testing browser under harsh enviornment

ok, I am feeling frustration with my old dell laptop, 400mhz makes me like a turtle

the test:

browsing: http://sourceforge.net/projects/gnuwin32/files/ , a page >2MB

hardware: dell latitude CS, 400Mhz, 256MB, 5GB, xp - Windows Fundamental for Legacy PCs 

browser: Opera@USB 10.01, actually i place it on my desktop

Internet Explorer 6.0.2900.2180.xpsp_sp2_qfe.070227-2300

Mozilla Firefox 3.5.5

OffByOne V2.5.d

the only winner is opera, and the only explorer can let me read the page, fully readable, I can scroll it up and down, resize it to 50% 20%, etc

my surprise is even OB1(OffByOne) can't finish the job

and unfortunately Firefox can't finish the job and remain not responding

and lastly, IE6 is  doing as normal as it is.