What OS are you using?  I'm running on a 6-core, faster Xeon, and my rate is way below yours (OSX).  Are you using SSE or a GPU to get these rates?

Just want to make sure I understand this correctly.

The next hash that the Bitcoin client running on my old single-core laptop has just as much chance of solving the block as does the next hash performed by a miner running on the most souped up GPU-aided hardware out there, right?

The only difference is that the number of attempts by the miner is an order of magnitude or greater than the number of attempts by me.

Is my understanding of this correct?

device: AMD Athlon(tm) 64 X2 Dual Core Processor 6000+
cpu MHz      : 2999.654
cores: 2
hashespersec: 2816639

device: GeForce 8600 GT (m0mchil OpenCL miner)
gpu MHz             : 1188
cores: 4
hashespersec: 5666000

from old single-core laptops to souped-up GPUs,
here's some more info to look at  

== CPUs ==

model name   : Pentium(R) III mobile
cores      : 1
cpu MHz   : 1066
khash/s   : 300
miner      : default 0.3.1x
os      : Windows2000

model name : Intel(R) Atom(tm) N270
cores      : 1
cpu MHz   : 1600
khash/s   : 420
miner      : default 0.3.1x
os      : WindowsXP

model name   : AMD Phenom(tm) II X3 720
cores      : 3
cpu MHz   : 2800
khash/s   : 3800
miner      : default 0.3.1x
os      : WindowsXP

model name   : AMD Phenom(tm) II X3 720
cores      : 3
cpu MHz   : 2800
khash/s   : 7200
miner      : jgarzik's cpu-miner 0.2.1
os      : WindowsXP

== GPUs ==

model name   : Nvidia GTX260
cores/sp    : 27/216
shader MHz   : 1242 (OC 1432)
gpu MHz   : 575 (OC 680)
khash/s   : 37500 (44000)
miner      : m0mchil's OpenCL
os      : Windows7

model name   : ATI HD5570
cores/sp   : 5/400
gpu MHz   : 650 (OC 700)
khash/s   : 59000 (64000)
miner      : m0mchil's OpenCL
os      : WindowsXP

model name   : ATI HD5850
cores/sp   : 18/1440
gpu MHz   : 725 (OC 925)
khash/s   : 236000 (300000)
miner      : m0mchil's OpenCL
os      : WindowsXP

Here are two additional statistics:

Model name    : Intel(R) Core(TM) i5 CPU       M 450  @ 2.40GHz
OS                : Microsoft Windows 7 x64
Client version : 0.3.17
Core speed     : 1197.3 MHz
Multiplier:      : x 9.0
Hash rate       : ~1800 khash/s

Model name   : ATI Mobility Radeon HD 5650
OS                : Microsoft Windows 7 x64
Client version : 0.3.17
GPU clock      : 550 MHz
GPU MHz       : 933.000
Miner            : m0mchil's OpenCL
Hash rate      : ~48,000 khash/s

I apologize for the lack of other information; I am not a computer-savvy person. However, if other members could define the needed specifications or explain how to obtain additional precision, I would be glad to provide the data.

On a side note, my i5-450M seems to have a lower hash rate than racerx's i3-350M. Is there an optimum parameter for the processors that I should use to obtain higher hash rates?

Thank you; I set the parameters to use all of the cores available and the client started to obtain ~1800 khash/s. There seems to be a large fluctuation between the hash rates, though - the range of the hash rates is 750-1800 khash/s.

my guess would be the 4way-switch, improvement on Phenom II X3 from 3800 to 7200khash, it just wasn't available/useful for windows until jgarzik's cpu-miner came along.

updated my CPU-table above.

amd64 debian linux 5.04.  Just running the vanilla bitcoind binary. All my stats were in full numbers so its about 15000 k/hashs per sec. 



Nice work! Cheers   will update my typos.

AMD Athlon 64 X2 Dual Core Processor 4400+
Windows x64
Bitcoin 0.3.19
2,090 khash/s

AMD Athlon XP 2000+
Ubuntu
Bitcoin 0.3.18
617 khash/s

Nvidia 8800GT Nvidia driver 260.99
poclbm -w 64
Windows x64
24,500 khash/s

I don't do CPU generating anymore, but those who do may be interested in my experience.

I got 5200 kHash/s from an intel i5 quad core using the standard client. But when I compiled my own client from svn (without tweaking any optimizations, or even stripping the binary) the rate went up to 6500 kHash/s. This is on Fedora 12 Linux.