Cleeve writes:
> You do realize that moore's law isn't really a law, right? ...
Of course. It's just a useful/interesting comparison of technological trends.
> ... It's more of a quip that the media has latched on to. Nobody has legislated a
> 200% performance increase in 2 years as far as I'm aware.
(NB: A 2X fps increase is a 100% performance increase, not 200%)
> Personally, I see a massive difference in performance comparing an 8800 GT to a 5770, especially at higher resolutions with AA enabled.
Must confess I'd been focusing more on NVIDIA cards in my research as I'd not been happy with ATI drivers in the past. However, the
5770 does look good, yes. How would you say a 5770 compares to a 4890 though? Still looks like 8800GT SLI will match it in many cases,
based on reviews I've read where the 5770 is often slower than a 4890.
This leads me to a different question which perhaps you can help with (see below).
> And I have to note that a couple 8800 GTs in SLI example adds a price premium for a larger PSU and the SLI feature on a motherboard,
> costs that you aren't factoring in.
True, but then such extra costs are not really that much these days given so many boards do support CF and/or SLI at good prices (especially
for older CPUs such as the Q6600, eg. Asus P5N 32-SLI Premium is about 35 UKP), and gfx cards now use so much power that a decent PSU
is a wise buy anyway.
> ... your 8800 GTs, that's certainly your prerogative and I'm happy you're pleased with your setup. They remain a powerful option and it's
> great that you're pleased with your purchase.. But that doesn't mean that other folks don't see the value you're missing in new products.
I entirely agree, I mentioned some caveats before. In my case it was partly budget, partly because of the games I want to play atm, etc. Either
way, like you say, I've obtained a good speedup for less than 50 UKP, reaching a level that will beat a 4890 or 5770 in many cases.
> ... Why are you assuming *your* prices are the only ones that matter?
They're the only ones that matter to
me.
I never said they were the only ones that mattered in some objective sense.
> Since we're commenting in an article's thread that is based on US pricing exclusively, I think US pricing is probably reasonable to consider in this context.
These products are available globally, and people comment & post from everywhere. It's perfectly reasonable to ask things from my own perspective based
on where I live.
Anyway, my new question. Am I right in thinking that a Radeon 4890 should stomp on an 8800GT? (single cards I mean, never mind 8800GT SLI) I thought this
would be the case, but my friend's system - an i7 930 with one (now two) 4890s - isn't seeing the kind of performance I would expect. See:
http://www.sgidepot.co.uk/misc/pctests.html
I know these are 3DMark06 results and so the overall scores are not that meaningful since they're skewed by CPU speed, but the fps scores for the
individual tests (Proxycon, Firefly, Canyon, Freeze) ought to be at least vaguely useful comparisons, yes?
I did ask my friend to check his results were done with 'performance' rather than 'quality' settings; they weren't, but he's redone the tests and the new data is
not much better. I'm sure something must be wrong with his setup, but not sure what to suggest. Any ideas? Meanwhile, I found this thread:
http://forums.techpowerup.com/showthread.php?t=93531
My friend's 4890 scores definitely don't look right, especially for 2x4890 CF, eg. compared to his i3/3850 results, the 4890s don't seem to be scaling properly
for Proxycon, Firefly and Deep Freeze. Anyone have any suggestions I can pass on?
Ian.