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 DDR3 DDR2 and what is the difference? Alerter l'administrateur Recommander à un ami Lien de l'article 

1. Burst length (BurstLength, BL)
Because the prefetch DDR3 for 8 bit,hp pavilion dv5-1004tu laptop cpu fan so burst transmission period (BurstLength, BL) also fixed for 8, and for DDR2 and early DDR architecture system, BL = 4 also is commonly used, DDR3 therefore added a 4 bitburstchop (sudden mutation) model, that is, by a BL = 4 read operation to plus a BL = 4 write operation for synthesis of a BL = 8 data burst transmission, when can through the A12 address line to control the burst mode. And it should be pointed out that, any sudden interrupt operation will be in DDR3 memory be prohibited, and will not support, instead more flexible burst transmission control (such as 4 bit sequence burst).

2. Addressing sequence (Timing)
Like DDR2 change from DDR to delay cycle number increases, the CL DDR3 cycle will also improve than the DDR2. The scope of CL DDR2 in commonly 2 ~ 5 between, and DDR3 is in 5 ~ 11 between, and additional delay (AL) design also change. When DDR2 AL range is 0 ~ 4, and DDR3 AL when there are three options, hp pavilion dv5-1004xx laptop cpu fan respectively is 0, CL - 1 and CL - 2. In addition, new DDR3 also added a sequence parameter - write delay (CWD), this parameter will according to the specific work frequency and decide.

3. DDR3 new Reset (Reset) function
Replacement is DDR3 added an important function, and specially prepared a pin. DRAM industry a long time ago to ask for an increase in the function, and now finally in DDR3 realized. This hp pavilion dv5-1005ax laptop cpu fan pin will make DDR3 initialization processing become simple. When Reset command effective, DDR3 memory will stop all operations, and switch to the most minor activity state, to save power.

In the Reset period, DDR3 memory will shut down most of the internal function, all data reception and transmitter will be closed, all internal program device will Reset, the DLL (delay phase locked loop) and clock circuit will stop working, and ignore data bus of any action. In this way, will make DDR3 to reach the purpose of saving electricity.

4. DDR3 new ZQ calibration function
ZQ is also a new feet, in this pin connected to a hp pavilion dv5-1005ea laptop cpu fan 240 ohms low tolerance reference resistance. This pin through a command set, through the chip calibration engine (On - DieCalibrationEngine, ODCE) to automatic check data output driver On resistance and the end of ODT resistance. When the system issued this instruction, will use the corresponding clock cycle (at power up and initialization in 512 after a clock cycle, in exit from refresh operation in 256 after a clock cycle, in other cases with 64 clock cycle) conduction resistance and ODT resistance to recalibrate.

5. Reference voltage is divided into two
In DDR3 system, for memory system work very important reference voltage signal VREF will be divided into two signal, namely for command and address signal service VREFCA and for hp pavilion dv5-1005ec laptop cpu fan data bus service VREFDQ, which will effectively improve the system data bus signal-to-noise level.

6. Point to Point connection (Point - to - Point, P2P)
This is in order to improve the system performance and the important changes, but also with the DDR2 DDR3 a key difference. In DDR3 system, a memory controller only with a memory channel business, and this memory channel can only have a slot, therefore, the memory controller and DDR3 memory module are peer-to-peer (P2P) relationship (single physical Bank module), or Point to two Point (Point - to - two - Point, P22P) relationship (double physical Bank module), thus greatly reduced the address/command/control and data bus load. And in memory module, and hp pavilion dv5-1005ef laptop cpu fan similar DDR2 category, also have standard DIMM (PCS), SO - DIMM/Micro - DIMM (notebook computer), FB - DIMM2 (server) points, including the second generation of FB - DIMM will use specification higher AMB2 (amb).

Facing 64 framework DDR3 obviously in the frequency and speed has more advantages, in addition, because the DDR3 according to temperature automatic self refresh, local since refresh and other some functions, in power loss DDR 3 will much more outstanding, therefore, it may first by mobile equipment welcome, just like the first meet the DDR2 memory is not as desktops but server. In the CPU by ascending the most rapid PC desktop field, hp pavilion dv5-1007ax laptop cpu fan DDR3 future is also a bright. Currently Intel in the second quarter next year is expected to the launch of the new chip - XiongHu (BearLake), which will support DDR3 specifications, and AMD also predicted that at the same time in K9 platform support DDR2 and DDR3 two specifications.

