been searching for discussions around this all afternoon and found nothing. What am I missing?

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• External USB disk drive cannot be remounted in Windows XP

  - by jackhab

  I have Maxtor Basics Desktop 1TB external USB drive connected to Windows XP. The dirve's firmware puts it to sleep after 10-20 min of inactivity and then the drive cannot be mounted unless I reset it via power connector. While in sleep mode I can see the device in the Device Manager under both Disk drives and USB sections. Is there a way to get the drive out of sleep mode without hard reset? Thanks

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• Hard drives indication with controller MegaRAID SAS 9261-8i on HP Proliant DL320e Gen8. Is it possible?

  - by ame

  Give me advice, please. My situation: There're the server HP ProLiant DL320e Gen8 and MegaRAID SAS 9261-8i RAID Controller. I installed Controller into server and I reconnected Mini-SAS cord from block of hard drives to controller, but I haven't any indication of hard discs on server front panel. There's indication of activity of drives only during boot of server. Controller has 2-pin connector (JT6B3, SAS Activity LED header) but where and how can I connect it? Thanx.

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• ImgBurn CD/DVD burn error

  - by bobby

  I am getting the above error when I try to burn a CD/DVD on my DVD writer. I am seeing this error for every CD/DVD I try to burn. I am not able to write any CDs or DVDs using ImgBurn. What could be causing this error?

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• What is causing my newly built PC to BSOD?

  - by Ben S

  I recently built my own PC from parts and installed Windows 7 and I have been getting BSODs with various different stop codes. The latest was 0x24, but I've also had 0xd1 and 0x1e. However, Windows does not let me know where the fault occurred, so I have no idea how to go about resolving this. I've uploaded the last three minidumps in case someone can make sense out of them and let me know what could be causing my BSODs. Thanks, Ben

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• HP Proliant DL360 G5 + MSA50 RAID Setup recommendations

  - by JohnRB

  I am running a HP Proliant DL360 2 x 3GHz Xeon 16GB Ram P400 integrated RAID card with 6 x 73GB SAS HDDs running Ubuntu Server 14.04 CLI only. I recently got my hands on a MSA50 SAS Enclosure (10 x SAS HDD bays w/ SAS in/out interface) and wondering what you guys recommended as far as an addon raid controller for one of the pciex slots. I have both slots free Full and Half sizes. Any suggestions are greatly appreciated, I am an I.T. Consultant but have not used these particular units before so I was hoping to hear from someone who has. Thanks!

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• Testing Firewire 800 port on MacBook Pro

  - by dtlussier

  I am having trouble getting my MacBook pro to mount an external Firewire hard drive. I am able to mount the disk no problem on other Macs, just not my machine. I haven't received any errors from my machine, and don't see anything related to the Firewire port in the logs. Are there good diagnostic tools for this type of problem that come with the Mac? other free alternatives ?

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• Why my new GTX 660m's clock drops drastically after running few seconds

  - by trVoldemort

  I bought a Lenovo Y580 laptop few days ago, this model is equipped with GTX 660m graphics card. However, the game performance is unbelievably poor since it out from the box. I realized there is something wrong with this graphics card. I downloaded GPU-z, and did a simple test. And I was shocked by the fact that my GTX 660m graphics card is running at 135.0mhz core clock. (It should be 835mhz at least!) Even the integrated graphics card "Intel HD graphics 4000" can run at 650mhz. Further examining showed that in the first few seconds GTX 660m was actually running at 835mhz, however the core temperature quickly reached 90+°C and the clock (maybe) automatically drop to 135.0mhz. This is very strange. Anyone has any idea what's going on here?

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• What will happen if I (accidentally) pour a bucket of water inside my pc?

  - by ULTRA_POROV

  Is it dangerous? What will happen to me and the PC? Edit: It's a serious question. The other day I almost spilled a bottle of cola inside my PC (the case was open).

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• How does the build quality of laptops compare?

