The purpose of the testing is the study of the capacity of memory devices and identifying differences in overall productivity laptop depending on the capacity of memory.
While testing and the production of computers, the results of this study are applicable to desktop systems.
In the hands of the authors, two virtually identical laptop Dell Inspiron, they differed only type of memory : in a Dell Inspiron 2200 was 333mgz DDR, and the other a Dell Inspiron B120 DDR2 533mgz
The purpose of the testing was not a thoughtful speculation on the impact of modern architecture tyres memory by the number of iterations per second same modern laptop. The aim is to provide readers objective, easy-to-understand most ordinary users of information on the ratio of цена/производительно��ть for the purchase of a new or used computer
Notebooks represented in the testing, belong to the so-called "budget" and the sector as new charges at the time of writing of $ 700, in the ideal of about $ 500.
So our notebooks :
1.Dell Inspiron 2200 Celeron Mobile 1400Mhz (1Mb L2, Dothan) / 512Mb DDR apps / micro processor MU06D820
2.Dell Inspiron B120 Celeron Mobile 1400Mhz (1Mb L2, Dothan) / 512Mb 533Mhz DDR2 Dual Mode / micro processor MU06D820
Both laptops have the same Linux, but they little interest in the future of our comparative testing and the same image cache Intel 910/915, which will contribute to the objectivity of our testing in the 3D tests.
Stem our Dothan processors is nothing less the second version of the kernel famous processor platform for mobile computers Intel Centrino, original core processor which has been code-named Banias. Are these kernel technology of 130enm (Banias) and 90enm (Dothan) and the amount of cache integrated second-level (L2) version of Banias and the GFDL Dothan. Thus, terrible for many ordinary Celeron word, in this case, means only a full-fledged, and even improved through architecture kernel Pentium Mobile on the kernel Banias. Therefore, in selecting a laptop necessarily interesuytesy kernel architecture of the processor, it may be that Mobile Celeron will be powerful Pentium Mobile from the differences in the architecture, and memory, as we have found out they have the same volume of 1 megabyte of data. And the difference in price can be a time not for the benefit seems to be full Pentiuma, which actually turns out to be worse than the Celeron. Fair, it should be noted, that the processors are Mobile Celeron processor at Banias c of secondary cache, and the Celeron is indeed will be the �изкопроизводительны�� from the entire Centrino family of processors, if processors with the same frequency, of course.
To begin, we tested notebooks with a classic test SiSoftware Sandra Professional Edition 2004.10.9.133
The arithmetic and multimedia processor tests were, as expected, identical. 6015/1941/2483 for B120 and 6019/1942/2483 for 2200 as a result of arithmetic test. The figure here is the number of integer operations per second second test coprocessor for floating point and the third test unit manufacturer instructions for floating point, all numbers are in millions, or they will still have to replace six zeros to get the real number of transactions per second. The multimedia processor test : 13269/14655 (B120) and 13277/14655 (2200). Multimedia test Sandra run specialized units MMX instructions, Intel SSE and modern processors on the productivity, measured in the number of operations per second.
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To keep readers unnecessary in the sense that they know, we observe that to pay attention is primarily on the figures and the unit is ultimately Dzeņu parrots from the old Soviet cartoon "38 parrots." And since the results of the test will be performed only at the specific text of the testing, we even do not indicate every time that the fugitive at the time of the specific "parrots."
Test capacity memory to B120 showed 2281/2291 (for transactions with whole numbers and the numbers the float in megabytes per second) and for 2200-2123/2117. That is already here it makes sense to talk about the superiority of some 533 megaherzova memory 333mgz over. Many users naive to believe that every memory frequency is at the (533 shares at 333, multiply by 100, and deduct 100), 60% of the productivity and it should be for the same value. However, the reality was far from the case. For operations with whole numbers produced 2281/2123 * 100-100 = 7.4% difference in the memory performance, and on the float : 2291/2117 * 100-100 = 8.2% margin.
Note that the Inspiron 2200 numbers of floating point less than whole numbers and the Inspiron B120 contrast, the memory goes faster numeric the float.
To assess the extent of visual range, construction diagram :
Then consider the results of a joint test cache and memory from the same Sandra. For B120 .3 4598/11 and 4396/12 2200 .8 (the first figure is the average bandwidth in megabytes per second, depending on the size of blocks of the information transmitted, and the second figure is the average logarithmic factor analogue of the first issue, but received no other way and actually expressed in popugaah, measurement is known only developers Sandra. And the reverse is important, that is, the smaller the better). The difference was : 4598/4396 * 100-100 = 4.6% and 12.8 / 11.3 * 100-100 = 13.3%. Here, we meet for the first time with such strong differences in the results of testing, and in fact in the same test. Our task, however, is the evaluation and selection of the best and most reliable programs for the testing, so you just have to take as a result of this, and the outcome of the testing will try to comment if there will be arguments.