Memory asynchronous work mode contains a variety of meaning, in the broad sense all memory work frequency and CPU external clock do not agree can be called memory asynchronous work mode. First of all, the earliest memory asynchronous work patterns appeared in the early motherboard chipset, can make the memory work in than CPU by high 33 MHZ or low 33 MHZ mode (note simply differ 33 MHZ), which can improve the system memory performance or make old memory continue to play waste heat. Secondly, in normal working mode (CPU not overclocking), at present a lot of mainboard chipset also supports memory asynchronous work mode, such as Intel910GL chipset, only MHZFSB support 533 or 133 MHZ of CPU by, but it can match work frequency for 133 MHZ of DDR266, working frequency for 166 MHZ of DDR333 and working frequency for 200 MHZ DDR400 of normal work (note at the CPU by 133 MHZ and DDR400 work frequency 200 MHZ has differ 66 MHZ), only tie-in and different memory its performance have differences sake. Again, the CPU hp pavilion dv5-1007cl laptop cpu fan overclocking, in order not to make memory tow CPU overclocking ability of the hind leg, right now can turn down memory work frequency so that YuChaoPin, for example, AMD Socket939 interface Opteron144 very easy to overclocking, many products outer frequency can easily exceed 300 MHZ, and this if the memory synchronous work mode, the memory of the equivalent frequency will be as high as DDR600, this is obviously not possible, in order to smooth over 300 MHZ external clock, we can in overclocking before the mortherboard BIOS memory set to DDR333 or DDR266, in excess of 300 MHZ external clock after, the former also however just DDR500 (some acura memory can achieve), while the latter is only DDR400 (completely is normal standard frequency), thus it can be seen, the correct Settings memory asynchronous mode helps to overclocking success.

The mainboard chipset almost all support memory asynchronous,hp pavilion dv5-1008ax laptop cpu fan Intel company from 810 to the current series of relatively new series 875, support, and via the company from 693 after all chipset provides this function.

http://camcorbattery.informe.com/blog/index.php/2012/09/24/the-little-known-windowsxp-hotkey-loopholes/
http://startbattery.insanejournal.com/8569.html

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 28-09-2012 à 08h40

 DDR3 DDR2 and what is the difference? Alerter l'administrateur Recommander à un ami Lien de l'article 

1. Burst length (BurstLength, BL)
Because the prefetch DDR3 for 8 bit,hp pavilion dv5-1004tu laptop cpu fan so burst transmission period (BurstLength, BL) also fixed for 8, and for DDR2 and early DDR architecture system, BL = 4 also is commonly used, DDR3 therefore added a 4 bitburstchop (sudden mutation) model, that is, by a BL = 4 read operation to plus a BL = 4 write operation for synthesis of a BL = 8 data burst transmission, when can through the A12 address line to control the burst mode. And it should be pointed out that, any sudden interrupt operation will be in DDR3 memory be prohibited, and will not support, instead more flexible burst transmission control (such as 4 bit sequence burst).

2. Addressing sequence (Timing)
Like DDR2 change from DDR to delay cycle number increases, the CL DDR3 cycle will also improve than the DDR2. The scope of CL DDR2 in commonly 2 ~ 5 between, and DDR3 is in 5 ~ 11 between, and additional delay (AL) design also change. When DDR2 AL range is 0 ~ 4, and DDR3 AL when there are three options, hp pavilion dv5-1004xx laptop cpu fan respectively is 0, CL - 1 and CL - 2. In addition, new DDR3 also added a sequence parameter - write delay (CWD), this parameter will according to the specific work frequency and decide.

3. DDR3 new Reset (Reset) function
Replacement is DDR3 added an important function, and specially prepared a pin. DRAM industry a long time ago to ask for an increase in the function, and now finally in DDR3 realized. This hp pavilion dv5-1005ax laptop cpu fan pin will make DDR3 initialization processing become simple. When Reset command effective, DDR3 memory will stop all operations, and switch to the most minor activity state, to save power.

