So, as requested, I decided to compare the beta’s of all the latest browsers using the Acid 3 test with somewhat surprising results…Below you will find screenshots of the results from IE8 Beta 1, Firefox 3 Beta 4, & Opera 9.5 Beta.
Internet Explorer 8 Test Result:
Firefox 3 Test Result:
Opera 9.5 Test Result:
As you can see – IE8 fails miserably! It initially only gets 10/100, but after a few seconds it increases to 17/100, which I find odd. Though admittedly IE8 is intended for developers to begin getting their pages compatible with IE8. Opera 9.5 also fails the test, though with a more respectable 60/100, which increased from somewhere around 47 after about a second or so.
Finally, Firefox 3, which scores 67/100 is the only browser I tested which doesn’t have the word “fail” on the end result, though I don’t think that counts as a pass because it didn’t score 100.
For what it’s worth, the end result should look like this reference rendering (as provided by acidtests.org).

doojsdad
March 15, 2008 at 01:31
I think it’s interesting how each browser score is the same no matter what OS it is installed on, unless I’m mistaken. Were all of yours on Vista?
Joeb
March 15, 2008 at 14:24
Yes all tests were on Vista
David
March 26, 2008 at 18:19
Today I tried with Safari 3.1: it gains a result of 75/100!
Joeb
March 26, 2008 at 23:06
Apparently later builds of Opera get 100%, later builds of Safari get 98% and Firefox 3.0b4 get 75%
Not able to test that claim though, as I don’t have these builds (Firefox the exception)
IAmEternaL
May 17, 2008 at 08:45
Opera 9.5b2 now gives 78/100.
temhawk
July 29, 2008 at 13:13
IE is such a faggit-ass browser. I wish it didn’t exist and I hate people who support it. Especially the developers, they are pretty reckless to dare to have a blog. When I read shit like “our mission” and “Trustworthy Computing” I can almost laugh. I’m not even sure if they realize in what kind of dreamworld they’re in!
Anthony
August 29, 2008 at 09:47
firefox 3.1 alpha 1 get 83%
Looking for a powerful Web Browser - Page 26 - CodeCall Programming Forum
December 29, 2008 at 06:58
[...] Looking for a powerful Web Browser Although i am an opera fan, see this :: Browser Comparison – Acid 3 Test « Joeb’s Blog…Thing Opera 10, with the new prestel or something build has a perfect 100/100 acid test result. You can [...]
anthon
January 6, 2009 at 01:01
i have ie, firefox, opera, and two versions of kmeleon (ccfme and oficial) in win nt 4 sp6 and i got this results:
ie 6 sp1=12/100 in 15 seg, 12 mb
firefox 3.05=71/100 in 13 seg, 40 mb
opera 9.63=85/100 in 11 seg, 41 mb
kmeleon ccfme 0.09=93/100 in 12 seg, 34 mb
kmeleon 1.5.1=50/100 in 13 seg, 42 mb