  - by pgwillia

  I'm looking to replace my 5 year old laptop. I want my next laptop to endure at least this long. I typically have Thunderbird, Firefox, Eclipse Java IDE, Skype, a ssh session, and Apache Tomcat running. I'm currently running Karmic Ubuntu, but am agnostic about operating system and would move to Win 7 or OS X. I frequently travel with this computer. I also value battery longevity and power conservation (if possible). Above all I'm looking to minimize cost. I think the hardware that best meets my needs is an Intel i7 processor, 8 GB RAM, 100GB @7200 rpm or SSD hardrive, and about 15 inch monitor. These specs are met by most brands. Does anyone know specific pros/cons and build quality for Macbook Pro, Lenovo Thinkpad (W510 or T510), Sony's VPC-F1190, and ASUS G Series G73JH-X1 NoteBook? Are all i7 processors created equal? Do you have other suggestion that meet my needs?

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• Best motherboard power supply combo for backblaze server

  - by jin14

  Building a backblaze server as described in this article. http://blog.backblaze.com/ So 45 hard drives in one box. I'm making it a MSDPM 2010 server so I actually don't even need raid cards in there as MSDPM will figure out how to use all of the hard drives on it's own. So need to know what motherboard, CPU, power supply I should get. Primary hard drive : SSD 128GB Storage : 45 1.5GB sata drives OS : windows 2008 Backup software : Microsoft System center Data protection server 2010 Need to know Which mother board to buy which will support 45 SATA hard drives. Don't need a raid card. Which power supply can power all 45 hard drives, 1 ssd drive, motherboard. Best set of equipment that meets my needs wins

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• Hiding monitor from windows, working with it from my app only [closed]

  - by Mikhail

  I need to use a monitor as a "private" device for my special application, I want to use it as a flashlight of a sort and draw special patterns on it in full screen. I don't want this monitor to be recognized by OS (Windows 7) as a monitor. I.e. user should not be able to move mouse to that monitor, or change its resolution, or run screensaver on it or whatever. But I want to be able to interact with it from my application. Monitor is plugged using an HDMI cable to a video card (most probably nVidia). What is the simplest way to do this? All solutions are appreciated, including purchasing additional adapters or simple video cards, or any other special devices.

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• Is it safe to leave a broadband router running 24/7?

  - by Anirvan

  My father-in-law's ISP warned him in the strictest possible terms to physically turn off his rented Nokia Siemens C2110 PPPoE broadband router when not in use. Everyone I know leaves their broadband router on all the time, and I've never heard of any negative impacts. Is leaving a consumer broadband router running 24/7 really problematic? Is the ISP in question being ridiculously paranoid?

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• Recommendations for a JetDirect print server for USB 2.0 printers?

  - by eleven81

  I have been using some older HP JetDirect 300x print servers for a variety of parallel printers over the years. These things work great for every printer I have tried them with, including HP's, Dell's, and even a Mountbatten braille embosser! These have been a boon for printers whose internal network cards fail, but whose parallel ports continue working. I don't have to throw away the $500 printer that is one year and a week old, and can keep using it for many, many years. Now that very few printers are coming with parallel ports, but are coming solely with USB connections and network cards. When the network card fails but the printer is still usable, I want to continue using it on the network with a JetDirect card. In summary: Does anyone have any recommendations for JetDirect cards that will work as well with USB 2.0 printers of unspecified manufacturer that my old JetDirect 300x cards do?

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• Instructions per cycle?

  - by Matt Simmons

  I've been learning a little bit more about how processors work, but I haven't been able to find a straight answer about instructions per cycle. For instance, I was under the impression that a four core CPU could execute four instructions per cycle, so a four core CPU running at 2Ghz would execute 8 billion operations per second. Is this the case? I'm sure it's oversimplifying things, but if there's a guide or something else I can use to set myself straight, I'm definitely open to ideas.

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• Two Different nVidia Cards, One as Graphics, One as Physics - Possible?

  - by Jasarien

  Hey guys, Soon I will have a brand new Geforce GTX 285 to replace my current 8800GT. Will it be possible to move my 8800GT to another PCIX slot, put the GTX 285 into the primary slot and use the nVidia software to make the 8800GT do physics? I have enough PCIX slots on my motherboard (4). The GTX 285 will take up 2, so the 8800GT should fit in the 3rd. If anyone knows if this is possible, I would be grateful to be educated!

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• What is the difference between these Pentium Extreme Edition CPUs?