In the Reset period, DDR3 memory will shut down most of the internal function, all data reception and transmitter will be closed, all internal program device will Reset, the DLL (delay phase locked loop) and clock circuit will stop working, and ignore data bus of any action. In this way, will make DDR3 to reach the purpose of saving electricity.

4. DDR3 new ZQ calibration function
ZQ is also a new feet, in this pin connected to a hp pavilion dv5-1005ea laptop cpu fan 240 ohms low tolerance reference resistance. This pin through a command set, through the chip calibration engine (On - DieCalibrationEngine, ODCE) to automatic check data output driver On resistance and the end of ODT resistance. When the system issued this instruction, will use the corresponding clock cycle (at power up and initialization in 512 after a clock cycle, in exit from refresh operation in 256 after a clock cycle, in other cases with 64 clock cycle) conduction resistance and ODT resistance to recalibrate.

5. Reference voltage is divided into two
In DDR3 system, for memory system work very important reference voltage signal VREF will be divided into two signal, namely for command and address signal service VREFCA and for hp pavilion dv5-1005ec laptop cpu fan data bus service VREFDQ, which will effectively improve the system data bus signal-to-noise level.

6. Point to Point connection (Point - to - Point, P2P)
This is in order to improve the system performance and the important changes, but also with the DDR2 DDR3 a key difference. In DDR3 system, a memory controller only with a memory channel business, and this memory channel can only have a slot, therefore, the memory controller and DDR3 memory module are peer-to-peer (P2P) relationship (single physical Bank module), or Point to two Point (Point - to - two - Point, P22P) relationship (double physical Bank module), thus greatly reduced the address/command/control and data bus load. And in memory module, and hp pavilion dv5-1005ef laptop cpu fan similar DDR2 category, also have standard DIMM (PCS), SO - DIMM/Micro - DIMM (notebook computer), FB - DIMM2 (server) points, including the second generation of FB - DIMM will use specification higher AMB2 (amb).

Facing 64 framework DDR3 obviously in the frequency and speed has more advantages, in addition, because the DDR3 according to temperature automatic self refresh, local since refresh and other some functions, in power loss DDR 3 will much more outstanding, therefore, it may first by mobile equipment welcome, just like the first meet the DDR2 memory is not as desktops but server. In the CPU by ascending the most rapid PC desktop field, hp pavilion dv5-1007ax laptop cpu fan DDR3 future is also a bright. Currently Intel in the second quarter next year is expected to the launch of the new chip - XiongHu (BearLake), which will support DDR3 specifications, and AMD also predicted that at the same time in K9 platform support DDR2 and DDR3 two specifications.

Memory asynchronous work mode contains a variety of meaning, in the broad sense all memory work frequency and CPU external clock do not agree can be called memory asynchronous work mode. First of all, the earliest memory asynchronous work patterns appeared in the early motherboard chipset, can make the memory work in than CPU by high 33 MHZ or low 33 MHZ mode (note simply differ 33 MHZ), which can improve the system memory performance or make old memory continue to play waste heat. Secondly, in normal working mode (CPU not overclocking), at present a lot of mainboard chipset also supports memory asynchronous work mode, such as Intel910GL chipset, only MHZFSB support 533 or 133 MHZ of CPU by, but it can match work frequency for 133 MHZ of DDR266, working frequency for 166 MHZ of DDR333 and working frequency for 200 MHZ DDR400 of normal work (note at the CPU by 133 MHZ and DDR400 work frequency 200 MHZ has differ 66 MHZ), only tie-in and different memory its performance have differences sake. Again, the CPU hp pavilion dv5-1007cl laptop cpu fan overclocking, in order not to make memory tow CPU overclocking ability of the hind leg, right now can turn down memory work frequency so that YuChaoPin, for example, AMD Socket939 interface Opteron144 very easy to overclocking, many products outer frequency can easily exceed 300 MHZ, and this if the memory synchronous work mode, the memory of the equivalent frequency will be as high as DDR600, this is obviously not possible, in order to smooth over 300 MHZ external clock, we can in overclocking before the mortherboard BIOS memory set to DDR333 or DDR266, in excess of 300 MHZ external clock after, the former also however just DDR500 (some acura memory can achieve), while the latter is only DDR400 (completely is normal standard frequency), thus it can be seen, the correct Settings memory asynchronous mode helps to overclocking success.

