By: Mark Roulo (nothanks.delete@this.xxx.com), January 8, 2015 6:37 pm
Room: Moderated Discussions
juanrga (nospam.delete@this.juanrga.com) on January 7, 2015 6:03 am wrote:
> I recall Aaron asking me why I believed that mixing VLIW with RA was a good idea. Funny, because we know now that
> Denver is an in-order VLIW+RA core that outperforms wide OoO cores such as Cyclone or Haswell.
Have you not noticed that nVidia did not select the fastest 15W Haswell CPU they could?
The 2955U Celeron is a 15W TDP part with no hyperthreading, a clockspeed of 1.4 GHz and 2 MB of L3 cache. Turbo-boost is disabled.
The 4650U is *also* a 15W TDP Haswell part, but it has a base frequency of 1.7 GHz, 4 MB of L3 cache and will turbo to 3.3 GHz.
Eyeballing the nVidia chart, the Denver (@ 2.5GHz?) beat the 2955U by about 10% on SpecInt2000. My guess is that a 4650U would beat the Denver chip by close to 2:1. When you lose by 2:1, you aren't "outperforming".
If you want to do a technical comparison between Denver and Haswell, you really do have to pick the fastest relevant Haswell part, not the slowest.
Why are you so invested in 1000 core CPUs?
> I recall Aaron asking me why I believed that mixing VLIW with RA was a good idea. Funny, because we know now that
> Denver is an in-order VLIW+RA core that outperforms wide OoO cores such as Cyclone or Haswell.
Have you not noticed that nVidia did not select the fastest 15W Haswell CPU they could?
The 2955U Celeron is a 15W TDP part with no hyperthreading, a clockspeed of 1.4 GHz and 2 MB of L3 cache. Turbo-boost is disabled.
The 4650U is *also* a 15W TDP Haswell part, but it has a base frequency of 1.7 GHz, 4 MB of L3 cache and will turbo to 3.3 GHz.
Eyeballing the nVidia chart, the Denver (@ 2.5GHz?) beat the 2955U by about 10% on SpecInt2000. My guess is that a 4650U would beat the Denver chip by close to 2:1. When you lose by 2:1, you aren't "outperforming".
If you want to do a technical comparison between Denver and Haswell, you really do have to pick the fastest relevant Haswell part, not the slowest.
Why are you so invested in 1000 core CPUs?
