Hyper-Threading

[Curio]

I haven't been paying attention to the CPU market for the past 18 months or so....

Which Intel desktop chips have Hyper-Threading these days? When the i-series came out it seemed simple. Basically, i3 and i7 had it - i5 didn't, right? Now it looks like some i5's do have it? In which case, what separates i5 from i7?

I have Googled, but found conflicting reports. Intel's own site says the i5 has Hyper-Threading, but then in the spec sheets for cores/threads it says 4/4

I'm dazed & confused

 

[reddev85]

On socket 1155 and 2011, none of the i5 chips have HT, but all of the i7 chips do, not sure about 1366. The i3 chips (only dual core) have it also.

 

[Mr Krugga]

i3 Series are dual cores, support HT.
i5 series are quad cores, no HT support.
i7 series are quad cores with HT support.

The previous generation (1156) had some i5 dual cores with HT support as well.

The 1366 socket CPUs are all i7s with four or six cores and HT support.

 

[Dan2kx]

And i7 2011 socket has 6 cores (with HT)

 

[cmndr_andi]

As above, though there is a single LGA 1155 i5 chip which is a dual core with hyperthreading enabled - this is the 35W i5 2390T. However, this chip is a bit of a special case - since it is made for low power computing. All the other i5 sandy bridge desktop CPUs are quad cores with no hyperthreading.

That said, it is very different for mobile CPUs, for these chips you need to be VERY careful - as all the i5 and many of the i7 Sandy bridge chips are dual cores with hyperthreading. Only the top-end i7 mobile chips are actual quad cores (with hyperthreading enabled), these have a "Q" after the product number.

 

[Curio]

Thanks, guys

 

[xsistor]

And i7 2011 socket has 6 cores (with HT)

with the exception of the the i7 3820 which is 4 cores with HT