The mainboard chipset almost all support memory asynchronous,hp pavilion dv5-1008ax laptop cpu fan Intel company from 810 to the current series of relatively new series 875, support, and via the company from 693 after all chipset provides this function.

http://camcorbattery.informe.com/blog/index.php/2012/09/24/the-little-known-windowsxp-hotkey-loopholes/
http://startbattery.insanejournal.com/8569.html

  Lire le commentaire | Ecrire un nouveau commentaire Posté le 28-09-2012 à 08h39

 Hyper-threading CPU and IE6 not compatible Alerter l'administrateur Recommander à un ami Lien de l'article 

Use hyper-threading CPU computer ibm lenovo thinkpad laptop cpu cooling fan, if use WinXP integrated IE6 browsing web pages, often appear crash phenomenon, solution has three kinds: 1. In the BIOS closed hyper-threading technology; 2. Use other browser browse web pages, such as Netscape and Opera, etc.; 3. Upgrade installation WinXP SP2 package.

By the end of last year the configuration of a computer, and the specific configuration is: the CPU ibm lenovo thinkpad f41 series laptop cpu cooling fan is support hyper-threading of P4 2.4 C GHz, main board is to use the i865PE chipset ShengJi IS7 - E, it plate load 10/100 MBPS adaptive network card and 5.1 track AC '97 sound card, memory is two 256 MB of JinShiDu DDR400 (composition dual channel mode), graphics is ELSA radium 9800 se. The author in the BIOS opened the hyper-threading technology, and install a dual system: WinXP and Win98SE.

The author in the use of the machine discovered that, no matter in the WinXP for word processing, or for graphics, play stand-alone game and network game, or online movies are all normal, chat with QQ is also very normal, but with a WinXP integrated IE6 browser browse web pages, system speed will slow, in task manager in view, found that CPU ibm lenovo thinkpad sl300 series laptop cpu cooling fan utilization rate reaches as high as 100%, which eventually led to crash. According to the Reset button after restart phenomenon still.

The author doubts and firewall, 3721 Internet assistant, trojans or software not compatible and problems. Shut down 3721 Internet firewalls and assistant, after killing virus and so on, are not solve the problem. Finally to format the hard disk and reloading the WinXP SP1 rc system in not to install other application software, the author USES under the condition of WinXP SP1 rc IE6 Internet browsing web pages, there is still a crash phenomenon. Really not solve, and finally the author into Win98SE, dial-up Internet access, with IE6 web, did not appear crash phenomenon. Win98SE does not support hyper-threading (HT) CPU, don't Intel's hyper-threading CPU ibm lenovo thinkpad sl500c series laptop cpu cooling fan and WinXP integrated IE6 have not compatibility problems. So the author in the BIOS turned off the HT technology, never appeared above phenomenon.

http://battery66.allmyblog.com/147-how-to-maintain-notebook-appearance.html
http://cpufan568.1bl.co/2012/09/25/computer-maintenance-commonly-used-several-techniques/

  Lire le commentaire | Ecrire un nouveau commentaire Posté le 26-09-2012 à 03h57

 How to maintain notebook appearance Alerter l'administrateur Recommander à un ami Lien de l'article 

A, how to prevent external appearance of the notebook wear

Whether aluminium magnesium alloy material notebook shell, or engineering plastic material notebook toshiba satellite l650d series laptop cpu fan shell, exterior are easily damaged. We in the process of daily their laptop, hard to avoid can stuttering, or even fall. This requests us in the process of carrying, the best in the laptop bag add a material soft bag a tank so that I can get a cut appearance, in the bumps have a buffer. The most vulnerable notebook appearance is anywhere on the cover of the laptop screen, it is easy to cut, we can buy a mobile phone and protective film similar membrane posted on it; Some characteristics of the pattern and material protective film, not only can protect the appearance, and still beautification the notebook. The most easily loss color notebook appearance of the notebook is off each Angle, we can use more thin tape to stick in the corner, so do not affect beautiful, and can protect the housing color.