I would also like to say that the average difference in the memory performance on the test (13.3 4.6) / 2 = 8.95 is much more similar to our previous results of 7.4 and 8.2 while still out of the 5% margin of error measurement certified developers Sandra. Our chart on the test :
The next test instrument known by the 3DMark. We used version of the program from 2003 3DMark03 because, in more recent versions of a test to popugaah has less dimension than previous versions and with the further comparative testing with the desktop systems 3DMark05, for example, simply refused to work because they were not able to fulfil their sverhtrebovationa tests for older systems.
Itself 3DMark package designed to test primarily graphics computers, but since the video in our study computers, the same Intel 910/915 and uses a video system memory notebook, or it is the purposes of our study, the image tests just to identify differences in the speed of system memory.
Since the testing results 3DMark have some meaningful in our studies dispersal, we have three tests on each laptop and usrednali assessment for each. Testing is in the default mode for screen resolution 1024x768 pixels without sound tests. The Dell Inspiron 2200 is the 770 3DScore (parrots) and for Dell Inspiron B120 795 3DScore differences in the rate of 795/770 * 100-100 = 3.2%
Make a note of caution on the topic. Because B120 notebook is a so-called matrix shirokoformatnuu c WXGA maximum resolution 1280h800 points we had a test for him also in this mode, the screen. Evaluation of 642 3DScore. For comparison : in a 1024 * 768 of the 786,432 points in the 1280h800 1024000 pixels on the screen. The difference is 1024000/786432 * 100-100 = 30.2% and the difference in productivity 795/642 * 100-100 = 23.8% Thus, buying laptop with large matrix, you obrekete a less performance at the Games with the same characteristics of the processor and video card, as soft classical permission. Of course, you can play and the large matrix in the classical treatment but matrix for the most part have a much worse image in the treatment than the maximum.
Next, we have tested in the old, but the serious Final Reality. The study is the Image tests, as well as 3DMark but have separate estimates on the two regimes. The policy (Direct3D software) mode, all obsceta graphic scenes is the CPU, and the "Iron" (Direct3D accelerator board), a graphical videokontrollerom system. For Dell Inspiron 2200 evaluation of 14.25 / 16.44 Reality Marks for the programme and the "Iron" regimes respectively. For Dell Inspiron B120 14.60 / 17.52. The difference in productivity was : on the programme regime 14.60 / 14.25 * 100-100 = 2.5% and for the treatment videouscoreniem 17.52 / 16.44 * 100-100 = 6.7% average difference (2.5 +6.7) / 2 = 4.6%
In the last test, we used to talk WinRar archive, which is the single most realneixei challenge to the results that we have been making every day when you work on your computer and on the speed of this particular application depends directly the results of our work.
At this stage of testing done archive file of 325 megabytes, a 22% contraction from the original level of the best compression ratio with the size of the dictionary 4096 bytes. The Inspiron 2200 now back at 185 seconds, and Inspiron B120 171 seconds. The difference in the productivity of our systems on the test was : 185/171 * 100-100 = 8.2%
Also in WinRar version 3.41, which we have, there is built-in function testing computer, which was built on their own vinrarovskih popugaah. Evaluation on this is not real and synthetic test was : the Inspiron 2200 291 parrots for Inspiron B120 313 parrots. The difference : 313/291 * 100-100 = 7.6%
Making another way. We pulled away the memory of 256 megabytes of Inspiron B120 and Testing WinRar again already to the system memory of 256MB. The real test of archiving WinRar 184 seconds for 301 Indemnity parrot.
According to the results we find two things : One is to increase the amount of memory in your computer / laptop does not entail a change in the performance of real tasks. That increasing RAM from 256 to 512 megabytes you get double the speed of the operating system or two more frames per second at the Games. The difference is significant only for serious resource processes, working with Bolshimi than the available RAM objects. Remember when you last worked in a text editor with the paper size of 100 megabytes? Do not remember? Or never worked? The increase in memory will increase the overall performance of your computer no more than 184/171 * 100-100 = 7.6%, or 313/301 * 100-100 = 4.0% even less and not even seem close to 512 megabytes share of 256 megabytes, we get 200% margin on the initial value.
And secondly, Computer Memory 256 megabytes and memory frequency 533 megaherza will still be faster computer memory 512 MB 333 MHz megaherza at 185/184 * 100-100 = 0.5% or 301/291 * 100-100 = 3.4% for standard household tasks.
Look at the total figure of our testing results :
Our testing quite convincingly dispels the myth in the minds of consumers, that the intensity of the memory is a direct measure of performance of modern computer systems. Indeed, the overall performance of the computer depends not only on the frequency of its constituent components, in this case the memory but also on how these components are connected, that is, of Architecture chipset motherboard, a set of relationships between individual components, such as the processor, memory, video, hard drive, and others. Also what can be sproederovano influence on the frequency of the processor's overall productivity system. There is not always the computer / notebook with a processor less
seemingly frequency shows Bolshuu productivity in the real challenges and synthetic tests than computer with Bolchei frequency. The results productivity advanced computer systems affects not only about architecture processors with other components, and the internal architecture of the processor, as well as the amount of internal cache who is responsible for the acceleration of work to RAM computer, and trying to ensure the same 60% of the difference in the frequency and as a theoretical investigation in productivity, but as we can see, in practice, this result is not very successfully.
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Influence of the frequency of RAM on productivity notebook