  - by Giffyguy

  The CPU in question is the Pentium Extreme Edition 955. Intel's website shows four "versions", but for the most part they all look identical. They even share the same set of ordering codes. But one of them has a substantially lower TDP, which is seemingly unexplainable - since everything else is the same. Two of them say "LGA775, Tray" and I have no idea what "Tray" means either. Also, two of them have a different SPEC code. What I need to know is: What does "LGA775, Tray" mean? Why does the one CPU have a lower TDP? And what does that mean for me? Does that mean lower maximum power consumption? Does it mean the CPU may be more stable/endurant, because of a lower heat output? Why do two of them have a different SPEC code, and what does this mean? Finally, what does PLGA775 (as opposed to LGA775) mean, and do I need to be worried about that? Information from Intel's wbsite: Intel® Pentium® Processor Extreme Edition 955 (4M Cache, 3.46 GHz, 1066 MHz FSB) with SPEC Code 1 Boxed Intel® Pentium® Processor Extreme Edition 955 4M Cache, 3.46 GHz, 1066 MHz FSB LGA775 PLGA775 B1 95 Watts BX80553955 SL94N 2 Intel® Pentium® Processor Extreme Edition 955 4M Cache, 3.46 GHz, 1066 MHz FSB LGA775, Tray PLGA775 B1 130 Watts HH80553PH0994M SL94N 3 Boxed Intel® Pentium® Processor Extreme Edition 955 4M Cache, 3.46 GHz, 1066 MHz FSB LGA775 PLGA775 B1 130 Watts BX80553955 SL8WM 4 Intel® Pentium® Processor Extreme Edition 955 4M Cache, 3.46 GHz, 1066 MHz FSB LGA775, Tray PLGA775 B1 130 Watts HH80553PH0994M SL8WM

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• What is the name of this screw? (from HP ProLiant quick-deploy rail kits)

  - by kockiren

  I need the name of the screw for the HP quick deploy rail kit. The screw clicks into the square holes of the rack. It is a Gen4 Rail kit but the screw is like the Gen8 Rail kit ones. I called HP support, but they couldn't really help me. Unfortunately the rack manual does not name this screw either. After googling a while, I found the compatible "Thumb Style Rack Screws". It would do the job but isn't exactly what I am looking for. So, what is the name of the pictured screw.

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• Scanner Daily Duty Cycle

  - by juanp

  I'm comfused with the concept of 'Daily Duty Cycle'. For example if I have a scanner that the spec is: PPM (pages per minute): 90 and DDC (Daily Duty Cycle): 800. It means that in one day it will be able to scan only 800 pages?

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• Scanner Daily Duty Cycle

  - by Juanp

  I'm comfused with the concept of 'Daily Duty Cycle'. For example if I have a scanner that the spec is: PPM (pages per minute): 90 and DDC (Daily Duty Cycle): 800. I am interested in scanning ONLY 10 hours continuously, what would it be the best choice: 90 * 60 * 10 = 54.000 or (800 / 24) * 10 = 333 It is very different results. what would it be the best option?

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• Have it fixed or buy a new one?

  - by Workshop Alex

  My dual-monitor system has just become a single-monitor system again when the older monitor decided it would be nice to just turn to black. It's a Samsung LCD monitor and is over three years old. Not sure if the warranty is still valid but I just wonder what option would me more efficient: 1) Have the monitor fixed for a small amount. 2) Buy a new monitor for a slightly bigger amount. When monitors were still expensive, I wouldn't doubt about this and would just have my monitor repaired. But prices are so low nowadays, (and repairs are expensive) that I wonder if it's worth the trouble... Of course, I'm in no hurry since I still have another monitor. It's just that I liked the dual-monitor setup. Solved! Just ordered a new monitor. A Samsumg Syncmaster T260HD 25,5". Much more than it would cost me if I just had my old one repaired but I noticed that this one has a build-in TV tuner, plus speakers. It's way more expensive than a repair, but it's worth the additional value it provides.

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• Small (Micro) 16GB USB flash drive

  - by cust0s

  I'm looking for a small 16GB USB flash drive, that's good looking, will stand the test of time and can be attached to a key ring. I don't want extra software (like that found on the SanDisk Micro Cruzer) and it needs to be compatible with Windows, Mac and Linux. Also, I'd rather pay a bit more than buying a cheap flash drive and then it crapping out on me.

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