Second, how to clean notebook appearance

Notebook toshiba satellite l655d series laptop cpu fan appearance process, sanding, have a piano lacquer that bake, and the metal wiredrawing, some notebook on the exterior easy to leave fingerprints, besmirch, very influence the laptop is beautiful, we when necessary to clean the exterior of the laptop, to prevent an accident, at the start of clean, must shut down, cut off the power supply, tear down the battery. Can use a wet towel touchs some temperature sex detergent and wipe gently with the impression of the hand at ordinary times, where HanJi and remove oil stains, then wash clean towel, use a wet towel to wipe, then nature airing can. There is in use towel when, best softly, slowly, prevent clean more often under accumulation scratch! You can also go to the market to buy notebook clean up the special tools to use, the majority of clean suit 15 yuan.

Three, how to protect the appearance of the site's palm

Palm's protection, palm's problem cannot be ignored, "is also the acer laptop cpu cooling fan appearance of palm notebook to wear one of the place, a lot of users in the use of the notebook when don't pay much attention to, cause wrist watch and jewelry scratch the palm of the part of the lacquer that bake, CPU, labeling, operating system labeling, these places; Time is long, the effect of the laptop overall beautiful, serious still can scratch's palm. We in order to protect the palm's part, should use the laptop in took off watch, hand catenary, good thing; There is in the poster above post some scotch tape, this can effectively reduce the hand of sweat corrosion and good thing the scratch.

Notebook appearance is a whole, we in the process of use and clean up to a matter, be careful not to damage the notebook compaq laptop cpu cooling fan. The appearance of the laptop to each its owner is important, for it don't lose "face" the most important still is in when we used to love it and protect it, give it to create a good use of the environment!

http://laptopaccessories.blogguan.com/view/57502/iphone-5-did-not-possess-three-characteristics
http://cpufan.mihanblog.com/post/8

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 25-09-2012 à 04h56

 Prevent CPU burned several basic measures Alerter l'administrateur Recommander à un ami Lien de l'article 

The computer's CPU toshiba satellite l455 laptop cpu fan waste heat is the largest, and it is hot in summer, if the cooling fans losing effect, could well lead to a CPU has been burned down, and the following author puts forward several avoid CPU was burned down several measures.

First of all, selection of high quality cooling fans.

If AMD processors, had better choose through the AMD authentication of the special fan; If Intel processor is, can consider buying a fan. Some with special design of the fan is also good, for example, there are two fan of "the wind", greatly increased insurance coefficient, can put the fan in the risk of CPU toshiba satellite l500 laptop cpu fan burned stalled significantly reduced.

In addition, to pay attention to the CPU temperature monitoring.

New installed first start machine, shall be immediately into the BIOS to check the CPU temperature and fan speed parameters. At the same time open CPU temperature is too high, high alarm functions, automatic shutdown function, or fan stopped the automatic shutdown etc. Function. Now many of the main board also provide software support under Windows instant CPU temperature monitoring, such as QDI motherboard with StepEasy overclocking function in providing the also provide temperature monitoring function, asus motherboard ASUSPROBE in hardware monitoring can also display CPU toshiba satellite l505-10j laptop cpu fan temperature, and so on.

Note: in order to cool the heat work is also required.

The best arrangement of attachment a plane disorderly, and can not only prevent CPU fan fan leaves be accidentally gets stuck, also can better keep the air smooth circulation. The suggestion case fans, actual proof, in power with the fan below (vertical case) in the next to the CPU, cooling the effect will be better than no installation fan improve a lot. And, of course, to install a panel fan into wind the effect will be better. Many software to reduce the temperature is CPU toshiba satellite l505-11d laptop cpu fan temperature helps a lot, but in the practical application to see, the effect is not very ideal, no suggestion as a main cooling method.

You don't want again to high frequency littlebanyan overclocked CPU, had already large heat of high frequency CPU overclocking once is added fuel to the fire, not only hard to ensure that the system is stable operation, the CPU was burned down the likelihood of will greatly increase. In addition, use dormancy should be set when the CPU fan not stopped and the CPU power consumption when dormancy set to 0%, let the CPU toshiba satellite l505-138 laptop cpu fan in dormancy as far as possible when reduce fever, is also the necessary method to prevent burned.

http://batterycharger06.zeblog.com/592907-display-card-common-fault-a-comprehensive-solution/
http://chargerbattery.blogdetik.com/2012/09/24/display-card-common-fault-a-comprehensive-solution/

  Lire le commentaire | Ecrire un nouveau commentaire Posté le 25-09-2012 à 04h34


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