RayLopez99 said:
The below chip has a 3DMark Vantage CPU score 3x my present Core 2 Duo
chip. Does this mean that my system will be three times faster for
everyday work? So instead of waiting three seconds I only wait one
second? Obviously let's ignore network latency issues.
RL
Intel Core 2 Extreme QX9650 $1069.00 Product details Tom's Hardware
3DMark Vantage - CPU Score 12593
A better metric, is to compare SuperPI benchmarks for the two processors.
SuperPI is single threaded, and will give a pessimistic estimate of the
speedup.
An even easier way to compare, is to take the clock speed ratio
(since both of your examples share architectural characteristics).
If the original Core2 ran at 2.4GHz and the new one runs at
3.0Ghz, then roughly speaking, the *minimum* improvement to be
expected is 3.0/2.4 . And for some people, they can get there
for free, by overclocking the core of their old processor.
Some modern multimedia software is multithreaded, but a lot
of the other things you do with a computer are single threaded.
Consequently, for those, you would not expect to see a big speedup.
Multithreading is the key. Without it, the $1069 processor would be
wasted.
You really need to consider two kinds of benchmarks, the single
threaded ones, and the multithreaded ones. Tomshardware has only
the latter type. Computing activities can fall into either camp.
On my machine, the majority of applications do not peg all the
cores at the same time, so I rely more on single threaded benchmarks
for performance estimates. While certain background activities can occupy
a second core, I don't count that as significant.
You cannot compare clock rates, between processors with different
architectures. For example, I have a P4 running at 3.1GHz and
also an AthlonXP 3200+ running at 2.2GHz, and they do the following
benchmark in 45 to 50 seconds. The Core2, using a single core,
blows away those results. The processor used here is an E4700
at 2.6GHz nominal. The core clock is lower than the P4 at
3.1GHz, and yet it is significantly faster.
-------------------------------------------------------SuperPI Memtest 1.65
-------------------------------------------------------1M (sec) Bandwidth
-------------------------------------------------------lower is (MB/sec)
------------------------------------------------------- better
200 x 13 = 2.60GHz, FSB800, DDR2-533, Single channel 24.05 2203
(stock) Dual channel 22.87 2668
266 x 10 = 2.66GHz, FSB1066, DDR2-533, Single channel 23.47 ----
Dual channel 22.52 ----
266 x 13 = 3.46GHz, FSB1066, DDR2-533, Single channel 19.37 2419
Dual channel 18.42 3305
The SuperPI benchmark is available here. (The originating web site
is sending RST packets right now, so use the archived copy, and
download the super_pi_mod-1.5.zip file.)
http://web.archive.org/web/20070823114006/www.xtremesystems.com/pi/
If you identify your processor model, there is a web site that
stores benchmark results from all over the world. And is a good
source for quick estimates.
HTH,
Paul