For toshiba satellite l675-s7018 laptop cpu fan
the players for friends, respectively i3 / i5 / i7 affirmation is not a problem, if the pouch full of words, may be directly on the i7 980 x. But more ordinary users in the CuanJi or when the choose and buy will still have a lot of doubt, they only have to when the choose and buy will meet how to distinguish i3 / i5 / i7 this kind of problem.
As there are so many ordinary users don't know i7 also have two kinds of interface, the i5 can also be used for H55 on the mainboard feel very surprised, i3 collocation P55 output problem is full of doubt... So a variety of vary;
I7 support 3 channel i5, i3 does not support
I7 QPI bus technology i5, i3 use SMT
I7 4 nuclear 8 thread i5 4 nuclear 4 thread i3 dual-core 4 thread
I7 1366 interface i5, i3 1156 interface
I7 X58 chip (double chip) i5, i3 P55 H57 H55 chip (single chip, integration of the previous north and south bridge function)
I7 current i7 no integrated GPU i5, i3 new out i5 6 * * series and i3 integrated the GPU
I7 four nuclear and support hyper-threading i5 four nuclear, does not support super
I7, i5 support gruppo frequency technology (that is, in the toshiba satellite c630 series laptop cpu fan
operation of certain programs than the default frequency higher) i3 does not support the technology
First explain "I7 1366 interface i5, i3 1156 interface" this article, I7 9 series CPU has 1366 stitch (each root stitch can be understood as a root of the circuit connection), so to have 1366 interface X58 motherboard; I7 eight series, i5, i3 are 1156 stitch, so need to have 1156 interface P55, H57, H55 motherboard
I7 support 3 channel is to point to it supports memory composition three-channel (at least three root memory), can make the performance get corresponding ascend; I5, i3 does not support means they only support dual channel memory, rather than three-channel speaking, memory performance to the corresponding weaken.toshiba satellite c640 series laptop cpu fan
But not all i7 support three-channel, only i7 9 series is support three-channel (such as i7 920), and i7 8 series only support dual channel (such as i7 860). But increase a memory channel for the ascension of the system performance is relatively weak, unless the CPU for very tall to the requirement of data memory, double channel has a tight comparison, so i7 9 series is not better than i7 8 series obvious advantages
"I7 using QPI bus technology" and "i7 X58 chip (double chip) i5, i3 P55 H57 H55 chip (single chip, integration of the previous north and south bridge function)" the two sentence is corresponding relation, with i7, before the Intel 775 series CPU have forepart bus design, Intel motherboard, occurrence, agp design, but also correspond to one forepart bus, CPU through the front end bus and memory for data exchange, it will form bigger transmission bottleneck. Series 1366 CPU first cancelled forepart bus this traditional design, but the CPU internal integrated the memory controller, called QPI bus, not through the chipset direct access memory, memory performance greatly improved, but the main board toshiba satellite l20 series laptop cpu fan
top still have occurrence, chipset double chip; For series 1156 CPU, simply even PCI - E controller is integrated into the CPU internal, make chipset work were grabbed off the CPU, so P55, such as H55 motherboard above occurrence of only (and do not let the occurrence of) the single chip. QPI and SMT is not a kind of concept, no comparability, SMT means "synchronous multithreading"
"I7 4 nuclear 8 thread i5 4 nuclear 4 thread i3 dual-core 4 thread" and "i7 four nuclear and support hyper-threading i5 four nuclear, does not support hyper-threading" two is a causal relationship. I7, i3, i5 6 series support hyper-threading technology, i5 7 series do not support, the so-called hyper-threading refers to the CPU core idle resources make to simulate a core that performance improved significantly. Hyper-threading make a core can simulate into two logical core, called double thread. So i7 four nuclear support hyper-threading is one of the four nuclear eight threads, i5 7 series four toshiba satellite l30 series laptop cpu fan
nuclear does not support hyper-threading, is one of the four nuclear four threads, i3 dual-core, i5 dual-core support hyper-threading, dual-core is four thread. But although hyper-threading can make CPU core virtual increase a times, but the core of the simulation with the real physical core than up still have a certain performance gap, so the same frequency i3 performance is not beyond i5 7 series
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http://laptophardware-cpu.blogspot.com/2012/11/old-notebook-computers-save-electricity.html
