I7 990x vs i7 3960

[ramune123]

Hello,

Which porcessor is faster for a SINGLE Process/Thread. This isn't a typical real world which is better.

Think assembly code.

Are there any other available x86 cpu's which would be faster?

Overclocking is a consideration, but this disregards, kernels, OS. its just purely assembly.

 

[k1114]

Single thread, an ivy bridge cpu would be faster.

 

[Deleted member 217926]

The newer architecture of the i7 3960 gives it a 10-15% boost clock for clock. An Ivy Bridge processor would be another 5-10% faster clock for clock but there are no 6 core Ivy Bridge processors yet. The 6 and 8 core Ivy Bridge-E should be released at some point.

Edit: Ivy Bridge-E is not slated for release until Q3 2013.

http://www.tomshardware.com/news/Ivy_Bridge-E-LGA_2011-X79-cpu-mobo,16588.html

 

[ramune123]

should i be comparing turbo boost clock speed or base clock speed?

 

[k1114]

Ghz vs ghz of different architectures will perform differently. As anort explained, if an ib and sbe cpu are clocked the same, ib will be more performance. But for a desktop, it will most likely stay in turbo at all times under load. If it's just one thread then why would getting IBE 6 or 8 core matter.

You could make a post in the systems section and fill this out. http://www.tomshardware.com/forum/353572-31-build-upgrade-advice We would be much more suited to picking a cpu as well as the other parts.

 

[Deleted member 217926]

^ This.

Clock for clock means at the same speed. So assuming both processors are overclocked to a modest 4Ghz with Turbo off the newer Sandy Bridge architecture will be somewhere between 10-15% faster depending on the benchmark used to test it.

Here is a direct comparison. The 990X loses as you can see despite a very slight clock speed advantage.

http://www.anandtech.com/bench/Product/444?vs=443

Ivy Bridge has a newer and even more efficient architecture than Sandy Bridge to the tune of an additional 5-10% clock for clock. There are no Ivy Bridge processors with more than 4 real cores ( 8 threads with Hyperthreading ) yet for a direct comparison.

 

[proffet]

http://www.bit-tech.net/hardware/cpus/2012/05/01/intel-core-i5-3570k-cpu-review/3
just a little comparison in some charts..

 

[esrever]

a 3570k would be faster than both.

 

[proffet]

in what.?
3960X and 3770K might have something to say about that..

 

[Deleted member 217926]

in what.?
3960X and 3770K might have something to say about that..

He is correct that a 3750K is faster clock for clock than a 990X or 3960X as I and k1114 already explained earlier in the thread.. In a heavily threaded environment the 6 core chips win easily though.

 

[proffet]

oh, faster per clock, yes understood.
thanks.

 

[amuffin]

Are you going to upgrade from a 990X to a 3960X?