Quad Core benchmarks

[jinydu]

There is also no benchmark for Core 2 Quad, which I imagine could be great for GIMPS.

[S485122]

Originally Posted by jinydu

There is also no benchmark for Core 2 Quad, which I imagine could be great for GIMPS.

There may come some change to that situation in the next two weeks ;-)
The quad core turns ought to be cheaper than other solutions if one calculates the ratio of cpu power per price unit (only one motherboard, disk, motherboard...)
More important : the ratio of cpu power per energy cost is also higher.

[jinydu]

http://www.mersenne.org/bench.htm

Quad core is slower than dual core?!

[axn]

Originally Posted by jinydu

http://www.mersenne.org/bench.htm

Quad core is slower than dual core?!

You mean faster, don't you?

[rx7350]

The QX6700 is essentially two E6770s stitched together, and if you look at the iteration times for each on the benchmarks page, they are almost identical. The next system I build for GIMPS will be a quad core, but the price is going to have to come down considerably before I do so. Also, from other forums, it seems there is a substantial heat issue when all four cores are at 100%.

[jinydu]

For all but one of the FFT sizes, the quad core is slower than the dual core. I would have expected the quad core to be much faster.

[axn]

Originally Posted by jinydu

For all but one of the FFT sizes, the quad core is slower than the dual core. I would have expected the quad core to be much faster.

jinydu, I think you are completely ignoring the clock speed and comparing a higher clocked Duo to a lower clocked Quad. If you compare like for like, you'll see that there is pretty much no difference (or even that Quad is faster).


EDIT:- Why would you think a Quad core will be "much faster"? These are single threaded benchmarks -- number of core shouldn't affect it one way or the other.