Best CPU for single-threaded performance by Q4 2014/Q1 2015

[Phynaz]

Don't the Xeon's have more cache than the desktop CPUs?

 

[DrMrLordX]

Don't the Xeon's have more cache than the desktop CPUs?

Haswell-E undoubtedly has more L3. A 5820k has 15 mb L3, while the G3258 has 3 mb. The 4790k has 8 mb L3.

Now that you put it like that, if you were to run up the clockspeed on one core, any of the Haswell-E chips should be able to challenge or beat DC or the G3258 on clockspeed AND bring much more L3 cache to the table while doing so. So, Haswell-E should theoretically be faster for single-threaded workloads when specifically tuned for that purpose.

 

[Homeles]

Haswell-E has up to 3MB LLC/core, whereas standard Haswell has up to 2MB LLC/core, although the exact configurations can mess with those ratios. The highest end SKU has 45MB L3 and 18 cores.