I5 and i7 skt 1156 (why i7?)

[baldinie]

I'm a lil confused with intels new naming system...which am sure is their intetnt just like nvidia.

but why is the new skt 1156 860 and 870 an i7? when the 750 is an i5?

all 3 have the DMI connector and dual channel ddr3 controller not the QPI and tripple channel as on the proper i7s (920, 950, 965 and 975)

can anyone tell me what the difference between i5 750 and i7 860 and 870 are? (other than clocks)

thanks

 

[xaira]

i dont think anyone fully understands why 1156 wasnt just left for i5, but heres the skinny, 1156 quad core with simultaneous multi threading (SMT) for a total of 8 threads = i7
http://img205.imageshack.us/img205/6717/taskmanagerfk1.jpg

1156 quad core without simultaneous multi threading (SMT) for a total of 4 threads = i5

http://img164.imageshack.us/img164/8140/noiseninjara2.gif

 

[welshmousepk]

basically, i7's are the ones with hyperthreading tech.

if they have hyperthreading, they are i7's. the different sickets are basically because the 1366 socket is pretty muich a server board. wheras 1156 is the general computer board. so i7's are still the high end processors, but 1366 is reserved for server performance (hence triple channel memory and such)

 

[baldinie]

ohh, cheers!

that hyperthreading doesn't seem to give the i7's that much of an edge though (in benchmarks the i5 750 is right with the i7s).
Also, i heard that none of the P55 mobo's will be supporting SLI, that still true?

 

[laluma22]

hi ehm about sli no thats not tru the p55 from intel DP55SB extreme is suporting sli and crossfire and i am sure because while gigabyte produces mainboards almost exactly like intel they will also have sli and about asus i dont know they almost just take te chipset from intel.

my choice would be iif you take a i5 take the DP55SB extreme series cause as i know the i5 schould be easy to overclock because it is almost low poweer.
i hope i could help
if i also may ask how much money woul you like to spend and what do you want to buy.

greets laluma22

 

[cjl]

I believe it's the number of threads:

8 threads=i7 (quad with HT)
4 threads=i5 (quad w/o HT, dual with HT)
2 threads=i3 (dual w/o HT)

 

[baldinie]

its the fact that the p55 chipset doesn't support full 16x16x SLI, but does support ful 16x16x crossfire. that still true?

Read an article bout a month ago claiming that nvidia's "power of 3" marketing (i5, p55, sli) is complete nonsense since its only 8x8x. (just to comabt AMD's dragon platform).

 

[laluma22]

ehm yeah it does not support x16x16 but x16 x8 as it is shown on the intel site and also this mainboard is quite new release date should bbe 3days ago thats what a women of intel told me while i was on the suport about my old pc.

 

[baldinie]

so it doesn't really support full sli? but the crossfire is ful 16x16x?

 

[laluma22]

i just looked up a bit on inet the intel mainboards do not support 2x x16 2.0 sli
but all of the gigabyte mainboards do suport sli and crossfire so full sli^^
GigaByte P55-UD4
GigaByte P55M-UD4

but do you really need sli?
maybe just one graphic card is enaugh like a gtx 285 or 295