A definitive 'differences between Intel desktop CPUs' thread (Kaby Lake)

mikeymikec

Lifer
May 19, 2011
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At least hopefully definitive after corrections/edits etc :)

After someone's thread about a Pentium Bronze/Silver/Gold incoming for the eighth series I thought it might be handy to recap.

For the purposes of figuring out the differences, the first comparison I've used is the Celeron G3930 versus the Pentium G4600 on the Intel site. I've omitted core clock differences as those vary depending on which two processors one might compare.

Celeron:
2 cores / 2 threads
2MB cache
Lower DDR4 speed support (DDR4-2133)
GPU: HD 610, 1.05GHz max freq (50MHz lower)
No HyperThreading support (no surprise there)

Pentium:
2 cores / 4 threads
3MB cache
DDR4-2133/2400 support
GPU: HD 630, 1.1GHz max freq

Second comparison: Pentium G4600 / Core i3-7100

Core i3:
i3 has 3MB SmartCache (shared CPU cache so a single core can use the entire cache)
i3 has Intel Optane memory support
i3 has AVX2

Core i3-7100 / Core i5-7400

Core i5:
i5 has 4 cores / 4 threads
i5 has 6MB SmartCache
i5 has TurboBoost (when under load, one or more cores go beyond the 'maximum' frequency for a short time)

Core i5-7400 / Core i7-7700

Core i7:
i7 has 4 cores / 8 threads
i7 has 8MB SmartCache
i7 has TSX-NI, SIPP.

Differences inside of each category:
Not all HD 630 GPUs are the same; example: i5-7400 vs i5-7600, the 7600 has a 150MHz higher GPU clock. If the GPU is important to you then I would recommend checking the specs of the ones you're comparing.

Suffixes (letters on the end of the processor model number):
K: Unlocked multiplier (more easily overclockable), also usually clocked a little higher than its non-K counterpart. Doesn't come with a CPU cooler!
T: Lower-clocked processor so it draws less power than its non-T counterparts
E: Embedded (not a normal desktop CPU that goes into a socket)
X: High-end CPU, overclockable, different socket (2066 vs the standard 1151)

After this I might do another thread with the differences between Intel mobile processors. It would be logically useful to do the same with AMD's line-up too, whether I'll get that far is another question.

If anyone has any suggestions what to include, feel free to reply or PM me. My idea with this thread was to have the most brief and concise rule of thumb guide for helping people choose between the processor classes.
 
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Bouowmx

Golden Member
Nov 13, 2016
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Why differentiate cache of Pentium and Core i3? They're both "Smart".

Coffee Lake makes Kaby Lake largely irrelevant.
 

kwalkingcraze

Senior member
Jan 2, 2017
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I believe Intel will sell both Kaby Lake refresh and Coffee Lake at the same time. Pentium Gold and Pentium Silver exist now, and I wouldn't be surprised if there's a Coffee Lake Pentium Gold.
 
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